Alert archive / Florida / Flash Flood Warnings in 1991

Flash Flood Warning 3, NWS Tallahassee, FL

March 2, 1991Calhoun County, Florida

NWS Tallahassee, FL issued this flash flood warning at Mar 2, 1991, 2:15 PM CST for Calhoun County, Florida. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Mar 2, 1991, 2:15 PM CST (20:15 UTC)
Expired
Mar 2, 1991, 7:15 PM CST
In force
5 hr
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Calhoun County, FL

The nearest sounding before it

Apalachicola Mun, FL (KAQQ), launched 12:00Z, 8.3 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.

Skew-T log-pSkew-T log-p diagram, Apalachicola Mun, FL at 12:00Z on 1991-03-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 559 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 12:00Z on 1991-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 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
559 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
698 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTLH 022017
FFWTLH
FLC013-030115-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
315 PM EST (215 PM CST) SAT MAR 2 1991
 
THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  815 PM EST (715 PM CST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH FLORIDA
 
   ...NORTHERN AND WESTERN CALHOUN COUNTY
 
VERY HEAVY RAINFALL AMOUNTS OF OVER 6 TO 7 INCHES ACROSS NORTHERN
CALHOUN COUNTY HAVE PRODUCED FLOODING OF MOST OF THE MAJOR STREAMS AND
CREEKS IN NORTHERN AND WESTERN CALHOUN COUNTY THIS AFTERNOON.
 
STATE ROAD 20 IS NOW CLOSED BETWEEN CLARKSVILLE AND HIGHWAY 231 DUE TO
FLOODING FROM JUNIPER CREEK.  OTHER MAJOR CREEKS NOW REPORTED TO BE IN
FLOOD ARE FOUR MILE CREEK, TEN MILE CREEK, STAFFORDS CREEK ACROSS
STATE ROAD 69 AND 69A, AND GRAVES CREEK.  HIGH WATER IS ALSO REPORTED
ALONG CYPRESS CREEK.
 
ALTHOUGH RAINFALL HAS MOSTLY ENDED ACROSS CALHOUN COUNTY THIS
AFTERNOON...ADDITIONAL RAINFALL IS EXPECTED LATER TONIGHT AND SUNDAY.
ANY ADDITIONAL RAINFALL WILL PRODUCE EVEN MORE FLOODING IN AREAS WHERE
STREAMS ARE ALREADY OUT OF THEIR BANKS.
 
PERSONS IN CALHOUN COUNTY...ESPECIALLY THOSE LIVING ALONG THE SMALL
CREEKS AND STREAMS IN THE NORTHERN AND WESTERN PORTIONS OF THE
COUNTY...SHOULD TAKE IMMEDIATE PRECUATIONS TO PROTECT LIVES AND
PROPERTY FROM FLOODING.
 
DUVAL
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
C.ROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE 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, Mar 2, 9:17 AM CST, 4 hours 58 minutes before
FLC037-045-021715-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE APALACHICOLA FLORIDA
1014 AM EST SAT MAR 2 1991

...FLASH FLOOD WATCH CONTINUES OVER THE COUNTIES OF GULF AND FRANKLIN
IN THE FLORIDA PANHANDLE THROUGH THIS MORNING.

VERY HEAVY RAIN WITH THUNDERSTORMS CONTINUE OVER MOST OF THE FLORIDA
PANHANDLE. 3/4 OF INCH OF RAIN HAS FALLEN AT THE APALACHICOLA BUT
GREATER AMOUNTS HAVE BEEN REPORTED THROUGHOUT THE COUNTIES.

THESE STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR.

MOTOREST AND BOATER SHOULD USE EXTREAM CARE IN THESE STORMS.
Special weather statement, Mar 2, 10:03 AM CST, 4 hours 12 minutes before
FLZ004-021730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE APALACHICOLA FLORIDA
1100 AM EST SAT MAR 2 1991

...FLASH FLOOD WATCH CONTINUES OVER THE COUNTIES OF GULF AND FRANKLIN
IN THE FLORIDA PANHANDLE THROUGH THIS MORNING.

VERY HEAVY RAIN WITH THUNDERSTORMS CONTINUE OVER MOST OF THE FLORIDA
PANHANDLE. OVER 1 INCH OF RAIN HAS FALLEN AT THE APALACHICOLA BUT
GREATER AMOUNTS HAVE BEEN REPORTED THROUGHOUT THE COUNTIES.

THESE STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR.

RT 98 IN THE WEST PART OF PORT ST JOE IS CLOSED DUE TO FLOODING.
TRAFFIC IS BEING REROUTED.

MOTORIST AND BOATERS SHOULD USE EXTREME CARE IN THESE STORMS.
Special weather statement, Mar 2, 11:37 AM CST, 2 hours 38 minutes before
FLZ003-005-GAZ011-012-021930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1235 PM EST (1135 AM CST) SAT MAR 2 1991

...URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT FOR NORTH
FLORIDA BIG BEND AREA...

MODERATE TO LOCALLY HEAVY RAIN HAS CONTINUED TO FALL OVER MUCH OF THE
FLORIDA BIG BEND AREA THROUGHOUT THE MORNING...AND MOST AREAS ARE
REPORTING MANY SMALL STREAMS AND DITCHES NEAR BANKFULL...WITH A NUMBER
OF STREETS AND SECONDARY ROADS FLOODED. ALSO REPORTS FROM JACKSON AND
CALHOUN COUNTIES INDICATE A NUMBER OF COUNTY ROADS HAVE BEEN WASHED
OUT. IN NORTHERN LEON COUNTY THERE ARE REPORTS THAT SOME SMALL LAKES
ARE RISING OUT OF THEIR BANKS AND INTO THE BACKYARDS OF SOME HOMES.

REPORTS HAVE BEEN RECEIVED IN JACKSON AND CALHOUN COUNTIES OF SEVERAL
6 INCH RAIN GAGES THAT OVERFLOWED OVERNIGHT...AND AT LEAST ONE
CONFIRMED REPORT OF OVER 7 INCHES OF RAIN NEAR MARIANNA.  RAINFALL
AMOUNTS ACROSS GADSDEN...LIBERTY AND LEON COUNTIES OF FLORIDA RANGE
FROM 4.50 TO 5.50 INCHES AS OF MID MORNING.  TO THE EAST ACROSS
JEFFERSON AND MADISON COUNTIES...LATE MORNING REPORTS INDICATE FROM
3.50 TO NEARLY 4 INCHES...WITH RAINFALL CONTINUING MOST AREAS.

AT 1130 AM EST APALACHICOLA WEATHER RADAR INDICATED THUNDERSTORMS WITH
VERY HEAVY RAIN CONTINUED TO MOVE FROM THE APALACHEE BAY NORTHEASTWARD
ACROSS THE COASTAL AREAS MAINLY BETWEEN THE ST. MARKS AND SUWANNEE
RIVERS.  LIGHT TO MODERATE RAIN WITH SOME LOCAL AREAS OF HEAVY RAIN
CONTINUED OVER AREAS MAINLY EAST OF THE APALACHICOLA RIVER.

MOTORISTS ARE REMINDED NOT TO ATTEMPT TO CROSS FLOODED STREETS OR
BRIDGES.  PARENTS SHOULD KEEP CHILDREN AWAY FROM DITCHES AND
STREAMS...MANY OF WHICH ARE CURRENTLY 1NEAR OR OVER BANKFULL.
Special weather statement, Mar 2, 11:43 AM CST, 2 hours 32 minutes before
FLZ004-021830-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE APALACHICOLA FLORIDA
1240 PM EST SAT MAR 2 1991

...FLASH FLOOD WATCH CONTINUES OVER THE COUNTIES OF GULF AND FRANKLIN
IN THE FLORIDA PANHANDLE THROUGH THIS MORNING.

VERY HEAVY RAIN WITH THUNDERSTORMS CONTINUE OVER EASTERNPART OF THE
FLORIDA PANHANDLE. OVER 1 1/2 INCHES OF RAIN HAS FALLEN AT THE APALACHICOLA
BUT GREATER AMOUNTS HAVE BEEN REPORTED THROUGHOUT THE COUNTIES.

THESE STORMS WERE MOVING NORTHEAST AT 40 MILES AN HOUR.
WHILE THE SYSTEM IS MOVING SOUTHEAST AT 10 MILES AN HOUR.

RT 98 IN THE WEST PART OF PORT ST JOE IS NOW OPEN FOR TRAFFIC.

MOTORIST AND BOATERS SHOULD USE EXTREME CARE IN THESE STORMS.

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 2, 9:02 AM CSTFlash Flood WarningTAEBay, Washington118 min

Nearby

Flash Flood Warnings in Florida, 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.