Alert archive / Alabama / Flash Flood Warnings in 1999
Flash Flood Warning 40, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at Jun 30, 1999, 3:26 PM CDT for Bibb County, Perry County, Alabama. It was in force for 119 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 30, 1999, 3:26 PM CDT (20:26 UTC)
- Expired
- Jun 30, 1999, 5:25 PM CDT
- In force
- 119 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
Counties Bibb County, AL, Perry County, AL
The radar
The Birmingham radar (KBMX), 57 km from the middle of the area, began a volume at 20:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.4 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
- 953 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1000 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 302031 FFWBHM ALC007-105-302225- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 326 PM CDT WED JUN 30 1999 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A... * FLASH FLOOD WARNING FOR... BIBB COUNTY... IN CENTRAL ALABAMA. NORTHERN PERRY COUNTY... IN CENTRAL ALABAMA. * UNTIL 525 PM CDT * AT 325 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF THUNDERSTORMS...WITH VERY HEAVY RAIN ACROSS BIBB COUNTY...AND THE NORTHERN PORTION OF PERRY COUNTY...MOVING SLOWLY EAST. * RADAR ESTIMATES OF RAINFALL SHOWED UP TO TWO INCHES OF RAIN HAS FALLEN ACROSS THE WARNING AREA SINCE THIS MORNING. AN ADDITIONAL 1 TO 2 INCH ES OF RAIN PER HOUR IS EXPECTED IN THIS AREA THROUGH THE NEXT 1 TO 2 HOURS. SATURATED GROUND WILL CAUSE THIS RAIN TO RUNOFF...INCREASING THE LIKELIHOOD OF FLASH FLOODING. 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, Jun 30, 11:25 AM CDT, 4 hours 1 minute before
ALZ001>050-GAZ089-090-102-120-011400- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 1125 AM CDT WED JUN 30 1999 A WEAK FRONTAL BOUNDARY STRETCHED ACROSS CENTRAL ALABAMA. LIFTED INDICES IN THE VICINITY OF THIS BOUNDARY WERE IN THE -6 TO -8 RANGE WITH CAPE VALUES NEAR 3000 J/KG. ISOLATED SEVERE THUNDERSTORMS WERE ALREADY FORMING ALONG THIS BOUNDARY AND MORE ISOLATED SEVERE THUNDERSTORMS WILL FORM THIS AFTERNOON...MAINLY IN CENTRAL AND SOUTH ALABAMA AHEAD OF THE DIFFUSE FRONTAL BOUNDARY. THE MAIN THREAT WILL BE FROM HEAVY RAIN AND FLOODING OF FLOOD PRONE AND URBANIZED AREAS AND DAMAGING THUNDERSTORM OUTFLOWS. HAIL UP TO 1 INCH IN DIAMETER MAY ALSO OCCUR BUT ONLY WITH THE STRONGEST STORMS AND IN VERY LOCALIZED AREAS. FOR 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.ACES.EDU/NWS/
Special weather statement, Jun 30, 11:25 AM CDT, 4 hours 1 minute before
ALZ001>050-GAZ089-090-102-120-011400- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 1125 AM CDT WED JUN 30 1999 A WEAK FRONTAL BOUNDARY STRETCHED ACROSS CENTRAL ALABAMA. LIFTED INDICES IN THE VICINITY OF THIS BOUNDARY WERE IN THE -6 TO -8 RANGE WITH CAPE VALUES NEAR 3000 J/KG. ISOLATED SEVERE THUNDERSTORMS WERE ALREADY FORMING ALONG THIS BOUNDARY AND MORE ISOLATED SEVERE THUNDERSTORMS WILL FORM THIS AFTERNOON...MAINLY IN CENTRAL AND SOUTH ALABAMA AHEAD OF THE DIFFUSE FRONTAL BOUNDARY. THE MAIN THREAT WILL BE FROM HEAVY RAIN AND FLOODING OF FLOOD PRONE AND URBANIZED AREAS AND DAMAGING THUNDERSTORM OUTFLOWS. HAIL UP TO 1 INCH IN DIAMETER MAY ALSO OCCUR BUT ONLY WITH THE STRONGEST STORMS AND IN VERY LOCALIZED AREAS. FOR 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.ACES.EDU/NWS/
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 10:24 AM CDT | Severe Thunderstorm Warning | BMX | Chilton, Coosa | 31 min |
| Jun 30, 10:57 AM CDT | Severe Thunderstorm Warning | BMX | Coosa | 33 min |
| Jun 30, 4:27 PM CDT | Severe Thunderstorm Warning | BMX | Autauga | 48 min |
| Jun 30, 4:50 PM CDT | Severe Thunderstorm Warning | BMX | Elmore, Montgomery | 60 min |
| Jun 30, 5:22 PM CDT | Flash Flood Warning | BMX | Autauga, Elmore, Montgomery | 2 hr |
| Jun 30, 5:29 PM CDT | Severe Thunderstorm Warning | BMX | St. Clair | 31 min |
Nearby
Flash Flood Warnings in Alabama, 1999Every flash flood 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; radar from the NEXRAD Level II archive.