Dr. Jeff Masters' WunderBlog

First Invest of the year peters out; Florida gets soaked
Posted by: Dr. Jeff Masters, 1:00 PM GMT on May 19, 2009 +3
A complex weather system is bringing showers and thunderstorms over Florida and the Bahamas, in association with a trough of low pressure. Two 1010 mb surface lows have developed--one over the Florida Keys, near 24N 81W, and the other over the south-central Bahamas, near 23N 77W. This second low was designated Invest 90L by the National Hurricane Center yesterday afternoon, and was the first area of interest so designated this year. At that time, they gave it a 30% chance of developing into a tropical cyclone by Wednesday. However, current satellite imagery shows little organization of the cloud pattern and no signs of a surface circulation, and the region is under high shear of 30 knots. 90L is being absorbed into the larger low over Florida, and is no longer a threat to develop, according to a Special Tropical Weather Outlook issued by NHC.


Figure 1. Current radar-estimated precipitation from the Melbourne radar.

The latest 00Z and 06Z runs of the computer models continue to forecast the intensification of an extratropical low near Florida over the next day. The low should bring heavy rain and possible flooding problems to Florida and the Bahamas this week as it moves west or west-northwest into the Gulf of Mexico. Up to eight inches of rain have already fallen over Florida so far (Figure 1), thanks in most part to a cold front that moved over the state during the past two days. Florida could use the rain--most of South Florida is under extreme drought, and Central Florida is under severe drought. The Lake Okeechobee water level is at 10.58 feet, which is about 3 feet below average. During the past week, the lake fell below the level that triggers water conservation measures for the first time since Tropical Storm Fay filled up the lake in August.

I don't expect development of a tropical or subtropical storm over the next two days, due to high wind shear. However, once the system moves into the Gulf of Mexico later this week, the ECMWF and UKMET models are predicting wind shear will drop enough over the northern Gulf of Mexico to allow some development. The GFS and NOGAPS models portray an unfavorable environment with higher shear. I'll give a 20% chance of this system eventually developing into a tropical or subtropical depression in the next seven days. The storm is expected to come ashore over Louisiana on Saturday (NOGAPS and UKMET models), or Sunday over Texas (ECMWF model). The GFS model dissipates the storm over the southern Gulf.

Jeff Masters
Categories: Hurricane
  Permalink | A A A
Reader Comments
Display: 0, 50, 100, 200 Sort: Newest First - Order Posted
Viewing: 501 - 551

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26Blog Index

503. canesrule1 7:33 PM GMT on May 19, 2009    
What the hell happened to our invest?
504. CybrTeddy 7:34 PM GMT on May 19, 2009    
Quoting canesrule1:
What the hell happened to our invest?


Absorbed by the larger low which has a fair chance of becoming 91L.
Member Since: July 8, 2005 Posts: 253 Comments: 20280
505. Patrap 7:34 PM GMT on May 19, 2009    
Member Since: July 3, 2005 Posts: 372 Comments: 111633
506. RobDaHood 7:35 PM GMT on May 19, 2009    
Quoting Cotillion:


Karen's still out there... ;)

yep, but she's still nekkid so we can't see her!

Cotillion, was is TD16 that parked itself over Honduras last year and drove us all nutz?

450. gbTracker
Fay was another one...went island hopping, never wanted to get both feet wet, lots of potential that just never happened. Then got to the keys and was trapped with nowhere to go. I remember the models looking like a mushroom. came onshore SW FL. then north then corkscrewed her way over to melborne up the East coast slowly and across to the panhandle...long, slow, and wet!
Member Since: September 2, 2008 Posts: 78 Comments: 25992
508. canesrule1 7:35 PM GMT on May 19, 2009    
Quoting CybrTeddy:


Absorbed by the larger low which has a fair chance of becoming 91L.
is there any chance the larger low will become a TD or TS
509. snotly 7:36 PM GMT on May 19, 2009    
Still seems over hyped to me. The whole thing still looks a tad on the baroclinic side so far. It may persist but I'm not so sure about any deep tropical development.
Member Since: August 27, 2005 Posts: 0 Comments: 668
510. KEEPEROFTHEGATE (Mod) 7:36 PM GMT on May 19, 2009    
Quoting canesrule1:
What the hell happened to our invest?
could not out run the wind and dry air
Member Since: July 15, 2006 Posts: 144 Comments: 40660
511. Cotillion 7:38 PM GMT on May 19, 2009    
Quoting RobDaHood:

yep, but she's still nekkid so we can't see her!

Cotillion, was is TD16 that parked itself over Honduras last year and drove us all nutz?

450. gbTracker
Fay was another one...went island hopping, never wanted to get both feet wet, lots of potential that just never happened. Then got to the keys and was trapped with nowhere to go. I remember the models looking like a mushroom. came onshore SW FL. then north then corkscrewed her way over to melborne up the East coast slowly and across to the panhandle...long, slow, and wet!


Yup, that was the bunny. Had Omar at the time too.
Member Since: August 23, 2008 Posts: 7 Comments: 5300
512. canesrule1 7:38 PM GMT on May 19, 2009    
Quoting KEEPEROFTHEGATE:
could not out run the wind and dry air
funny.............o..........no, not really.
513. Ossqss 7:40 PM GMT on May 19, 2009    
This has done OK with this system so far.



Link
Member Since: June 12, 2005 Posts: 6 Comments: 8154
514. KEEPEROFTHEGATE (Mod) 7:41 PM GMT on May 19, 2009    
its nice how it put us all on watch mode now as the season is 12 days away we get ready for the real deal
90l has made me more then ready for the approaching season
waitin on 91
Member Since: July 15, 2006 Posts: 144 Comments: 40660
517. FLWeatherFreak91 7:42 PM GMT on May 19, 2009    
Quoting Vortex95:
Just looked at the dry air can any one tell if it is being chocked off or is it just moving south?
It won't be choked off. But that doesn't mean it will develop either.
Member Since: December 1, 2006 Posts: 2 Comments: 3462
518. Vero1 7:43 PM GMT on May 19, 2009    
This system over Florida can't be that bad~~~no one is talking about ants yet like during Fay.
Member Since: July 21, 2008 Posts: 4 Comments: 2233
519. Vero1 7:44 PM GMT on May 19, 2009    
Thanks for the Updated Synopsis Storm
Member Since: July 21, 2008 Posts: 4 Comments: 2233
520. hurricanehanna 7:45 PM GMT on May 19, 2009    
Quoting StormW:
Surface circualtion exiting Florida coast near Ft. Myers.

rhut rho
Member Since: September 5, 2007 Posts: 0 Comments: 3214
521. RobDaHood 7:46 PM GMT on May 19, 2009    
Quoting Vero1:
This system over Florida can't be that bad~~~no one is talking about ants yet like during Fay.


That was my favorite post last year...Ants are contraflowing into my house...LOL

I saved that one...will have to dig it up
Member Since: September 2, 2008 Posts: 78 Comments: 25992
523. SavannahStorm 7:46 PM GMT on May 19, 2009    
Some wicked wave action going on off the GA coast.

Conditions at 41008 as of
(2:50 pm EDT)
1850 GMT on 05/19/2009:

- Wind Direction (WDIR): NE ( 40 deg true )
- Wind Speed (WSPD): 33.0 kts
- Wind Gust (GST): 40.8 kts
- Wave Height (WVHT): 11.8 ft
- Dominant Wave Period (DPD): 8 sec
- Average Period (APD): 5.9 sec
- Mean Wave Direction (MWD): ENE ( 60 deg true )


Member Since: September 22, 2005 Posts: 18 Comments: 2135
524. hurricanehanna 7:48 PM GMT on May 19, 2009    
Quoting StormW:


Hi hanna.


Hey Storm !
Member Since: September 5, 2007 Posts: 0 Comments: 3214
525. SavannahStorm 7:48 PM GMT on May 19, 2009    
Big waves off SC, too:

Full-screen
Station 41004
NDBC
Location: 32.501N 79.099W
Conditions as of:
Tuesday, May 19, 2009 2:50:00 PM
Winds: NE (40°) at 33.0 kt gusting to 38.9 kt
Significant Wave Height: 14.4 ft
Dominant Wave Period: 8 sec
Atmospheric Pressure: 30.11 in and falling
Member Since: September 22, 2005 Posts: 18 Comments: 2135
527. SavannahStorm 7:50 PM GMT on May 19, 2009    
Gusting to 43 knots at the Navy R2 tower.

Up to 50 knots a few hours ago.
Member Since: September 22, 2005 Posts: 18 Comments: 2135
529. WPBHurricane05 7:51 PM GMT on May 19, 2009    
Like usual I get nothing. Only 1.40 inches of rain in West Palm Beach.
Member Since: July 31, 2006 Posts: 56 Comments: 7929
530. SavannahStorm 7:52 PM GMT on May 19, 2009    
Make that the R6 tower.



Member Since: September 22, 2005 Posts: 18 Comments: 2135
531. TheCaneWhisperer 7:54 PM GMT on May 19, 2009    
533. TheCaneWhisperer 7:58 PM GMT on May 19, 2009    
Also in that image you can see EX90L about to make landfall on Andros Island heading WNW, lol. Still kicking a rather healthy circulation if you ask me.
534. stillwaiting 7:58 PM GMT on May 19, 2009    
pressure down to 1008.4mb here in sarasota....she's starting to blossom and tighten up a bit now!!!,look at all the rain headed for SWFL!!!!!expect rain amounts between 3-4 inches over the next 24hrs....oh yea everythings drifting west now as the ridge is building further...
Member Since: October 5, 2007 Posts: 20 Comments: 4970
535. Ossqss 8:00 PM GMT on May 19, 2009    
Quoting stillwaiting:
pressure down to 1008.4mb here in sarasota....she's starting to blossom and tighten up a bit now!!!,look at all the rain headed for SWFL!!!!!expect rain amounts between 3-4 inches over the next 24hrs....oh yea everythings drifting west now as the ridge is building further...


How are the Gulf SST's doing ? I am showing 1006 in Bradenton, this thing must be broken.
Member Since: June 12, 2005 Posts: 6 Comments: 8154
536. cchsweatherman 8:01 PM GMT on May 19, 2009    
Quoting TheCaneWhisperer:
Also in that image you can see EX90L about to make landfall on Andros Island heading WNW, lol. Still kicking a rather healthy circulation if you ask me.


Seems like someone just read my mind! LOL

After going to the link you provided and taking a real good look, I don't see any surface low over the Keys. But I did see a rather vigorous surface low from ex-Invest 90L. Also seems like its underneath that convective burst over the Bahamas as well. Don't know, but they may have deactivated a bit soon.
Member Since: April 14, 2007 Posts: 8 Comments: 4926
537. KatyTexasNewbee 8:01 PM GMT on May 19, 2009    
Earliest tropical storm formed: Subtropical Storm One, January 18, 1978, through January 23, 1978, 45 mph. Excluding this subtropical storm, the Groundhog Day Tropical Storm of 1952 February 2, 1952-February 3, 1952 with 50 mph winds was the earliest formed in a calendar year.
Earliest Hurricane formed in a calendar year: March 6, 1908 Hurricane
Strongest February tropical storm: Groundhog Day Storm of 1952 February 2, 1952-February 3, 1952, 50 mph
Strongest March hurricane: March 6, 1908 Hurricane, category 2 storm.
Strongest April tropical storm: Ana 2003 (the only April storm in fact), April 20-April 24, 60 mph winds, 994 mb
Strongest May hurricane:Hurricane Able 1951 (Category 3), 1908 Hurricane (Category ?), Alma 1970 (Cat 1), Tropical Storm 1933, May 15, 1887 (70mph) & May 17, 1887 (60 mph), earliest two storms active at once. Tropical Storm One, May 22, 1948 (50mph). Tropical Storm One, May 19, 1940.
538. WPBHurricane05 8:03 PM GMT on May 19, 2009    
Good Lord! The local news has crews out covering this system. Acting like it hasn't rained in months...oh wait.
Member Since: July 31, 2006 Posts: 56 Comments: 7929
539. Vero1 8:03 PM GMT on May 19, 2009    
Member Since: July 21, 2008 Posts: 4 Comments: 2233
540. zoomiami 8:03 PM GMT on May 19, 2009    
I don't know where everyone else in Miami has been, but I've been out all day get rained on. US1 in South Miami had an entire lane flooded, its pouring in Homestead, and getting ready to do it again here in Kendall.

Not that I'm complaining - but it certainly has been raining.
Member Since: August 13, 2007 Posts: 10 Comments: 4065
541. Buhdog 8:04 PM GMT on May 19, 2009    
Hey guys...old school member for over 4 years back with my first 2009 post...great to see you all!

Dark clouds on their way to SWFL...Ft myers. Pressure dropping...figures that it would not rain for 6 months and then it rains during the nba playoffs when I am off work and my direct tv will be fuzzy....nice.
Member Since: July 30, 2005 Posts: 1 Comments: 950
542. IKE 8:05 PM GMT on May 19, 2009    
Quoting IpswichWeatherCenter:


Lol... I hope that isn't real!


It isn't and he really shouldn't be doing that.

Oh well.
Member Since: June 9, 2005 Posts: 23 Comments: 37047
543. stillwaiting 8:05 PM GMT on May 19, 2009    
SWFL:here comes the rain,here comes the rain(jumping up and down)...seriously we could have some flooding concerns overnight as our flow will soon be out of the SE and will open a floodgate of tropical moisture influx into our ULL and associated surface low both located along fl's west coast........and everything's retro-grading west!!!!
Member Since: October 5, 2007 Posts: 20 Comments: 4970
544. WPBHurricane05 8:05 PM GMT on May 19, 2009    
Quoting zoomiami:
I don't know where everyone else in Miami has been, but I've been out all day get rained on. US1 in South Miami had an entire lane flooded, its pouring in Homestead, and getting ready to do it again here in Kendall.

Not that I'm complaining - but it certainly has been raining.


Try to send some of that to West Palm. Haven't seen a drop all day.
Member Since: July 31, 2006 Posts: 56 Comments: 7929
545. hurricanehanna 8:06 PM GMT on May 19, 2009    
Quoting WPBHurricane05:
Good Lord! The local news has crews out covering this system. Acting like it hasn't rained in months...oh wait.


Duck if you see Cantori!
Member Since: September 5, 2007 Posts: 0 Comments: 3214
547. captainhunter 8:07 PM GMT on May 19, 2009    
542. IKE

I was hoping we had seen the last of that. Too much last season.
Member Since: August 12, 2007 Posts: 0 Comments: 428
548. Drakoen 8:07 PM GMT on May 19, 2009    
the surface low looks like its down by extreme Southwest Florida.
Member Since: October 28, 2006 Posts: 57 Comments: 29010
549. stillwaiting 8:08 PM GMT on May 19, 2009    
I think a STS in the next 48hrs is a real possiblity...somewhere in the eastern/central GOM....maybe even making a full transition to a TS......
Member Since: October 5, 2007 Posts: 20 Comments: 4970
550. Ossqss 8:08 PM GMT on May 19, 2009    
Quoting StormW:
From yesterday



Thanks Storm, I could not find anything from today. I thought they were updated more frequently :)
Member Since: June 12, 2005 Posts: 6 Comments: 8154
551. WPBHurricane05 8:08 PM GMT on May 19, 2009    
Quoting hurricanehanna:


Duck if you see Cantori!


LOL

Where is Patrap with one of his Cantore pictures?
Member Since: July 31, 2006 Posts: 56 Comments: 7929

Viewing: 501 - 551

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26Blog Index

New Comment
Community Standards Policy Comments will take a few seconds to appear.
Post Your Comments
Please sign in to post comments.
Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.
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.

Community Activity