Alert archive / Alabama / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 271, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 28, 1997, 5:02 PM CDT for DeKalb County, Alabama. It was in force for 58 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
- Apr 28, 1997, 5:02 PM CDT (22:02 UTC)
- Expired
- Apr 28, 1997, 6:00 PM CDT
- In force
- 58 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County DeKalb County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 28, 6:05 PM CDT | Hail 0.75 | Ft Payne, AL | Three-quarter inch hail was reported in downtown Fort Payne. |
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 28, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 10.0 hours before the alert went out and 168 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
- 263 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 504 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
654 WUUS1 KHSV 282201 RRA SVRHSV ALC049-282300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HUNTSVILLE AL 502 PM CDT MON APR 28 1997 THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH ALABAMA ...DEKALB COUNTY SPOTTERS REPORTED DIME TO QUARTER SIZE HAIL ON IH59 NEAR COLLINSVILLE. IT WAS MOVING TOWARDS THE NORTHEAST AT 20 MPH. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DONT 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 |
|---|---|---|---|---|
| Apr 28, 1:10 PM CDT | Severe Thunderstorm Warning | BMX | St. Clair | 30 min |
| Apr 28, 1:46 PM CDT | Severe Thunderstorm Warning | BMX | Talladega | 34 min |
| Apr 28, 2:10 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun | 60 min |
| Apr 28, 2:52 PM CDT | Severe Thunderstorm Warning | BMX | Etowah, St. Clair | 63 min |
| Apr 28, 3:53 PM CDT | Severe Thunderstorm Warning | BMX | Cherokee | 62 min |
| Apr 28, 4:16 PM CDT | Severe Thunderstorm Warning | BMX | Blount | 49 min |
| Apr 28, 4:46 PM CDT | Severe Thunderstorm Warning | BMX | Etowah | 64 min |
| Apr 28, 4:49 PM CDT | Severe Thunderstorm Warning | BMX | Marshall | 56 min |
| Apr 28, 4:56 PM CDT | Severe Thunderstorm Warning | BMX | Cullman, Winston | 64 min |
| Apr 28, 5:13 PM CDT | Severe Thunderstorm Warning | BMX | Limestone, Madison | 62 min |
| Apr 28, 5:21 PM CDT | Severe Thunderstorm Warning | BMX | St. Clair | 49 min |
| Apr 28, 5:40 PM CDT | Severe Thunderstorm Warning | BMX | Blount | 65 min |
| Apr 28, 5:51 PM CDT | Tornado Warning | BMX | DeKalb | 69 min |
| Apr 28, 6:08 PM CDT | Severe Thunderstorm Warning | BMX | St. Clair | 32 min |
| Apr 28, 6:15 PM CDT | Flash Flood Warning | BMX | Etowah | 2 hr |
| Apr 28, 6:15 PM CDT | Severe Thunderstorm Warning | BMX | Marshall | 60 min |
| Apr 28, 6:27 PM CDT | Severe Thunderstorm Warning | BMX | Etowah | 48 min |
| Apr 28, 6:31 PM CDT | Tornado Warning | BMX | Marshall | 59 min |
| Apr 28, 6:44 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun | 66 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.