Alert archive / Alabama / Flash Flood Warnings in 2021
Flash Flood Warning 74, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Aug 31, 2021, 3:33 AM CDT for Escambia County, Santa Rosa County, Florida; 4 counties in Alabama. It was in force for 4 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
- Aug 31, 2021, 3:33 AM CDT (08:33 UTC)
- Expired
- Aug 31, 2021, 7:10 AM CDT
- In force
- 4 hr
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Baldwin County, AL, Conecuh County, AL, Escambia County, AL, Monroe County, AL, Escambia County, FL, Santa Rosa County, FL
The radar
The Mobile radar (KMOB), 116 km from the middle of the area, began a volume at 08:34 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
Birmingham, AL (KBMX), launched 00:00Z, 8.6 hours before the alert went out and 219 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
- 182 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 524 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 268 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.3
The text
As transmitted.
324
WGUS54 KMOB 310833
FFWMOB
ALC003-035-053-099-FLC033-113-311445-
/O.NEW.KMOB.FF.W.0074.210831T0833Z-210831T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
333 AM CDT Tue Aug 31 2021
The National Weather Service in Mobile has issued a
* Flash Flood Warning for...
Conecuh County in south central Alabama...
Escambia County in south central Alabama...
Central Monroe County in south central Alabama...
Central Baldwin County in southwestern Alabama...
Northwestern Escambia County in northwestern Florida...
Northwestern Santa Rosa County in northwestern Florida...
* Until 945 AM CDT Tuesday.
* At 333 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1
hour. 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.
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...
Bay Minette, Atmore, Monroeville, Brewton, Evergreen, Century,
Flomaton, Frisco City, McCullough, Peterman, Stapleton, East
Brewton, Uriah, Castleberry, Excel, Repton, Pollard, I65 And AL
113, I65 And AL 21 and I65 And CR 1.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3067 8789 3172 8742 3157 8687 3155 8686
3153 8684 3152 8670 3078 8733
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
MM1 follow-up statement
786
WGUS74 KMOB 311210
FFSMOB
Flash Flood Statement
National Weather Service Mobile AL
710 AM CDT Tue Aug 31 2021
ALC003-035-053-099-FLC033-113-311220-
/O.CAN.KMOB.FF.W.0074.000000T0000Z-210831T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Conecuh AL-Escambia AL-Monroe AL-Escambia FL-Santa
Rosa FL-
710 AM CDT Tue Aug 31 2021
...FLASH FLOOD WARNING IS CANCELLED FOR CONECUH, ESCAMBIA, CENTRAL
MONROE, CENTRAL BALDWIN, NORTHWESTERN ESCAMBIA AND NORTHWESTERN
SANTA ROSA COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 1200 PM CDT for A
portion of south central Alabama.
A Flash Flood Watch remains in effect until 1200 PM CDT for Portions
of Alabama. Portions of northwest Florida.
LAT...LON 3067 8789 3172 8742 3157 8687 3155 8686
3153 8684 3152 8670 3078 8733
$$
MMThe office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 6:04 AM CDT | High Surf Advisory | MOB | Escambia, Okaloosa, Santa Rosa | 12 hr |
| Aug 31, 7:09 AM CDT | Areal Flood Warning | MOB | Escambia | 6 hr |
| Aug 31, 7:14 AM CDT | Flash Flood Warning | MOB | Escambia, Okaloosa, Santa Rosa | 6 hr |
| Aug 31, 7:57 AM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 33 min |
| Aug 30, 10:22 PM CDT | Flash Flood Warning | MOB | Mobile, Washington | 6 hr |
| Aug 30, 11:27 PM CDT | Tornado Warning | MOB | Mobile | 13 min |
| Aug 31, 1:18 AM CDT | Flash Flood Warning | MOB | Baldwin, Clarke, Mobile, Monroe, Washington | 6 hr |
| Aug 31, 3:42 AM CDT | Special Marine Warning | MOB | 93 min | |
| Aug 31, 4:21 AM CDT | Special Marine Warning | MOB | 54 min | |
| Aug 31, 4:41 AM CDT | Special Marine Warning | MOB | 34 min | |
| Aug 31, 4:52 AM CDT | Severe Thunderstorm Warning | MOB | Covington | 23 min |
| Aug 31, 5:12 AM CDT | Special Marine Warning | MOB | 93 min | |
| Aug 31, 5:17 AM CDT | Special Marine Warning | MOB | 58 min | |
| Aug 31, 5:42 AM CDT | Special Marine Warning | MOB | 63 min | |
| Aug 31, 5:46 AM CDT | Severe Thunderstorm Warning | MOB | Butler, Crenshaw | 44 min |
| Aug 31, 6:39 AM CDT | Special Marine Warning | MOB | 96 min | |
| Aug 31, 6:42 AM CDT | Special Marine Warning | MOB | 63 min | |
| Aug 31, 6:51 AM CDT | Special Marine Warning | MOB | 36 min | |
| Aug 31, 7:45 AM CDT | Special Marine Warning | MOB | 90 min | |
| Aug 31, 8:10 AM CDT | Special Marine Warning | MOB | 65 min | |
| Aug 31, 8:28 AM CDT | Special Marine Warning | MOB | 92 min | |
| Aug 31, 9:08 AM CDT | Special Marine Warning | MOB | 97 min |
Nearby
Flash Flood Warnings in Alabama, 2021Flash Flood Warnings in Florida, 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.