Ophelia remains weak; TD 17 forms; dangerous Nesat headed for the Philippines

By: Dr. Jeff Masters , 4:54 PM GMT on September 24, 2011

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There's not much change to Tropical Storm Ophelia today, which continues to battle dry air and high wind shear. Satellite imagery shows that Ophelia has little heavy thunderstorm activity near its low level circulation center, which is mostly exposed to view. Most of the storm's heavy thunderstorms are to the east of the center, with just a few puffs of thunderstorms occasionally popping up near the center. An analysis from the University of Wisconsin CIMMS group shows a high 20 - 25 knots of wind shear due to strong upper-level southwesterly winds. Water vapor satellite images show Ophelia is at the eastern edge of large area of very dry air.


Figure 1. Afternoon satellite image of Ophelia showing the low-level center exposed to view, with all the storm's heavy thunderstorms in a band several hundred miles to the east and south. This is not a healthy-looking tropical storm.

Forecast for Ophelia
The latest SHIPS model forecast predicts that Ophelia will experience high wind shear of 20 - 40 knots over the next five days, and will move into a region with slightly drier air. This combination of shear and dry air may be enough to dissipate Ophelia, as predicted by several of the models. However, Ophelia has maintained itself better than the models have predicted, so the storm will probably survive until at least Sunday. Even it Ophelia does dissipate, it will have the chance to regenerate by Tuesday or Wednesday, when it may encounter a region of lower wind shear. At this time, it appears that Ophelia will only be a threat to Bermuda.

TD 17 forms
Tropical Depression 17 formed in the far eastern Atlantic off the coast of Africa last night, and is likely to intensify into Tropical Storm Philippe later today. TD 17 has some impressive low-level spiral bands and upper-level outflow, and is very close to tropical storm strength. The predicted west-northwest to northwest track of TD 17 will put it in a position where historically, very few storms have ever gone on to hit land.


Figure 2. MODIS satellite image of Hurricane Hilary at 4:05 pm EDT September 23, 2011. At the time, Hilary was a Category 4 storm with 145 mph winds. Image credit: NASA.

Powerful Hurricane Hilary remains at Category 4 strength
In the Eastern Pacific, Hurricane Hilary remains an impressive Category 4 hurricane with 140 mph winds. Hilary is headed west, away from Mexico, and the storm is small enough that its outer bands are not causing flooding problems for Mexico. A trough of low pressure expected to move over the Western U.S. by the middle of the week may be strong enough to turn Hilary to the north, eventually bringing Hilary to Mexico's Baja Peninsula. The timing of this event is highly uncertain, though. Hilary is small enough that it is unlikely to bring significant drought relief to Arizona, New Mexico, and Texas if the storm's remnants move north into those states. Hilary is the fourth Category 4 hurricane in the Eastern Pacific this year, and the second strongest, behind Hurricane Dora, which had 155 mph winds.

Invest 91L set to soak North Carolina
A moderate amount of heavy thunderstorm activity has developed over the Northwestern Bahamas in association with the tail end of an old stalled front. This disturbance, Invest 91L, is under a low 5 - 10 knots of wind shear, but water vapor loops show a considerable amount of dry air to the east and west of the disturbance that will likely interfere with development. In their 8 am Tropical Weather Outlook, NHC gave 91L a 20% chance of developing into a tropical depression by Monday. The disturbance has only a short window to develop, as it is headed northwards and is expected to make landfall in North Carolina by Sunday afternoon. The 8 am EDT SHIPS model forecast predicts 91L will hit 35 knots of wind shear by Sunday morning, when the storm will be approaching the coast of North Carolina. Heavy rains from 91L may cause localized flooding in Morehead City, NC and surrounding regions. A moist flow of tropical air over the region has already brought rainfall amounts of 1 - 3 inches to much of Eastern North Carolina today.

Dangerous Tropical Storm Nesat headed for the Philippines
What may be the season's most dangerous storm in the Western Pacific, Tropical Storm Nesat, has formed about 700 miles east of the Philippine Islands. Nesat is under a moderate 10 knots of wind shear, is embedded in a very moist environment, has very warm sea surface temperatures of 30°C under it, and a very favorable upper-level outflow pattern above it. Nesat has plenty of time to intensify into a major typhoon before its expected landfall on Luzon Island in the Philippines on Tuesday morning.

I'll have an update before 2 pm Sunday afternoon.

Jeff Masters

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TROPICAL STORM OPHELIA DISCUSSION NUMBER 17
NWS NATIONAL HURRICANE CENTER MIAMI FL AL162011
1100 PM AST SAT SEP 24 2011

IT IS UNCLEAR WHETHER OR NOT OPHELIA STILL HAS A WELL-DEFINED
CENTER...BUT IN THE INTEREST OF CONTINUITY ADVISORIES ARE STILL
BEING ISSUED.
WITHOUT ANY NEW DATA TO CONTRADICT EARLIER
ESTIMATES...THE INTENSITY IS BEING HELD AT 40 KT...AND THE INITIAL
MOTION WILL BE MAINTAINED AT 295/10 KT.

THE TRACK AND INTENSITY FORECASTS ARE MORE LINKED TONIGHT THAN
USUAL. OPHELIA WILL BE MOVING ALONG THE SOUTHERN EDGE OF
A LOW- TO MID-LEVEL AREA OF HIGH PRESSURE OVER THE NEXT FEW
DAYS...AND THE EXACT TRACK WILL DEPEND ON WHAT KIND OF INTENSITY
OPHELIA CAN MAINTAIN. THE GFS AND ECMWF...USUALLY THE MOST
RELIABLE GLOBAL MODELS...SHOW OPHELIA CONTINUING TO BE BATTERED BY
STRONG SOUTHWESTERLY OR WESTERLY SHEAR AND THEREFORE SHOW A WEAKER
VORTEX MOVING FARTHER WEST. ON THE OTHER HAND...MANY OF THE OTHER
MODELS INDICATE THAT OPHELIA WILL STRENGTHEN AND CONSEQUENTLY TURN
NORTHWARD STEERED BY DEEPER FLOW. BASED ON THE OVERALL SYNOPTIC
ENVIRONMENT AND THE MORE LIKELY SCENARIO THAT THE VERTICAL SHEAR
WILL NOT DECREASE SIGNIFICANTLY IN THE COMING DAYS...THE OFFICIAL
FORECAST KEEPS OPHELIA AS A LOW-END TROPICAL STORM AND LEANS IN THE
DIRECTION OF THE GFS AND ECMWF...WHICH IS ALSO JUST TO THE WEST OF
THE TRACK MODEL CONSENSUS.

THERE IS A POSSIBILITY THAT OPHELIA COULD DEGENERATE INTO A TROUGH
OF LOW PRESURE AT ANY TIME IF IT IS DETERMINED THAT IT NO LONGER
HAS A WELL-DEFINED CENTER. SHOULD THAT HAPPEN...NHC WOULD NO
LONGER ISSUE ADVISORIES UNLESS IT REGENERATES INTO A TROPICAL
CYCLONE.

FORECAST POSITIONS AND MAX WINDS

INIT 25/0300Z 18.3N 58.4W 40 KT 45 MPH
12H 25/1200Z 18.9N 59.8W 40 KT 45 MPH
24H 26/0000Z 19.8N 61.3W 35 KT 40 MPH
36H 26/1200Z 20.6N 62.6W 35 KT 40 MPH
48H 27/0000Z 21.3N 63.6W 35 KT 40 MPH
72H 28/0000Z 23.0N 65.0W 40 KT 45 MPH
96H 29/0000Z 24.5N 65.5W 45 KT 50 MPH
120H 30/0000Z 26.5N 66.0W 45 KT 50 MPH

$$
FORECASTER BERG
Member Since: July 6, 2010 Posts: 113 Comments: 32046
...OPHELIA STRUGGLING TO SURVIVE AS A TROPICAL CYCLONE...
Member Since: July 7, 2010 Posts: 0 Comments: 5682
Ophelia -

ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Quoting WeatherNerdPR:

000
WTPZ44 KNHC 250233
TCDEP4

HURRICANE HILARY DISCUSSION NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092011
800 PM PDT SAT SEP 24 2011

ALMOST EVERYTHING ABOUT HURRICANE HILARY HAS BEEN ALREADY SAID. THE
HURRICANE IS SMALL AND INTENSE AND BASED ON SATELLITE ESTIMATES
CONTINUES WITH 115 KNOTS. THERE IS NOTHING NEW TO REPORT AT THIS
TIME EXCEPT THAT THE LATEST AMSR IMAGE SHOWS TWO CONVECTIVE BANDS
SURROUNDING THE INNER CORE...AND THESE BANDS COULD BECOME AN OUTER
EYEWALL. IF SO...IT SHOULD RESULT IN SMALL FLUCTUATIONS IN
INTENSITY IN THE SHORT TERM. THIS HAS BEEN ANTICIPATED IN EVERY
PREVIOUS FORECAST. HOWEVER...THE OVERALL TREND IS FOR HILARY TO
BEGIN WEAKENING SLOWLY.

HILARY IS MOVING TOWARD THE WEST OR 270 DEGREES AT 8 KNOTS...STEERED
BY THE EASTERLIES ON THE SOUTH SIDE OF A SUBTROPICAL RIDGE. THIS
GENERAL MOTION SHOULD CONTINUE FOR AT LEAST 3 MORE DAYS.
THEREAFTER...A DEEP TROUGH OR A LOW IS FORECAST TO DIG TO THE
NORTHWEST OF HILARY...AND THIS NEW PATTERN SHOULD FORCE THE CYCLONE
TO TURN NORTHWARD. THE MOST MARKED DIFFERENCE BETWEEN TODAY AND
YESTERDAY AT THIS TIME IS THAT NOW ALL TRACK MODELS EVENTUALLY TURN
HILARY NORTHWARD. YESTERDAY...JUST A FEW MODELS DID SO. THIS
INCREASES THE CONFIDENCE THAT HILARY SHOULD TURN NORTHWARD...AND
THEREFOE IT IS INDICATED IN THE OFFICIAL FORECAST. THIS TURN AT THE
END OF THE FORECAST PERIOD SHOULD MAKE THE WEAKENING TREND MORE
MARKED SINCE THE CYCLONE WILL ENCOUNTER INCREASING SHEAR AND COOLER
WATERS FASTER THAN IF THE HURRICANE CONTINUES WESTWARD.


FORECAST POSITIONS AND MAX WINDS

INIT 25/0300Z 17.1N 107.7W 115 KT 135 MPH
12H 25/1200Z 17.2N 109.0W 115 KT 135 MPH
24H 26/0000Z 17.3N 110.6W 110 KT 125 MPH
36H 26/1200Z 17.5N 112.5W 110 KT 125 MPH
48H 27/0000Z 17.5N 114.0W 100 KT 115 MPH
72H 28/0000Z 18.0N 116.5W 80 KT 90 MPH
96H 29/0000Z 20.0N 116.5W 70 KT 80 MPH
120H 30/0000Z 23.0N 116.0W 60 KT 70 MPH

$$
FORECASTER AVILA



lol at the first sentence.
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Quoting TropicalAnalystwx13:


LOL.


.. I'll be here all week..

which comes as a source of annoyance to a great many people too.
Member Since: July 8, 2005 Posts: 259 Comments: 24021

000
WTPZ44 KNHC 250233
TCDEP4

HURRICANE HILARY DISCUSSION NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092011
800 PM PDT SAT SEP 24 2011

ALMOST EVERYTHING ABOUT HURRICANE HILARY HAS BEEN ALREADY SAID. THE
HURRICANE IS SMALL AND INTENSE AND BASED ON SATELLITE ESTIMATES
CONTINUES WITH 115 KNOTS. THERE IS NOTHING NEW TO REPORT AT THIS
TIME EXCEPT THAT THE LATEST AMSR IMAGE SHOWS TWO CONVECTIVE BANDS
SURROUNDING THE INNER CORE...AND THESE BANDS COULD BECOME AN OUTER
EYEWALL. IF SO...IT SHOULD RESULT IN SMALL FLUCTUATIONS IN
INTENSITY IN THE SHORT TERM. THIS HAS BEEN ANTICIPATED IN EVERY
PREVIOUS FORECAST. HOWEVER...THE OVERALL TREND IS FOR HILARY TO
BEGIN WEAKENING SLOWLY.

HILARY IS MOVING TOWARD THE WEST OR 270 DEGREES AT 8 KNOTS...STEERED
BY THE EASTERLIES ON THE SOUTH SIDE OF A SUBTROPICAL RIDGE. THIS
GENERAL MOTION SHOULD CONTINUE FOR AT LEAST 3 MORE DAYS.
THEREAFTER...A DEEP TROUGH OR A LOW IS FORECAST TO DIG TO THE
NORTHWEST OF HILARY...AND THIS NEW PATTERN SHOULD FORCE THE CYCLONE
TO TURN NORTHWARD. THE MOST MARKED DIFFERENCE BETWEEN TODAY AND
YESTERDAY AT THIS TIME IS THAT NOW ALL TRACK MODELS EVENTUALLY TURN
HILARY NORTHWARD. YESTERDAY...JUST A FEW MODELS DID SO. THIS
INCREASES THE CONFIDENCE THAT HILARY SHOULD TURN NORTHWARD...AND
THEREFOE IT IS INDICATED IN THE OFFICIAL FORECAST. THIS TURN AT THE
END OF THE FORECAST PERIOD SHOULD MAKE THE WEAKENING TREND MORE
MARKED SINCE THE CYCLONE WILL ENCOUNTER INCREASING SHEAR AND COOLER
WATERS FASTER THAN IF THE HURRICANE CONTINUES WESTWARD.


FORECAST POSITIONS AND MAX WINDS

INIT 25/0300Z 17.1N 107.7W 115 KT 135 MPH
12H 25/1200Z 17.2N 109.0W 115 KT 135 MPH
24H 26/0000Z 17.3N 110.6W 110 KT 125 MPH
36H 26/1200Z 17.5N 112.5W 110 KT 125 MPH
48H 27/0000Z 17.5N 114.0W 100 KT 115 MPH
72H 28/0000Z 18.0N 116.5W 80 KT 90 MPH
96H 29/0000Z 20.0N 116.5W 70 KT 80 MPH
120H 30/0000Z 23.0N 116.0W 60 KT 70 MPH

$$
FORECASTER AVILA

Member Since: July 7, 2010 Posts: 0 Comments: 5682
Quoting TropicalAnalystwx13:
Bored NHC?


BULLETIN
HURRICANE HILARY ADVISORY NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092011
800 PM PDT SAT SEP 24 2011

...NOTHING NEW ON HILARY...STILL MOVING WESTWARD WITH 135 MPH
WINDS...



SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...17.1N 107.7W
ABOUT 425 MI...685 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...135 MPH...215 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.05 INCHES


They must lurking on this blog too?
Member Since: Posts: Comments:
...NOTHING NEW ON HILARY...STILL MOVING WESTWARD WITH 135 MPH WINDS...
Member Since: July 7, 2010 Posts: 0 Comments: 5682
Bored NHC?


BULLETIN
HURRICANE HILARY ADVISORY NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL EP092011
800 PM PDT SAT SEP 24 2011

...NOTHING NEW ON HILARY...STILL MOVING WESTWARD WITH 135 MPH
WINDS...



SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...17.1N 107.7W
ABOUT 425 MI...685 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...135 MPH...215 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.05 INCHES
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Quoting TropicalAnalystwx13:
lol, I'm bored, so...

Plus this comment if you want me to leave Wunderground.

:P


No plus. Stick around.
Member Since: Posts: Comments:
Quoting CybrTeddy:


.. That would be taking a 'Jose'..


LOL.
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Quoting CybrTeddy:


.. That would be taking a 'Jose'..

lmao
Member Since: July 7, 2010 Posts: 0 Comments: 5682
Quoting WeatherNerdPR:

Well, it looks like crap. I think this thing is the meteorological definition of "crap".


.. That would be taking a 'Jose'..
Member Since: July 8, 2005 Posts: 259 Comments: 24021
Quoting BahaHurican:
Sorry we aren't all around here to keep u guys amused... some of us r going out, due to decrease in rain falling and increase in boredom at home....

And since Phillippe doesn't look like we'll have RI before 2 a.m. EDT, I think I'll go out for a while.... lol

l8r, all.......


l8r...?

Just messin' with you :P
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Sorry we aren't all around here to keep u guys amused... some of us r going out, due to decrease in rain falling and increase in boredom at home....

And since Phillippe doesn't look like we'll have RI before 2 a.m. EDT, I think I'll go out for a while.... lol

l8r, all.......
Member Since: October 25, 2005 Posts: 19 Comments: 22101
Tropical Storm Philippe:
Member Since: Posts: Comments:
Quoting JLPR2:
Hillary's eye is becoming too small.


PINHOLE EYE!!!

*Hyperventilating*
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Quoting JLPR2:
Hillary's eye is becoming too small.

Wilma of the EPAC.
Member Since: July 7, 2010 Posts: 0 Comments: 5682
695. JLPR2
Hillary's eye is becoming too small.
Member Since: September 4, 2007 Posts: 7 Comments: 8697
692 Lol
Member Since: Posts: Comments:
Quoting TropicalAnalystwx13:


ME!!!!!!!!

Lol Blog is slower than an obese turtle.
Member Since: July 7, 2010 Posts: 0 Comments: 5682
Quoting WeatherNerdPR:
........?
.............?!
.................!
Anybody here?!!


< Cloak Mode - Off

Lurking

< Cloak Mode - On
Member Since: Posts: Comments:
lol, I'm bored, so...

Plus this comment if you want me to leave Wunderground.

:P
Member Since: July 6, 2010 Posts: 113 Comments: 32046
690. JLPR2
Read the 5pm NHC discussion on Ophelia and I bet they are looking at the satellite images and going: WTF! too.
XD

The way the said it, they aren't 100% sure there is a LLC.

Maria all over again.
Member Since: September 4, 2007 Posts: 7 Comments: 8697
Quoting WeatherNerdPR:
........?
.............?!
.................!
Anybody here?!!


ME!!!!!!!!
Member Since: July 6, 2010 Posts: 113 Comments: 32046
........?
.............?!
.................!
Anybody here?!!
Member Since: July 7, 2010 Posts: 0 Comments: 5682
laze blog tonight
Member Since: May 21, 2006 Posts: 5091 Comments: 115104
Quoting CybrTeddy:


Irene was the least of your problems now. This coming from the guy who was hit by 6 hurricanes in 3 consecutive years.


Well...that sucks...lol.
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Quoting TropicalAnalystwx13:


lol.

I'm cursed XD


Irene was the least of your problems now. This coming from the guy who was hit by 6 hurricanes in 3 consecutive years.
Member Since: July 8, 2005 Posts: 259 Comments: 24021
Quoting JLPR2:


I got it yesterday. XD

I don't know what to make of this. Need a plane in there to see where the center is at.
I say a definite center relocation, since the NHC cant find one!
Member Since: Posts: Comments:
Quoting scott39:
Please dont wake my wife up!!

O_o
LOL
Member Since: July 7, 2010 Posts: 0 Comments: 5682
680. JLPR2
Quoting TropicalAnalystwx13:


Let meh help you out a little :)



That actually makes my suspicion that a new LLC may be in the works or that a MLC took over grow.
Member Since: September 4, 2007 Posts: 7 Comments: 8697
Quoting WeatherNerdPR:

Well, it looks like crap. I think this thing is the meteorological definition of "crap".


It's just junk!
Member Since: April 23, 2011 Posts: 104 Comments: 14873
Quoting WeatherNerdPR:

One more and you'll be able to summon the Beast.
Please dont wake my wife up!!
Member Since: Posts: Comments:
Quoting JLPR2:
If the center does reform to the SE, wind shear s nicer there.




Let meh help you out a little :)

Member Since: July 6, 2010 Posts: 113 Comments: 32046
674. JLPR2
If the center does reform to the SE, wind shear is nicer there.


Member Since: September 4, 2007 Posts: 7 Comments: 8697
Quoting MiamiHurricanes09:
666 again son. LMFAO.

i'm off my phone at a garbage party so pardon any spelling errors.

yeah, the party is so bad i'm on WU lol.


lol.

I'm cursed XD
Member Since: July 6, 2010 Posts: 113 Comments: 32046
Member Since: Posts: Comments:
TS.Ophelia's_12amGMT_ATCF : Starting 24Sept_12amGMT and ending 25Sept_12amGMT

The 4 eastern line-segments represent TropicalStormOphelia's path,
the westernmost line-segment is the straightline projection for 25Sept_12amGMT,
the sea-to-island blob at 18.587n64.356w-ngd is the endpoint of the 24Sept_6pmGMT
straightline projection connected to its nearest airport,
and the (top, middle) ocean*dot at 26.8n64.836w is the same for the 24Sept_12pmGMT.

Using straightline projection of the travel-speed&heading derived from the
ATCF coordinates spanning the 6hours between 6pmGMT then 12amGMT :
TS.Ophelia's travel-speed was 11.8mph(19k/h) on a heading of 292.8degrees(WNW)
TS.Ophelia was headed toward passage over RumCay,Bahamas ~3days23hours from now

Copy&paste 26.8n64.836w, 18.587n64.356w-ngd, 15.7n54.0w-16.5n54.7w, 16.5n54.7w-17.5n55.6w, 17.5n55.6w-17.7n57.0w, 17.7n57.0w-18.1n58.0w, rcy, 17.7n57.0w-23.709n74.803w into the GreatCircleMapper for more info

The previous mapping for 24Sept_6pmGMT

* Endpoint chosen because it's dueSouth of southernmost Bermuda
Member Since: Posts: Comments:
Quoting TropicalAnalystwx13:


DMAX.

Damn! I got #666 AGAIN! I'm getting scared now, lol.

One more and you'll be able to summon the Beast.
Member Since: July 7, 2010 Posts: 0 Comments: 5682
669. JLPR2
Quoting TropicalAnalystwx13:


DMAX.

Damn! I got #666 AGAIN! I'm getting scared now, lol.


I got it yesterday. XD

I don't know what to make of this. Need a plane in there to see where the center is at.
Member Since: September 4, 2007 Posts: 7 Comments: 8697
Quoting TropicalAnalystwx13:


DMAX.
666 again son. LMFAO.

i'm off my phone at a garbage party so pardon any spelling errors.

yeah, the party is so bad i'm on WU lol.
Member Since: Posts: Comments:
http://www.ssd.noaa.gov/goes/flt/t1/jsl-l.jpg
Member Since: Posts: Comments:
Quoting CybrTeddy:
Satellite presentation with Philippe has been improving the last few frames.


DMAX.

Damn! I got #666 AGAIN! I'm getting scared now, lol.
Member Since: July 6, 2010 Posts: 113 Comments: 32046
665. JLPR2
Quoting WeatherNerdPR:

Where is her center?


No idea, I'm not even sure if there is one. O.o
Member Since: September 4, 2007 Posts: 7 Comments: 8697
Quoting JLPR2:
If a circulation were under the convection I would be worried.

Where is her center?
Member Since: July 7, 2010 Posts: 0 Comments: 5682
Satellite presentation with Philippe has been improving the last few frames. A poleward outflow is being established. 40 at 11 IMO, but could be 45-60 tomorrow.
Member Since: July 8, 2005 Posts: 259 Comments: 24021

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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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