Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 6, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Mar 25, 2021, 9:16 AM CDT for Cullman County, Marshall County, Morgan County, Alabama. It was in force for 4 hr. 2 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 25, 2021, 9:16 AM CDT (14:16 UTC)
- Expired
- Mar 25, 2021, 1:15 PM CDT
- In force
- 4 hr
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cullman County, AL, Marshall County, AL, Morgan County, AL
The radar
The Birmingham radar (KBMX), 106 km from the middle of the area, began a volume at 14:19 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 25, 9:50 AM CDT | FLASH FLOOD | 2 W Cullman, AL | WATER FLOWING OVER INTERSTATE 65 AT THE EXIT 308 INTERSECTION. |
| Mar 25, 11:15 AM CDT | FLASH FLOOD | 3 Ssw Baileyton, AL | PART OF A BACKROAD WASHED OUT ALONG COUNTY ROAD 1716 IN CULLMAN COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 2.3 hours before the alert went out and 105 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
- 54 J/kg
- Mixed-layer CIN
- -239 J/kg
- Mixed-layer LCL
- 507 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 613 m²/s²
- 0-3 km storm-relative helicity
- 713 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.6
The text
As transmitted.
546
WGUS54 KHUN 251416
FFWHUN
ALC043-095-103-251715-
/O.NEW.KHUN.FF.W.0006.210325T1416Z-210325T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Huntsville AL
916 AM CDT Thu Mar 25 2021
The National Weather Service in Huntsville has issued a
* Flash Flood Warning for...
Northern Cullman County in north central Alabama...
Southern Morgan County in north central Alabama...
Southwestern Marshall County in northeastern Alabama...
* Until 1215 PM CDT.
* At 916 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across portions of northern and central Cullman County.
Between 2 and 3 inches of rain have fallen. Flash flooding is
ongoing or expected to begin shortly.
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...
Cullman, Good Hope, Dodge City, Baldwin, Vinemont, Baileyton, Eva,
Phelan, Logan, Crane Hill, Smith Lake, Hulaco and Joppa.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
&&
LAT...LON 3411 8711 3425 8689 3433 8669 3431 8654
3429 8652 3427 8651 3411 8677 3404 8689
3397 8708 3396 8711 3397 8713 3399 8713
3399 8711
FLASH FLOOD...RADAR INDICATED
$$
AMP2 follow-up statements
468
WGUS74 KHUN 251458
FFSHUN
Flash Flood Statement
National Weather Service Huntsville AL
958 AM CDT Thu Mar 25 2021
ALC043-095-103-251715-
/O.CON.KHUN.FF.W.0006.000000T0000Z-210325T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cullman AL-Marshall AL-Morgan AL-
958 AM CDT Thu Mar 25 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT THIS
AFTERNOON FOR NORTHERN CULLMAN, SOUTHERN MORGAN AND SOUTHWESTERN
MARSHALL COUNTIES...
At 958 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 3 inches of rain have
fallen. Several areas of flash flooding was reported in and near the
City of Cullman, including a portion of Interstate 65 near exit 308.
Several other roads were reported to be flooded across northeastern
Cullman County.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Emergency Manager and Doppler Radar Estimates.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Cullman, Good Hope, Dodge City, Baldwin, Vinemont, Baileyton, Eva,
Phelan, Logan, Crane Hill, Smith Lake, Hulaco and Joppa.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
&&
LAT...LON 3411 8711 3425 8689 3433 8669 3431 8654
3429 8652 3427 8651 3411 8677 3404 8689
3397 8708 3396 8711 3397 8713 3399 8713
3399 8711
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
AMP134
WGUS54 KHUN 251703
FFWHUN
ALC043-095-103-251815-
/O.EXT.KHUN.FF.W.0006.000000T0000Z-210325T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Huntsville AL
1203 PM CDT Thu Mar 25 2021
The National Weather Service in Huntsville has extended the
* Flash Flood Warning for...
Northern Cullman County in north central Alabama...
Southern Morgan County in north central Alabama...
Southwestern Marshall County in northeastern Alabama...
* Until 115 PM CDT.
* At 1203 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Flash flooding is ongoing or expected to begin
shortly.
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...
Cullman, Good Hope, Dodge City, Baldwin, Vinemont, Baileyton, Eva,
Phelan, Logan, Crane Hill, Smith Lake, Hulaco and Joppa.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses
as well as other drainage areas and low lying spots.
&&
LAT...LON 3411 8711 3425 8689 3433 8669 3431 8654
3429 8652 3427 8651 3411 8677 3404 8689
3397 8708 3396 8711 3397 8713 3399 8713
3399 8711
FLASH FLOOD...RADAR INDICATED
$$
MAThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 25, 3:01 AM CDT | Wind Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 20 hr |
| Mar 25, 6:40 AM CDT | Special Weather Statement | HUN | Marshall | 50 min |
| Mar 25, 7:37 AM CDT | Special Weather Statement | HUN | Colbert | 38 min |
| Mar 25, 7:55 AM CDT | Special Weather Statement | HUN | Cullman | 50 min |
| Mar 25, 8:20 AM CDT | Severe Thunderstorm Warning | HUN | Cullman, Morgan | 25 min |
| Mar 25, 8:38 AM CDT | Severe Thunderstorm Warning | HUN | Marshall | 52 min |
| Mar 25, 8:50 AM CDT | Special Weather Statement | HUN | Cullman | 40 min |
| Mar 25, 9:13 AM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 62 min |
| Mar 25, 10:22 AM CDT | Flash Flood Warning | HUN | Cullman, DeKalb, Jackson, Madison, Marshall, Morgan | 3 hr |
| Mar 25, 10:49 AM CDT | Special Weather Statement | HUN | Marshall, Morgan | 41 min |
| Mar 25, 2:21 PM CDT | Flash Flood Warning | HUN | Cullman, Lawrence, Marshall, Morgan | 3 hr |
| Mar 25, 2:35 PM CDT | Flash Flood Warning | HUN | Lawrence, Limestone, Morgan | 3 hr |
| Mar 25, 2:37 PM CDT | Special Weather Statement | HUN | Colbert, Lauderdale | 38 min |
| Mar 25, 2:45 PM CDT | Flash Flood Warning | HUN | Colbert, Franklin, Lauderdale, Lawrence | 3 hr |
| Mar 25, 2:53 PM CDT | Tornado Warning | HUN | Colbert, Franklin, Lauderdale | 21 min |
| Mar 25, 2:56 PM CDT | Special Weather Statement | HUN | Jackson | 34 min |
| Mar 25, 3:07 PM CDT | Flash Flood Warning | HUN | Cullman, DeKalb, Jackson, Madison, Marshall, Morgan | 3 hr |
| Mar 25, 4:08 PM CDT | Special Weather Statement | HUN | Marshall | 37 min |
| Mar 25, 4:44 PM CDT | Special Weather Statement | HUN | DeKalb | 46 min |
| Mar 25, 5:01 PM CDT | Special Weather Statement | HUN | Cullman | 29 min |
| Mar 25, 5:16 PM CDT | Areal Flood Warning | HUN | Colbert, Franklin, Lauderdale, Lawrence | 4 hr |
| Mar 25, 5:21 PM CDT | Areal Flood Warning | HUN | Lawrence, Limestone, Morgan | 5 hr |
| Mar 25, 5:23 PM CDT | Areal Flood Warning | HUN | Cullman, Lawrence, Marshall, Morgan | 5 hr |
| Mar 25, 6:13 PM CDT | Areal Flood Warning | HUN | Cullman, DeKalb, Jackson, Madison, Marshall, Morgan | 3 hr |
| Mar 25, 6:22 PM CDT | Flash Flood Warning | HUN | DeKalb | 3 hr |
| Mar 25, 6:24 PM CDT | Special Weather Statement | HUN | DeKalb, Marshall | 51 min |
Nearby
Flash Flood Warnings in Alabama, 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.