Alert archive / Alabama / Flash Flood Warnings in 2002

Flash Flood Warning 10, NWS Birmingham, AL

April 30, 2002Jefferson County, Alabama

NWS Birmingham, AL issued this flash flood warning at Apr 30, 2002, 5:39 PM CDT for Jefferson County, Alabama. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 30, 2002, 5:39 PM CDT (22:39 UTC)
Expired
Apr 30, 2002, 8:30 PM CDT
In force
3 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Jefferson County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.7 hours before the alert went out and 43 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 2002-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2002-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 302 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1301 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
302 m²/s²
0-3 km storm-relative helicity
350 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KBMX 302239
FFWBHM
ALC073-010130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
530 PM CDT TUE APR 30 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JEFFERSON COUNTY IN ALABAMA

* UNTIL 830 PM CDT

* AT 530 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED WIDESPREAD 
SHOWERS AND THUNDERSTORMS OVER MOST OF JEFFERSON COUNTY...MOVING 
EAST AT 30 TO 40 MPH.  RAINFALL AMOUNTS OF TWO TO THREE INCHES HAVE 
BEEN COMMON THROUGHOUT THE NORTHERN HALF OF THE COUNTY SINCE EARLY 
AFTERNOON.  FIVE MILE CREEK IS REPORTED TO BE OUT OF THE ITS BANKS 
IN SEVERAL LOCATIONS...AND NUMEROUS REPORTS OF STREET FLOODING HAVE 
BEEN RECEIVED IN THE PINSON AND CENTERPOINT AREAS.  

ANOTHER BAND OF THUNDERSTORMS WITH HEAVY RAIN WILL MOVE ACROSS MOST 
OF JEFFERSON COUNTY BETWEEN 6 PM AND 8 PM...WITH ADDITIONAL RAINFALL 
AMOUNTS IN EXCESS OF ONE INCH EXPECTED.  THIS WILL AGGRAVATE AND 
PROLONG THE STREET FLOODING PROBLEM ACROSS MOST OF THE COUNTY.     

MOST FLASH FLOODING DEATHS ARE AUTOMOBILE RELATED. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROAD.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO
ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
1 follow-up statement
000 
WGUS74 KBMX 010032
FFSBHM
ALC073-010100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
729 PM CDT TUE APR 30 2002

...FLASH FLOOD WARNING FOR JEFFERSON COUNTY CANCELLED...

AT 729 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT 
RAINFALL HAS DIMINISHED ACROSS JEFFERSON COUNTY.

THERE WILL CONTINUE TO BE STANDING WATER ON AREA ROADS...AND SOME 
CREEKS AND STREAMS AT BANKFUL.  IN ADDITION...DRAINAGE DITCHES WILL 
CONTINUE TO RUN HIGH FOR THE NEXT FEW HOURS DUE TO THE EARLIER 
RAINFALL.  PLEASE DO NOT CROSS ROADS COVERED WITH WATER.  KEEP 
CHILDREN AWAY FROM DITCHES...CREEKS AND STREAMS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 2:16 AM CDTSevere Thunderstorm WarningBMXMarion44 min
Apr 30, 9:04 AM CDTSevere Thunderstorm WarningBMXMarion56 min
Apr 30, 9:10 AM CDTSevere Thunderstorm WarningBMXFranklin35 min
Apr 30, 9:22 AM CDTSevere Thunderstorm WarningBMXCullman23 min
Apr 30, 9:22 AM CDTSevere Thunderstorm WarningBMXBlount38 min
Apr 30, 9:30 AM CDTSevere Thunderstorm WarningBMXLawrence60 min
Apr 30, 9:42 AM CDTSevere Thunderstorm WarningBMXEtowah, St. Clair63 min
Apr 30, 9:51 AM CDTSevere Thunderstorm WarningBMXCleburne54 min
Apr 30, 10:04 AM CDTSevere Thunderstorm WarningBMXBlount56 min
Apr 30, 10:20 AM CDTSevere Thunderstorm WarningBMXMorgan40 min
Apr 30, 10:27 AM CDTSevere Thunderstorm WarningBMXWalker33 min
Apr 30, 10:30 AM CDTSevere Thunderstorm WarningBMXTalladega45 min
Apr 30, 10:38 AM CDTSevere Thunderstorm WarningBMXClay52 min
Apr 30, 1:25 PM CDTSevere Thunderstorm WarningBMXBlount, St. Clair50 min
Apr 30, 1:34 PM CDTSevere Thunderstorm WarningBMXAutauga41 min
Apr 30, 1:38 PM CDTSevere Thunderstorm WarningBMXLamar52 min
Apr 30, 2:04 PM CDTSevere Thunderstorm WarningBMXLowndes26 min
Apr 30, 2:09 PM CDTSevere Thunderstorm WarningBMXFayette66 min
Apr 30, 2:11 PM CDTSevere Thunderstorm WarningBMXMontgomery64 min
Apr 30, 2:23 PM CDTSevere Thunderstorm WarningBMXAutauga12 min
Apr 30, 2:34 PM CDTTornado WarningBMXMontgomery26 min
Apr 30, 2:59 PM CDTSevere Thunderstorm WarningBMXMontgomery46 min
Apr 30, 3:01 PM CDTFlash Flood WarningBMXJefferson3 hr
Apr 30, 3:22 PM CDTSevere Thunderstorm WarningBMXBullock53 min
Apr 30, 3:36 PM CDTSevere Thunderstorm WarningBMXFranklin39 min
Apr 30, 4:15 PM CDTSevere Thunderstorm WarningBMXBullock25 min
Apr 30, 4:22 PM CDTSevere Thunderstorm WarningBMXBarbour53 min
Apr 30, 4:28 PM CDTSevere Thunderstorm WarningBMXLamar47 min
Apr 30, 4:32 PM CDTSevere Thunderstorm WarningBMXPickens58 min
Apr 30, 4:35 PM CDTSevere Thunderstorm WarningBMXTalladega40 min
Apr 30, 4:51 PM CDTTornado WarningBMXPickens39 min
Apr 30, 4:59 PM CDTTornado WarningBMXBarbour31 min
Apr 30, 5:11 PM CDTSevere Thunderstorm WarningBMXFayette49 min
Apr 30, 5:16 PM CDTTornado WarningBMXTuscaloosa59 min
Apr 30, 5:42 PM CDTTornado WarningBMXHale48 min
Apr 30, 5:53 PM CDTFlash Flood WarningBMXWalker3 hr
Apr 30, 6:02 PM CDTTornado WarningBMXBibb58 min
Apr 30, 6:12 PM CDTTornado WarningBMXPerry63 min
Apr 30, 6:19 PM CDTSevere Thunderstorm WarningBMXJefferson, Lee, Shelby56 min
Apr 30, 6:55 PM CDTSevere Thunderstorm WarningBMXChilton50 min

Nearby

Flash Flood Warnings in Alabama, 2002Every flash flood warning in 2002

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.