Alert archive / Alabama / Flash Flood Warnings in 2009
Flash Flood Warning 46, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Aug 21, 2009, 5:50 PM CDT for Wayne County, Mississippi; Choctaw County, Washington County, Alabama. It was in force for 115 min. 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 21, 2009, 5:50 PM CDT (22:50 UTC)
- Expired
- Aug 21, 2009, 7:45 PM CDT
- In force
- 115 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Choctaw County, AL, Washington County, AL, Wayne County, MS
The radar
The Mobile radar (KMOB), 125 km from the middle of the area, began a volume at 22:54 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, 10.8 hours before the alert went out and 161 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
- 2064 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KMOB 212250
FFWMOB
ALC023-129-MSC153-220045-
/O.NEW.KMOB.FF.W.0046.090821T2250Z-090822T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
550 PM CDT FRI AUG 21 2009
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
THIS INCLUDES THE CITY OF WAYNESBORO...
SOUTHWESTERN CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 745 PM CDT
* AT 547 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM THUNDERSTORMS ALONG A LINE FROM 18 MILES
NORTHEAST OF WAYNESBORO TO 9 MILES WEST OF WAYNESBORO...MOVING
SOUTH AT 15 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ISNEY...GRETNA...BOLINGER...WOODWARDS...SILAS...BLADON SPRINGS...
AQUILLA...CULLOMBURG...DENHAM...SILVER CROSS...WINCHESTER...
CLARA...KOENTON...MILLRY...HEALING SPRINGS...FRANKVILLE...ROBINSON
JUNCTION...CHICORA...BIGBEE...LOPER...BUCKATUNNA...YARBO AND
BATTLES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 3155 8809 3145 8875 3179 8889 3184 8878
3185 8863 3189 8848 3200 8847 3211 8826
$$1 follow-up statement
000
WGUS74 KMOB 220011
FFSMOB
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
711 PM CDT FRI AUG 21 2009
ALC023-129-MSC153-220045-
/O.CON.KMOB.FF.W.0046.000000T0000Z-090822T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-CHOCTAW AL-WAYNE MS-
711 PM CDT FRI AUG 21 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
WAYNE...SOUTHWESTERN CHOCTAW AND NORTHWESTERN WASHINGTON COUNTIES...
AT 704 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE RAIN ALONG WITH ISOLATED THUNDERSTORMS MOVING SOUTHEAST AT
15 MPH ACROSS THE WARNING AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3189 8819 3188 8820 3155 8810 3145 8875
3179 8889 3184 8878 3185 8863 3189 8848
3198 8841 3198 8823
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 4:59 PM CDT | Severe Thunderstorm Warning | MOB | Wayne | 46 min |
| Aug 20, 7:51 PM CDT | Areal Flood Advisory | MOB | Choctaw | 114 min |
| Aug 21, 5:38 AM CDT | Marine Weather Statement | MOB | 6 hr | |
| Aug 21, 10:51 AM CDT | Special Marine Warning | MOB | 54 min | |
| Aug 21, 2:28 PM CDT | Special Marine Warning | MOB | 62 min | |
| Aug 21, 2:49 PM CDT | Areal Flood Advisory | MOB | Mobile | 116 min |
| Aug 21, 3:30 PM CDT | Special Marine Warning | MOB | 90 min | |
| Aug 21, 3:41 PM CDT | Areal Flood Advisory | MOB | Choctaw | 6 hr |
| Aug 21, 4:03 PM CDT | Areal Flood Advisory | MOB | Butler, Crenshaw | 4 hr |
| Aug 21, 4:16 PM CDT | Areal Flood Advisory | MOB | Clarke | 4 hr |
Nearby
Flash Flood Warnings in Alabama, 2009Flash Flood Warnings in Mississippi, 2009Every flash flood warning in 2009
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.