Alert archive / Alabama / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 455, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jul 28, 1997, 4:50 PM CDT for Bibb County, Chilton County, Alabama. It was in force for 40 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 28, 1997, 4:50 PM CDT (21:50 UTC)
- Expired
- Jul 28, 1997, 5:30 PM CDT
- In force
- 40 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
Counties Bibb County, AL, Chilton County, AL
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 9.8 hours before the alert went out and 31 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
- 1583 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 879 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 282152 RRA SVRBHM ALC007-021-282230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 450 PM CDT MON JUL 28 1997 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL ALABAMA ...BIBB COUNTY...CHILTON COUNTY AT 450 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTHERN SHELBY COUNTY...BETWEEN MONTEVALLO AND ALABASTER. THIS STORM WAS MOVING TOWARD THE SOUTH-SOUTHWEST AT 15 TO 20 MPH...AND WILL MOVE INTO EXTREME EASTERN BIBB COUNTY AND NORTHERN CHILTON COUNTY BETWEEN 450 PM AND 530 PM. VERY STRONG WINDS AND HAIL ARE LIKELY WITH THIS STORM. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 9:26 PM CDT | Severe Thunderstorm Warning | BMX | Russell | 59 min |
| Jul 27, 9:53 PM CDT | Severe Thunderstorm Warning | BMX | Barbour | 47 min |
| Jul 28, 12:19 PM CDT | Severe Thunderstorm Warning | BMX | Marengo | 31 min |
| Jul 28, 12:32 PM CDT | Severe Thunderstorm Warning | BMX | Cherokee | 48 min |
| Jul 28, 1:50 PM CDT | Severe Thunderstorm Warning | BMX | Jackson | 40 min |
| Jul 28, 2:10 PM CDT | Severe Thunderstorm Warning | BMX | DeKalb, Jackson | 65 min |
| Jul 28, 2:33 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun | 57 min |
| Jul 28, 2:53 PM CDT | Severe Thunderstorm Warning | BMX | Madison | 52 min |
| Jul 28, 3:18 PM CDT | Severe Thunderstorm Warning | BMX | Morgan | 57 min |
| Jul 28, 3:40 PM CDT | Severe Thunderstorm Warning | BMX | Marshall | 65 min |
| Jul 28, 3:54 PM CDT | Severe Thunderstorm Warning | BMX | Randolph | 51 min |
| Jul 28, 3:58 PM CDT | Severe Thunderstorm Warning | BMX | Blount, Cullman | 47 min |
| Jul 28, 4:11 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 49 min |
| Jul 28, 4:15 PM CDT | Severe Thunderstorm Warning | BMX | Shelby | 60 min |
| Jul 28, 4:41 PM CDT | Severe Thunderstorm Warning | BMX | Tallapoosa | 64 min |
| Jul 28, 5:06 PM CDT | Severe Thunderstorm Warning | BMX | Coosa | 54 min |
| Jul 28, 5:28 PM CDT | Severe Thunderstorm Warning | BMX | Bibb, Chilton | 47 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1997Every severe thunderstorm warning in 1997
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.