Alert archive / Alabama / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 253, NWS Birmingham, AL

April 27, 2000Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 27, 2000, 9:19 PM CDT for Shelby County, Alabama. It was in force for 26 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: Apr 27, 2000, 9:19 PM CDT (02:19 UTC)
Expired: Apr 27, 2000, 9:45 PM CDT
In force: 26 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Shelby County, AL

The radar

The Birmingham radar (KBMX), 14 km from the middle of the area, began a volume at 02:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.3 hours before the alert went out and 14 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1921 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: 182 m²/s²
0-3 km storm-relative helicity: 241 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 280219
SVRBHM
ALC117-280245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
919 PM CDT THU APR 27 2000

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

* SEVERE THUNDERSTORM WARNING FOR...
  SHELBY COUNTY IN CENTRAL ALABAMA...

* UNTIL 945 PM CDT.

* AT 919 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ALONG A LINE...EXTENDING FROM 15 MILES NORTHEAST
  OF LAKE PURDY TO 5 MILES NORTHWEST OF INVERNESS...MOVING SOUTHEAST
  AT 45 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  WILSONVILLE...VINCENT...MEADOWBROOK...LAKE PURDY...INVERNESS...
  HARPERSVILLE AND CHELSEA.

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.

Issued	Product	Office	Counties	Lasted
Apr 27, 7:00 PM CDT	Severe Thunderstorm Warning	BMX	Colbert, Franklin	30 min
Apr 27, 7:03 PM CDT	Severe Thunderstorm Warning	BMX	Morgan	27 min
Apr 27, 7:07 PM CDT	Severe Thunderstorm Warning	BMX	Cullman	53 min
Apr 27, 7:11 PM CDT	Tornado Warning	BMX	Cullman	49 min
Apr 27, 7:26 PM CDT	Severe Thunderstorm Warning	BMX	Franklin, Marion	64 min
Apr 27, 7:29 PM CDT	Severe Thunderstorm Warning	BMX	Limestone, Morgan	31 min
Apr 27, 7:39 PM CDT	Severe Thunderstorm Warning	BMX	Winston	51 min
Apr 27, 7:43 PM CDT	Severe Thunderstorm Warning	BMX	Marshall	47 min
Apr 27, 7:50 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee, DeKalb	25 min
Apr 27, 8:01 PM CDT	Severe Thunderstorm Warning	BMX	Walker	44 min
Apr 27, 8:06 PM CDT	Severe Thunderstorm Warning	BMX	Fayette	39 min
Apr 27, 8:18 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Cullman	57 min
Apr 27, 8:43 PM CDT	Tornado Warning	BMX	Blount	32 min
Apr 27, 8:46 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	44 min
Apr 27, 9:10 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair	35 min
Apr 27, 9:29 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Talladega	46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2000 Every 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; radar from the NEXRAD Level II archive.