Alert archive / Alabama / Flash Flood Warnings in 1991
Flash Flood Warning 7, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at May 10, 1991, 4:45 PM CDT for Baldwin County, Mobile County, Alabama. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- May 10, 1991, 4:45 PM CDT (21:45 UTC)
- Expired
- May 10, 1991, 7:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
Counties Baldwin County, AL, Mobile County, AL
The nearest sounding before it
Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 9.8 hours before the alert went out and 143 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
- 1564 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 470 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 203 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 KMOB 102146 FFWMOB ALC003-097-110045- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOBILE AL 445 PM CDT FRI MAY 10 1991 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ALABAMA ...BALDWIN COUNTY...MOBILE COUNTY AT 440 PM HEAVY RAIN CONTINUES TO MOVE FROM WEST TO EAST ACROSS MOBILE AND BALDWIN COUNTIES. THE NATIONAL WEATHER SERVICE IN MOBILE PICKED UP ABOUT AN INCH OF RAIN IN 35 MINUTES WITH ADDITIONAL HEAVY RAIN JUST TO THE WEST. THIS SYSTEM IS PART OF THE SAME SYSTEM THAT DUMPED OVER 4 INCHES OF RAIN IN GEORGE COUNTY EARLIER THIS AFTERNOON. THE RAIN OF THE LAST SEVERAL DAYS HAS BROUGHT THE AREA DRAINAGE DITCHES TO NEAR SATURATION. ADDITIONAL RAIN WILL ONLY COMPOUND THE PROBLEM MOST DEATHS IN FLASH FLOODING 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.
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, May 10, 2:30 PM CDT, 2 hours 15 minutes before
ALZ013-016-015-MSZ013-014-102130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 230 PM CDT FRI MAY 10 1991 ...ONCE AGAIN HEAVY RAINFALL COVERING PARTS OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA... AT 225 PM CDT MOBILE RADAR SHOWED A LARGE AREA OF SHOWERS WITH SCATTERED STRONG THUNDERSTORMS OVER EXTREME SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THE STRONGEST STORMS WERE FROM SOUTHEAST OF WIGGINS MISSISSIPPI TO SOUTHEAST OF CITRONELLE ALABAMA. THE STORMS WERE TRACKING EAST AT 20 MPH. RESIDENTS IN OR NEAR THE STRONGER STORMS CAN EXPECT HEAVY RAINFALL... CAUSING STREET AND FLOOD PRONE AREAS TO FLOOD BRIEFLY AS THESE STORMS MOVE SLOWLY EAST ACROSS THE AREA FOR THE NE XT COUPLE HOURS.
Special weather statement, May 10, 4:15 PM CDT, 30 minutes before
ALZ013-016-015-MSZ013-014-102330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 415 PM CDT FRI MAY 10 1991 ...FLASH FLOOD WARNING IS IN EFFECT FOR GEORGE COUNTY OF SOUTHWEST MISSISSIPPI UNTIL 6 PM... AT 410 PM CDT MOBILE RADAR SHOWED A LARGE AREA OF SHOWERS WITH SCATTERED STRONG THUNDERSTORMS OVER EXTREME SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THE STRONGEST STORMS WERE MOVING INTO THE WESTERN PART OF MOBILE. THE STORMS WERE TRACKING EAST AT 20 MPH. MOTORISTS AND RESIDENTS IN OR NEAR THE STRONGER STORMS CAN EXPECT HEAVY RAINFALL... CAUSING STREET AND FLOOD PRONE AREAS TO FLOOD BRIEFLY AS THE STORMS MOVE TO THE EAST SLOWLY FOR THE NEXT COUPLE HOURS.
Special weather statement, May 10, 4:33 PM CDT, 12 minutes before
FLZ001-002-003-004-ALZ010-013-014-015-016-017-018-MSZ012-013-014- 102230- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 430 PM CDT FRI MAY 10 1991 AT 430 PM CDT...NUMEROUS STRONG THUNDERSTORMS SPREAD FROM ALONG THE APALACHICOLA RIVER NORTHWEST TO DOTHAN THEN WEST ACROSS SOUTH ALABAMA THROUGH MOBILE INTO SOUTHEAST MISSISSIPPI. THE HEAVIER RAIN WAS NEAR MOBILE AND SOUTH OF DOTHAN. AS THE THUNDERSTORMS DEVELOP SOUTHEAST INTO THE WEST FLORIDA PANHANDLE BE PREPARED FOR LOCALLY HEAVY RAIN WHICH MAY CAUSE SOME BRIEF FLOODING OF STREETS...DITCHES AND LOW-LYING AREAS DURING AND SHORTLY AFTER THE THUNDERSTORMS END. ALSO...THERE WILL BE FREQUENT LIGHTNING...STRONG WINDS AND THE POSSIBILITY OF HAIL. THE INDIVIDUAL THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MILES AN HOUR.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 3:36 PM CDT | Severe Thunderstorm Warning | MOB | Butler, Lowndes | 69 min |
Nearby
Flash Flood Warnings in Alabama, 1991Every flash flood warning in 1991
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.