Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 68, NWS Birmingham, AL

April 3, 2001Blount County, Etowah County, St. Clair County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 3, 2001, 5:20 AM CDT for Blount County, Etowah County, St. Clair County, Alabama. It was in force for 40 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Apr 3, 2001, 5:20 AM CDT (10:20 UTC)
Expired: Apr 3, 2001, 6:00 AM CDT
In force: 40 min
Issued by: NWS Birmingham, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Blount County, AL, Etowah County, AL, St. Clair County, AL

What was reported inside it

Time	Report	Where	Remark
Apr 3, 5:35 AM CDT	Hail 0.75	Oneonta, AL	Dime size hail was reported in Oneonta.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 3, 5:00 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 10.3 hours before the alert went out and 92 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: 3218 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 261 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.

150 
WUUS54 KBMX 031021
SVRBHM
ALC009-055-115-031100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
520 AM CDT TUE APR 3 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BLOUNT COUNTY IN ALABAMA
  ETOWAH COUNTY IN ALABAMA
  ST. CLAIR COUNTY IN ALABAMA

* UNTIL 600 AM CDT

* AT 514 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES SOUTH OF CLEVELAND...MOVING EAST AT 35
  MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...RAINBOW 
CITY...ONEONTA...STEELE AND ATTALLA.

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

LAT...LON 3400 8662 3382 8662 3379 8609 3411 8600

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 5:03 AM CDT	Severe Thunderstorm Warning	BMX	Franklin, Marion	27 min
Apr 3, 5:19 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Dallas	41 min
Apr 3, 5:28 AM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	47 min
Apr 3, 5:54 AM CDT	Severe Thunderstorm Warning	BMX	Franklin	51 min
Apr 3, 6:13 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Etowah	32 min
Apr 3, 6:33 AM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	27 min
Apr 3, 6:41 AM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Cleburne	34 min
Apr 3, 6:42 AM CDT	Severe Thunderstorm Warning	BMX	Dallas, Lowndes	48 min
Apr 3, 7:16 AM CDT	Severe Thunderstorm Warning	BMX	DeKalb	29 min
Apr 3, 7:17 AM CDT	Severe Thunderstorm Warning	BMX	Cullman, Winston	28 min
Apr 3, 7:21 AM CDT	Severe Thunderstorm Warning	BMX	Walker	24 min
Apr 3, 7:31 AM CDT	Severe Thunderstorm Warning	BMX	Elmore, Montgomery	29 min
Apr 3, 7:38 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson	52 min
Apr 3, 7:40 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Cullman	35 min
Apr 3, 8:11 AM CDT	Severe Thunderstorm Warning	BMX	Lawrence	19 min
Apr 3, 8:18 AM CDT	Severe Thunderstorm Warning	BMX	Walker	27 min
Apr 3, 8:54 AM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Talladega	36 min
Apr 3, 9:13 AM CDT	Severe Thunderstorm Warning	BMX	Clay	32 min
Apr 3, 9:18 AM CDT	Severe Thunderstorm Warning	BMX	Dallas	42 min
Apr 3, 9:26 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson	34 min
Apr 3, 10:00 AM CDT	Severe Thunderstorm Warning	BMX	Dallas	30 min
Apr 3, 10:32 AM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Talladega	28 min
Apr 3, 3:05 PM CDT	Flash Flood Warning	BMX	Jefferson, St. Clair, Walker	3 hr
Apr 3, 3:28 PM CDT	Flash Flood Warning	BMX	Clay, Talladega	3 hr
Apr 3, 3:41 PM CDT	Tornado Warning	BMX	Clay, Talladega	34 min
Apr 3, 3:51 PM CDT	Flash Flood Warning	BMX	Marion, Winston	3 hr
Apr 3, 4:11 PM CDT	Tornado Warning	BMX	Bibb, Tuscaloosa	49 min
Apr 3, 4:22 PM CDT	Tornado Warning	BMX	Talladega	23 min
Apr 3, 4:25 PM CDT	Tornado Warning	BMX	Shelby	35 min
Apr 3, 4:34 PM CDT	Tornado Warning	BMX	Clay	26 min
Apr 3, 4:58 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton	47 min
Apr 3, 5:26 PM CDT	Flash Flood Warning	BMX	Blount, Cullman	3 hr
Apr 3, 5:33 PM CDT	Severe Thunderstorm Warning	BMX	Coosa	37 min
Apr 3, 5:39 PM CDT	Flash Flood Warning	BMX	Chambers, Randolph, Tallapoosa	3 hr
Apr 3, 5:48 PM CDT	Flash Flood Warning	BMX	Clay, Jefferson, St. Clair, Shelby, Talladega, Walker	3 hr
Apr 3, 6:49 PM CDT	Flash Flood Warning	BMX	Winston	101 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2001 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.