Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 5, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Mar 17, 2021, 2:19 PM CDT for Wayne County, Mississippi; Choctaw County, Clarke County, Washington County, Alabama. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 17, 2021, 2:19 PM CDT (19:19 UTC)
- Expired
- Mar 17, 2021, 8:15 PM CDT
- In force
- 6 hr
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Choctaw County, AL, Clarke County, AL, Washington County, AL, Wayne County, MS
The radar
The Mobile radar (KMOB), 151 km from the middle of the area, began a volume at 19:21 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
Jackson, MS (KJAN), launched 12:00Z, 7.3 hours before the alert went out and 180 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
- 687 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 713 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 218 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.9
The text
As transmitted.
907
WGUS54 KMOB 171919
FFWMOB
ALC023-025-129-MSC153-180115-
/O.NEW.KMOB.FF.W.0005.210317T1919Z-210318T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
219 PM CDT Wed Mar 17 2021
The National Weather Service in Mobile has issued a
* Flash Flood Warning for...
Choctaw County in southwestern Alabama...
Northwestern Clarke County in southwestern Alabama...
Northwestern Washington County in southwestern Alabama...
Wayne County in southeastern Mississippi...
* Until 815 PM CDT.
* At 219 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1 and 3 inches of rain have fallen. Additional rainfall amounts of
1 to 3 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
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...
Waynesboro, Butler, Clara, Lisman, Millry, Silas, Coffeeville,
Pennington, Gilbertown, Toxey, Old Samuel, Paragon, Souwilpa,
Water Valley, Bolinger, Hodgewood, Barrytown, Jackson Spur,
Okatuppa and Needham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3189 8847 3231 8842 3231 8793 3229 8793
3230 8798 3228 8802 3218 8801 3215 8802
3214 8804 3208 8804 3206 8811 3202 8812
3199 8807 3199 8781 3169 8781 3149 8894
3182 8894 3185 8865
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
CGAL2 follow-up statements
964
WGUS74 KMOB 172132
FFSMOB
Flash Flood Statement
National Weather Service Mobile AL
432 PM CDT Wed Mar 17 2021
ALC023-025-129-MSC153-180115-
/O.CON.KMOB.FF.W.0005.000000T0000Z-210318T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Clarke AL-Washington AL-Wayne MS-
432 PM CDT Wed Mar 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CDT THIS
EVENING FOR CHOCTAW, NORTHWESTERN CLARKE, NORTHWESTERN WASHINGTON
AND WAYNE COUNTIES...
At 432 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 2
and 4 inches of rain have fallen. Additional rainfall amounts of 1
to 3 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Waynesboro, Butler, Clara, Lisman, Millry, Silas, Coffeeville,
Pennington, Gilbertown, Toxey, Old Samuel, Paragon, Souwilpa,
Water Valley, Bolinger, Hodgewood, Barrytown, Jackson Spur,
Okatuppa and Needham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3189 8847 3231 8842 3231 8793 3229 8793
3230 8798 3228 8802 3218 8801 3215 8802
3214 8804 3208 8804 3206 8811 3202 8812
3199 8807 3199 8781 3169 8781 3149 8894
3182 8894 3185 8865
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
CGAL135
WGUS74 KMOB 180112
FFSMOB
Flash Flood Statement
National Weather Service Mobile AL
812 PM CDT Wed Mar 17 2021
ALC023-025-129-MSC153-180122-
/O.EXP.KMOB.FF.W.0005.000000T0000Z-210318T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Choctaw AL-Clarke AL-Washington AL-Wayne MS-
812 PM CDT Wed Mar 17 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 815 PM CDT THIS EVENING FOR
CHOCTAW, NORTHWESTERN CLARKE, NORTHWESTERN WASHINGTON AND WAYNE
COUNTIES...
The heavy rain has ended. Flash flooding is no longer expected, but
moderate rains through the rest of this evening could lead to minor
urban, small stream, and low-lying area flooding. This will be
monitored.
A Flash Flood Watch remains in effect until 400 AM CDT Thursday for
Portions of Alabama and southeast Mississippi.
LAT...LON 3189 8847 3231 8842 3231 8793 3229 8793
3230 8798 3228 8802 3218 8801 3215 8802
3214 8804 3208 8804 3206 8811 3202 8812
3199 8807 3199 8781 3169 8781 3149 8894
3182 8894 3185 8865
$$
CGALThe office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 9:23 PM CDT | Areal Flood Warning | MOB | Wayne | 16 hr |
| Mar 17, 4:27 AM CDT | Flash Flood Watch | MOB | Wayne | 18 hr |
| Mar 17, 10:28 AM CDT | River Flood Warning | MOB | George, Greene, Wayne | 21 days |
| Mar 17, 10:32 AM CDT | River Flood Warning | MOB | George, Greene, Perry | 18 days |
| Mar 17, 11:41 AM CDT | Special Weather Statement | MOB | Wayne | 49 min |
| Mar 17, 11:58 AM CDT | Tornado Warning | MOB | Wayne | 47 min |
| Mar 17, 12:59 PM CDT | Severe Thunderstorm Warning | MOB | Wayne | 46 min |
| Mar 17, 1:30 PM CDT | Tornado Warning | MOB | Wayne | 45 min |
| Mar 17, 2:03 PM CDT | Severe Thunderstorm Warning | MOB | Wayne | 42 min |
| Mar 17, 2:34 PM CDT | Severe Thunderstorm Warning | MOB | Wayne | 56 min |
| Mar 17, 3:28 PM CDT | Severe Thunderstorm Warning | MOB | Wayne | 47 min |
| Mar 17, 3:46 PM CDT | Tornado Warning | MOB | Wayne | 44 min |
| Mar 17, 4:04 PM CDT | Tornado Warning | MOB | Wayne | 26 min |
| Mar 17, 6:19 PM CDT | Severe Thunderstorm Warning | MOB | Greene, Perry, Wayne | 56 min |
| Mar 16, 11:44 PM CDT | Special Weather Statement | MOB | Covington | 46 min |
| Mar 17, 4:18 AM CDT | High Surf Advisory | MOB | Baldwin, Mobile | 26 hr |
| Mar 17, 10:36 AM CDT | River Flood Warning | MOB | Choctaw, Clarke, Washington | 32 days |
| Mar 17, 10:39 AM CDT | River Flood Warning | MOB | Clarke, Washington | 32 days |
| Mar 17, 1:12 PM CDT | Tornado Warning | MOB | Choctaw | 48 min |
| Mar 17, 1:38 PM CDT | Tornado Warning | MOB | Choctaw | 37 min |
| Mar 17, 2:05 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw, Clarke | 40 min |
| Mar 17, 2:16 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 44 min |
| Mar 17, 2:36 PM CDT | Tornado Warning | MOB | Clarke | 39 min |
| Mar 17, 2:38 PM CDT | Tornado Warning | MOB | Choctaw | 52 min |
| Mar 17, 3:55 PM CDT | Severe Thunderstorm Warning | MOB | Wilcox | 20 min |
| Mar 17, 4:00 PM CDT | Tornado Warning | MOB | Wilcox | 14 min |
| Mar 17, 4:17 PM CDT | Tornado Warning | MOB | Choctaw, Clarke | 43 min |
| Mar 17, 5:15 PM CDT | Severe Thunderstorm Warning | MOB | Clarke | 30 min |
| Mar 17, 5:20 PM CDT | Tornado Warning | MOB | Clarke, Wilcox | 40 min |
| Mar 17, 5:53 PM CDT | Tornado Warning | MOB | Wilcox | 37 min |
| Mar 17, 5:54 PM CDT | Flash Flood Warning | MOB | Clarke, Wilcox | 6 hr |
| Mar 17, 5:59 PM CDT | Severe Thunderstorm Warning | MOB | Clarke, Wilcox | 46 min |
| Mar 17, 6:08 PM CDT | Tornado Warning | MOB | Wilcox | 22 min |
Nearby
Flash Flood Warnings in Alabama, 2021Flash Flood Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.