Alert archive / Alabama / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 9, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jan 17, 1999, 8:57 PM CST for Lauderdale County, Alabama. It was in force for 63 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
- Jan 17, 1999, 8:57 PM CST (02:57 UTC)
- Expired
- Jan 17, 1999, 10:00 PM CST
- In force
- 63 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Lauderdale County, AL
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 3.0 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
- 687 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 352 m²/s²
- 0-3 km storm-relative helicity
- 343 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.9
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KBHM 180258 RRA SVRBHM ALC077-180400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 857 PM CST SUN JAN 17 1999 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LAUDERDALE COUNTY... IN NORTHERN ALABAMA * UNTIL 1000 PM CST * AT 855 PM CST... A SEVERE THUNDERSTORM PRODUCING LARGE HAIL WAS SHOWN...BY NATIONAL WEATHER SERVICE DOPPLER RADAR...MOVING ACROSS NORTHERN LAUDERDALE COUNTY. THIS STORM IS MOVING OFF TO THE EAST NORTHEAST AT NEAR 30 MILES PER HOUR. GOLFBALL SIZED HAIL WAS REPORTED WITH THIS STORM TO THE NORTH OF WATERLOO. THIS EXTENDS THE PREVIOUS SEVERE THUNDERSTORM WARNING. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS THIS THUNDERSTORM IS CAPABLE OF PRODUCING EXTREMELY LARGE HAIL WHICH MAY CAUSE SEVERE DAMAGE TO PROPERTY AND SERIOUS INJURY TO PEOPLE AND LIVESTOCK. DAMAGING WINDS AND TORRENTIAL RAIN ARE ALSO LIKELY WITH THIS STORM. MOVE TO A STURDY BUILDING AND STAY AWAY FROM WINDOWS. &
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 7:57 PM CST | Severe Thunderstorm Warning | BMX | Lauderdale | 63 min |
| Jan 17, 11:12 PM CST | Severe Thunderstorm Warning | BMX | Franklin | 48 min |
| Jan 17, 11:16 PM CST | Severe Thunderstorm Warning | BMX | Lawrence | 64 min |
| Jan 17, 11:27 PM CST | Severe Thunderstorm Warning | BMX | Lamar | 48 min |
| Jan 17, 11:29 PM CST | Severe Thunderstorm Warning | BMX | Limestone | 46 min |
| Jan 17, 11:47 PM CST | Severe Thunderstorm Warning | BMX | Marion | 48 min |
| Jan 17, 11:58 PM CST | Severe Thunderstorm Warning | BMX | Madison | 32 min |
| Jan 18, 12:07 AM CST | Severe Thunderstorm Warning | BMX | Jackson | 48 min |
| Jan 18, 12:45 AM CST | Severe Thunderstorm Warning | BMX | Cullman | 50 min |
| Jan 18, 12:56 AM CST | Severe Thunderstorm Warning | BMX | Marshall, Morgan | 49 min |
| Jan 18, 1:12 AM CST | Severe Thunderstorm Warning | BMX | Winston | 33 min |
| Jan 18, 1:33 AM CST | Severe Thunderstorm Warning | BMX | Pickens | 32 min |
| Jan 18, 1:38 AM CST | Severe Thunderstorm Warning | BMX | DeKalb | 47 min |
| Jan 18, 1:40 AM CST | Severe Thunderstorm Warning | BMX | Cullman | 50 min |
| Jan 18, 1:44 AM CST | Severe Thunderstorm Warning | BMX | Walker | 46 min |
| Jan 18, 1:50 AM CST | Severe Thunderstorm Warning | BMX | Tuscaloosa | 45 min |
| Jan 18, 2:00 AM CST | Severe Thunderstorm Warning | BMX | Blount | 45 min |
| Jan 18, 2:18 AM CST | Severe Thunderstorm Warning | BMX | Jefferson | 47 min |
| Jan 18, 2:29 AM CST | Severe Thunderstorm Warning | BMX | Etowah | 46 min |
| Jan 18, 2:34 AM CST | Severe Thunderstorm Warning | BMX | Tuscaloosa | 21 min |
| Jan 18, 2:38 AM CST | Severe Thunderstorm Warning | BMX | Marshall | 47 min |
| Jan 18, 3:26 AM CST | Severe Thunderstorm Warning | BMX | Cherokee | 49 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1999Every severe thunderstorm warning in 1999
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.