Dr. Jeff Masters' WunderBlog

Debby lingers in the Gulf, bringing heavy rain, flooding to Florida
Posted by: Angela Fritz, 21:26 GMT le 25 juin 2012 +37
Debby remains a raggedy-looking tropical storm with maximum sustained winds of 45 mph. The hurricane hunter mission that ended around 1pm ET found a minimum central pressure of 995 mb and much weaker winds that it had found on previous missions. Despite Debby's less-than-organized appearance, the storm is still managing to dump buckets on Florida, and in particular today, the panhandle. A burst of thunderstorm activity has exploded on the northern side of Debby, and Tallahassee, Florida and it's southern neighbors are getting the worst of the storm's rain this afternoon as it rotates in place. Weather stations near Tallahassee have recorded anywhere from 2 to 9 inches of rain so far today. The strongest wind speeds reported from buoys are around 30 mph this afternoon. The storm's moisture is still confined to the north and east of the center, as a region of dry air continues to wrap in from the south and west. Visible satellite imagery illustrates just how dry Debby is on the southwest, as well as the strong thunderstorm activity that is expected to continue over Florida for the next couple of days. Debby has begun to create a bit of storm surge in the Apalachee Bay area, with reports from St. Marks, Florida that the storm surge has reached the town, though high tide is not for another 2 hours.


Figure 1. Monday afternoon visible satellite imagery of Tropical Storm Debby.


Figure 2. 5-day forecast rainfall from the Hydrometeorological Prediction Center. Rainfall in excess of 15 inches is expected in northern Florida as Debby makes its slow way across the state and into the Atlantic.

Forecast for Debby
Debby continues to drift to the northeast this afternoon, a track that will continue, slowly, over the next couple of days, before it finally crosses Florida, which will likely happen Wednesday and Thursday of this week. The National Hurricane Center's 5pm forecast track is similar to the tracks from earlier today, though the timing has sped up a bit, with landfall occurring Wednesday afternoon. All of the models now agree that Debby will continue moving northeast and gradually turn to the east as it crosses over Florida into the Atlantic. In terms of intensity, the Hurricane Center is predicting that the storm will remain a storm through Wednesday, after which it will likely diminish to tropical depression status. Given the current state of the storm and the dry air that continues to wrap in, it's possible this could happen earlier than Wednesday. Interestingly, the GFDL is suggesting Debby could gain some strength as it crosses Florida, and the ECMWF's earlier run actually thinks Debby will rapidly intensify when it reaches the yet untapped warm waters of the Gulf Stream in the Atlantic and tracks northeast. It's worth nothing that the ECMWF is the only model suggesting this intensity outcome, though all the models have a similar track. In any case, Debby will remain a rainmaker for the rest of the week, and some storm surge is possible, especially in the Big Bend. The SLOSH model, which predicts storm surge heights, suggests this area could see up to a 6 foot storm surge. The coastal flooding will be the worst in the Apalachee Bay region, where high tide occurs from around 7am to 9am EDT.

Angela
One of Debbie's tornados (whgator3)
Tornado crossing Lk. Winterset in Winter Haven, Fl 6/24 8pm
One of Debbie's tornados
Flooding On Anna Maria (amapp)
This is my sister before the flooding got bad. She's sitting on top of a fire hydrant that's rapidly being swallowed up by the water!
Flooding On Anna Maria
TS Debby Flooding (Rick727)
A series of pictures of flooding in Pasco County Florida from the outer bands of Tropical Storm Debby. Exact locations in the EXIF
TS Debby Flooding
TS Debby Flooding (Rick727)
A series of pictures of flooding in Pasco County Florida from the outer bands of Tropical Storm Debby. Exact locations in the EXIF
TS Debby Flooding
Categories: Hurricane
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802. Huracaneer 02:09 GMT le 26 juin 2012    
Quoting TropicalAnalystwx13:
I want to work at the National Hurricane Center.


Imagine Debby being your first storm to predict!
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803. mfcmom 02:10 GMT le 26 juin 2012    
Good evening all. A question for us uninformed. Why does it look like it is blowing up and there seems to be more of a circulation. Just curious live in Panama City and we have gone through this fairly smoothly, however, if it blows up we could be in the soup again. Thank you in advance.
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804. KoritheMan 02:10 GMT le 26 juin 2012    

Quoting TropicalAnalystwx13:
I want to work at the National Hurricane Center.
So have you finally settled on specializing in tropical weather? Earlier this year you were saying you didn't know if you wanted to specialize in severe weather, winter weather, or tropical weather.
Member Since: 7 Mars 2007 Posts: 411 Comments: 15475
805. TropicalAnalystwx13 02:11 GMT le 26 juin 2012    
Quoting KoritheMan:

So have you finally settled on specializing in tropical weather? Earlier this year you were saying you didn't know if you wanted to specialize in severe weather, winter weather, or tropical weather.

I want to be part of the Hurricane Specialist Unit. Maybe I'll ask James on facebook how to get there (what classes to take, best college to go to, etc).
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806. HurricanePookie 02:11 GMT le 26 juin 2012    
Quoting KoritheMan:


It's not a "duh" for some people though. Otherwise, they wouldn't use that kind of wording.


Also, not a lot of "higher ground" in Florida to get to.

Tallahassee has some hills as does Ocala, but most of the state is pretty flat.
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807. KoritheMan 02:12 GMT le 26 juin 2012    

Quoting TropicalAnalystwx13:

I want to be part of the Hurricane Specialist Unit. Maybe I'll ask James on facebook how to get there.
I want to do that as well. Maybe we'll be coworkers!
Member Since: 7 Mars 2007 Posts: 411 Comments: 15475
808. Methurricanes 02:12 GMT le 26 juin 2012    
The southern Tallahasse Metro area is getting destoryed, im sure Gov't worker live down there, could that slow response by the state gov. because of lack of personall?
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809. washingaway 02:12 GMT le 26 juin 2012    
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810. Jedkins01 02:12 GMT le 26 juin 2012    
Quoting Huracaneer:


I was also out on Indian Rocks beach, wow! FLWeatherFreak91 said earlier that we are in the main inflow channel to the center and that's why we got these crazy winds. Makes sense?


I guess that combined with the pressure gradient, well either way its crazy. I'm pretty sure winds are stronger in the eastern gulf and Pinellas Coast then the center lol. I think we are getting worse winds around here then Beryl ever muster as a 70 mph tropical storm.
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811. Bluestorm5 02:13 GMT le 26 juin 2012    
Quoting TropicalAnalystwx13:

I want to be part of the Hurricane Specialist Unit. Maybe I'll ask James on facebook how to get there.
Which college are you considering going? I'm considering going to NC State, but UNC-Asheville, UNC-Charlotte, or Plymouth State is still in the race.
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812. AllStar17 02:13 GMT le 26 juin 2012    
(click to enlarge)
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813. lobdelse81 02:13 GMT le 26 juin 2012    
Quoting cyclonekid:
I miss the old crew though. With Alexandra Steele, Paul Goodloe, Steve Lyons, Dave Shwartz, etc.

I agree. I wish they were back. I also miss(from way back) Charlie Welsh, John Hope, Marny Stanier, Bob Stokes, Lisa Spancer, Janetta Jones, and Jill Brown. I wonder where they all are these days?
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814. TropicalAnalystwx13 02:13 GMT le 26 juin 2012    
Quoting Bluestorm5:
Which college are you considering going? I'm considering going to NC State, but UNC-Asheville, UNC-Charlotte, or Plymouth State is still in the race.

NCSU or FSU.
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815. MississippiWx 02:14 GMT le 26 juin 2012    
Lol. Now someone is trolling and acting like Taz. Something new all the time here at WU.
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816. Bluestorm5 02:14 GMT le 26 juin 2012    
Quoting HurricanePookie:


Also, not a lot of "higher ground" in Florida to get to.

Tallahassee has some hills as does Ocala, but most of the state is pretty flat.
highest point in Florida is 345 feet at Britton Hill at the border of Alabama/Florida
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817. RTSplayer 02:14 GMT le 26 juin 2012    
Another frame due south motion, as best I can tell.
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818. Mamasteph 02:15 GMT le 26 juin 2012    
Quoting flbeachgirl:
Eastbound lanes of I-10 near Lake City are closed due to flooding.

Forecasters calling for an inch of rain per hour overnight for Jacksonville area. Black Creek in Clay County is above flood stage and may reach highest levels in recorded history tomorrow. Shelter has been opened for evacuees.
I saw..it's their turn now..we are almost out of the woods here in flagler county at least for tonites bands..they are discontinuing the tornado watch and it should be quiet after these rains move on thru..Post 788 looks almost like an early 4th of July fireworks show,lol
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819. KoritheMan 02:15 GMT le 26 juin 2012    
Quoting mfcmom:
Good evening all. A question for us uninformed. Why does it look like it is blowing up and there seems to be more of a circulation. Just curious live in Panama City and we have gone through this fairly smoothly, however, if it blows up we could be in the soup again. Thank you in advance.
The convection you see is still displaced well northeast of the low-level center. This can be easily seen on both satellite and radar imagery. While the shear could decrease and Debby could strengthen a little, there is little evidence of the former at the moment (the strong convection could cause some enhancement of the wind, but it wouldn't be confined to the center). The models have been too quick in relaxing the shear, and they continue to be.

In other words, I think you, being on the western side of the storm, will receive very little in the way of significant weather.
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820. PackManWx 02:15 GMT le 26 juin 2012    
I graduated from NCSU with a BS in Meteorology

Great program! It has expanded quite a bit since I graduated. (2005)
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822. uncwhurricane85 02:15 GMT le 26 juin 2012    
Quoting Methurricanes:
The southern Tallahasse Metro area is getting destoryed, im sure Gov't worker live down there, could that slow response by the state gov. because of lack of personall?


govt response will lack if there were enough one person delegated to each city in the united states because of stupid paper work, but it helps if the govt first hand gets affected and in this case i think some of them will actually "Get it" this time down in tallahasse
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823. galvestonhurricane 02:16 GMT le 26 juin 2012    
Good evening everyone! Galveston recorded 100 degrees for the first time ever in June today... :/
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824. sunlinepr 02:16 GMT le 26 juin 2012    
So.... Debby could reach Hurricane strenght in the Atl...

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825. KoritheMan 02:17 GMT le 26 juin 2012    
Quoting TropicalAnalystwx13:

NCSU or FSU.


I want to try Florida State as well (in fact, I'm considering applying soon). Now we just seem stalkerish...
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826. galvestonhurricane 02:17 GMT le 26 juin 2012    
Quoting albertomaster:
actually am from mexico for you are information


Como estas amigo?
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827. MississippiWx 02:17 GMT le 26 juin 2012    
821.

Kind of funny that you knew immediately that I was talking about you.
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828. lobdelse81 02:17 GMT le 26 juin 2012    
Quoting cyclonekid:
I miss the old crew though. With Alexandra Steele, Paul Goodloe, Steve Lyons, Dave Shwartz, etc.

I agree. I wish they were back. I also miss(from way back) Charlie Welsh, John Hope, Marny Stanier, Bob Stokes, Lisa Spancer, Janetta Jones, and Jill Brown. I wonder where they all are these days?
Member Since: 9 septembre 2011 Posts: 0 Comments: 265
829. centex 02:17 GMT le 26 juin 2012    
You can see the split here.

Link
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830. TropicalAnalystwx13 02:17 GMT le 26 juin 2012    
Quoting KoritheMan:


I want to try Florida State as well (in fact, I'm considering applying soon). Now we just seem stalkerish...

Can you wait two years? Lol.
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831. TampaFLUSA 02:17 GMT le 26 juin 2012    
Quoting charlottefl:
And wind has increased quite a bit to the south in Bradenton:


I'm really surprised how windy it is and its increasing according to wind observations.
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832. CosmicEvents 02:18 GMT le 26 juin 2012    
Quoting AllBoardedUp:
If a person doesn't have enough sense to seek higher ground when seeing rising water, then they probably can't read a warning statement in the first place. lol
This is a 1 in a century event, approaching a 1 in 500 year occurence if it keeps up for another day, and it could go on longer than that. Maybe not all folks, even highly-schooled, may not realize that the waters can rise to their ceilings potentially in a tropical storm, as it's never happened before to them or going back generations.
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833. mfcmom 02:18 GMT le 26 juin 2012    
Quoting KoritheMan:

The convection you see is still displaced well northeast of the low-level center. This can be easily seen on both satellite and radar imagery. While the shear could decrease and Debby could strengthen a little, there is little evidence of the former at the moment (the strong convection could cause some enhancement of the wind, but it wouldn't be confined to the center). The models have been too quick in relaxing the shear, and they continue to be.

In other words, I think you, being on the western side of the storm, receive very little in the way of significant weather.

Thank you so much. I have a number of adopted kids, some of whom are handicapped and always need to prepare a little more than most.
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834. MississippiWx 02:18 GMT le 26 juin 2012    
Quoting lobdelse81:

I agree. I wish they were back. I also miss(from way back) Charlie Welsh, John Hope, Marny Stanier, Bob Stokes, Lisa Spancer, Janetta Jones, and Jill Brown. I wonder where they all are these days?


Well, John has been dead...a while.
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835. FSUCOOPman 02:18 GMT le 26 juin 2012    
Quoting Methurricanes:
The southern Tallahasse Metro area is getting destoryed, im sure Gov't worker live down there, could that slow response by the state gov. because of lack of personall?


They didn't close state offices, we were all there today...

Getting ready to exercise our Continuity of Operations Plans (COOP)...

My unit has 17 people, and we only had one out due to daycare coverage.
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836. sunlinepr 02:18 GMT le 26 juin 2012    
Quoting Bluestorm5:


I'm right under these thunderstorms moving southeast in North Carolina... it's pretty strong tonight comparing to typical afternoon storms.


Take cover....

Now twisters and flooding are the ones to watch...
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837. Bluestorm5 02:19 GMT le 26 juin 2012    
Quoting TropicalAnalystwx13:

NCSU or FSU.
I've met NWS workers at NC State and they are very friendly :) they even gave me the tour despite the fact it was few days after April 16 outbreak and the fact they were busy finishing up the reports. Trust me, you'll love these people at NC State :)
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838. sunlinepr 02:19 GMT le 26 juin 2012    
..
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839. Tropicsweatherpr 02:19 GMT le 26 juin 2012    
Ready to make second pass.

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840. galvestonhurricane 02:20 GMT le 26 juin 2012    
I am in Richmond, VA on vacation, and the storms that came through here today were crazy! Half the city lost power and trees are down everywhere - I moved only 2 miles in 90 minutes on Interstate 60 after the storms.
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841. winter123 02:20 GMT le 26 juin 2012    
And Debby becomes a naked swirl once more. Maybe this means the torrential rains will end. I'll be back tomorrow night. I'm sure Debby will magically come back from the dead once more tomorrow.
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842. Patrap 02:20 GMT le 26 juin 2012    
Well, some have been yakking for years that it dont take the Large CV Nightmare to bring calamity home.

All it takes is one that lingers.


Those who prepared come June 1 are better off today, than a whole lot who did not.






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844. flbeachgirl 02:21 GMT le 26 juin 2012    
Quoting Mamasteph:
I saw..it's their turn now..we are almost out of the woods here in flagler county at least for tonites bands..they are discontinuing the tornado watch and it should be quite after these rains move on thru..Post 788 looks almost like an early 4th of July fireworks show,lol


I'm in Jax, just west of the ditch (Intercoastal), and it's coming down pretty good and not expected to stop. I work in Clay County, so getting to work will be interesting.
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845. AllBoardedUp 02:21 GMT le 26 juin 2012    
Quoting CosmicEvents:
This is a 1 in a century event, approaching a 1 in 500 year occurence if it keeps up for another day, and it could go on longer than that. Maybe not all folks, even highly-schooled, may not realize that the waters can rise to their ceilings potentially in a tropical storm, as it's never happened before to them or going back generations.
That's true. Hopefully, if it gets to the point of getting as high as a ceiling, then be sure to bring something to cut through the roof.

I feel for you people in Florida, to think there might be several more days of this weather.
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846. KoritheMan 02:21 GMT le 26 juin 2012    
Quoting TropicalAnalystwx13:

Can you wait two years? Lol.


You're what, 15? You so you do wanna stalk me. STALKER!
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847. Methurricanes 02:21 GMT le 26 juin 2012    
Quoting FSUCOOPman:


They didn't close state offices, we were all there today...

Getting ready to exercise our Continuity of Operations Plans (COOP)...

My unit has 17 people, and we only had one out due to daycare coverage.
I was talking about people who live south of town, that can't get to Tallahasse tomorrow Morning, which I assume is a large number, could this adversly effect the Florida State Goverments ablity to cope with the Disaster.
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848. BrickellBreeze 02:21 GMT le 26 juin 2012    
Debby drifting south yet again... The GFS has nailed it all the way...

Debby will move south, then southeast, then east.
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849. hurricanehunter27 02:21 GMT le 26 juin 2012    
Quoting Tropicsweatherpr:
Ready to make second pass.

Good lord its about time.
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850. dewfree 02:22 GMT le 26 juin 2012    
THis blog dies .the long weekend must be over lol
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851. Huracaneer 02:22 GMT le 26 juin 2012    
Quoting centex:
You can see the split here.

Link


Split? Are you saying the southern part is splitting? I hope I got it wrong. Debbie is more than enough.
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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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