Hurricane Barbara Hits Mexico; Severe Weather Outbreak Continues in Midwest

By: Dr. Jeff Masters , 3:29 PM GMT on May 30, 2013

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The Eastern Pacific's Hurricane Barbara is still alive as a tropical depression at the edge of the Atlantic's Gulf of Mexico, and has the potential to gain new life as an Atlantic tropical cyclone later today. Barbara made landfall near 4 pm EDT (1 pm PDT) May 29, 2013, on Mexico's Bay of Tehuantepec coast, as a Category 1 hurricane with 75 mph winds. The storm killed two people, and brought heavy rains of 16.02" (407mm) to Arriaga in the state of Chiapas in an 18-hour period. Barbara remains a serious rainfall threat today. The storm intensified remarkably rapidly, becoming a hurricane just 21 hours after it became a tropical depression. According to NOAA's Historical Hurricane Tracks website, only one other Eastern Pacific hurricane has ever made landfall in May--Category 1 Hurricane Agatha of 1971, which hit Mexico west of Acapulco. Barbara is just the 2nd hurricane ever to make landfall in the Bay of Tehuantepec (the other: Category 1 Hurricane Rick of 1997.) Barbara's formation date of May 28 was the 2nd earliest appearance of the Eastern Pacific's 2nd named storm of the year; the record earliest second storm of the year occurred just last year, on May 21, 2012 (Tropical Storm Bud.) The average date for the formation of the Eastern Pacific's 2nd storm is June 25. Barbara's landfall location was the most easterly on record for an East Pacific hurricane. Records of Eastern Pacific hurricanes go back to 1949, but aren't really reliable until 1966.


Figure 1. MODIS satellite image of Hurricane Barbara taken at 4:30 pm EDT on May 29, 2013. At the time, Barbara was making landfall as a Category 1 hurricane with 75 mph winds. Image credit: NASA.

Barbara survived its overnight crossing of Mexico's Isthmus of Tehuantepec with its circulation intact, but lost nearly all of its heavy thunderstorm activity. This morning, the center of Barbara was located just inland from the southernmost waters of the Gulf of Mexico's Bay of Campeche. Barbara was drifting northwest, towards open water, at 3 mph. With wind shear a moderate 10 - 20 knots over Barbara, the storm has the potential to be classified as an Atlantic tropical depression later today if its center emerges over water. However, latest satellite loops have shown a steady reduction in the storm's heavy thunderstorms this morning, and Barbara may lose its circulation before it has time take advantage of the Gulf of Mexico's warm waters. Since Barbara is a small storm, the moderate wind shear may be too great for it to withstand. None of the reliable computer models predict that Barbara will survive into Friday. If Barbara is able to re-intensify to a tropical storm, it would keep the name Barbara, becoming the first Atlantic storm ever to have an Eastern Pacific name. Formerly, Eastern Pacific storms crossing into the Atlantic would be given a new name, but a recent NHC policy change allows storms to keep their names when they cross from one ocean basin to another. If Barbara were to dissipate before reaching the Gulf, then its remnants regenerate into a tropical storm in the Gulf, it would be named Andrea. If you want to discuss this year's hurricane season via Twitter, AP will be doing a hurricane twitter chat today (Thursday) at 1 p.m. EDT: #APStormChat; the National Hurricane Center is doing a hurricane chat at 2 pm EDT: #HurriChat.

Double ocean tropical cyclones: a rare breed
According to the Hurricane FAQ, since 1923 there have been four East Pacific tropical storms or hurricanes that have maintained their circulations while crossing into the Atlantic Ocean, becoming tropical storms in the Atlantic Ocean:

Northeast Pacific Tropical Storm Alma (May 2008) became a remnant low in the Atlantic, where it merged with another tropical wave which generated Atlantic Tropical Storm Arthur. Arthur hit Belize as a tropical storm, killing nine and doing $78 million in damage.

Northeast Pacific Hurricane Cosme became Atlantic Tropical Storm Allison in June 1989. Allison hit Texas as a tropical storm, and heavy rains from Allison--up to 30" in some regions of Texas and Louisiana--triggered floods that killed eleven people and did $1 billion in damage. (A later incarnation of Tropical Storm Allison in 2001 also hit Texas, and caused such extensive flooding that its name was retired.)

An unnamed Northeast Pacific Tropical Storm (September-October 1949) became Atlantic Hurricane (Storm #10) and hit Freeport, Texas as a Category 4 hurricane, killing two people.

An unnamed Northeast Pacific Tropical Storm (October 1923) became Atlantic Hurricane (Storm #6) and made landfall as a Category 1 hurricane in Louisiana.

There have been eight Atlantic tropical storms or hurricanes that have maintained their circulations while crossing into the East Pacific Ocean, and were then tropical storms in that ocean.


Figure 2. Severe weather outlook for Thursday, May 30, calls for a "Slight Risk" of severe weather over much of the Midwest. You can follow today's severe weather outbreak from our Severe Weather page.

Multi-day severe weather outbreak in the Midwest brings more tornadoes and flooding
It was an active day for tornadoes in the Midwest on Wednesday, with NOAA's Storm Prediction Center (SPC) logging 23 preliminary tornado reports. Twisters touched down in Nebraska, Kansas, Texas, Oklahoma, Iowa, and Wisconsin. The tornadoes missed heavily populated areas, and no injuries and only minor damage was reported. The latest forecast from NOAA's Storm Prediction Center call for a "Moderate Risk" of severe weather today (Thursday) over much of Oklahoma, with the potential for several strong EF-2 and EF-3 tornadoes.


Figure 3. Five-day rainfall forecast for the period ending at 7am EDT Tuesday, June 4, calls for very heavy rains of 3 - 5" over much of Missouri. Image credit: NOAA/HPC.

As discussed by wunderground's weather historian Christopher C. Burt in his latest post, Some Phenomenal Rainfalls the Past Week in the U.S., the country has seen a lot of very heavy rainfall over the past week that has caused serious flooding. Of particular concern is Iowa, where Governor Terry Branstad issued a disaster proclamation on Tuesday for 13 Iowa counties, due to recent storms and flooding.The Iowa State Climatologist, Harry Hillaker, announced on May 29th that this has been the wettest spring (March-May) on record for the state since records began 141 years ago. A state average of 16.4” has been preliminarily reported. The previous wettest spring was 15.5” way back in 1892. He warned that “Iowa is at a tipping point for a major flood event”. Rains of 1 - 2" are expected over Eastern Iowa the remainder of the this week, which will keep most rivers above flood stage. Another round of rains of 1 - 2" are likely on Tuesday and Wednesday of next week, when the next storm system rolls through. That system also has the potential to bring a severe weather outbreak to the Midwest.

Jeff Masters

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Interestingly enough, some of the people I find to be the most knowledgeable and accurate on here, outside of mets, tend to be in high school. Let's not cause drama today. This is a tropical weather blog, not a middle school classroom.
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Quoting Minnemike:
agitate much? this was a little more than needed, and probably not going to help the person struggling with things. the choice is yours..
edit: in fairness, i'm including this quote from you after that i read after i posted this.. apparently made while i was typing ;)


I realized how wrong it was and, trying to be a bigger person about it, modified it within a minute of posting.



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MESOSCALE DISCUSSION 0878
NWS STORM PREDICTION CENTER NORMAN OK
1220 PM CDT THU MAY 30 2013

AREAS AFFECTED...CNTRL/SRN OK...FAR NWRN TX

CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY

VALID 301720Z - 301945Z

PROBABILITY OF WATCH ISSUANCE...95 PERCENT

SUMMARY...A TORNADO WATCH WILL LIKELY BE ISSUED BY MID-AFTERNOON
WITH THE POTENTIAL FOR A FEW DISCRETE SUPERCELLS CAPABLE OF
PRODUCING VERY LARGE HAIL AND A COUPLE OF STRONG TORNADOES.

DISCUSSION...TCU/CB HAS PERSISTED ALONG THE INTERSECTION OF THE
EFFECTIVE DRYLINE AND LOW-LEVEL THERMAL AXIS. DESPITE FOCUS FOR
LARGER-SCALE ASCENT SHIFTING NEWD/TENDENCY FOR MID-LEVEL
TEMPERATURES TO WARM THIS AFTERNOON...CONTINUED HEATING OF A VERY
RICHLY BUOYANT AIR MASS SHOULD RESULT IN SUSTENANCE OF INTENSIFYING
UPDRAFTS ALONG THE DRYLINE AND PERHAPS THE REMNANT OUTFLOW BOUNDARY
ACROSS N-CNTRL OK. WITH AN ENLARGED HODOGRAPH EVIDENT IN THE PURCELL
PROFILER...CHARACTERIZED BY STRONG LOW-LEVEL SHEAR AND SUBSTANTIAL
VEERING OF THE WIND PROFILE INTO THE MID-LEVELS...SETUP WILL BE
HIGHLY FAVORABLE FOR DISCRETE SUPERCELLS.

..GRAMS/MEAD.. 05/30/2013


ATTN...WFO...TSA...FWD...OUN...SJT...

LAT...LON 35869815 36259678 36259633 35839586 35219594 33859694
33619748 33309888 33549936 34019930 34529912 35109843
35869815
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hey Everyone..the CMC has an east coast rider..

12z CMC









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Quoting Bluestorm5:
I mean, I don't see any problems with high schoolers on here. They all posted useful information and USUALLY get their facts right.


I dont see what some peoples problems are.
Member Since: October 20, 2012 Posts: 7 Comments: 2866
Quoting Bluestorm5:
At post 129, enjoy your ban for foul language in that meme.


I don't think a common expression for a bodily function qualifies as foul language. Bit coarse, maybe, but not exactly ban material.
Member Since: July 20, 2008 Posts: 0 Comments: 2426
Quoting FunnelVortex:


Yeah. That meme was offensive considering I AM a highschooler.
I mean, I don't see any problems with high schoolers on here. They all posted useful information and USUALLY get their facts right.
Member Since: Posts: Comments:
Quoting Bluestorm5:
At post 129, enjoy your ban for foul language in that meme.

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Quoting Patrap:

SEL0

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 250
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CDT THU MAY 30 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF
FAR NORTHEAST IOWA
FAR SOUTHEAST MINNESOTA
WESTERN AND CENTRAL WISCONSIN

* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM NOON UNTIL
700 PM CDT.

* PRIMARY THREATS INCLUDE...
SEVERAL TORNADOES POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF
LONEROCK WISCONSIN TO 50 MILES WEST NORTHWEST OF RHINELANDER
WISCONSIN. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY ACROSS THE WATCH AREA THIS AFTERNOON AS LARGE-SCALE
FORCING STRENGTHENS AHEAD OF MIDLEVEL TROUGH. GIVEN THE COMBINATION
OF A MOIST...MODERATELY UNSTABLE AIR MASS AND MODERATELY STRONG
DEEP-LAYER SHEAR...THE POTENTIAL WILL EXIST FOR ORGANIZED STORMS
INCLUDING SUPERCELLS AND BOWS WITH A RISK FOR MAINLY DAMAGING WINDS
AND A FEW TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 19030.


...MEAD


I'm in the middle of that box.
Member Since: October 20, 2012 Posts: 7 Comments: 2866
Quoting seminolesfan:
agitate much? this was a little more than needed, and probably not going to help the person struggling with things. the choice is yours..
edit: in fairness, i'm including this quote from you that i read after i posted this.. apparently made while i was typing ;)
Quoting seminolesfan:


I edited that comment because it was uncalled for...
Member Since: Posts: Comments:

SEL0

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 250
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CDT THU MAY 30 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF
FAR NORTHEAST IOWA
FAR SOUTHEAST MINNESOTA
WESTERN AND CENTRAL WISCONSIN

* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM NOON UNTIL
700 PM CDT.

* PRIMARY THREATS INCLUDE...
SEVERAL TORNADOES POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF
LONEROCK WISCONSIN TO 50 MILES WEST NORTHWEST OF RHINELANDER
WISCONSIN. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY ACROSS THE WATCH AREA THIS AFTERNOON AS LARGE-SCALE
FORCING STRENGTHENS AHEAD OF MIDLEVEL TROUGH. GIVEN THE COMBINATION
OF A MOIST...MODERATELY UNSTABLE AIR MASS AND MODERATELY STRONG
DEEP-LAYER SHEAR...THE POTENTIAL WILL EXIST FOR ORGANIZED STORMS
INCLUDING SUPERCELLS AND BOWS WITH A RISK FOR MAINLY DAMAGING WINDS
AND A FEW TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 19030.


...MEAD
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Good afternoon everyone. It looks like most of the USA faired well after yesterday's severe weather which is always a great thing. It also looks like an impressive blob is over the Carib. Is that bringing any of you out in the area much rain?
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Quoting Bluestorm5:
At post 129, enjoy your ban for foul language in that meme.


Yeah. That meme was offensive considering I AM a highschooler.
Member Since: October 20, 2012 Posts: 7 Comments: 2866
Thankee, Patrap.
Much appreciated.
Will read that in a while.
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Split Window MET-9


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At post 129, enjoy your ban for foul language in that meme.
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I'm convinced the GFS doesn't know what it wants to do, splits the BoC system into two lows yet again after having a fully mature cyclone on the 6z. It's been very consistent though that there will be a very potent tropical wave going into next week though in the MDR.
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Quoting Bluestorm5:
There's no one younger than I am on here right now because school is still not out in most states. And the younger people that I do know of (wxchaser97, TA13, and couple others) aren't wishcasters. They take meteorology seriously like I do and they've posted useful information.


I edited that comment because it was uncalled for...
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Okay, lets check my forecast...

HOLY!

Member Since: October 20, 2012 Posts: 7 Comments: 2866
Quoting seminolesfan:
I'm out for now...

Gotta love when school is out for the summer; All the self entitled brats love to throw around their opinions based on wishes and dreams and unicorn farts...
There's no one younger than I am on here right now because school is still not out in most states. And the younger people that I do know of (wxchaser97, TA13, and couple others) aren't wishcasters. They take meteorology seriously like I do and they've posted useful information.
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sheesh...
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Quoting FunnelVortex:



Debby wasn't much to look at. It was a horribly sheared storm, I can't believe they had it designated for so long.




Yeah,but reached winds of 65 mph
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Analysis and Numerical Simulations of the Saharan Air Layer and Its Effect on Easterly Wave Disturbances.

Karyampudi, V. Mohan; Carlson, Toby N.
Journal of Atmospheric Sciences, vol. 45, Issue 21, pp.3102-3136


Journal of Atmospheric Sciences, vol. 45, Issue 21, pp.3102-3136
A Conceptual model of the Saharan Air Layer (SAL) and easterly wave disturbance is presented in light of diagnostic analyses of dust outbreaks.Numerical simulations of the SAL were carried out to 5 days for two case studies using the Penn State/NCAR limited-area tropical model. The region of simulations encompasses North Africa and the eastern tropical Atlantic Ocean. One set of simulations used a horizontal resolution of 220 km. Analysis of the simulations emphasize the structure of the SAL and easterly wave disturbance and evaluation is made with reference to available observations and a conceptual model. Because both cases are similar, emphasis of the sensitivity tests is placed on the August 1974 case only. These tests include the effect of enhancing the SAL in the initial conditions, the role of surface sensible heating, the role of latent heating in the atmosphere, and the effect of heating due to radiative warming of the aerosol. A fine-mesh simulation of 110 km was also made to resolve the mesoscale features of the SAL.Topics treated in the discussion include 1) the interaction of the SAL with attendant easterly wave disturbances, 2) the frontal structure of the SAL along the leading and southern boundary of the SAL, 3) forcing of vertical motions and the transverse/vertical circulations in the SAL front, 4) the nature of the anticyclonic curvature of the SAL plume along the coast of Africa and 5) the role of aerosol radiative heating in preserving the characteristics of the SAL as it moves toward the west. A significant conclusion is that the SAL contributes to forcing of vertical motions and cumulus convection and is therefore important (if not necessary) in the initial development of some easterly wave disturbances. Without surface heating over the Sahara or a proper initialization of the desert mixing layer, atmospheric forcing tends to be very much weaker than for the cam where a deep SAL is present.
DOI: 10.1175/1520-0469(1988)045
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Barbara has a naked squirrel? There is a solution for that...



(oh, you said naked "swirl"...)

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Barbara in Mexico..
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Quoting pottery:

Hi Tropics.

To me, from experience, a heavy layer of SAL results in higher temps here.
It really does not block the sunshine much, and in fact creates a 'greenhouse' effect.

Do you know whether this is true for ocean temps?
I'm not sure.

Anyone ??


Hi Pottery. Here is the same when those sal events occur with very warm temps and drier conditions.About the ocean effects,I would like to know like you.
Member Since: April 29, 2009 Posts: 75 Comments: 13303
I'm out for now...

Gotta love when school is out for the summer...
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Anyway, just have to wait for storms to fires up this afternoon.
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Barbara lost her convection, so she will be ANDREA if she re-forms.
Member Since: October 20, 2012 Posts: 7 Comments: 2866
watch this rain off the east coast here.maybe a low will start soon.
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Quoting stormchaser19:
Andrea...Debby part II




Debby wasn't much to look at. It was a horribly sheared storm, I can't believe they had it designated for so long.
Member Since: October 20, 2012 Posts: 7 Comments: 2866
Storm cat's blog says Barbara will become a cat 1 and head to New Orleans......
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Why is my opinion subjugated?

Weather is a science. Terminology has defined meanings; Especially in more complex fields of study.
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Quoting Bluestorm5:
Got to love it when a person is correcting everybody. Seriously? This isn't a college class. This is a blog where everybody can post information regarding the ongoing weather events and voices their opinions, right and wrong. The last thing we all needed is someone rudely correcting every single mistake on the blog. Correcting one person's mistake is okay, but correcting everybody's mistake is too much.


For example?
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Got to love it when a person is correcting everybody. Seriously? This isn't a college class. This is a blog where everybody can post information regarding the ongoing weather events and voices their opinions, right and wrong. The last thing we all needed is someone rudely correcting every single mistake on the blog. Correcting one person's mistake is okay, but correcting everybody's mistake is too much.
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Quoting HurricaneDean07:

Hey pottery :) good to see you on the blog again.

Yeah !
Good to see you.
How's the weather ? :):))
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Quoting Torito:
It is still alive, which means it is still classified as a basin crossing system, correct?

000
WTPZ42 KNHC 301446
TCDEP2

TROPICAL DEPRESSION BARBARA DISCUSSION NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP022013
800 AM PDT THU MAY 30 2013

FINDING THE LOW-LEVEL CENTER OF THE CYCLONE HAS BEEN A REAL
CHALLENGE THIS MORNING. THE CENTER OF ROTATION THAT IS EVIDENT ON
VISIBLE SATELLITE IMAGERY IS NOT CONSISTENT WITH SURFACE WIND
OBSERVATIONS FROM STANDARD AND AUTOMATED MEXICAN WEATHER STATIONS.
IN FACT...THERE IS SOME DOUBT THAT A WELL-DEFINED SURFACE CENTER
EVEN EXISTS. HOWEVER...WE THINK THE MOST PRUDENT ACTION AT THIS
TIME IS TO MAINTAIN THE SYSTEM AS A DEPRESSION UNTIL ADDITIONAL
VISIBLE IMAGES AND SURFACE DATA BECOME AVAILABLE. THE CURRENT
ADVISORY POSITION IS IN REASONABLE AGREEMENT WITH THE SURFACE WIND
DATA.

THE INITIAL MOTION IS A VERY UNCERTAIN 310/3. MOST OF THE DYNAMICAL
GUIDANCE SUGGESTS THAT THE CENTER WILL NOT MOVE VERY FAR INTO THE
GULF OF MEXICO. SINCE THE SURFACE CENTER HAS BECOME VERY DISRUPTED
AND IS NOT EXPECTED TO MOVE FAR FROM LAND...THE FORECAST SHOWS THE
SYSTEM DISSIPATING IN A DAY OR SO.

ALTHOUGH THE CYCLONE SHOULD DISSIPATE SOON...HEAVY RAINS REMAIN A
SERIOUS CONCERN. DISTURBED WEATHER ASSOCIATED WITH THE REMNANTS
OF BARBARA IS LIKELY TO PERSIST OVER SOUTHEASTERN MEXICO AND
PORTIONS OF CENTRAL AMERICA FOR THE NEXT SEVERAL DAYS...AND A
HEIGHTENED RISK OF DANGEROUS FLOODING AND MUD SLIDES WILL CONTINUE
OVER THIS REGION.

FORECAST POSITIONS AND MAX WINDS

INIT 30/1500Z 18.5N 95.0W 25 KT 30 MPH...INLAND
12H 31/0000Z 18.7N 95.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 31/1200Z 18.8N 96.2W 20 KT 25 MPH...POST-TROP/REMNT LOW
36H 01/0000Z...DISSIPATED


nope
its just about dead and NHC said if it cross-basin NHC will rite that advisory in atlantic section its still E Pac
Member Since: June 13, 2009 Posts: 2 Comments: 9576
Quoting pottery:

Hi Tropics.

To me, from experience, a heavy layer of SAL results in higher temps here.
It really does not block the sunshine much, and in fact creates a 'greenhouse' effect.

Do you know whether this is true for ocean temps?
I'm not sure.

Anyone ??

Hey pottery :) good to see you on the blog again.
Member Since: Posts: Comments:
Andrea...Debby part II


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This place is such a trip.

Everyone wants to be the smart one, I guess.

Please do not engage in personal attacks!

I have done nothing to you.

Take a chill pill, buddy.


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I've had enough of that crap.
Quoting seminolesfan:


WOW!


I thought I was discussing weather dynamics in a weather blog.

Color me embarrassed!

All you do is correct every post that doesn't have "proof" behind it. This blog is made for am mature weather lovers to express there thoughts not get corrected by some guy, just because we don't have the "facts" 100% right.
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Quoting Tropicsweatherpr:
A big sal outbreak has begun to emerge from West Africa.This will likely cool a bit more the MDR waters.


Hi Tropics.

To me, from experience, a heavy layer of SAL results in higher temps here.
It really does not block the sunshine much, and in fact creates a 'greenhouse' effect.

Do you know whether this is true for ocean temps?
I'm not sure.

Anyone ??
Member Since: Posts: Comments:
Ah, spring in the Rockies...

I-70 was closed briefly this morning due to numerous accidents caused by a spring snowstorm. The closure was near the Eisenhower Tunnel, west of Denver.



(Traffic cam image near the tunnel right around the time it was closed, courtesy of the Denver Post, full article here)


The tunnel is open again, but areas along the Continental Divide are still getting weather, as you can see from this live shot:





And just yesterday, I-70 was closed near Grand Junction due to a rock slide...



(courtesy of The Denver Channel, full article here)

Ah well, I'd rather have snow and rockslides than wildfires. Keep the moisture coming!
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105. HadesGodWyvern (Mod)
103. Torito 4:56 PM GMT on May 30, 2013
It is still alive, which means it is still classified as a basin crossing system, correct?



Don't think so.. if they record it as still overland Mexico.
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Quoting HurricaneDean07:

You seriously piss me off. Just because someone is not 100% you correct them and try to make everyone look stupid. There WAS a feeder band earlier around 1 am this morning. There are you happy, I corrected it. now let people say what they believe is right and stop trying to correct and moderate every thing that isn't perfect.


WOW!


I thought I was discussing weather dynamics in a weather blog.

Color me embarrassed!
Member Since: Posts: Comments:
It is still alive, which means it is still classified as a basin crossing system, correct?

000
WTPZ42 KNHC 301446
TCDEP2

TROPICAL DEPRESSION BARBARA DISCUSSION NUMBER 9
NWS NATIONAL HURRICANE CENTER MIAMI FL EP022013
800 AM PDT THU MAY 30 2013

FINDING THE LOW-LEVEL CENTER OF THE CYCLONE HAS BEEN A REAL
CHALLENGE THIS MORNING. THE CENTER OF ROTATION THAT IS EVIDENT ON
VISIBLE SATELLITE IMAGERY IS NOT CONSISTENT WITH SURFACE WIND
OBSERVATIONS FROM STANDARD AND AUTOMATED MEXICAN WEATHER STATIONS.
IN FACT...THERE IS SOME DOUBT THAT A WELL-DEFINED SURFACE CENTER
EVEN EXISTS. HOWEVER...WE THINK THE MOST PRUDENT ACTION AT THIS
TIME IS TO MAINTAIN THE SYSTEM AS A DEPRESSION UNTIL ADDITIONAL
VISIBLE IMAGES AND SURFACE DATA BECOME AVAILABLE. THE CURRENT
ADVISORY POSITION IS IN REASONABLE AGREEMENT WITH THE SURFACE WIND
DATA.

THE INITIAL MOTION IS A VERY UNCERTAIN 310/3. MOST OF THE DYNAMICAL
GUIDANCE SUGGESTS THAT THE CENTER WILL NOT MOVE VERY FAR INTO THE
GULF OF MEXICO. SINCE THE SURFACE CENTER HAS BECOME VERY DISRUPTED
AND IS NOT EXPECTED TO MOVE FAR FROM LAND...THE FORECAST SHOWS THE
SYSTEM DISSIPATING IN A DAY OR SO.

ALTHOUGH THE CYCLONE SHOULD DISSIPATE SOON...HEAVY RAINS REMAIN A
SERIOUS CONCERN. DISTURBED WEATHER ASSOCIATED WITH THE REMNANTS
OF BARBARA IS LIKELY TO PERSIST OVER SOUTHEASTERN MEXICO AND
PORTIONS OF CENTRAL AMERICA FOR THE NEXT SEVERAL DAYS...AND A
HEIGHTENED RISK OF DANGEROUS FLOODING AND MUD SLIDES WILL CONTINUE
OVER THIS REGION.

FORECAST POSITIONS AND MAX WINDS

INIT 30/1500Z 18.5N 95.0W 25 KT 30 MPH...INLAND
12H 31/0000Z 18.7N 95.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
24H 31/1200Z 18.8N 96.2W 20 KT 25 MPH...POST-TROP/REMNT LOW
36H 01/0000Z...DISSIPATED

Member Since: April 30, 2013 Posts: 5 Comments: 4203
Quoting Torito:


Sorry, once i get confused, there is no return for me. :/

No worries. Let's just move along. :)
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Quoting seminolesfan:


Feeder Bands
Lines or bands of low-level clouds that move (feed) into the updraft region of a thunderstorm, usually from the east through south (i.e., parallel to the inflow). Same as inflow bands. This term also is used in tropical meteorology to describe spiral-shaped bands of convection surrounding, and moving toward, the center of a tropical cyclone.(from NOAA)

Its not moving toward the center. It is removed from the center. Just because convection pops in the storm area DOES NOT MEAN that convection is feeding the circulation. This convection is exactly the opposite.
It is in COMPETITION with the feeder convection.

You seriously piss me off. Just because someone is not 100% you correct them and try to make everyone look stupid. There WAS a feeder band earlier around 1 am this morning. There are you happy, I corrected it. now let people say what they believe is right and stop trying to correct and moderate every thing that isn't perfect.
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Quoting seminolesfan:


I'm not gonna harp on this too much longer.
I feel like you don't WANT to understand what I'm trying to show you.

(And there is so much wrong with your statement here I'm not even gonna try to fix it up.) *shakes head*


Sorry, once i get confused, there is no return for me. :/
Member Since: April 30, 2013 Posts: 5 Comments: 4203
India Meteorological Department
Tropical Cyclone Advisory #9
DEPRESSION BOB02-2013
17:30 PM IST May 30 2013
===============================

At 12:00 PM UTC, the depression over coastal West Bengal and neighborhood moved slowly northeastward with the speed of about 3 knots in the last 12 hours and now lays near 22.7N 87.3E, about 30 km north of Midnapore, West Bengal.

The system is likely to move slowly northwestward and weaken gradually into a low pressure area during the next 24 hours.
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About JeffMasters

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.