Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 81, NWS Mobile, AL

April 3, 2001Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 3, 2001, 7:22 PM CDT for Washington County, Alabama. It was in force for 23 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, 7:22 PM CDT (00:22 UTC)
Expired
Apr 3, 2001, 7:45 PM CDT
In force
23 min
Issued by
NWS Mobile, AL
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Washington County, AL

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.4 hours before the alert went out and 187 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°0°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.

074 
WUUS54 KMOB 040024 RRA
SVRMOB
ALC129-040045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
722 PM CDT TUE APR 3 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN SOUTHWEST ALABAMA

* UNTIL 745 PM CDT

* AT 722 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM 7 MILES NORTH OF HEALING SPRINGS...MOVING      
  SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HEALING SPRINGS BY 725 PM CDT
  MILLRY...LOPER BY 730 PM CDT
  KOENTON...YARBO BY 735 PM CDT
  SILVER CROSS...FRANKVILLE BY 745 PM CDT

STRONG DAMAGING WIND...LARGE HAIL...AND HEAVY RAIN ARE LIKELY WITH
THIS STORM.  IF IN THE PATH OF THIS STORM...TAKE COVER IN A STURDY
SHELTER UNTIL THE STORM HAS PASSED.

LAT...LON 3168 8832 3168 8845 3153 8841 3151 8804
          3169 8811

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, 9:31 PM CDTFlash Flood WarningMOBClarke, Washington89 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

Severe Thunderstorm Warnings in Alabama, 2001Every severe thunderstorm 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.