Alert archive / Alabama / Flash Flood Warnings in 1991

Flash Flood Warning 1, NWS Mobile, AL

March 1, 1991Geneva County, Houston County, Alabama

NWS Mobile, AL issued this flash flood warning at Mar 1, 1991, 10:33 PM CST for Geneva County, Houston County, Alabama. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Mar 1, 1991, 10:33 PM CST (04:33 UTC)
Expired
Mar 2, 1991, 2:30 AM CST
In force
4 hr
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Geneva County, AL, Houston County, AL

The nearest sounding before it

Apalachicola Mun, FL (KAQQ), launched 00:00Z, 4.6 hours before the alert went out and 164 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.

Skew-T log-pSkew-T log-p diagram, Apalachicola Mun, FL at 00:00Z on 1991-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 590 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Apalachicola Mun, FL at 00:00Z on 1991-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
590 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
823 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
390 m²/s²
Significant tornado parameter
0.9
Supercell composite
10.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Mar 1, 6:08 PM CST, 4 hours 25 minutes before
FLZ001>004-020100-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENSACOLA FL
605 PM CST FRI MAR 1 1991

...A TORNADO WATCH NUMBER 20 IS IN EFFECT UNTIL 1000 PM CST FOR BAY AND
WASHINGTON COUNTIES IN FLORIDA...AND THE COASTAL WATERS OF BAY COUNTY..

THE TORNADO WATCH NUMBER 18 FOR THE WEST PART OF THE FLORIDA PANHANDLE
EXPIRED AT 600 PM.

THUNDERSTORMS...SOME WITH HEAVY RAIN...CONTINUE OVER THE WEST PART OF
THE PANHANDLE. THE THUNDERSTORMS WERE MOVING INTO THE COASTLINE FROM
PENSACOLA TO DESTIN.
A LARGE AREA OF RAIN WAS OVER MOST OF THE FLORIDA PANHANDLE...SOUTH
ALABAMA...SOUTHEAST MISSISSIPPI...AND THE ADJOINING COASTAL WATERS.

THE THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY DOWNPOrURS...FREQUENT
LIGHTNING...VARIABLE GUSTY WINDS...AND POSSIBLE HAIL.
FLOODING OF STREETS AND OTHER POOR DRAINAGE AREAS MAY BE EXPECTED...
ESPECIALLY IN THE MORE FLOOD PRONE AREAS.
Special weather statement, Mar 1, 6:33 PM CST, 4 hours before
FLZ001>004-020135-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
635 PM CST FRI MAR 1 1991

...A TORNADO WATCH NUMBER 20 IS IN EFFECT UNTIL 1100 PM CST FOR BAY AND
WASHINGTON COUNTIES IN FLORIDA...AND THE COASTAL WATERS OF BAY COUNTY..

...AT 630 PM CST...A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN WAS
ALONG THE COAST JUST SOUTH OF DESTIN WHILE ANOTHER CLUSTER WAS JUST
SOUTH AND SOUTHEAST OF PENSACOLA.

A LA7RGE PATCH OF RAIN AND THUNDERSTORMS COVERED MUCH OF SOUTH ALABAMA
...THE FLORIDA PANHANDLE AND THE ADJACENT COASTAL WATERS FROM DESTIN
WEST TO LOUISIANA.

MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR.
Special weather statement, Mar 1, 7:52 PM CST, 2 hours 41 minutes before
FLZ001>004-020235-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
735 PM CST FRI MAR 1 1991

...TORNADO WATCH NUMBER 20 IS IN EFFECT UNTIL 1100 PM CST FOR BAY AND
WASHINGTON COUNTIES IN FLORIDA...AND THE COASTAL WATERS OF BAY COUNTY..

AT 728 PM CST...A BAND OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED
FROM JUST SOUTH OF MILTON SOUTHWEST BETWEEN PENSACOLA AND NAVARRE...
AND INTO THE GULF 80 MILES SOUTHWEST OF PENSACOLA.
ELSEWHERE...A LARGE AREA OF RAIN MIXED WITH SCATTERED THUNDERSTORMS
COVERED MOST OF THE FLORIDA PANHANDLE...SOUTH ALABAMA...SOUTHEAST
MISSISSIPPI...AND THE ADJOINING GULF.
THE THUNDERSTORMS WERE MAINLY ALONG THE COAST AND COASTAL WATERS FROM
PENSACOLA TO FREEPORT.

THE THUNDERSTORMS ARE CAPABLE OF PRODUCING PERIODS OF HEAVY DOWNPOURS
...FREQUENT LIGHTNING...VARIABLE GUSTY WINDS...POSSIBLE...AND FLOODING
OF STREETS AND OTHER POOR DRAINAGE AREAS.
PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS.
Special weather statement, Mar 1, 8:39 PM CST, 1 hour 54 minutes before
FLZ001>004-020335-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
835 PM CST FRI MAR 1 1991

...TORNADO WATCH NUMBER 20 IS IN EFFECT UNTIL 1100 PM CST FOR BAY AND
WASHINGTON COUNTIES IN FLORIDA...AND THE COASTAL WATERS OF BAY COUNTY..

AT 827 PM CST...A LARGE AREA OF RAIN MIXED WITH SCATTERED THUNDERSTORMS
...SOME WITH VERY HEAVY RAIN...WAS OVER MOST OF THE FLORIDA PANHANDLE
...SOUTH ALABAMA...AND THE ADJOINING GULF.
THE THUNDERSTORMS WITH THE HEAVIER RAINS WERE ALONG THE COAST AND
COASTAL WATERS BETWEEN PENSACOLA AND FORT WALTON...AND BETWEEN DESTIN
AND PANAMA CITY.
THE RAIN AREA WAS SPREADING SLOWLY EAST...WITH THE INDIVIDUAL THUNDER-
STORMS MOVING NORTHEAST AT 35 MILES AN HOUR.

THE THUNDERSTORMS ARE CAPABLE OF PRODUCING PERIODS OF HEAVY DOWNPOURS
...FREQUENT LIGHTNING...VARIABLE GUSTY WINDS...AND POSSIBLE HAIL.
SOME FLOODING OF STREETS AND OTHER POOR DRAINAGE AREAS MAY BE EXPECTED
...ESPECIALLY IN THE MORE FLOOD PRONE AREAS.
PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS.
WATER NEAR CREEKS AND LOW AREAS WILL BE DIFFICULT TO SEE AT NIGHT.
Special weather statement, Mar 1, 9:05 PM CST, 1 hour 28 minutes before
FLZ001>004-020400-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENSACOLA FL
900 PM CST FRI MAR 1 1991

THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM AROUND THE FORT WALTON
AREA SOUTHWEST TO 75 MILES SOUTHWEST OF PENSACOLA...AND OTHERS MOVING
INLAND OVER BAY COUNTY BETWEEN FREEPORT AND PANAMA CITY AND EXTENDED
INTO SOUTHEAST WASHINGTON COUNTY.
SOME OF THE STRONGER THUNDERSTORMS WERE IN SOUTHEAST WASHINGTON COUNTY
...AND OVER THE IMMEDIATE COASTAL WATERS WEST OF PANAMA CITY...AND OVER
THE COASTAL WATERS SOUTHWEST AND SOUTH OF FORT WALTON AND DESTIN.
THE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MILES AN HOUR.

THE THUNDERSTORMS ARE CAPABLE OF PRODUCING PERIODS OF HEAVY DOWNPOURS
...FREQUENT LIGHTNING...VARIABLE GUSTY WINDS...POSSIBLE HAIL...AND
FLOODING OF STREETS AND OTHER POOR DRAINAGE AREAS.
PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS.
Special weather statement, Mar 1, 9:37 PM CST, 56 minutes before
FLZ001>004-020435-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
935 PM CST FRI MAR 1 1991

...TORNADO WATCH NUMBER 20 IS IN EFFECT UNTIL 1100 PM CST FOR BAY AND
WASHINGTON COUNTIES IN FLORIDA...AND THE COASTAL WATERS OF BAY COUNTY..

AT 926 PM CST...A LARGE AREA OF RAIN MIXED WITH SCATTERED THUNDERSTORMS
...SOME WITH VERY HEAVY RAIN...WAS OVER MOST OF THE FLORIDA PANHANDLE
...SOUTH ALABAMA...AND THE ADJOINING GULF.
THE THUNDERSTORMS WITH THE HEAVIER RAINS WERE ALONG THE COAST AND
COASTAL WATERS FROM MOBILE TO PENSACOLA...OVER SOUTH OKALOOSA COUNTY...
AND BETWEEN PANAMA CITY AND MARIANNA.
THE RAIN AREA WAS SPREADING SLOWLY EAST...WITH THE INDIVIDUAL THUNDER-
STORMS MOVING NORTHEAST AT 35 MILES AN HOUR.

THE THUNDERSTORMS ARE CAPABLE OF PRODUCING PERIODS OF HEAVY DOWNPOURS
...FREQUENT LIGHTNING...VARIABLE GUSTY WINDS...AND POSSIBLE HAIL.
SOME FLOODING OF STREETS AND OTHER POOR DRAINAGE AREAS MAY BE E7XPECTED
...ESPECIALLY IN THE MORE FLOOD PRONE AREAS.

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.