Alert archive / Alabama / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 421, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jul 9, 1997, 5:25 PM CDT for Bibb County, Alabama. It was in force for 50 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 9, 1997, 5:25 PM CDT (22:25 UTC)
- Expired
- Jul 9, 1997, 6:15 PM CDT
- In force
- 50 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Bibb County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 5:32 PM CDT | Thunderstorm Wind 50 | West Blocton, AL | Trees were down along CR 24 and CR 27 near West Blocton. |
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 nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 10.4 hours before the alert went out and 38 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
- 276 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
558 WUUS1 KBHM 092226 RRA SVRBHM ALC007-092315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 525 PM CDT WED JUL 9 1997 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL ALABAMA ...BIBB COUNTY AT 525 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM NEAR WEST BLOCTON. THE STORM WAS MOVING SOUTH AT 15 MPH. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 7:09 PM CDT | Severe Thunderstorm Warning | BMX | Hale | 51 min |
| Jul 9, 2:44 PM CDT | Severe Thunderstorm Warning | BMX | Walker | 46 min |
| Jul 9, 3:30 PM CDT | Severe Thunderstorm Warning | BMX | Jefferson, Tuscaloosa | 45 min |
| Jul 9, 4:08 PM CDT | Severe Thunderstorm Warning | BMX | Winston | 37 min |
| Jul 9, 4:16 PM CDT | Severe Thunderstorm Warning | BMX | Tuscaloosa | 44 min |
| Jul 9, 4:32 PM CDT | Severe Thunderstorm Warning | BMX | Walker | 58 min |
| Jul 9, 5:31 PM CDT | Severe Thunderstorm Warning | BMX | Fayette | 44 min |
| Jul 9, 6:07 PM CDT | Severe Thunderstorm Warning | BMX | Lamar, Marion | 48 min |
| Jul 9, 6:58 PM CDT | Severe Thunderstorm Warning | BMX | Tuscaloosa | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.