Dangerous Typhoon Wipha Drenching Japan

By: Dr. Jeff Masters , 3:45 PM GMT on October 15, 2013

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Large and powerful Category 1 Typhoon Wipha is bearing down on Japan as the storm races northeast at 28 mph. Wipha is likely to be the strongest typhoon to hit Japan since Typhoon Tokage of October 2004, according to the Japan Meteorological Agency. Wipha is merging with a cold front and undergoing the transition to an extratropical storm--the same process Hurricane Sandy underwent as it approached landfall in October 2012. While Typhoon Wipha is not as powerful as Sandy, it does have a huge area of winds in excess of 50 knots (57.5 mph), which extend out 130 miles to the left of the center. Since the center of Wipha is expected to graze the southern coast of Japan today, and the storm will only weaken slightly, a 100-mile-wide swath of Japan will see damaging winds of 50 knots, according to the Japan Meteorological Agency. About a 30 mile-wide swath of Japan will experience winds of 75 mph (hurricane force.) Tokyo will be right at the edge of the hurricane-force wind swath. With many trees still in leaf, these winds will cause widespread tree damage and downed power lines. The counter-clockwise flow of moist, tropical air around the center of Wipha is meeting up with the cold front currently over Japan. This is generating torrential rains over large portions of the country, as the moist air is forced upwards over the cold front, making the air expand and cool, condensing its copious moisture. Radar precipitation estimates show that rainfall rates of 1 - 2" per hour were occurring near Tokyo today. Heavy rains of 4 - 8" capable of causing damaging flooding will be widespread over Japan, including over the Fukushima nuclear site, where rainfall from Typhoon Man-Yi on September 16 complicated clean-up efforts of the reactors damaged by the March 2011 earthquake and tsunami.

Japan may not be all done with typhoons this month, as both the GFS and European models are predicting that an area of disturbed weather (Invest 93W) east of the Philippines will develop into a tropical storm late this week, which will then head northwest and threaten Japan by next Wednesday, October 23.


Figure 1. MODIS satellite image of Typhoon Wipha approaching Japan, taken at approximately 04:25 UTC on October 15, 2013. At the time, Wipha was a Category 1 storm with winds of 90 mph. Image credit: NASA.

Typhoon Nari hits Vietnam
Torrential rains are falling in Southeast Asia due to Typhoon Nari, which made landfall near Da Nang around 03 UTC on Wednesday as a Category 1 typhoon with 80 mph winds. The eye passed 10 miles south of Da Nang, putting the city in the stronger northern semicircle of the storm. Da Nang recorded top sustained winds of 55 mph, gusting to 81 mph, and picked up 4.06" of rain. Damage is heavy in Da Nang, and at least five deaths are being blamed on the storm. Nari battered the Philippines on Friday, killing thirteen people and leaving 2.1 million people without power on the main Philippine island of Luzon.

The Atlantic is quiet
The tropical wave (Invest 98L) a few hundred miles east of the Lesser Antilles Islands that we've been tracking this week has been torn apart by high winds, and is no longer a threat to develop. There are no threat areas in the Atlantic to discuss today, and none of the reliable computer models for forecasting tropical cyclone genesis is predicting development over the next five days.


Figure 2. MODIS satellite image of Tropical Storm Octave (top) and Tropical Storm Priscilla (bottom) taken at approximately 18:30 UTC (2:30 pm EDT) on October 14, 2013. At the time, Octave had top winds of 50 mph, and Priscilla had top winds of 45 mph. Image credit: NASA.

Tropical Depression Octave in the Eastern Pacific bringing needed rain to Texas
In the Eastern Pacific, we have two tropical cyclones: Tropical Storm Priscilla, a minimal-strength tropical storm that is weakening and heading northwest out to sea, and Tropical Depression Octave, which hit Mexico's Baja Peninsula early Wednesday morning. Octave and Priscilla are embedded in a large plume of tropical moisture that is riding up to the northeast over Mexico and Texas. Flood watches and warnings are posted over much of the southern half of Texas, where widespread rains of 2 - 6" have fallen over the past two days. While the heavy rains have caused some minor to moderate flooding, the precipitation is mostly welcome, as it will make a substantial dent in the multi-year drought that has gripped much of Texas.


Video 1. Waterspout observed offshore of Cabo San Lucas, Mexico on October 14, 2013, as rains bands from Tropical Storm Octave moved over the Baja Peninsula.

Jeff Masters

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GFS fantastyland. A monster winter storm for the great lakes.

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6-10 day


8-14 day
Member Since: February 28, 2013 Posts: 4 Comments: 2323
Well it actually is more humid over Orlando to the coast as compared to the rest of the state.

Member Since: February 28, 2013 Posts: 4 Comments: 2323
Quoting 529. LargoFl:
Yes the lower humidity is most welcomed huh..ah dunedin..I used to grow tomatoes also..this weather is great for them..but your right..without the afternoon rains watering is a must for sure..years ago i tried some corn..didnt do too well so i never tried it again.



Even tomato "experts" here say that growing anything except cherry varieties here is tough. When a seed packet says that plant wants "full sun", I think they mean Ohio and not here. LOL.

I moved my garden from very sunny to an area shaded by a giant oak, and have been doing much better. I had yellow pear tomatoes (small cherry-like variety) by the bushel ... the plant was 7 feet tall! Trying a couple new types this fall. Growing a lot of peppers too.
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Quoting 535. Nekeopbarren:

Stacy - Please stay on topic. Perhaps you missed the banter last night. Lots of trespassing. Lots of it. Let's not go there today, K?


GW is always on topic on Doc's blog.
Member Since: February 28, 2013 Posts: 4 Comments: 2323
Beginnings of an El-Nino building in? Notice all the warm water across the western Pacific starting to shift further east.


Member Since: February 28, 2013 Posts: 4 Comments: 2323
The next 3 weeks look wet across FL thanks to the MJO.


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Quoting 529. LargoFl:
Yes the lower humidity is most welcomed huh..ah dunedin..I used to grow tomatoes also..this weather is great for them..but your right..without the afternoon rains watering is a must for sure..years ago i tried some corn..didnt do too well so i never tried it again.


Lots of rain on the way just wait a few more days. Also the high humidity is back over by E C FL. Sticky outside today!

GFS 192hr precip accum
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Member Since: August 6, 2011 Posts: 4 Comments: 36912
Yes the lower humidity is most welcomed huh..ah dunedin..I used to grow tomatoes also..this weather is great for them..but your right..without the afternoon rains watering is a must for sure..years ago i tried some corn..didnt do too well so i never tried it again.
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Cold in Dutchess county NY this morning! 42 degrees! High don't look to be getting out of the 50 next week! Winter is coming. Fast!
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Quoting 520. Sfloridacat5:


No real cool down but not too long ago we were looking at low 90s for highs with mid 70s for lows.

The biggest thing is less humidity and no afternoon T storms anymore.


??? 73 with a dewpoint of 73 here in Orlando this morning. Maybe it's cooler in South FL than further north.
Member Since: February 28, 2013 Posts: 4 Comments: 2323
Member Since: August 6, 2011 Posts: 4 Comments: 36912
Good morning from Orlando while the Midwest braces itself for record cold temperatures. In Orlando it's 73 and foggy right now. Highs in the low 90's today thru most of next week with thunderstorm chances rising this weekend thru next week. Good Morning!
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Quoting 522. hurricanes2018:
Colder Temperatures Ahead for Midwest, Great Lakes
October 16, 2013
A colder weather pattern is set to take shape for the second half of October. Some locations could see their first snowflakes


Many areas may not even get out of the 30's for highs. Winter is coming to the Mid West in 4 to 5 days from now.
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MUCH cooler weather for the northeast starting on sunday only 62F IN new haven,conn and highs in the 50s next week!
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Colder Temperatures Ahead for Midwest, Great Lakes
October 16, 2013
A colder weather pattern is set to take shape for the second half of October. Some locations could see their first snowflakes
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I'm afraid they are going to have to make this graph go up to 500PPM sooner or later.

Member Since: July 10, 2013 Posts: 0 Comments: 900
Quoting 515. LargoFl:
Looks like no cool down for Tampa Bay area huh.........


No real cool down but not too long ago we were looking at low 90s for highs with mid 70s for lows.

The biggest thing is less humidity and no afternoon T storms anymore.
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99 where are you?
Member Since: September 11, 2010 Posts: 1 Comments: 4335
Good Morning,

I live just north of Largo (Dunedin). The great thing about our weather being right where it is at the moment is that my tomato plants are growing like crazy. Come home from work and they are visibly larger than when I left the house.

As long as the temp drop just below 70 at night ... perfect!

It has been dry, so watering is a must.
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G'morning. One of these cool fronts will make it there eventually Largo.
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Good morning, afternoon and evening, everyone. It's 71 degrees with a heat index of 76 with a high expected of 77. We have a 40 or 70 percent chance of rain, depending on who you listen to.

Breakfast's on the sideboard: Andouille sausage and shrimp scramble, cheesy grits and shrimp, whole wheat English muffins with poached egg whites, low fat cheese, ham, tomato and sauce, whole wheat pancakes with fruit sauce, egg burritos with cheese and chorizo, scrambled eggs with ricotta and brocolini, Warm grapefruit and orange with toasted coconut, cranberry coffee cake, thick slices fried ham, cheese Danishes, yogurt, fresh fruit and orange, apple or pineapple juice. Enjoy!
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Looks like no cool down for Tampa Bay area huh.........
Member Since: August 6, 2011 Posts: 4 Comments: 36912
Good Morning folks!..Blogs Coffee is Perked!.......
Member Since: August 6, 2011 Posts: 4 Comments: 36912
TROPICAL DEPRESSION PRISCILLA DISCUSSION NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP162013
200 AM PDT WED OCT 16 2013

CONVECTION CONTINUES TO PULSE NEAR AND TO THE WEST OF THE CENTER.
HOWEVER...THE OVERALL CONVECTIVE PATTERN HAS CHANGED LITTLE OVER
THE PAST 12H...SO THE INITIAL INTENSITY REMAINS UNCHANGED AT 30
KT...WHICH IS AN AVERAGE OF SATELLITE INTENSITY ESTIMATES OF 35 KT
FROM UW-CIMSS ADT...30 KT FROM TAFB...AND 25 KT FROM SAB.

PASSIVE MICROWAVE FIXES INDICATE THAT PRISCILLA IS STILL MOVING AT
290/06 KT. THE CYCLONE IS EXPECTED TO MOVE WEST-NORTHWESTWARD FOR
THE NEXT 24H OR SO DUE TO A DEEP-LAYER RIDGE SITUATED TO THE NORTH
AND EAST OF PRISCILLA. AS THE CYCLONE GRADUALLY WEAKENS AND BECOMES
A VERTICALLY SHALLOW REMNANT LOW...A TURN TOWARD THE WEST IS
FORECAST BY 36H...FOLLOWED BY A WEST-SOUTHWESTWARD MOTION AT 48H
AND BEYOND AS THE WEAKENED SYSTEM GETS STEERED BY THE LOW-LEVEL
NORTHEASTERLY TRADE WIND FLOW. THE NHC TRACK FORECAST IS SIMILAR TO
THE PREVIOUS ADVISORY AND THE MULTI-MODEL CONSENSUS TVCE.

THE SHEAR IS FORECAST TO REMAIN LOW FOR THE NEXT 12-18H WHILE
PRISCILLA REMAINS OVER MARGINALLY WARM SSTS. HOWEVER...BY 24H AND
BEYOND...THE CYCLONE WILL BE MOVING INTO A REGION OF MODERATE
SOUTHWESTERLY WIND SHEAR AND DRIER MID-LEVEL AIR...WHILE ALSO
MOVING OVER SUB-26C SSTS. THIS COMBINATION OF UNFAVORABLE
CONDITIONS SHOULD CAUSE PRISCILLA TO WEAKEN AND DEGENERATE INTO A
REMNANT LOW BY 36H AND DISSIPATE AFTER 72H...IF NOT SOONER.

FORECAST POSITIONS AND MAX WINDS

INIT 16/0900Z 17.9N 118.6W 30 KT 35 MPH
12H 16/1800Z 18.3N 119.7W 30 KT 35 MPH
24H 17/0600Z 18.6N 120.9W 25 KT 30 MPH
36H 17/1800Z 18.7N 122.0W 20 KT 25 MPH...POST-TROP/REMNT LOW
48H 18/0600Z 18.5N 123.1W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 19/0600Z 17.7N 125.3W 15 KT 15 MPH...POST-TROP/REMNT LOW
96H 20/0600Z...DISSIPATED

$$
FORECASTER STEWART
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BULLETIN
TROPICAL DEPRESSION PRISCILLA ADVISORY NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP162013
200 AM PDT WED OCT 16 2013

...PRISCILLA CONTINUES SLOWLY TOWARD THE WEST-NORTHWEST...


SUMMARY OF 200 AM PDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...17.9N 118.6W
ABOUT 660 MI...1065 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES
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Quoting 508. mitthbevnuruodo:


Oh my gosh...why are you mainly a lurker?! LOL Love bloggers who can post stuff like you

Thanks. That response is based on my deep knowledge of physics and electrical engineering, in particular electromagnetic wave propagation (from courses in both physics and EE) and some practical knowledge of radar (from courses and professional work in EE). None of it comes from a knowledge of meteorology, about which I actually know very little. (Oddly, I have a pretty solid background in all of the physical sciences except meteorology, which is why I'm here... to learn. That bit about the radar picking up the road came from someone on this blog a year or two ago, for example.)

So mostly I lurk because: 1) I try to stay on topic, and the topics under discussion are mostly things I know little about; 2) I'm a very slow thinker and writer, so even when there is a topic I can contribute to, someone else almost always responds before I even know that I might have something relevant to say.
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Report: U.S. to be top energy producer this year - USA Today, October 11, 2013

If we endanger the lives of billions with what largely amounts to a slow, poison gas, can their protector be far behind?

Is it easier to forecast the behavior of men, than the plagues he now beckons?



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Quoting 491. EstherD:

OK. This is a very old post, and the OP has probably already gone to bed. Furthermore, the original image in this post appears to be a hotlink to the radar (rather than a static image), so I cannot be sure what I'm seeing now is what the OP saw several hours earlier. But I'll take a chance.

Clutter in a radar image has less to do with radio frequency interference (RFI) than with bogus reflections. Or to say it a better way, real (but undesired) reflections of objects that are not the intended target(s).

I'm going to assume you're referring to the linear yellow feature about 1/3 up the right-hand side of the image, which runs parallel to the red line representing I70, and just below the white cross, which represents the location of the radar.

Certain conditions make the atmosphere act like a lens, causing it to refract (bend) the outgoing radar beam down to the ground, and also to refract the returning echoes so that the radar sees them as if they were reflections of real targets in its straight line-of-sight. This phenomenon is what the term "clutter" is most-often used to describe.

Therefore, the most likely explanation is that this linear feature is a reflection from the cars and trucks on I70, or from the road surface itself.

The road is so close to the radar, that the beam won't be very high off the ground as it crosses the road, so it wouldn't take much refraction to cause it to hit the ground there. The fact that the radar is picking up the windmills is additional evidence that the beam is being refracted and picking up objects on the ground.

This is a common occurrence. So common in fact that I'm surprised some of the pro meteorologists didn't pick up on it earlier.

There are other well-known examples. One is near Chicago, I believe, but I don't want to take the time now to look it up, else this post will be another half hour later than it already is.


Oh my gosh...why are you mainly a lurker?! LOL Love bloggers who can post stuff like you
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Mora and Craig Smith with UH - noa's School of Ocean and Earth Science and Technology (SOEST) worked with a 28-person international collaboration of climate modelers, biogeochemists, oceanographers, and social scientists to develop the study, which is due for publication October 15 in the scientific journal PLOS Biology.


Link for #506

http://www.sciencedaily.com/releases/2013/10/1310 15191401.htm

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World Ocean Systems Undermined by Climate Change by 2100

Oct. 15, 2013 — An ambitious new study describes the full chain of events by which ocean biogeochemical changes triggered by humanmade greenhouse gas emissions may cascade through marine habitats and organisms, penetrating to the deep ocean and eventually influencing humans.

Previous analyses have focused mainly on ocean warming and acidification, considerably underestimating the biological and social consequences of climate change. Factoring in predictable synergistic changes such as the depletion of dissolved oxygen in seawater and a decline in productivity of ocean ecosystems, the new study shows that no corner of the world ocean will be untouched by climate change by 2100.

"When you look at the world ocean, there are few places that will be free of changes; most will suffer the simultaneous effects of warming, acidification, and reductions in oxygen and productivity," said lead author Camilo Mora, assistant professor at the Department of Geography in the College of Social Sciences at the University of Hawai'i at Mānoa (UH Mānoa). "The consequences of these co-occurring changes are massive -- everything from species survival, to abundance, to range size, to body size, to species richness, to ecosystem functioning are affected by changes in ocean biogeochemistry."
...
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505. HadesGodWyvern (Mod)
Japan Meteorological Agency
Tropical Cyclone Advisory #5
Gale Warning
TROPICAL DEPRESSION 31
15:00 PM JST October 16 2013
=====================================

Near Marianas Island

At 6:00 AM UTC, Tropical Depression (1002 hPa) located at 12.7N 144.4E has 10 minute sustained winds of 30 knots. The depression is reported as moving west at 12 knots.

Dvorak Intensity: T2.0

Forecast and Intensity
========================
24 HRS: 13.8N 143.3E - 35 knots (CAT 1/Tropical Storm) Marianas Island
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504. HadesGodWyvern (Mod)
Japan Meteorological Agency
Tropical Cyclone Advisory #63
DEVELOPING LOW, FORMER TC WIPHA (T1326)
15:00 PM JST October 16 2013
======================================

Sea East Of Japan

At 6:00 AM UTC, Extratropical Low, Former Wipha (968 hPa) located at 41.0N 146.0E has 10 minute sustained winds of 65. The low is reported as moving north northeast at 50 knots.

Gale Force Winds
================
600 NM from the center

This is the final tropical cyclone advisory from the Japan Meteorological Agency..
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503. HadesGodWyvern (Mod)
Quoting 501. EstherD:

Thanks.

Tried posting an image on my own blog w/o specifying a size. Looks OK. Blog code appears to auto-scale image, but I'm not familiar enough with HTML to figure out exactly how it's being done.

Been looking at the raw HTML for comments on this blog. Looks like most images are posted w/o explicit scaling here, too, and they look OK. So it seems that specifying an image size might help, but isn't (usually) required.

Only way to know for sure is to try it. Preview still looks really HUGE and wrong. But what could possibly go wrong?! Can always delete the dang thing later, right? (I hope!) Here goes...



you're welcome
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YAAAH! Worked!

OK. Done playing now. Back to the regularly scheduled programming w/o further interruptions. ;)
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Quoting 499. HadesGodWyvern:
add width=400 height=400 after the image address

Thanks.

Tried posting an image on my own blog w/o specifying a size. Looks OK. Blog code appears to auto-scale image, but I'm not familiar enough with HTML to figure out exactly how it's being done.

Been looking at the raw HTML for comments on this blog. Looks like most images are posted w/o explicit scaling here, too, and they look OK. So it seems that specifying an image size might help, but isn't (usually) required.

Only way to know for sure is to try it. Preview still looks really HUGE and wrong. But what could possibly go wrong?! Can always delete the dang thing later, right? (I hope!) Here goes...

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EP, 16, 2013101606, , BEST, 0, 178N, 1183W, 30, 1006, TD, 34, NEQ, 0, 0, 0, 0, 1011, 180, 30, 0, 0, E, 0, , 0, 0, PRISCILLA, M,
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499. HadesGodWyvern (Mod)
add width=400 height=400 after the image address
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Never tried to post an image on this blog before today. When I previewed my post, the images were HUGE, extending far beyond the right column edge. Was worried that I might "blow up the blog", as I've seen happen a few times in the past. So I trashed the images and posted links instead. But I'd really like to be able to post images sometime.

So do I have to pre-scale 'em before posting? Or is the preview not fully WYSIWYG? In other words, if I had posted the images as is, would they have been auto-scaled when they were loaded onto the main blog?

Inquiring minds want to know. TIA...
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497. HadesGodWyvern (Mod)
Japan Meteorological Agency
Tropical Cyclone Advisory #62B
Typhoon Warning
TYPHOON WIPHA (T1326)
14:00 PM JST October 16 2013
======================================

SUBJECT: Category Three Typhoon Near Miyagi Prefecture

At 5:00 AM UTC, Typhoon Wipha (960 hPa) located at 39.8N 145.8E has 10 minute sustained winds of 65 knots with gusts of 95 knots. The cyclone is reported as moving northeast at 45 knots.

Storm Force Winds
=================
240 NM from the center in east quadrant
150 NM from the center in west quadrant

Gale Force Winds
================
500 NM from the center in east quadrant
325 NM from the center in west quadrant

Dvorak intensity: T4.0

Forecast and Intensity
=======================
NEXT HOUR: 40.4N 146.4E - 65 knots (CAT 3/Strong Typhoon) Hokkaido Prefecture
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Quoting 487. TropicalAnalystwx13:
There have been quite a few weather-related deaths lately...here's how it breaks down according to the latest media reports:

- 36 dead as a result of Cyclone Phailin, all of which in the storm's landfall state on the eastern coast of India

- Death toll as a result of Typhoon Nari at 38: 33 in the Philippines, 5 in Vietnam

- New information is that Typhoon Wipha has killed 13 in Japan

- The death toll as reported by the Associated Press is up to 110 in relation to the Philippine earthquake


Phailin could have killed thousands though... so that was amazingly low for such a monstrous storm
Member Since: October 6, 2013 Posts: 0 Comments: 721
Quoting 453. TropicalAnalystwx13:
All drought on the East Coast should be erased in the next update. Texas should have a dent as well.

Steadily improving.



California needs some rain.... it rained 5 inches last year in my town.... The average is 16-18 inches
Member Since: October 6, 2013 Posts: 0 Comments: 721
Quoting 262. LargoFl:
winter can be very hard on the northeast..this one I surely remember..almost lost a finger to frostbite shoveling snow

Another old post, but worth a rebuttal.

I've been here in Cambridge, MA, more-or-less continuously since fall 1965. Yes, there were a lot of big snowfalls in the 60's and 70's, especially 1978. But there have also been lots of them since. Perhaps you just missed 'em. Here are two recent ones to get you started. From the same site you got your image of 1961. Just needed to be a bit more persistent, and look a little further down the list.

Feb 2013

Mar 2013
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TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 AM EDT WED OCT 16 2013

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

A LARGE AREA OF DISTURBED WEATHER THAT EXTENDS FROM THE SOUTHEASTERN
BAHAMAS NORTHEASTWARD FOR SEVERAL HUNDRED MILES OVER THE WESTERN
ATLANTIC OCEAN IS ASSOCIATED WITH AN UPPER-LEVEL TROUGH. AN AREA OF
LOW PRESSURE IS EXPECTED TO FORM SOUTHEAST OF BERMUDA DURING THE
NEXT DAY OR SO...AND MOVE NORTHWARD AND THEN NORTHEASTWARD NEAR OR
ALONG A FRONTAL BOUNDARY OVER THE WEST-CENTRAL ATLANTIC.
ENVIRONMENTAL CONDITIONS ARE EXPECTED TO BE ONLY MARGINALLY
FAVORABLE FOR TROPICAL CYCLONE FORMATION. THIS SYSTEM HAS A LOW
CHANCE...10 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE
NEXT 48 HOURS...AND A LOW CHANCE...10 PERCENT...OF BECOMING A
TROPICAL CYCLONE DURING THE NEXT 5 DAYS.
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492. HadesGodWyvern (Mod)
Japan Meteorological Agency
Tropical Cyclone Advisory #62A
Typhoon Warning
TYPHOON WIPHA (T1326)
13:00 PM JST October 16 2013
======================================

Near Miyagi Prefecture

At 4:00 AM UTC, Typhoon Wipha (960 hPa) located at 38.9N 144.8E has 10 minute sustained winds of 65 knots with gusts of 95 knots. The cyclone is reported as moving northeast at 44 knots.

Storm Force Winds
=================
240 NM from the center in east quadrant
150 NM from the center in west quadrant

Gale Force Winds
================
500 NM from the center in east quadrant
325 NM from the center in west quadrant

Dvorak intensity: T4.0

Forecast and Intensity
=======================
NEXT HOUR: 39.5N 145.4E - 65 knots (CAT 3/Strong Typhoon) Miyagi Prefecture
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Quoting 361. MrMixon:
Check out the Denver radar... I guess the radar anomaly is related to the linear band of showers moving right towards it. Or are the showers artifacts related to the radar anomaly? Or is it all HAARP?

OK. This is a very old post, and the OP has probably already gone to bed. Furthermore, the original image in this post appears to be a hotlink to the radar (rather than a static image), so I cannot be sure what I'm seeing now is what the OP saw several hours earlier. But I'll take a chance.
Quoting 409. sar2401:

It's an electronic artifact called clutter. There is always some interference with radio signals. On an actual radio, like an AM band radio, you hear lots of buzzes and static from atmospheric events. At microwave frequencies that are displayed rather than converted to aural signals, you see all that green stuff when there's no actual storm activity. On the WU radar, at least for single site radar, not regional, you have the option to turn off clutter. The NWS radar doesn't give you that option, and small storms can actually be obscured by all the clutter. Everything from DC to daylight is a radio signal, and all are subject to interference or clutter, some frequencies just more so than others.

Clutter in a radar image has less to do with radio frequency interference (RFI) than with bogus reflections. Or to say it a better way, real (but undesired) reflections of objects that are not the intended target(s).
Quoting 419. MrMixon:


I'm not so sure everything I'm seeing is clutter. Here it is again with clutter removed. The obvious, sharp-edged artifact is gone, but soft-edged linear features remain. We've been getting light snow all day just north of that line, so I wouldn't be surprised if it is a band of showers. Of course, if so, it's suspiciously linear.

NOTE - the small glob of 28 activity in the center is due to windmills at the National Renewable Energy Laboratory.

I'm going to assume you're referring to the linear yellow feature about 1/3 up the right-hand side of the image, which runs parallel to the red line representing I70, and just below the white cross, which represents the location of the radar.

Certain conditions make the atmosphere act like a lens, causing it to refract (bend) the outgoing radar beam down to the ground, and also to refract the returning echoes so that the radar sees them as if they were reflections of real targets in its straight line-of-sight. This phenomenon is what the term "clutter" is most-often used to describe.

Therefore, the most likely explanation is that this linear feature is a reflection from the cars and trucks on I70, or from the road surface itself.

The road is so close to the radar, that the beam won't be very high off the ground as it crosses the road, so it wouldn't take much refraction to cause it to hit the ground there. The fact that the radar is picking up the windmills is additional evidence that the beam is being refracted and picking up objects on the ground.

This is a common occurrence. So common in fact that I'm surprised some of the pro meteorologists didn't pick up on it earlier.

There are other well-known examples. One is near Chicago, I believe, but I don't want to take the time now to look it up, else this post will be another half hour later than it already is.
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Children learn at an early age that "No!" is a powerful word. Their parents tell them that, and they feel deflated. When they figure out that they too can say "No!", they reach an important milestone in their emotional development. Unfortunately, some people never outgrow this fundamental denialism. They continue to say "No!" in order to feel powerful the rest of their lives.
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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