Alert archive / Alabama / Flash Flood Warnings in 2010

Flash Flood Warning 21, NWS Mobile, AL

August 2, 2010Clarke County, Monroe County, Wilcox County, Alabama

NWS Mobile, AL issued this flash flood warning at Aug 2, 2010, 4:32 PM CDT for Clarke County, Monroe County, Wilcox County, Alabama. It was in force for 70 min. 1 report 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
Aug 2, 2010, 4:32 PM CDT (21:32 UTC)
Expired
Aug 2, 2010, 5:42 PM CDT
In force
70 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Clarke County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Mobile radar (KMOB), 144 km from the middle of the area, began a volume at 21:35 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

TimeReportWhereRemark
Aug 2, 5:08 PM CDTFLASH FLOODVredenburgh, ALTWO TO THREE INCHES OF WATER FLOWING ACROSS AREA ROADWAYS.

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, 9.5 hours before the alert went out and 169 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.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2010-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1999 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2010-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1999 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
1139 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
-18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

248 
WGUS54 KMOB 022132
FFWMOB
ALC025-099-131-022330-
/O.NEW.KMOB.FF.W.0021.100802T2132Z-100802T2330Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
432 PM CDT MON AUG 2 2010

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHWESTERN WILCOX COUNTY IN SOUTH CENTRAL ALABAMA...
  EAST CENTRAL CLARKE COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 630 PM CDT

* AT 426 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAIN FROM THUNDERSTORMS OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  VREDENBURGH...TURKESTAN...RIVER RIDGE...NATCHEZ...NADAWAH...
  KEITH...FRANKLIN...FINCHBURG...CORDUROY STATION...CHESTNUT...BUENA
  VISTA AND BEATRICE

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE LIKELY IN THE 
WARNED AREA.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 3177 8710 3153 8762 3172 8778 3199 8740

$$

COHEN
2 follow-up statements
745 
WGUS74 KMOB 022214
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
514 PM CDT MON AUG 2 2010

ALC025-099-131-022330-
/O.CON.KMOB.FF.W.0021.000000T0000Z-100802T2330Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE AL-CLARKE AL-WILCOX AL-
514 PM CDT MON AUG 2 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
SOUTHWESTERN WILCOX...EAST CENTRAL CLARKE AND NORTHERN MONROE
COUNTIES...

AT 508 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS PRODUCING HEAVY RAIN OVER THE WARNED AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
VREDENBURGH...TURKESTAN...RIVER RIDGE...NATCHEZ...NADAWAH... 
KEITH...FRANKLIN... FINCHBURG...CORDUROY STATION...CHESTNUT...
BUENA VISTA....AND BEATRICE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 ARE LIKELY IN THE WARNED 
AREA.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

&&

LAT...LON 3177 8710 3153 8762 3172 8778 3199 8740

$$

COHEN
653 
WGUS74 KMOB 022242
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
542 PM CDT MON AUG 2 2010

ALC025-099-131-022251-
/O.CAN.KMOB.FF.W.0021.000000T0000Z-100802T2330Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE AL-CLARKE AL-WILCOX AL-
542 PM CDT MON AUG 2 2010

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN 
WILCOX...EAST CENTRAL CLARKE...AND NORTHERN MONROE COUNTIES...

HEAVY RAINFALL AND THE RISK FOR FLASH FLOODING HAS ENDED ACROSS THE 
PREVIOUSLY WARNED AREA...AND THUS THE FLASH FLOOD WARNING HAS BEEN 
CANCELLED.

LAT...LON 3177 8710 3153 8762 3172 8778 3199 8740

$$

COHEN

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 1, 8:10 PM CDTSpecial Marine WarningMOB35 min
Aug 1, 8:40 PM CDTSpecial Marine WarningMOB35 min
Aug 2, 3:11 PM CDTSevere Thunderstorm WarningMOBBaldwin49 min
Aug 2, 3:21 PM CDTExcessive Heat WatchMOBChoctaw, Clarke, Monroe, Washington, Wilcox24 hr
Aug 2, 3:21 PM CDTExcessive Heat WarningMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more27 hr
Aug 2, 4:15 PM CDTSevere Thunderstorm WarningMOBClarke, Monroe, Wilcox45 min
Aug 2, 4:25 PM CDTSevere Thunderstorm WarningMOBMonroe, Wilcox35 min
Aug 2, 4:44 PM CDTSevere Thunderstorm WarningMOBWashington30 min
Aug 2, 4:57 PM CDTSpecial Marine WarningMOB63 min

Nearby

Flash Flood Warnings in Alabama, 2010Every flash flood warning in 2010

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.