Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 4, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Mar 17, 2021, 9:19 PM CDT for 4 counties in Alabama; Franklin County, Lincoln County, Tennessee. It was in force for 3 hr. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 17, 2021, 9:19 PM CDT (02:19 UTC)
- Expired
- Mar 18, 2021, 12:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jackson County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Franklin County, TN, Lincoln County, TN
The radar
The Northeast Alabama radar (KHTX), 44 km from the middle of the area, began a volume at 02:22 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 17, 9:22 PM CDT | FLOOD | 7 E Huntsville, AL | DUG HILL ROAD AND ROBINSON DRIVE INTERSECTION UNDER WATER. |
| Mar 17, 9:36 PM CDT | FLASH FLOOD | 2 Wnw Owens Crossroads, AL | HIGH WATER RESCUE UNDERWAY WITH AN SUV IN FOUR FEET OF WATER NEAR A CREEK ON SOUTH GREEN MOUNTAIN ROAD AND OLD BIG COVE ROAD. BOTH OCCUPANTS WERE SUCCESSFULLY RESCUED. |
| Mar 17, 10:00 PM CDT | FLASH FLOOD | 5 Nnw Owens Crossroads, AL | SIGNIFICANT FLOODING IN COVE SUBDIVISION AT JACKS CREEK LANE AND PALE DAWN. WATER COVERS MAILBOXES AND THERE WERE WAVES IN THE RUSHING WATER DOWN THE STREET. REPORT RECEIVED VIA SOCIAL MEDIA. |
| Mar 17, 10:01 PM CDT | FLASH FLOOD | 4 Sw Owens Crossroads, AL | HOBBS ISLAND AND HYATT INTERSECTION FLOODED WITH FURNITURE FLOATING IN THE ROADWAY. |
| Mar 17, 11:11 PM CDT | FLASH FLOOD | 1 W Gurley, AL | CAR SUBMERGED AT ROCK CUT ROAD AT HWY 72. WATER WAS FLOWING OVER THE ROADWAY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 2.3 hours before the alert went out and 158 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.
- Mixed-layer CAPE
- 51 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 623 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 249 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
036
WGUS54 KHUN 180219
FFWHUN
ALC071-089-095-103-TNC051-103-180530-
/O.NEW.KHUN.FF.W.0004.210318T0219Z-210318T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Huntsville AL
919 PM CDT Wed Mar 17 2021
The National Weather Service in Huntsville has issued a
* Flash Flood Warning for...
Central Madison County in north central Alabama...
East Central Morgan County in north central Alabama...
Northwestern Jackson County in northeastern Alabama...
Northern Marshall County in northeastern Alabama...
Southwestern Franklin TN County in middle Tennessee...
Southeastern Lincoln County in middle Tennessee...
* Until 1230 AM CDT.
* At 919 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3 and 4 inches of rain
have fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Southern Huntsville, Moores Mill, Redstone Arsenal, Owens Cross
Roads, Huntland, Skyline, Gurley, New Market, Pleasant Groves,
Hytop, Paint Rock, Maysville, Garth, Brownsboro, Hollytree,
Ryland, Trenton, Princeton, Hampton Cove and Larkin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3459 8670 3472 8660 3490 8642 3499 8634
3510 8623 3502 8607 3484 8611 3447 8647
3451 8654 3456 8656 3458 8659 3454 8664
3454 8674
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 4 HOURS
$$
KTW1 follow-up statement
768
WGUS74 KHUN 180528
FFSHUN
Flash Flood Statement
National Weather Service Huntsville AL
1228 AM CDT Thu Mar 18 2021
ALC071-089-095-103-TNC051-103-180538-
/O.EXP.KHUN.FF.W.0004.000000T0000Z-210318T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jackson AL-Madison AL-Marshall AL-Morgan AL-Franklin TN TN-Lincoln
TN-
1228 AM CDT Thu Mar 18 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 1230 AM CDT EARLY THIS MORNING
FOR EAST CENTRAL MORGAN COUNTY IN NORTH CENTRAL ALABAMA,
NORTHWESTERN JACKSON AND NORTHERN MARSHALL COUNTIES IN NORTHEASTERN
ALABAMA AND SOUTHWESTERN FRANKLIN TN AND SOUTHEASTERN LINCOLN
COUNTIES IN MIDDLE TENNESSEE...
The heavy rain has ended and flash flooding has transitioned to
areal flooding.
LAT...LON 3459 8670 3472 8660 3490 8642 3499 8634
3510 8623 3502 8607 3484 8611 3447 8647
3451 8654 3456 8656 3458 8659 3454 8664
3454 8674
$$
KTWThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 7:40 PM CDT | Areal Flood Warning | HUN | Colbert, Lauderdale | 6 hr |
| Mar 17, 7:54 PM CDT | Special Weather Statement | HUN | Colbert, Lauderdale | 36 min |
| Mar 17, 8:16 PM CDT | Areal Flood Warning | HUN | DeKalb, Jackson, Madison, Marshall, Morgan | 6 hr |
| Mar 17, 8:17 PM CDT | Special Weather Statement | HUN | Colbert, Franklin | 43 min |
| Mar 17, 8:26 PM CDT | Special Weather Statement | HUN | Lauderdale | 34 min |
| Mar 17, 8:47 PM CDT | Areal Flood Warning | HUN | Madison | 11 hr |
| Mar 17, 8:50 PM CDT | Special Weather Statement | HUN | Colbert, Lauderdale, Lawrence | 25 min |
| Mar 17, 9:06 PM CDT | River Flood Warning | HUN | Lawrence | 24 hr |
| Mar 17, 9:07 PM CDT | Flash Flood Warning | HUN | Colbert, Lauderdale | 3 hr |
| Mar 17, 9:14 PM CDT | Special Weather Statement | HUN | Cullman | 31 min |
| Mar 17, 9:34 PM CDT | Areal Flood Warning | HUN | DeKalb | 6 hr |
| Mar 17, 9:45 PM CDT | Special Weather Statement | HUN | Marshall, Morgan | 30 min |
| Mar 17, 10:09 PM CDT | Areal Flood Warning | HUN | Cullman, Madison, Morgan | 6 hr |
| Mar 17, 10:13 PM CDT | Special Weather Statement | HUN | DeKalb, Jackson | 47 min |
| Mar 17, 10:44 PM CDT | Tornado Warning | HUN | DeKalb | 13 min |
| Mar 17, 11:03 PM CDT | Special Weather Statement | HUN | DeKalb | 27 min |
| Mar 17, 11:10 PM CDT | Flash Flood Warning | HUN | Jackson, Marshall | 4 hr |
| Mar 18, 12:03 AM CDT | Areal Flood Warning | HUN | Marshall | 117 min |
| Mar 18, 1:30 AM CDT | Areal Flood Warning | HUN | Cullman, DeKalb, Jackson, Madison, Marshall, Morgan | 8 hr |
| Mar 18, 8:35 AM CDT | Areal Flood Warning | HUN | Madison | 2 hr |
| Mar 18, 10:15 AM CDT | River Flood Warning | HUN | Jackson, Madison, Marshall | 67 hr |
| Mar 18, 10:45 AM CDT | River Flood Warning | HUN | Colbert, Lauderdale | 4 days |
Nearby
Flash Flood Warnings in Alabama, 2021Flash Flood Warnings in Tennessee, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.