Alert archive / Alabama / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 647, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Aug 11, 1998, 5:55 PM CDT for Lamar County, Alabama. It was in force for 35 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
- Aug 11, 1998, 5:55 PM CDT (22:55 UTC)
- Expired
- Aug 11, 1998, 6:30 PM CDT
- In force
- 35 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Lamar County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 11, 6:02 PM CDT | Thunderstorm Wind 50 | Sulligent, AL | Trees and power lines were down in Sulligent. |
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, 10.9 hours before the alert went out and 139 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
- 116 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 1164 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- -7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
481 WUUS1 KBHM 112256 RRA SVRBHM ALC075-112330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 555 PM CDT TUE AUG 11 1998 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN AND CENTRAL LAMAR COUNTY... IN WEST CENTRAL ALABAMA * UNTIL 630 PM CDT * AT 554 PM CDT... A SEVERE THUNDERSTORM WAS SHOWN...BY WEATHER RADAR * THE SEVERE THUNDERSTORMS WILL BE NEAR...SULLIGENT BY 610. DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE 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 |
|---|---|---|---|---|
| Aug 11, 3:20 PM CDT | Severe Thunderstorm Warning | BMX | Coosa | 30 min |
| Aug 11, 4:10 PM CDT | Severe Thunderstorm Warning | BMX | Shelby | 45 min |
| Aug 11, 4:46 PM CDT | Severe Thunderstorm Warning | BMX | Pike | 64 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1998Every severe thunderstorm warning in 1998
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.