Alert archive / Alabama / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 405, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jun 4, 1998, 6:26 PM CDT for Shelby County, Alabama. It was in force for 34 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
- Jun 4, 1998, 6:26 PM CDT (23:26 UTC)
- Expired
- Jun 4, 1998, 7:00 PM CDT
- In force
- 34 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Shelby County, AL
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 11.4 hours before the alert went out and 14 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
- 1942 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 615 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.4
The text
As transmitted, in the capitals the NWS used until 2016.
544 WUUS1 KBHM 042329 RRA SVRBHM ALC117-050000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 626 PM CDT THU JUN 4 1998 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SHELBY COUNTY... IN CENTRAL ALABAMA * UNTIL 700 PM CDT * AT 624 PM CDT... A SEVERE THUNDERSTORM WAS SHOWN...BY WEATHER RADAR OVER NORTHERN SHELBY COUNTY...NEAR HELENA AND PELHAM. THIS STORM WAS MOVING EAST AT 30 MPH...AND WILL AFFECT PELHAM AND THE REMAINDER OF EXTREME NORTHERN SHELBY COUNTY DURING THE NEXT 30 MINUTES DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 4, 6:08 PM CDT, 18 minutes before
ALZ001>010-014-016>018-020-042340- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 608 PM CDT THU JUN 4 1998 THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... IN ALABAMA ...LAUDERDALE... COLBERT... FRANKLIN... LAWRENCE... LIMESTONE ...MADISON... MORGAN... MARSHALL... JACKSON... DEKALB... WINSTON ...CULLMAN... BLOUNT... ETOWAH... CHEROKEE
Special weather statement, Jun 4, 6:08 PM CDT, 18 minutes before
ALZ001>010-014-016>018-020-042340- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 608 PM CDT THU JUN 4 1998 THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... IN ALABAMA ...LAUDERDALE... COLBERT... FRANKLIN... LAWRENCE... LIMESTONE ...MADISON... MORGAN... MARSHALL... JACKSON... DEKALB... WINSTON ...CULLMAN... BLOUNT... ETOWAH... CHEROKEE
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 12:40 PM CDT | Severe Thunderstorm Warning | BMX | Cullman | 35 min |
| Jun 4, 12:48 PM CDT | Severe Thunderstorm Warning | BMX | Blount | 47 min |
| Jun 4, 1:03 PM CDT | Severe Thunderstorm Warning | BMX | Cherokee | 47 min |
| Jun 4, 1:11 PM CDT | Severe Thunderstorm Warning | BMX | Lauderdale | 34 min |
| Jun 4, 1:21 PM CDT | Severe Thunderstorm Warning | BMX | Madison | 49 min |
| Jun 4, 1:32 PM CDT | Severe Thunderstorm Warning | BMX | Blount | 33 min |
| Jun 4, 1:37 PM CDT | Severe Thunderstorm Warning | BMX | Cullman | 48 min |
| Jun 4, 1:48 PM CDT | Severe Thunderstorm Warning | BMX | Etowah | 47 min |
| Jun 4, 1:52 PM CDT | Flash Flood Warning | BMX | Cullman | 3 hr |
| Jun 4, 2:21 PM CDT | Flash Flood Warning | BMX | Franklin | 2 hr |
| Jun 4, 2:24 PM CDT | Severe Thunderstorm Warning | BMX | Blount | 66 min |
| Jun 4, 2:29 PM CDT | Flash Flood Warning | BMX | Blount, Cherokee, Etowah | 3 hr |
| Jun 4, 2:53 PM CDT | Severe Thunderstorm Warning | BMX | Cherokee | 47 min |
| Jun 4, 3:47 PM CDT | Flash Flood Warning | BMX | Cullman, Winston | 2 hr |
| Jun 4, 4:39 PM CDT | Severe Thunderstorm Warning | BMX | Cherokee, Etowah | 46 min |
| Jun 4, 6:58 PM CDT | Severe Thunderstorm Warning | BMX | Shelby, Talladega | 32 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; the sounding from the Mesonet's radiosonde archive.