Alert archive / Alabama / Flash Flood Warnings in 2023

Flash Flood Warning 25, NWS Huntsville, AL

August 15, 2023Limestone County, Madison County, Alabama; Franklin County, Lincoln County, Tennessee

NWS Huntsville, AL issued this flash flood warning at Aug 15, 2023, 12:46 AM CDT for Limestone County, Madison County, Alabama; Franklin County, Lincoln County, Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 15, 2023, 12:46 AM CDT (05:46 UTC)
Expired
Aug 15, 2023, 3:29 AM CDT
In force
3 hr
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Flood severity
None

Counties Limestone County, AL, Madison County, AL, Franklin County, TN, Lincoln County, TN

The radar

The Northeast Alabama radar (KHTX), 43 km from the middle of the area, began a volume at 05:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.8 hours before the alert went out and 129 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2023-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 636 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2023-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
636 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1097 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Huntsville, AL wrote its last area forecast discussion before this flash flood warning went out at Aug 15, 12:15 AM CDT, 31 minutes earlier.

Area forecast discussion, Aug 15, 12:15 AM CDT, 31 minutes before
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In the hours before

Special weather statement, Aug 14, 11:06 PM CDT, 1 hour 40 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1106 PM CDT Mon Aug 14 2023

TNZ076-096-097-150430-
Franklin TN-Moore TN-Lincoln TN-
1106 PM CDT Mon Aug 14 2023

...Strong thunderstorms will impact portions of Moore, Lincoln and
northwestern Franklin Counties through 1130 PM CDT...

At 1106 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles north of Petersburg to 10 miles east of
Pulaski. Movement was east at 35 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Fayetteville, Lynchburg, Petersburg, Tims Ford Lake, Howell, Hurdlow,
Mimosa, Smithland, Coldwater and Kelso.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
Middle Tennessee.

&&

LAT...LON 3539 8628 3538 8625 3537 8627 3534 8624
      3533 8620 3536 8615 3505 8642 3507 8683
      3525 8683 3525 8675 3531 8668 3533 8660
      3537 8660 3536 8649 3533 8646 3532 8642
      3535 8641 3536 8633 3541 8629 3541 8626
TIME...MOT...LOC 0406Z 264DEG 40KT 3543 8663 3518 8685

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

26
Special weather statement, Aug 14, 11:15 PM CDT, 1 hour 31 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1115 PM CDT Mon Aug 14 2023

ALZ004-005-150445-
Lawrence AL-Limestone AL-
1115 PM CDT Mon Aug 14 2023

...A strong thunderstorm will impact portions of central Limestone
and northeastern Lawrence Counties through 1145 PM CDT...

At 1115 PM CDT, Doppler radar was tracking a strong thunderstorm near
Rogersville, or 14 miles west of Athens, moving northeast at 35 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Athens, Elkmont, Cartwright, Coxey, Cairo and Ripley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
north central and northwestern Alabama.

&&

LAT...LON 3497 8701 3482 8689 3465 8726 3476 8733
      3477 8732 3475 8729 3476 8727 3478 8728
      3481 8722 3484 8721
TIME...MOT...LOC 0415Z 241DEG 29KT 3475 8721

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

26
Special weather statement, Aug 14, 11:19 PM CDT, 1 hour 27 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1119 PM CDT Mon Aug 14 2023

ALZ006-009-150500-
Madison AL-Jackson AL-
1119 PM CDT Mon Aug 14 2023

...A strong thunderstorm will impact portions of west central Jackson
and central Madison Counties through MIDNIGHT CDT...

At 1119 PM CDT, Doppler radar was tracking a strong thunderstorm over
northwestern Huntsville, moving northeast at 35 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Huntsville, Madison, Moores Mill, Redstone Arsenal, Gurley, Alabama A
And M University, Marshall Space Flight Center, University Of Alabama
In Huntsville, New Market and Maysville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
north central and northeastern Alabama.

&&

LAT...LON 3464 8666 3474 8672 3496 8634 3476 8620
TIME...MOT...LOC 0419Z 242DEG 30KT 3472 8661

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

26
Special weather statement, Aug 14, 11:53 PM CDT, 53 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1153 PM CDT Mon Aug 14 2023

ALZ001-002-004-005-150515-
Lawrence AL-Lauderdale AL-Limestone AL-Colbert AL-
1153 PM CDT Mon Aug 14 2023

...Strong thunderstorms will impact portions of west central
Limestone, southeastern Lauderdale, southeastern Colbert and
northern Lawrence Counties through 1215 AM CDT...

At 1152 PM CDT, Doppler radar was tracking strong thunderstorms over
Leighton, or 9 miles southeast of Muscle Shoals, moving northeast at
35 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Rogersville, Town Creek, Leighton, Courtland, Tanner, North
Courtland, Hillsboro, Coxey, Oliver and La Grange.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
north central and northwestern Alabama.

&&

LAT...LON 3487 8719 3470 8694 3466 8707 3468 8710
      3465 8711 3451 8752 3453 8753 3457 8753
      3457 8756 3469 8766
TIME...MOT...LOC 0452Z 241DEG 32KT 3467 8750

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

26
Special weather statement, Aug 15, 12:09 AM CDT, 37 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1209 AM CDT Tue Aug 15 2023

ALZ003-150545-
Franklin AL-
1209 AM CDT Tue Aug 15 2023

...A strong thunderstorm will impact portions of western Franklin
County through 1245 AM CDT...

At 1209 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles southeast of Red Bay, moving east at 30 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Russellville, Belgreen, Vina, Hodges, Atwood, Isbell, Duketon,
Rockwood and Little Bear Creek Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
northwestern Alabama.

&&

LAT...LON 3443 8813 3452 8775 3431 8774 3431 8805
      3432 8813 3432 8814
TIME...MOT...LOC 0509Z 262DEG 27KT 3436 8804

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

26
Special weather statement, Aug 15, 12:28 AM CDT, 18 minutes before
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The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 14, 7:39 PM CDTSpecial Weather StatementHUNFranklin51 min
Aug 14, 7:48 PM CDTSpecial Weather StatementHUNLawrence27 min
Aug 14, 7:59 PM CDTSevere Thunderstorm WarningHUNJackson, Madison46 min
Aug 14, 8:06 PM CDTSevere Thunderstorm WarningHUNLawrence, Limestone, Morgan24 min
Aug 14, 8:25 PM CDTSpecial Weather StatementHUNMadison35 min
Aug 14, 8:28 PM CDTSevere Thunderstorm WarningHUNLimestone, Madison, Morgan15 min
Aug 14, 8:33 PM CDTSpecial Weather StatementHUNJackson42 min
Aug 14, 8:39 PM CDTSpecial Weather StatementHUNLawrence36 min
Aug 14, 8:45 PM CDTSpecial Weather StatementHUNMorgan30 min
Aug 14, 8:52 PM CDTSpecial Weather StatementHUNJackson23 min
Aug 14, 9:13 PM CDTSpecial Weather StatementHUNMorgan47 min
Aug 14, 9:14 PM CDTSpecial Weather StatementHUNJackson46 min
Aug 14, 9:18 PM CDTSpecial Weather StatementHUNFranklin42 min
Aug 14, 9:29 PM CDTSpecial Weather StatementHUNJackson46 min
Aug 14, 9:56 PM CDTSevere Thunderstorm WarningHUNDeKalb, Jackson34 min
Aug 14, 10:16 PM CDTSpecial Weather StatementHUNMadison29 min
Aug 14, 10:21 PM CDTSpecial Weather StatementHUNMadison24 min
Aug 14, 10:29 PM CDTSpecial Weather StatementHUNMorgan46 min
Aug 14, 10:35 PM CDTAreal Flood WarningHUNLawrence, Limestone, Morgan3 hr
Aug 14, 10:41 PM CDTSpecial Weather StatementHUNLawrence49 min
Aug 14, 10:52 PM CDTSpecial Weather StatementHUNFranklin53 min
Aug 14, 10:57 PM CDTSpecial Weather StatementHUNLimestone33 min
Aug 14, 11:15 PM CDTSpecial Weather StatementHUNLimestone30 min
Aug 14, 11:19 PM CDTSpecial Weather StatementHUNMadison41 min
Aug 14, 11:33 PM CDTSevere Thunderstorm WarningHUNJackson, Limestone, Madison42 min
Aug 14, 11:43 PM CDTFlash Flood WarningHUNJackson, Madison4 hr
Aug 14, 11:45 PM CDTSevere Thunderstorm WarningHUNLimestone, Madison30 min
Aug 14, 11:53 PM CDTSpecial Weather StatementHUNLawrence22 min
Aug 15, 12:09 AM CDTSpecial Weather StatementHUNFranklin36 min
Aug 15, 12:12 AM CDTSevere Thunderstorm WarningHUNJackson, Madison48 min
Aug 15, 1:09 AM CDTSpecial Weather StatementHUNMadison36 min
Aug 15, 3:09 AM CDTSpecial Weather StatementHUNFranklin36 min
Aug 15, 3:39 AM CDTSpecial Weather StatementHUNFranklin36 min
Aug 14, 7:27 PM CDTSpecial Weather StatementHUNMoore33 min
Aug 14, 7:41 PM CDTSpecial Weather StatementHUNLincoln34 min
Aug 14, 7:50 PM CDTSpecial Weather StatementHUNFranklin10 min
Aug 14, 9:46 PM CDTSpecial Weather StatementHUNLincoln29 min
Aug 14, 11:06 PM CDTSpecial Weather StatementHUNLincoln, Moore24 min

Nearby

Flash Flood Warnings in Alabama, 2023Flash Flood Warnings in Tennessee, 2023Every flash flood warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.