Alert archive / Alabama / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 383, NWS Birmingham, AL

August 4, 2000Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 4, 2000, 1:21 PM CDT for Tuscaloosa County, Alabama. It was in force for 24 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
Aug 4, 2000, 1:21 PM CDT (18:21 UTC)
Expired
Aug 4, 2000, 1:45 PM CDT
In force
24 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Tuscaloosa County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.4 hours before the alert went out and 70 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 2000-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 991 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 2000-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
991 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
732 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 4, 3:06 AM CDT, 10 hours 15 minutes earlier.

Area forecast discussion, Aug 4, 3:06 AM CDT, 10 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM, AL
306 AM CDT FRI AUG 04 2000

ALL THE MODELS CONTINUE TO BE IN GENERAL AGREEMENT THROUGH THE
FORECAST PERIOD.  UPPER TROUGH THAT HAS BEEN OVER ALABAMA IS FORECAST
TO MOVE EASTWARD THROUGH THE WEEKEND AS THE UPPER HIGH OVER TEXAS
BUILDS EASTWARD.  THIS WILL PUT MUCH OF THE FORECAST AREA OVER A
NORTHWEST FLOW THROUGH THE PERIOD.  BEST CHANCE FOR RAIN SHOULD BE
TODAY AND THIS AFTERNOON FOR MUCH OF THE STATE.   MODELS SHOW WEAK
SURFACE TROUGH MOVING INTO NORTHERN ALABAMA TODAY...TRYING TO PUSH
SLIGHTLY DRIER AIR IN.  WITH PLENTY OF LOW LEVEL MOISTURE STILL
IN PLACE...AND WITH UPPER LEVEL COLD POOLS MOVING OVER THE
STATE...THERE SHOULD STILL BE ENOUGH INSTABILITY OVER THE AREA TO
WARRANT AT LEAST CHANCE POPS TODAY.

FOR SATURDAY...DRIER AIR SHOULD BE SETTLING OVER THE AREA...BUT FEEL
THAT THERE SHOULD BE AT THE LEAST A SLIGHT CHANCE OF RAIN.  WITH
HIGHS REACHING INTO THE LOW TO MID 90S...AND WITH SOME LOW LEVEL
MOISTURE STILL HANGING AROUND...THERE COULD BE A FEW SHOWERS OR
THUNDERSTORMS DURING THE AFTERNOON HOURS.

FOR TEMPS...MOS LOOKS REASONABLE SO WILL NOT DEVIATE.

HSV 89/68/90/71 092 422
BHM 90/70/93/71 093 422
MGM 92/71/94/72 094 532

.BHM...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 8:52 AM CDTSevere Thunderstorm WarningBMXMadison38 min
Aug 4, 2:18 PM CDTSevere Thunderstorm WarningBMXJefferson42 min
Aug 4, 3:15 PM CDTSevere Thunderstorm WarningBMXSt. Clair45 min
Aug 4, 4:07 PM CDTFlash Flood WarningBMXMadison3 hr

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.