Alert archive / Alabama / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 359, NWS Birmingham, AL

July 20, 2000Montgomery County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 20, 2000, 7:27 PM CDT for Montgomery County, Alabama. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 20, 2000, 7:27 PM CDT (00:27 UTC)
Expired
Jul 20, 2000, 7:45 PM CDT
In force
18 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Montgomery County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.5 hours before the alert went out and 205 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, Peachtre/Fal Fld, GA at 00:00Z on 2000-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 532 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, Peachtre/Fal Fld, GA at 00:00Z on 2000-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
532 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
2423 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
68 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.

000 
WUUS54 KBMX 210030 COR
SVRBHM
ALC101-210045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTION FOR EXTENSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
729 PM CDT THU JUL 20 2000

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A...

* SEVERE THUNDERSTORM WARNING FOR...
  MONTGOMERY COUNTY IN ALABAMA...

* UNTIL 745 PM CDT.

* AT 729 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM EXTREME
  NORTHEASTERN MONTGOMERY COUNTY TO EXTREME EAST CENTRAL MONTGOMERY
  COUNTY TO EXTREME SOUTHEASTERN MONTGOMERY COUNTY...MOVING EAST
  AT 20 MPH.  THIS EXTENDS AN EARLIER WARNING.

STRONG DAMAGING WIND...LARGE HAIL...-AND VERY HEAVY RAIN ARE LIKELY
WITH THIS STORM. TAKE COVER IN A STURDY SHELTER UNTIL THE STORM
PASSES.

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 7:05 PM CDTSevere Thunderstorm WarningBMXClay40 min
Jul 20, 7:08 PM CDTSevere Thunderstorm WarningBMXCalhoun22 min
Jul 20, 7:09 PM CDTSevere Thunderstorm WarningBMXCoosa21 min
Jul 20, 7:13 PM CDTSevere Thunderstorm WarningBMXChambers, Randolph62 min
Jul 20, 7:29 PM CDTSevere Thunderstorm WarningBMXTallapoosa31 min
Jul 20, 7:38 PM CDTSevere Thunderstorm WarningBMXBullock, Pike52 min
Jul 20, 7:45 PM CDTSevere Thunderstorm WarningBMXLee45 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2000Every severe thunderstorm warning in 2000

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.