Dr. Jeff Masters' WunderBlog

90L comes close to being the season's first named storm
Posted by: Dr. Jeff Masters, 5:30 PM GMT on May 23, 2009 +2
The large extratropical storm (90L) that has been pounding Florida, the Bahamas, and Haiti this week with heavy rain and high surf has moved ashore over Mississippi. Last night and this morning, the storm put on an impressive burst of heavy thunderstorm activity and came close to becoming a subtropical or tropical depression. Winds at the Fort Morgan, AL station were 44 mph, gusting to 52 mph, and winds at Dauphin Island, Alabama coastal station were sustained at 39 mph, gusting to 48 mph at between 8am and 10am EDT this morning. While these winds were in excess of the 39 mph threshold of tropical storm force, both measurements were taken at elevations higher than the international wind measurement standard of ten meters, so the top measured winds of 90L were actually slightly less than tropical storm force. Had 90L spent another six hours over water, it very likely would have been declared a tropical/subtropical depression/storm.

The circulation around 90L continues to mean rain for Florida, but the rains will be lessening today. Rainfall amounts as high as 28 inches were measured this week in Northern Florida at Brunnell. Rainfall amounts of 2 - 3 inches have accumulated along the Alabama, Mississippi, and Florida Panhandle coasts from 90L so far (Figure 1).


Figure 1. Estimated rainfall from the Mobile, AL radar.

There are no other threat areas in the Atlantic to discuss today, so have a great weekend, and I'll have a new blog post by Tuesday.

Jeff Masters
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Categories: Hurricane
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1001. Cavin Rawlins 6:03 PM GMT on May 25, 2009    
h23, yea it is. Thanks
Member Since: July 24, 2005 Posts: 407 Comments: 19076
1002. Levi32 6:03 PM GMT on May 25, 2009    
Adrian and 456, this shames your precious WeatherTap high-res visible loops =P

NASA High-Resolution Visible loop of the Bahamas

Mid-level circulation continuing to develop. Dry air is getting punched into the west side of the system by the sub-tropical jet, as evidenced by the lack of low-level cloud streets to the west of the system, which you can see clearly in the loop.
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1003. Levi32 6:06 PM GMT on May 25, 2009    
You can also see the dry air here surging through the central Bahamas:

Member Since: November 24, 2005 Posts: 586 Comments: 25459
1004. hurricane23 6:06 PM GMT on May 25, 2009    
Levi i use weathertap for the quick updates but i use a variety of different sources for sat imagery.
Member Since: May 14, 2006 Posts: 8 Comments: 13277
1005. Cavin Rawlins 6:07 PM GMT on May 25, 2009    
Quoting Levi32:
Adrian and 456, this shames your precious WeatherTap high-res visible loops =P

NASA High-Resolution Visible loop of the Bahamas

Mid-level circulation continuing to develop. Dry air is getting punched into the west side of the system by the sub-tropical jet, as evidenced by the lack of low-level cloud streets to the west of the system, which you can see clearly in the loop.


lol....NASA does not have rapid scan =P
Member Since: July 24, 2005 Posts: 407 Comments: 19076
1006. KEEPEROFTHEGATE (Mod) 6:07 PM GMT on May 25, 2009    
Quoting melwerle:


LOL Keeper! Same problem here. And our builder didn't leave us plywood.
thats just one side of the building mel if you count the east side north side and south side its over 1100 windows and iam in serious trouble if we ever get 150mph+ winds here
Member Since: July 15, 2006 Posts: 144 Comments: 40651
1007. Cavin Rawlins 6:08 PM GMT on May 25, 2009    
Quoting Levi32:
Adrian and 456, this shames your precious WeatherTap high-res visible loops =P

NASA High-Resolution Visible loop of the Bahamas

Mid-level circulation continuing to develop. Dry air is getting punched into the west side of the system by the sub-tropical jet, as evidenced by the lack of low-level cloud streets to the west of the system, which you can see clearly in the loop.


How did you save the animation or its settings seperate from the webpage.
Member Since: July 24, 2005 Posts: 407 Comments: 19076
1008. melwerle 6:08 PM GMT on May 25, 2009    
1006. OMG. THAT'S HORRIBLE. You would need two weeks notice to get everything done.
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1009. Levi32 6:09 PM GMT on May 25, 2009    
Quoting hurricane23:
Levi i use weathertap for the quick updates but i use a variety of different sources for sat imagery.


Lol I know, just teasing yah.

The RAMSDIS floaters update as fast as 5 mins after the image is taken, I can't imagine WeatherTap updating any faster than that. Nasa is also pretty fast.
Member Since: November 24, 2005 Posts: 586 Comments: 25459
1010. hurricane23 6:10 PM GMT on May 25, 2009    
I really enjoy useing metwise-(extreme forcasting)which is a set up somewhat similar to AWIPS.It's subscription based
Member Since: May 14, 2006 Posts: 8 Comments: 13277
1011. Levi32 6:11 PM GMT on May 25, 2009    
Quoting Weather456:


lol....NASA does not have rapid scan =P


This does though lol (when a storm is active)

Nasa used to have rapid-scan, I don't understand why it doesn't anymore this year. It still updates every 15 mins though which isn't bad.
Member Since: November 24, 2005 Posts: 586 Comments: 25459
1012. Levi32 6:12 PM GMT on May 25, 2009    
Quoting Weather456:


How did you save the animation or its settings seperate from the webpage.


Use the arguments found on this page to customize a satellite URL.
Member Since: November 24, 2005 Posts: 586 Comments: 25459
1013. Cavin Rawlins 6:16 PM GMT on May 25, 2009    
Member Since: July 24, 2005 Posts: 407 Comments: 19076
1014. plywoodstatenative 6:19 PM GMT on May 25, 2009    
I will explain another day and time, what I meant about requesting information about Press and SJ. Nothing bad, trust me.
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1015. Cavin Rawlins 6:20 PM GMT on May 25, 2009    
thanks Levi
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1016. Levi32 6:23 PM GMT on May 25, 2009    
No problem.
Member Since: November 24, 2005 Posts: 586 Comments: 25459
1017. CaicosRetiredSailor 6:31 PM GMT on May 25, 2009    
Quoting Levi32:
You can also see the dry air here surging through the central Bahamas:


I am South of the "dry air surge" here (Providenciales), we have had rain all day.
Light breeze is variable SE to S
and Bar. is still high.

... and Thor is bowling upstairs again!
(Thunder & Lightning)
power off once already today.
(I winced at the strike which shut it off....
too close)

CRS
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1018. plywoodstatenative 6:41 PM GMT on May 25, 2009    
456 when you have a chance check mail, I think you will understand what I am saying.
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1019. plywoodstatenative 6:53 PM GMT on May 25, 2009    
blog hole
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1020. BahaHurican 6:58 PM GMT on May 25, 2009    
Storms just started at my house. I'm glad I dashed away from work when I did. I got into the house just as the rain came down.
Member Since: October 25, 2005 Posts: 19 Comments: 17676
1021. Stormchaser2007 7:01 PM GMT on May 25, 2009    
Quoting hurricane23:
I really enjoy useing metwise-(extreme forcasting)which is a set up somewhat similar to AWIPS.It's subscription based


Metwise isnt allowing online ordering currently...bummer.
Member Since: June 9, 2007 Posts: 4 Comments: 15248
1022. WPBHurricane05 7:06 PM GMT on May 25, 2009    
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
304 PM EDT MON MAY 25 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTH CENTRAL BROWARD COUNTY IN SOUTH FLORIDA.

* UNTIL 345 PM EDT

* AT 304 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
HIGHWAY 27 OVER NORTH CENTRAL BROWARD COUNTY...AND MOVING EAST AT
5 MPH.

* THE STORM WILL AFFECT...
RURAL NORTHERN BROWARD COUNTY
AND SURROUNDING COMMUNITIES.

SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.
Member Since: July 31, 2006 Posts: 56 Comments: 7929
1023. BahaHurican 7:11 PM GMT on May 25, 2009    
Wow! Within a few seconds of my typing that message, a massive lightning strike knocked out our power! I saw (and felt!) the energy jump from my laptop to my hand. Luckily the laptop is OK. And thank goodness for dialup.

Will let u know how long this page takes to load on dialup.
Member Since: October 25, 2005 Posts: 19 Comments: 17676
1024. plywoodstatenative 7:12 PM GMT on May 25, 2009    
Baha, thats my region you know. No wonder I am seeing power surges.
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1025. plywoodstatenative 7:14 PM GMT on May 25, 2009    
two cells both heading South South East. From west of me
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1026. HadesGodWyvern 7:14 PM GMT on May 25, 2009    
India Meteorological Department
Tropical Cyclone Warning Number SIXTEEN
CYCLONIC STORM AILA (BOB02-2009)
20:30 PM IST May 25 2009
===============================

Subject: Cyclonic storm over Gangetic West Bengal.

At 15:00 PM UTC, The severe cyclonic storm over Gangetic West Bengal Bengal weakened into cyclonic storm and moved nearly northerly direction. Cyclonic Storm Aila lays over Gangetic West Bengal about 50 kms north of Kolkata. The system is likely to move in a near northerly direction and weaken gradually.

Under its influence, rainfall at most places with heavy to very heavy falls at a few places and isolated extremely heavy falls (%u226525 cm) is likely over Gangetic West Bengal during next 24 hours and over Sub-Himalayan West Bengal & Sikkim during next 48 hours.

Rain/thundershower is also likely at most places over Assam and Meghalaya with isolated heavy to very heavy fall during next 48 hours and over north Orissa during next 24 hrs.

Gale wind speed reaching 25-30 knots gusting 40 knots likely along and off West Bengal coasts during next 12 hours. Squally winds reaching 25-30 knots gusting to 35 knots likely along and off north Orissa coast during next 12 hours.

Sea condition will be very rough to high along and off West Bengal coast during next 12 hours. Fishermen are advised not to venture into sea during next 12 hours.
Member Since: May 24, 2006 Posts: 43 Comments: 36689
1027. BahaHurican 7:22 PM GMT on May 25, 2009    
OK, it took about 30 seconds. I took so long to come back this time because I needed to move my car. There are 3 or 4 inch deep puddles of rain water around my house - this in less than 15 minutes!

I was going to try to upload some pics I took earlier this p.m. while I was on the road, but dunno if I'll try that now, given the lack of power.
Member Since: October 25, 2005 Posts: 19 Comments: 17676
1028. BahaHurican 7:29 PM GMT on May 25, 2009    
Quoting plywoodstatenative:
Baha, thats my region you know. No wonder I am seeing power surges.
Not sure what u mean by "your region". Where are you located again? I'm in SW New Providence.
Member Since: October 25, 2005 Posts: 19 Comments: 17676
1029. plywoodstatenative 7:36 PM GMT on May 25, 2009    
baha, Just east of Coral Springs
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1030. Orcasystems 7:36 PM GMT on May 25, 2009    
Blog Update

AOI #1

AOI #2
Member Since: October 1, 2007 Posts: 77 Comments: 26077
1031. Orcasystems 7:39 PM GMT on May 25, 2009    
Member Since: October 1, 2007 Posts: 77 Comments: 26077
1032. plywoodstatenative 7:39 PM GMT on May 25, 2009    
Baha, that cell you spoke of is now heading into the eastern parts of Ft. Lauderdale and we will be seeing reports of damage. Heading for tamarac and surrounding areas, still has hail attached to it. Purplish, wouldn't be surprised if there is rotation attached to it as well.
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1033. WPBHurricane05 7:39 PM GMT on May 25, 2009    
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
338 PM EDT MON MAY 25 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL BROWARD COUNTY IN SOUTH FLORIDA.

* UNTIL 430 PM EDT

* AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
TAMARAC...AND MOVING NORTHEAST AT 5 MPH.

* THE STORM WILL AFFECT...
TAMARAC...
LAUDERDALE LAKES...
NORTH LAUDERDALE...
AND SURROUNDING COMMUNITIES.

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. IF
OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES AND
AVOID WATER. MOVE INDOORS OR INSIDE A VEHICLE IF POSSIBLE. AVOID
USING THE TELEPHONE UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG
UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
Member Since: July 31, 2006 Posts: 56 Comments: 7929
1034. HadesGodWyvern 7:42 PM GMT on May 25, 2009    


another low to form from the monsoon?
Member Since: May 24, 2006 Posts: 43 Comments: 36689
1035. EYEoftheCANE 7:42 PM GMT on May 25, 2009    
Is this cell heading north towards Palm Beach county ???
1036. plywoodstatenative 7:43 PM GMT on May 25, 2009    
eye, do not know. going to check Nexrad
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1037. WPBHurricane05 7:43 PM GMT on May 25, 2009    
Quoting EYEoftheCANE:
Is this cell heading north towards Palm Beach county ???


Which cell?

Member Since: July 31, 2006 Posts: 56 Comments: 7929
1038. plywoodstatenative 7:46 PM GMT on May 25, 2009    
WPB, click on advanced options and then on Composite. gives you a better look
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1039. EYEoftheCANE 7:46 PM GMT on May 25, 2009    
nice graphic WPB - now I can see why I hear thunder all around me - I'm in Boca...
1040. Stormchaser2007 7:50 PM GMT on May 25, 2009    
Quoting plywoodstatenative:
WPB, click on advanced options and then on Composite. gives you a better look


Composite overdoes the intensity of the cells greatly. Not really that good...
Member Since: June 9, 2007 Posts: 4 Comments: 15248
1041. plywoodstatenative 7:49 PM GMT on May 25, 2009    
talking about thunder? sounds like someone bowling heavily outside right now.
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1042. WPBHurricane05 7:50 PM GMT on May 25, 2009    
Quoting plywoodstatenative:
WPB, click on advanced options and then on Composite. gives you a better look


Never saw that...thanks.

Member Since: July 31, 2006 Posts: 56 Comments: 7929
1043. plywoodstatenative 7:51 PM GMT on May 25, 2009    
gives a better idea though of the range of the storms we are looking at. Heck I am north of where the hail is located and it looks like its almost 7pm outside right now
Member Since: November 15, 2005 Posts: 16 Comments: 4147
1045. SBG 7:51 PM GMT on May 25, 2009    
Quoting hurricane23:
Sea level pressures are above average over the tropical atlantic.The sub-tropical jet is way south which may mean we will see alot of development above 20N.Personally iam not to thrilled about this season and if the NCEP models verify nicely the atl looks rather hostile in the coming weeks.

456 click on SW atlantic for a better view.


23 tends to be very bearish and responsible with his predictions. Facts over hype, fear or wishcasting. Him feeling this way makes me a little uneasy.
Member Since: August 12, 2007 Posts: 0 Comments: 19
1046. WPBHurricane05 7:54 PM GMT on May 25, 2009    
Good Lord!! I think everyone in South Florida should take cover. Every single storm is severe!

SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
351 PM EDT MON MAY 25 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
SOUTH CENTRAL BROWARD COUNTY IN SOUTH FLORIDA.

* UNTIL 445 PM EDT

* AT 349 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
INTERSECTION U.S. 27 PINES BLVD...AND MOVING NORTHEAST AT 5 MPH.

* THE STORM WILL AFFECT...
INTERSECTION U.S. 27 PINES BLVD...
PEMBROKE PINES...
INTERSECTION I-75 AND GRIFFIN ROAD...
AND SURROUNDING COMMUNITIES.

Member Since: July 31, 2006 Posts: 56 Comments: 7929
1047. WPBHurricane05 7:55 PM GMT on May 25, 2009    
Quoting SBG:


23 tends to be very bearish and responsible with his predictions. Facts over hype, fear or wishcasting. Him feeling this way makes me a little uneasy.


Very true.
Member Since: July 31, 2006 Posts: 56 Comments: 7929
1048. HadesGodWyvern 7:56 PM GMT on May 25, 2009    
Cyclone Aila has claimed at least 28 lives in eastern India and neighbouring Bangladesh. Nineteen people were killed in the Indian metropolis Kolkata and its surroundings. The storm, which is being accompanied by wind speeds of more than 120 kilometres per hour, has caused widespread material damage and virtually brought life to a halt.

At least nine people were killed in Bangladesh, and dozens of people are still missing. More than 300,000 people there have been trapped by the high water levels. In India, more than a hundred thousand people have been forced to evacuate their homes.

Heavy rainfall and high waves have flooded hundreds of coastal villages in both countries, dams have broken and many rivers have burst their banks.
Member Since: May 24, 2006 Posts: 43 Comments: 36689
1049. BahaHurican 7:57 PM GMT on May 25, 2009    
Well, tried to upload an image, but it's too big to come through quickly on dialup.

I'm headed back to work right now, while the rain seems to be holding up. If we have power there, and if I get onto the wireless system, I'll check in when I get there.

Later.
Member Since: October 25, 2005 Posts: 19 Comments: 17676
1050. EYEoftheCANE 7:58 PM GMT on May 25, 2009    
here comes the rain - really hard & the wind is blowing pretty hard too.......
1051. Stormchaser2007 8:07 PM GMT on May 25, 2009    
Large cell just west of Fort Lauderdale.

Member Since: June 9, 2007 Posts: 4 Comments: 15248

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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.

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