Alert archive / Alabama / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 644, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Aug 11, 1998, 3:20 PM CDT for Coosa County, Alabama. It was in force for 30 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
- Aug 11, 1998, 3:20 PM CDT (20:20 UTC)
- Expired
- Aug 11, 1998, 3:50 PM CDT
- In force
- 30 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Coosa County, AL
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.3 hours before the alert went out and 57 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.
479 WUUS1 KBHM 112021 RRA SVRBHM ALC037-112050- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 320 PM CDT TUE AUG 11 1998 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... COOSA COUNTY... IN CENTRAL ALABAMA * UNTIL 350 PM CDT * AT 316 PM CDT... A SEVERE THUNDERSTORM PRODUCING LARGE HAIL WAS SHOWN...BY WEATHER RADAR IN SOUTHWESTERN COOSA COUNTY...JUST NORTH OF MITCHELL DAM. THE STORM WAS MOVING EAST AROUND 20 MPH. * THE SEVERE THUNDERSTORMS WILL AFFECT THE KELLYS CROSSROADS AND PENTONVILLE AREAS BEFORE 345 PM. DAMAGING WINDS AND LARGE HAIL 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, Aug 11, 9:45 AM CDT, 5 hours 35 minutes before
ALZ001>050-GAZ089-090-102-120-110225- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 945 AM CDT TUE AUG 11 1998 OVERNIGHT THUNDERSTORMS HAVE LEFT BEHIND A FEW OUTFLOW BOUNDRIES ACROSS NORTH AND CENTRAL ALABAMA. THESE...COMBINED WITH AN UNSTABLE AIRMASS AND ABUNDANT MOISTURE WILL ALLOW SCATTERED THUNDERSTORM DEVELOPMENT MAINLY ACROSS CENTRAL AND NORTHERN SECTIONS OF THE STATE. THOUGH THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS... HEAVY RAIN AND DEADLY LIGHTINIG...THESE ELEMENTS SHOULD REMAIN BELOW SEVERE LIMTS. THE HAZARDOUS WEATHER OUTLOOK FOR SOUTHWEST ALABAMA... SEE PRODUCT BHMSPSMOB. FOR SOUTHEAST ALABAMA... LOOK AT MIASPSTLH. FOR MORE WEATHER INFORMATION VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT HTTP://WWW.ACESAG.AUBURN.EDU/DEPARTMENT/NWS/
Special weather statement, Aug 11, 9:45 AM CDT, 5 hours 35 minutes before
ALZ001>050-GAZ089-090-102-120-110225- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 945 AM CDT TUE AUG 11 1998 OVERNIGHT THUNDERSTORMS HAVE LEFT BEHIND A FEW OUTFLOW BOUNDRIES ACROSS NORTH AND CENTRAL ALABAMA. THESE...COMBINED WITH AN UNSTABLE AIRMASS AND ABUNDANT MOISTURE WILL ALLOW SCATTERED THUNDERSTORM DEVELOPMENT MAINLY ACROSS CENTRAL AND NORTHERN SECTIONS OF THE STATE. THOUGH THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS... HEAVY RAIN AND DEADLY LIGHTINIG...THESE ELEMENTS SHOULD REMAIN BELOW SEVERE LIMTS. THE HAZARDOUS WEATHER OUTLOOK FOR SOUTHWEST ALABAMA... SEE PRODUCT BHMSPSMOB. FOR SOUTHEAST ALABAMA... LOOK AT MIASPSTLH. FOR MORE WEATHER INFORMATION VISIT OUR INTERNET SITE ON THE WORLD WIDE WEB AT HTTP://WWW.ACESAG.AUBURN.EDU/DEPARTMENT/NWS/
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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 |
| Aug 11, 5:55 PM CDT | Severe Thunderstorm Warning | BMX | Lamar | 35 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.