Alert archive / Alabama / Flash Flood Warnings in 1992
Flash Flood Warning 10, NWS Birmingham, AL
NWS Birmingham, AL issued this flash flood warning at Sep 5, 1992, 5:47 PM CDT for Jefferson County, Alabama. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Sep 5, 1992, 5:47 PM CDT (22:47 UTC)
- Expired
- Sep 5, 1992, 6:45 PM CDT
- In force
- 58 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Jefferson County, AL
The nearest sounding before it
Centreville/Bibb, AL (KCKL), launched 12:00Z, 10.8 hours before the alert went out and 78 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
- 875 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 551 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 052246 FFWBHM ALC073-052345- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 547 PM CDT SAT SEP 5 1992 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 645 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH ALABAMA ...SOUTHERN JEFFERSON COUNTY RADAR INDICATES A NEARLY STATINORARY BAND OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDING FROM THE SOUTHERN BIRMINGHAM SUBURBS THROUGH THE SOUTHERN AND EASTERN PARTS OF BIRMINGHAM AND INTO THE IRONDALE-TRUSSVILLAREAS. RAINFALL OF TWO OR MORE INCHES IN LESS THAN AN HOUR IS LIKELY TO HAVE FALLEN OVER THE REGION. ADDITIONAL RAINFALL MAY CAUSE SERIOUS FLASH FLOODING ESPECIALLY NEAR SMALL STREAMS...UNDERPASSES AND OTHER LOW-LYING AREAS. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
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, Sep 5, 5:23 PM CDT, 24 minutes before
ALZ004>009-011-052330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 522 PM CDT SAT SEP 5 1992 RADAR AT 520 PM INDICATED SHOWERS AND HEAVY THUNDERSTORMS OVER CENTRAL ALABAMA. THE STRONGEST STORMS WERE IN PERRY...SHELBY AND JEFFERSON COUNTIES. THE THUNDERSTORM OVER JEFFERSON COUNTY WAS AFFECTING THE SOUTHERN AND EASTERN SUBURBS OF THE BIRMINGHAM METROPOLITAN AREA. PERSONS IN THE VICINITY OF THESE STORMS CAN EXPECT VERY HEAVY RAIN...LIGHTNING... GUSTY WIND...AND POSSIBLY SMALL HIAL. THESE STORMS WERE MOVING NORTHEAST AT AROUND 20 MILES AN HOUR. OTHER STORMS WERE DEVELOPING OVER SOUTH CENTRAL ALABAMA AND WILL BE MOVING INTO THE CENTRAL ALABAMA DURING THE COUPLE HOURS. V THE STORMS SHOULD BEGIN TO WEAKEN AFTER SUNSET WITH ONLY ISOLATED THUNDERSHOWERS LEFT DURING THE EVENING HOURS. PERSONS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 6:33 PM CDT | Flash Flood Warning | BMX | Jackson | 72 min |
Nearby
Flash Flood Warnings in Alabama, 1992Every flash flood warning in 1992
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.