Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 152, NWS Mobile, AL

August 19, 2001Conecuh County, Covington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Aug 19, 2001, 1:57 PM CDT for Conecuh County, Covington County, Alabama. It was in force for 48 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
Aug 19, 2001, 1:57 PM CDT (18:57 UTC)
Expired
Aug 19, 2001, 2:45 PM CDT
In force
48 min
Issued by
NWS Mobile, AL
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Conecuh County, AL, Covington County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.0 hours before the alert went out and 201 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 2001-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 507 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, Birmingham, AL at 12:00Z on 2001-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.193958Sfc1 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
507 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
594 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

593 
WUUS54 KMOB 191901
SVRMOB
ALC035-039-191945-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
157 PM CDT SUN AUG 19 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COVINGTON COUNTY IN SOUTH CENTRAL ALABAMA
  CONECUH COUNTY IN SOUTH CENTRAL ALABAMA

* UNTIL 245 PM CDT

* AT 157 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  LINE OF STRONG TO SEVERE THUNDERSTORMS FROM THE SOUTHWEST ALABAMA  
  COAST EXTENDING NORTHEAST INTO SOUTH CENTRAL ALABAMA...MOVING EAST 
  AT 20 TO 30 MPH.

*STRONG TO SEVERE THUNDERSTORMS WILL BE MOVING OVER MOST OF THE 
EASTERN PART OF CONECUH COUNTY AND MOST OF COVINGTON COUNTY DURING 
THE NEXT HOUR. 

STRONG DAMAGING WIND...LARGE HAIL AND DEADLY LIGHTNING ARE LIKELY 
WITH THESE STORMS.  IF IN THE PATH OF THESE STORMS...TAKE COVER IN A 
STURDY SHELTER UNTIL THE STORMS HAVE PASSED.

LAT...LON 3151 8691 3131 8681 3107 8650 3148 8653

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 12:52 PM CDTSevere Thunderstorm WarningMOBClarke53 min
Aug 19, 1:45 PM CDTSevere Thunderstorm WarningMOBBaldwin, Escambia60 min
Aug 19, 1:45 PM CDTSevere Thunderstorm WarningMOBMobile60 min
Aug 19, 2:46 PM CDTSevere Thunderstorm WarningMOBCovington44 min
Aug 19, 3:05 PM CDTTornado WarningMOBCovington25 min
Aug 19, 3:38 PM CDTSevere Thunderstorm WarningMOBCovington22 min
Aug 19, 3:45 PM CDTTornado WarningMOBCovington30 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.