Alert archive / Alabama / Flash Flood Warnings in 1999
Flash Flood Warning 43, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at Jul 2, 1999, 3:26 PM CDT for Jefferson County, Alabama. It was in force for 89 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
- Jul 2, 1999, 3:26 PM CDT (20:26 UTC)
- Expired
- Jul 2, 1999, 4:55 PM CDT
- In force
- 89 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Jefferson County, AL
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.4 hours before the alert went out and 43 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
- 1555 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 022027 FFWBHM ALC073-022155- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 326 PM CDT FRI JUL 2 1999 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A... * FLASH FLOOD WARNING FOR... EASTERN JEFFERSON COUNTY... IN CENTRAL ALABAMA. * UNTIL 455 PM CDT * AT 325 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN IN EXTREME EASTERN JEFFERSON COUNTY...NEAR TRUSSVILLE. THIS STORM HAS SHOWN LITTLE MOVEMENT... AND RADAR ESTIMATES OF RAINFALL SHOW THAT AS MUCH AS 3 INCHES OF RAIN HAS FALLEN IN THIS AREA. MORE HEAVY RAIN IS EXPECTED WITH THIS STATIONARY THUNDERSTORM...WHICH WILL INCREASE THE FLOO>DING POTENTIAL. 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, Jul 2, 9:41 AM CDT, 5 hours 45 minutes before
ALZ001>050-GAZ089-090-102-120-022000- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 941 AM CDT FRI JUL 2 1999 THE AIR MASS OVER THE AREA REMAINS MOIST AND UNSTABLE THIS MORNING. PRECIPITATION HAS ALREADY AFFECTED PARTS OF THE TENNESSEE VALLEY...AND MORE SHOWERS WERE DEVELOPING BETWEEN HUNTSVILLE AND BIRMINGHAM. THE BEST CHANCE OF THUNDERSTORMS TODAY WILL BE OVER THE NORTHERN QUARTER OF ALABAMA...WITH A SLIGHT CHANCE ELSEWHERE. THE MORNING SOUNDING INDICATES THUNDERSTORMS WILL BE CAPABLE OF PRODUCING VERY STRONG DOWNDRAFTS...OR MICROBURSTS. EXPECT STRONG GUSTY WINDS IN AND AROUND THUNDERSTORMS THIS AFTERNOON...AS SOME OF THESE STORMS MAY BE CAPABLE OF KNOCKING OVER A FEW TREES. STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD REMAIN ALERT FOR CHANGING WEATHER CONDITIONS...AND MONITOR NOAA WEATHER RADIO OR LOCAL TV AND RADIO...FOR POSSIBLE WARNINGS THIS AFTERNOONl. 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, Jul 2, 9:41 AM CDT, 5 hours 45 minutes before
ALZ001>050-GAZ089-090-102-120-022000- HAZARDOUS WEATHER OUTLOOK FOR NORTH/CENTRAL AL AND WEST CENTRAL GA NATIONAL WEATHER SERVICE BIRMINGHAM AL 941 AM CDT FRI JUL 2 1999 THE AIR MASS OVER THE AREA REMAINS MOIST AND UNSTABLE THIS MORNING. PRECIPITATION HAS ALREADY AFFECTED PARTS OF THE TENNESSEE VALLEY...AND MORE SHOWERS WERE DEVELOPING BETWEEN HUNTSVILLE AND BIRMINGHAM. THE BEST CHANCE OF THUNDERSTORMS TODAY WILL BE OVER THE NORTHERN QUARTER OF ALABAMA...WITH A SLIGHT CHANCE ELSEWHERE. THE MORNING SOUNDING INDICATES THUNDERSTORMS WILL BE CAPABLE OF PRODUCING VERY STRONG DOWNDRAFTS...OR MICROBURSTS. EXPECT STRONG GUSTY WINDS IN AND AROUND THUNDERSTORMS THIS AFTERNOON...AS SOME OF THESE STORMS MAY BE CAPABLE OF KNOCKING OVER A FEW TREES. STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD REMAIN ALERT FOR CHANGING WEATHER CONDITIONS...AND MONITOR NOAA WEATHER RADIO OR LOCAL TV AND RADIO...FOR POSSIBLE WARNINGS THIS AFTERNOONl. 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 |
|---|---|---|---|---|
| Jul 2, 4:02 PM CDT | Flash Flood Warning | BMX | Etowah | 93 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.