Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 21, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Feb 15, 1990, 11:46 PM CST for Calhoun County, Etowah County, Alabama. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Feb 15, 1990, 11:46 PM CST (05:46 UTC)
- Expired
- Feb 16, 1990, 12:15 AM CST
- In force
- 29 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
Counties Calhoun County, AL, Etowah County, AL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Centreville/Bibb, AL (KCKL), launched 00:00Z, 5.8 hours before the alert went out and 163 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 160548 SVRBHM ALC015-055-160615- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 1146 PM CST THU FEB 15 1990 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1215 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH ALABAMA ...CALHOUN COUNTY...ETOWAH COUNTY AT 1145 PM RADAR INDICATED A SEVERE THUNDERSTORM IN SOUTHERN ETOWAH COUNTY NEAR THE CALHOUN COUNTY LINE. THE THUNDERSTORM WAS MOVING EAST AT 40 MILES AN HOUR. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNUING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 6:14 PM CST | Flash Flood Warning | BMX | Tuscaloosa | 3 hr |
| Feb 15, 6:14 PM CST | Flash Flood Warning | BMX | Shelby | 3 hr |
| Feb 15, 6:21 PM CST | Flash Flood Warning | BMX | DeKalb, Jackson, Marshall | 6 hr |
| Feb 15, 6:22 PM CST | Severe Thunderstorm Warning | BMX | Bibb, Perry | 58 min |
| Feb 15, 7:03 PM CST | Severe Thunderstorm Warning | BMX | Talladega | 42 min |
| Feb 15, 7:15 PM CST | Tornado Warning | BMX | Winston | 30 min |
| Feb 15, 7:50 PM CST | Flash Flood Warning | BMX | Calhoun, St. Clair | 3 hr |
| Feb 15, 8:25 PM CST | Flash Flood Warning | BMX | Lauderdale, Lawrence, Limestone, Madison, Morgan | 4 hr |
| Feb 15, 8:25 PM CST | Flash Flood Warning | BMX | Marshall | 4 hr |
| Feb 15, 8:42 PM CST | Severe Thunderstorm Warning | BMX | Colbert, Lauderdale | 63 min |
| Feb 15, 8:55 PM CST | Flash Flood Warning | BMX | Talladega | 5 hr |
| Feb 15, 8:55 PM CST | Flash Flood Warning | BMX | Hale | 5 hr |
| Feb 15, 9:02 PM CST | Flash Flood Warning | BMX | Greene, Tuscaloosa | 3 hr |
| Feb 15, 9:02 PM CST | Flash Flood Warning | BMX | Walker | 3 hr |
| Feb 15, 9:34 PM CST | Severe Thunderstorm Warning | BMX | Tuscaloosa | 41 min |
| Feb 15, 9:40 PM CST | Flash Flood Warning | BMX | Jefferson | 3 hr |
| Feb 15, 10:43 PM CST | Flash Flood Warning | BMX | Bibb, St. Clair, Shelby | 3 hr |
| Feb 16, 12:04 AM CST | Flash Flood Warning | BMX | Etowah | 3 hr |
| Feb 16, 12:04 AM CST | Flash Flood Warning | BMX | Walker | 3 hr |
| Feb 16, 12:32 AM CST | Flash Flood Warning | BMX | DeKalb, Jackson, Marshall | 4 hr |
| Feb 16, 12:35 AM CST | Flash Flood Warning | BMX | Blount, Cullman | 4 hr |
| Feb 16, 1:50 AM CST | Flash Flood Warning | BMX | Bibb, Perry, Shelby | 4 hr |
| Feb 16, 1:50 AM CST | Flash Flood Warning | BMX | St. Clair | 4 hr |
| Feb 16, 2:48 AM CST | Flash Flood Warning | BMX | Clay, Cleburne, Randolph | 4 hr |
| Feb 16, 2:48 AM CST | Flash Flood Warning | BMX | Chilton | 4 hr |
| Feb 16, 2:48 AM CST | Flash Flood Warning | BMX | Calhoun, Etowah, Talladega | 4 hr |
| Feb 16, 2:48 AM CST | Flash Flood Warning | BMX | Walker | 4 hr |
| Feb 16, 3:07 AM CST | Flash Flood Warning | BMX | Cherokee | 4 hr |
| Feb 16, 4:22 AM CST | Flash Flood Warning | BMX | Greene, Hale, Tuscaloosa | 4 hr |
| Feb 16, 5:06 AM CST | Flash Flood Warning | BMX | DeKalb, Jackson, Marshall | 4 hr |
| Feb 16, 5:29 AM CST | Flash Flood Warning | BMX | Bibb, Jefferson, Perry, Shelby | 3 hr |
| Feb 16, 5:29 AM CST | Flash Flood Warning | BMX | St. Clair | 3 hr |
| Feb 16, 6:36 AM CST | Flash Flood Warning | BMX | Calhoun, Cherokee, Cleburne, Etowah, Talladega | 3 hr |
| Feb 16, 6:36 AM CST | Flash Flood Warning | BMX | Clay, Randolph | 3 hr |
| Feb 16, 7:03 AM CST | Severe Thunderstorm Warning | BMX | Hale | 42 min |
| Feb 16, 8:13 AM CST | Severe Thunderstorm Warning | BMX | Randolph | 47 min |
| Feb 16, 8:54 AM CST | Flash Flood Warning | BMX | DeKalb, Jackson, Marshall | 4 hr |
Nearby
Severe Thunderstorm Warnings in Alabama, 1990Every severe thunderstorm warning in 1990
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.