Alert archive / Alabama / Flash Flood Warnings in 1998
Flash Flood Warning 61, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at Aug 12, 1998, 3:15 PM CDT for DeKalb County, Alabama. It was in force for 2 hr. 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 12, 1998, 3:15 PM CDT (20:15 UTC)
- Expired
- Aug 12, 1998, 5:15 PM CDT
- In force
- 2 hr
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County DeKalb County, AL
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.3 hours before the alert went out and 168 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
- 196 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1151 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 122015 FFWBHM ALC049-122215- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 315 PM CDT WED AUG 12 1998 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * FLASH FLOOD WARNING FOR... DEKALB COUNTY... IN NORTHERN ALABAMA * UNTIL 515 PM CDT * BETWEEN 2 AND 3 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN IN A BAND ALONG TOWN CREEK...FROM LAKEVIEW UPSTREAM TO SEQUOYAH CAVERNS. THERE WAS LITTLE MOVEMENT. * NEARLY STATIONARY THUNDERSTORMS ALONG TOWN CREEK WILL CAUSE RAPID RISES ON THE CREEK. TOWNS AND COMMUNITIES ALONG TOWN CREEK... ESPECIALLY FROM FYFFE DOWNSTREAM...SHOULD BE ON THE LOOKOUT FODR RAPIDLY RISING WATER. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!
What forecasters said that day
The local office's own words before this flash flood 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 12, 10:33 AM CDT, 4 hours 42 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 1033 AM CDT WED AUG 12 1998 AN UPPER LEVEL DISTURBANCE COMBINED WITH ABUNDANT LOW LEVEL MOSITURE ALLOWED WIDESPREAD THUNDERSTORMS TO BREAK OUT OVER THE NORTHERN HALF OF THE STATE. SLOW STORM MOVEMENT...DUE TO LIGHT UPPER LEVEL STEERING ALLOWED THE STORMS TO PRODUCE COPIOUS AMOUNTS OF RAINFALL OVER CENTRAL ALABAMA. AS THE DAY WEARS ON THE MAIN THREAT FROM THESE STORMS WILL BE FLASH FLOODING. ADDITIONAL STORM DEVELOPMENT LATE THIS AFTERNOON...ESPECAILLY ESPECIALLY OVER RAIN SOAKED AREAS WILL ADD TO THE FLASH FLOOD THREAT. 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 12, 10:33 AM CDT, 4 hours 42 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 1033 AM CDT WED AUG 12 1998 AN UPPER LEVEL DISTURBANCE COMBINED WITH ABUNDANT LOW LEVEL MOSITURE ALLOWED WIDESPREAD THUNDERSTORMS TO BREAK OUT OVER THE NORTHERN HALF OF THE STATE. SLOW STORM MOVEMENT...DUE TO LIGHT UPPER LEVEL STEERING ALLOWED THE STORMS TO PRODUCE COPIOUS AMOUNTS OF RAINFALL OVER CENTRAL ALABAMA. AS THE DAY WEARS ON THE MAIN THREAT FROM THESE STORMS WILL BE FLASH FLOODING. ADDITIONAL STORM DEVELOPMENT LATE THIS AFTERNOON...ESPECAILLY ESPECIALLY OVER RAIN SOAKED AREAS WILL ADD TO THE FLASH FLOOD THREAT. 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 12, 9:17 AM CDT | Flash Flood Warning | BMX | Walker | 2 hr |
| Aug 12, 9:37 AM CDT | Flash Flood Warning | BMX | Jefferson | 2 hr |
Nearby
Flash Flood Warnings in Alabama, 1998Every flash flood 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.