Alert archive / Alabama / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 216, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 21, 1997, 2:49 PM CDT for Lauderdale County, Alabama. It was in force for 56 min. 2 reports 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 21, 1997, 2:49 PM CDT (19:49 UTC)
- Expired
- Apr 21, 1997, 3:45 PM CDT
- In force
- 56 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Lauderdale County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 21, 3:40 PM CDT | Hail 1.25 | Lexington, AL | Half dollar sized hail was covering the ground in Green Hill, in the northern part of the county. |
| Apr 21, 3:45 PM CDT | Hail 1.5 | Lexington, AL | Walnut sized hail was covering the ground in Lexington, in the northeast part of the county. |
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 21, 1:30 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 7.8 hours before the alert went out and 167 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1346 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 278 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 KHSV 211948 SVRHSV ALC077-212045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HUNTSVILLE AL 249 PM CDT MON APR 21 1997 THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 345 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH ALABAMA ...LAUDERDALE COUNTY AT 245 PM...RADAR SHOWED A STRONG THUNDERSTORM INCREASING IN INTENSITY OVER NORTHERN LAUDERDALE COUNTY...NEAR CLOVERDALE AND THREET. IT WAS MOVING TOWARDS THE EAST AT NEAR 30 MPH. 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 |
|---|---|---|---|---|
| Apr 21, 3:41 PM CDT | Severe Thunderstorm Warning | BMX | Limestone | 64 min |
| Apr 21, 4:03 PM CDT | Severe Thunderstorm Warning | BMX | Colbert, Lawrence | 57 min |
| Apr 21, 6:08 PM CDT | Severe Thunderstorm Warning | BMX | Lauderdale, Limestone | 67 min |
| Apr 21, 6:35 PM CDT | Severe Thunderstorm Warning | BMX | Madison | 55 min |
| Apr 21, 6:43 PM CDT | Severe Thunderstorm Warning | BMX | Marion | 62 min |
| Apr 21, 6:53 PM CDT | Severe Thunderstorm Warning | BMX | Lawrence, Morgan | 67 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.