Alert archive / Alabama / Flash Flood Warnings in 2001

Flash Flood Warning 8, NWS Mobile, AL

April 3, 2001Clarke County, Washington County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 3, 2001, 9:31 PM CDT for Clarke County, Washington County, Alabama. It was in force for 89 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Apr 3, 2001, 9:31 PM CDT (02:31 UTC)
Expired
Apr 3, 2001, 11:00 PM CDT
In force
89 min
Issued by
NWS Mobile, AL
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Clarke County, AL, Washington County, AL

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.5 hours before the alert went out and 212 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, Jackson, MS at 00:00Z on 2001-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3104 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, Jackson, MS at 00:00Z on 2001-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.19395878Sfc1 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
3104 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
614 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
5.5
Supercell composite
21.2

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 040232
FFWMOB
ALC025-129-040400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
931 PM CDT TUE APR 3 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLARKE COUNTY IN SOUTHWEST ALABAMA
  WASHINGTON COUNTY IN SOUTHWEST ALABAMA

* UNTIL 1100 PM CDT

* AT 926 PM CDT...LAW ENFORCEMENT OFFICIALS REPORTED A FLASH FLOOD
  FROM LOPER TO GAINESTOWN...OR FROM 6 MILES NORTH OF CHATOM TO 16
  MILES SOUTH OF GROVE HILL...MOVING SOUTHEAST AT 10 MPH.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE NEAR...
  LEROY BY 935 PM CDT
  GAINESTOWN BY 955 PM CDT
  CARSON BY 1005 PM CDT
  PRESTWICK BY 1015 PM CDT

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. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK 
HIGHER GROUND. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO 
RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. 

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MOBILE.

LAT...LON 3159 8834 3165 8766 3143 8768 3145 8814


K

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 7:08 PM CDTSevere Thunderstorm WarningMOBChoctaw17 min
Apr 3, 7:22 PM CDTSevere Thunderstorm WarningMOBWashington23 min
Apr 3, 9:40 PM CDTSevere Thunderstorm WarningMOBMonroe35 min
Apr 4, 6:50 AM CDTSevere Thunderstorm WarningMOBClarke, Marengo25 min
Apr 4, 7:50 AM CDTFlash Flood WarningMOBMarengo85 min
Apr 4, 8:15 AM CDTFlash Flood WarningMOBChoctaw90 min
Apr 4, 8:58 AM CDTSevere Thunderstorm WarningMOBWashington32 min
Apr 4, 9:01 AM CDTSevere Thunderstorm WarningMOBButler19 min
Apr 4, 9:30 AM CDTSevere Thunderstorm WarningMOBWashington30 min
Apr 4, 9:45 AM CDTFlash Flood WarningMOBChoctaw90 min
Apr 4, 12:36 PM CDTSevere Thunderstorm WarningMOBEscambia24 min

Nearby

Flash Flood Warnings in Alabama, 2001Every flash flood warning in 2001

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.