Thursday, May 9, 2024

Flash Flood Warnings



Be very careful driving today, and if you don't have to, I wouldn't, through these affected areas. Just glad the severe storms are finally out of North Alabama and Tennessee. But this flooding is very dangerous in a different way. We have a nicer weekend on the way. After tomorrow morning, confident in better weather. This has been a rough ride for everyone. 

Since North Alabama has been cleared from the Tornado Watch, I am discontinuing coverage. No severe weather is expected the rest of the day. Unless things can redevelop this evening or tonight. The probability of that seems low, but since this system has thrown us so many curves, let's consider that possibility even if it is a low one, and just be prepared in case some of us get more storms tonight, Thursday night. It is a low-end conditional threat, but the threat is there. We have much nicer weather tomorrow morning through the weekend, clear skies and cooling down into the 70's for at least tomorrow and Saturday, probably closer to 80 Sunday. 

9 AM - Folks in counties on the fringe of North Alabama like Walker, Blount, and Etowah may want to watch the weather for about the next hour until the squall line fully passes through. I doubt any issues there, but if you want to play it safe, tune to a good source from Central Alabama. I am done for this long night. And I really don't know what counties most my readers are from. I did not even plan on doing this much coverage. It sort of started with that tornado that first formed in Wayne County yesterday and nearly hit some of my kinfolks and turned out to be a significant twister. And I just rode with it from there. But I am going to recharge. Wishing you all safety the rest of today, flood issues and whatnot, and if anybody is reading this who got damage or just a bad scare, I wish you more peaceful times soon and rebuilding whatever needs to be. Peace out. 

9:26 AM - Hey peeps, since sleep has not come as swiftly as I thought, and my mind is still turning over this rather strange severe weather event and the close calls some people I know had with it, going to take a look at the chance for any further severe weather this evening or tonight. 




 The Storm Prediction Center has no severe weather outlook for Tennessee at all. So that's great news for my readers up there. In North Alabama, our risk for damaging thunderstorm winds or large hail is the standard 15%. 

So if we get enough daytime heating and the atmosphere can recover this evening, then we could see some thunderstorms become severe again tonight. And could produce damaging winds or large hail. Nothing points to supersized hail or hurricane force winds, just your usual run of winds more like 60 mph and hail that can be measured in coin sizes. As we all know, this last event, we had it measured in ball sizes more often. 

And the tornado threat is minimal. An isolated tornado or two could happen somewhere in the region. But the probability is only marked as 2% around here. In fact let's zoom in on that. 


So for Cullman, Winston, Blount, Marshall Counties, places like that, there is a 2% tornado risk, the lowest they can issue. It's more like 5% for Walker County and down into Birmingham area. Much of North Alabama is not included in any tornado risk at all. 


Even the basic risk for damaging thunderstorm winds or severe hail only extends about as far North as Decatur. Then we have marginal probabilities for places like Huntsville. 

And these are only basic guidelines. But maybe that can set some people's minds at ease or at least give them a realistic idea of what to expect if storms do regenerate this evening/tonight. And we're not even sure if that will happen, if any storms will be able to get organized enough to become severe. If you see the sun out a lot today, then it is a lot more likely to happen. We stay mostly cloudy, much lower chance, to keep it really simple. After whatever happens tonight, we can kiss this system goodbye. It has terrorized many other places than here. And it's about time it was buried at sea. 

And even if it sounds sappy or whatever, major thanks to the NWS offices, emergency workers, other meteorologists, spotters, and the SPC people for all doing the best job they could with this very unusual event. I am especially impressed that the Huntsville office did such a bang-up job for us despite having to shelter during the event and then having their closest radar go down. Over and out. 

Flash Flood Warning

ALC043-049-071-083-089-095-103-091700-

/O.NEW.KHUN.FF.W.0007.240509T1353Z-240509T1700Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/


BULLETIN - EAS ACTIVATION REQUESTED

Flash Flood Warning

National Weather Service Huntsville AL

853 AM CDT Thu May 9 2024


The National Weather Service in Huntsville has issued a


* Flash Flood Warning for...

  Cullman County in north central Alabama...

  Southeastern Limestone County in north central Alabama...

  Southern Madison County in north central Alabama...

  Morgan County in north central Alabama...

  DeKalb County in northeastern Alabama...

  Western Jackson County in northeastern Alabama...

  Marshall County in northeastern Alabama...


* Until noon CDT.


* At 853 AM CDT, Doppler radar indicated thunderstorms producing

  heavy rain across northern Alabama. Between 2 and 3 inches of rain

  have fallen. Additional rainfall amounts of 1 to 1.5 inches are

  possible in the warned area. Flash flooding is ongoing and

  mudslides are a threat near hilly terrain. There are numerous

  reports of water rushing over roadways and at least one mudslide

  in Marshall county on AL 227 mile marker 36 with one foot of mud

  on all but one lane.


  HAZARD...Flash flooding caused by thunderstorms.


  SOURCE...Radar and emergency manager reports.


  IMPACT...Flash flooding of small creeks and streams, urban

           areas, highways, streets and underpasses as well as

           other poor drainage and low-lying areas.


* Some locations that will experience flash flooding include...

  Southern Huntsville, Decatur, Madison, Athens, Albertville,

  Cullman, Scottsboro, Hartselle, Fort Payne, Boaz, Guntersville,

  Arab, Rainsville, Redstone Arsenal, Hanceville, Priceville, Good

  Hope, Trinity, Crossville and Sylvania.


PRECAUTIONARY/PREPAREDNESS ACTIONS...


Turn around, don`t drown when encountering flooded roads. Most flood

deaths occur in vehicles.


In hilly terrain there are hundreds of low water crossings which are

potentially dangerous in heavy rain. Do not attempt to cross flooded

roads. Find an alternate route. Mudslides are also a hazard.


Please report observed flooding to local emergency services or law

enforcement and request they pass this information to the National

Weather Service when you can do so safely.


&&


LAT...LON 3487 8677 3470 8679 3469 8637 3488 8634

      3489 8611 3459 8614 3453 8551 3424 8584

      3420 8584 3418 8619 3410 8630 3426 8644

      3425 8651 3412 8660 3409 8669 3397 8677

      3388 8692 3387 8692 3390 8710 3488 8712


FLASH FLOOD...RADAR INDICATED


$$


30

Flash Flood Warning

ALC049-071-091530-

/O.NEW.KHUN.FF.W.0006.240509T1334Z-240509T1530Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/


BULLETIN - EAS ACTIVATION REQUESTED

Flash Flood Warning

National Weather Service Huntsville AL

834 AM CDT Thu May 9 2024


The National Weather Service in Huntsville has issued a


* Flash Flood Warning for...

  Northeastern DeKalb County in northeastern Alabama...

  Central Jackson County in northeastern Alabama...


* Until 1030 AM CDT.


* At 834 AM CDT, emergency management reported thunderstorms

  producing heavy rain across central Jackson and northern DeKalb

  counties. Water was moving over the road in Rosalie, AL. Between 2

  and 3 inches of rain have fallen. Additional rainfall amounts up

  to one inch is possible. Flash flooding is ongoing or expected to

  begin shortly.


  HAZARD...Flash flooding caused by thunderstorms.


  SOURCE...Emergency management reported.


  IMPACT...Flash flooding of small creeks and streams, urban

           areas, highways, streets and underpasses as well as

           other poor drainage and low-lying areas.


* Some locations that will experience flash flooding include...

  Scottsboro, Fort Payne, Henagar, Stevenson, Sylvania, Hollywood,

  Skyline, Section, Ider, Pisgah, Valley Head, Hammondville,

  Mentone, Hytop, Dutton, Rosalie, Martintown, Fabius, Fackler and

  Higdon.


PRECAUTIONARY/PREPAREDNESS ACTIONS...


Turn around, don`t drown when encountering flooded roads. Most flood

deaths occur in vehicles.


&&


LAT...LON 3487 8558 3453 8552 3452 8551 3452 8552

      3451 8553 3459 8614 3489 8612


FLASH FLOOD...OBSERVED


$$


30

Flash Flood Warning

ALC033-077-091500-

/O.NEW.KHUN.FF.W.0005.240509T1200Z-240509T1500Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/


BULLETIN - EAS ACTIVATION REQUESTED

Flash Flood Warning

National Weather Service Huntsville AL

700 AM CDT Thu May 9 2024


The National Weather Service in Huntsville has issued a


* Flash Flood Warning for...

  East Central Colbert County in northwestern Alabama...

  South Central Lauderdale County in northwestern Alabama...


* Until 1000 AM CDT.


* At 700 AM CDT, Doppler radar indicated thunderstorms producing

  heavy rain across the warned area. Between 1 and 3 inches of rain

  have fallen. The expected rainfall rate is 0.25 to 0.5 inches in 1

  hour. Additional rainfall amounts up to 1 inch are possible in the

  warned area. Flash flooding is ongoing or expected to begin

  shortly.


  HAZARD...Flash flooding caused by thunderstorms.


  SOURCE...Radar.


  IMPACT...Flash flooding of small creeks and streams, urban

           areas, highways, streets and underpasses as well as

           other poor drainage and low-lying areas.


* Some locations that will experience flash flooding include...

  Florence, Muscle Shoals, Sheffield, Tuscumbia, Killen, St.

  Florian, Underwood-Petersville, Northwest Alabama Regional Airport

  and Ford City.


PRECAUTIONARY/PREPAREDNESS ACTIONS...


Turn around, don`t drown when encountering flooded roads. Most flood

deaths occur in vehicles.


&&


LAT...LON 3488 8750 3471 8750 3471 8777 3487 8777


FLASH FLOOD...RADAR INDICATED

EXPECTED RAINFALL RATE...0.25-0.5 INCHES IN 1 HOUR


$$


70/DD

Flash Flood Warning

ALC089-091415-

/O.NEW.KHUN.FF.W.0004.240509T1106Z-240509T1415Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/


BULLETIN - EAS ACTIVATION REQUESTED

Flash Flood Warning

National Weather Service Huntsville AL

606 AM CDT Thu May 9 2024


The National Weather Service in Huntsville has issued a


* Flash Flood Warning for...

  Central Madison County in north central Alabama...


* Until 915 AM CDT.


* At 606 AM CDT, An off duty NWS employee reported thunderstorms

  producing heavy rain across the warned area. Between 2 and 4

  inches of rain have fallen. The expected rainfall rate is 0.25 to

  0.5 inches in 1 hour. Additional rainfall amounts up to 1 inch are

  possible in the warned area. Flash flooding is ongoing or expected

  to begin shortly.


  HAZARD...Flash flooding caused by thunderstorms.


  SOURCE...Off duty NWS employee reported.


  IMPACT...Flash flooding of small creeks and streams, urban

           areas, highways, streets and underpasses as well as

           other poor drainage and low-lying areas.


* Some locations that will experience flash flooding include...

  Huntsville, Madison, Moores Mill, Meridianville, Redstone Arsenal,

  Gurley, Alabama A And M University, University Of Alabama In

  Huntsville, Harvest, Ryland, Brownsboro and Maysville.


PRECAUTIONARY/PREPAREDNESS ACTIONS...


Turn around, don`t drown when encountering flooded roads. Most flood

deaths occur in vehicles.


&&


LAT...LON 3474 8636 3471 8636 3469 8636 3470 8678

      3487 8678 3487 8635 3474 8635


FLASH FLOOD...OBSERVED

EXPECTED RAINFALL RATE...0.25-0.5 INCHES IN 1 HOUR


$$


70/DD

Flash Flood Warning

TNC007-065-115-121-143-153-091515-

/O.EXT.KMRX.FF.W.0005.000000T0000Z-240509T1515Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/


BULLETIN - EAS ACTIVATION REQUESTED

Flash Flood Warning

National Weather Service Morristown TN

856 AM EDT Thu May 9 2024


The National Weather Service in Morristown has extended the


* Flash Flood Warning for...

  Bledsoe County in east Tennessee...

  Hamilton County in east Tennessee...

  Marion County in east Tennessee...

  Meigs County in east Tennessee...

  Rhea County in east Tennessee...

  Sequatchie County in east Tennessee...


* Until 1115 AM EDT /1015 AM CDT/.


* At 856 AM EDT /756 AM CDT/, local law enforcement reported flash

  flooding continues across the warned area. Numerous roads remain

  closed, and some creeks and streams are over their banks.


  HAZARD...Flash flooding caused by heavy rain.


  SOURCE...Law enforcement reported.


  IMPACT...Flash flooding of small creeks and streams, urban

           areas, highways, streets and underpasses as well as

           other poor drainage and low-lying areas.


PRECAUTIONARY/PREPAREDNESS ACTIONS...


Be aware of your surroundings and do not drive on flooded roads.


Stay away or be swept away. River banks and culverts can become

unstable and unsafe.


&&


LAT...LON 3541 8549 3553 8561 3557 8542 3575 8526

      3576 8527 3576 8492 3583 8479 3575 8475

      3571 8463 3565 8462 3520 8501 3513 8503

      3501 8496 3499 8498 3499 8586 3522 8587

      3522 8574 3524 8569 3529 8571 3536 8551


FLASH FLOOD...OBSERVED


$$


DGS

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