Alert archive / Mississippi / Flash Flood Warnings in 1991

Flash Flood Warning 39, NWS Jackson, MS

April 28, 1991Issaquena County, Sharkey County, Mississippi

NWS Jackson, MS issued this flash flood warning at Apr 28, 1991, 11:15 PM CDT for Issaquena County, Sharkey County, Mississippi. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 28, 1991, 11:15 PM CDT (04:15 UTC)
Expired
Apr 29, 1991, 2:15 AM CDT
In force
3 hr
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Issaquena County, MS, Sharkey County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.3 hours before the alert went out and 94 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, Jackson, MS at 00:00Z on 1991-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 515 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 00:00Z on 1991-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.193958Sfc1 km3 km6 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
515 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 290417 COR
FFWJAN
MSC011-133-151-053-055-125-290715-

BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING...REMOVE FLASH FROM BODY OF WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1115 PM CDT SUN APR 28 1991

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  215 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTHWEST MISSISSIPPI

   ...BOLIVAR COUNTY...SUNFLOWER COUNTY...WASHINGTON COUNTY

IN WEST CENTRAL MISSISSIPPI

   ...HUMPHREYS COUNTY...ISSAQUENA COUNTY...SHARKEY COUNTY

AT 1113PM WIDESPREAD MODERATE TO HEAVY RAINS WERE CONTINUING OVER
MUCH OF THE DELTA REGION BEHIND A LINE OF THUNDERSTORMS THAT NOW
STRETCHED FROM GRENADA TO WINONA TO YAZOO CITY AND VICKSBURG.
THE FRONT LINE APPEARED TO BE WEAKENING BUT STEADY RAINS WILL
CONTINUE OVER ALREADY FLOODED AREAS IN THE DELTA. AMOUNTS OF ONE
INCH PER HOUR COULD FALL IN THESE COUNTIES THROUGH EARLY MONDAY
MORNING CAUSING SERIOUS FLOODING PROBLEMS.

RESIDENTS SHOULD BE PREPARED TO EVACUATE FLOODED AREAS IF SO
DIRECTED BY LOCAL CIVIL DEFENSE OFFICIALS.

AT NIGHT BE ESPECIALLY CAUTIOUS WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE SPWIFTLY TO ESCAPE FLOOD WATERS.
<

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, Apr 28, 5:21 PM CDT, 5 hours 54 minutes before
MSZ009-012-ALZ008-013-290000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 510 PM CDT SUN APR 28 1991

 ...TORNADO WATCHES NUMBERS 223...228...229 CONTINUE IN EFFECT FOR ALL
COUNTIES IN EAST CENTRAL MISSISSIPPI AND EXTREME WEST CENTRAL...

TORNADO WATCH 223 CONTINUES IN EFFECT UNTIL 900 PM CDT FOR CENTRAL
MISSISSIPPI AND TORNADO WATCHES 228 AND 229 CONTINUE IN EFFECT UNTIL
1000 PM CDT AND 1100 PM FOR EXTREME WEST CENTRAL ALABAMA AND EAST
CENTRAL MISSISSIPPI.

A FLASH FLOOD WATCH IS IN EFFECT FOR EAST CENTRAL MISSISSIPPI FOR TONIGHT.

AT 502 PM CDT RADAR INDICATED A LARGE AREA OF RAIN WITH EMBEDDED INTENSE
THUNDERSTORMS ALONG AND WEST OF A LINE FROM NEAR COLUMBIA MISSISSHIPPI TO
TO NEAR ABERDEEN MISSISSIPPI. THE STRONGEST STORMS WERE IN A LINE FROM
NEAR COLOUMBUS TO NEAR WINONA MISSISSIPPI. ALL THE THUNDERSTORMS WERE
MOVING NORTHEAST AT 35 MPH.
Local storm report, Apr 28, 6:53 PM CDT, 4 hours 22 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
650 PM CDT SUN APR 28 1991

622 PM CDT...HOUSE FIRE DEPT. REPORTS FUNNEL CLOUD OVER HOUSE
             MISSISSIPPI OR 13 MILES SOUTHEAST OF PHILADELPHIA
             MISSISSIPPI.

625 PM CDT...NESHOBA COUNTY C. D. REPORTS FUNNEL CLOUD 7 MILES
             SOUTHEAST OF PHILADELPHIA MISSISSIPPI.
Special weather statement, Apr 28, 7:10 PM CDT, 4 hours 5 minutes before
MSZ009-012-ALZ008-013-290200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
705 PM CDT SUN APR 28 1991

...TORNADO WATCHES 223 AND 229 CONTINUE IN EFFECT FOR ALL COUNTIES IN
EAST CENTRAL MISSISSIPPI.

...TORNADO WATCH 228 HAS BEEN CANCELLED FOR EXTREME WEST CENTRAL ALABAMA.

...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MISSISSIPPI FOR TONIGHT.

TORNADO WATCH 223 IS IN EFFECT UNTIL 900 PM CDT AND TORNADO WATCH 229 IS
IN EFFECT UNTIL 1100 PM CDT FOR EAST CENTRAL MISSISSIPPI.
AT 705 PM CDT RADAR INDICATED A LARGE AREA OF RAIN AND THUNDERSTORMS
ALONG AND WEST OF A LINE FROM HEIDELBERG MISSISSIPPI TO NEAR OAKMAN
ALABAMA. THE STRONGEST STORMS WERE LOCATED IN NOXUBEE COUNTY MISS&ISSIPPI.
ALL RADAR ECHOES WERE MOVING NORTHEAST AT 40 MPH.
Special weather statement, Apr 28, 10:03 PM CDT, 1 hour 12 minutes before
MSZ009-012-290400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
1002 PM CDT SUN APR 28 1991

...TORNADO WATCH NUMBER 233 REMAINS IN EFFECT FOR A PART OF EAST
CENTRAL MISSISSIPPI UNTIL 3 AM CDT...

AT 953 PM CDT RADAR INDICATED A LARGE AREA OF RAIN WITH EMBEDDED VERY
STRONG THUNDERSTORMS WEST OF A LINE FROM MCCOMB TO BAY SPRINGS TO
STARKVILLE MISSISSIPPI.  THE STRONGEST THUNDERSTORM WAS INDICATED
NORTH OF PHILADELPHIA MISSISSIPPI.

THE AREA OF RAIN AND THUNDERSTORMS WAS MOVING EAST AT 35 MPH AND
SHOULD BE MOVING INTO THE REST OF EAST CENTRAL MISSISSIPPI WITHIN THE
HOUR.

PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD REMAIN ALERT FOR LATER
STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Apr 28, 11:04 PM CDT, 11 minutes before
MSZ009-012-ALZ008-013-290600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
1102 PM CDT SUN APR 28 1991

...TORNADO WATCH NUMBER 233 WHICH INCLUDES PARTS OF EAST CENTRAL
MISSISSIPPI REMAINS IN EFFECT UNTIL 3 AM CDT...

...SEVERE THUNDERSTORM WATCH NUMBER 234 WHICH INCLUDES PORTIONS OF
NORTH AND CENTRAL MISSISSIPPI AND SUMTER COUNTY IN WEST CENTRAL
ALABAMA REMAINS IN EFFECT UNTIL 5 AM CDT...

AT 1051 PM CDT RADAR INDICATED A LARGE AREA OF RAIN WITH EMBEDDED
STRONG THUNDERSTORMS WEST OF A LINE FROM PRENTISS TO EDINBURG
MISSISSIPPI TO HAMILTON ALABAMA.  THE STRONGEST THUNDERSTORM WAS
INDICATED NORTH OF VICKSBURG MISSISSIPPI.

THE AREA WAS MOVING NORTHEAST AT 35 MPH.
 =
PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD REMAIN ALERT FOR LATER
STATEMENTS AND POSSIBLE WARNINGS.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 7:07 PM CDTSevere Thunderstorm WarningJANAmite, Franklin38 min
Apr 28, 7:26 PM CDTSevere Thunderstorm WarningJANWilkinson49 min
Apr 28, 7:47 PM CDTSevere Thunderstorm WarningJANAmite28 min
Apr 28, 8:20 PM CDTSevere Thunderstorm WarningJANFranklin40 min
Apr 28, 9:13 PM CDTFlash Flood WarningJANHumphreys, Sharkey, Sunflower, Washington2 hr
Apr 28, 9:13 PM CDTFlash Flood WarningJANIssaquena2 hr
Apr 28, 9:13 PM CDTFlash Flood WarningJANBolivar2 hr
Apr 28, 9:13 PM CDTSevere Thunderstorm WarningJANBolivar, Humphreys, Sunflower, Washington2 hr
Apr 28, 9:13 PM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey2 hr
Apr 28, 10:04 PM CDTFlash Flood WarningJANYazoo116 min
Apr 28, 10:04 PM CDTFlash Flood WarningJANLeflore, Tallahatchie116 min
Apr 28, 10:04 PM CDTSevere Thunderstorm WarningJANLeflore, Tallahatchie116 min
Apr 28, 10:04 PM CDTSevere Thunderstorm WarningJANYazoo116 min
Apr 28, 10:15 PM CDTSevere Thunderstorm WarningJANWarren60 min
Apr 28, 10:30 PM CDTFlash Flood WarningJANCarroll, Holmes2 hr
Apr 28, 10:30 PM CDTSevere Thunderstorm WarningJANCarroll, Holmes2 hr
Apr 28, 10:49 PM CDTTornado WarningJANYazoo26 min
Apr 28, 11:15 PM CDTFlash Flood WarningJANBolivar, Humphreys, Sunflower, Washington3 hr
Apr 28, 11:45 PM CDTFlash Flood WarningJANWarren2 hr
Apr 28, 11:45 PM CDTSevere Thunderstorm WarningJANWarren2 hr
Apr 29, 12:02 AM CDTFlash Flood WarningJANWarren, Yazoo3 hr
Apr 29, 1:37 AM CDTFlash Flood WarningJANCarroll, Holmes, Leflore83 min
Apr 29, 1:48 AM CDTSevere Thunderstorm WarningJANAdams, Claiborne, Jefferson57 min
Apr 29, 1:48 AM CDTSevere Thunderstorm WarningJANWarren57 min
Apr 29, 1:59 AM CDTSevere Thunderstorm WarningJANHumphreys, Sharkey, Yazoo61 min
Apr 29, 2:16 AM CDTSevere Thunderstorm WarningJANCarroll, Holmes, Leflore44 min
Apr 29, 2:26 AM CDTFlash Flood WarningJANBolivar, Humphreys, Issaquena, Sharkey, Sunflower, Washington4 hr
Apr 29, 2:59 AM CDTSevere Thunderstorm WarningJANHinds, Madison61 min
Apr 29, 3:07 AM CDTFlash Flood WarningJANCarroll, Holmes, Leflore, Yazoo3 hr
Apr 29, 4:43 AM CDTFlash Flood WarningJANAttala3 hr
Apr 29, 3:05 PM CDTFlash Flood WarningJANCovington, Jefferson Davis115 min
Apr 29, 3:05 PM CDTFlash Flood WarningJANLawrence, Marion, Walthall115 min
Apr 29, 4:57 PM CDTFlash Flood WarningJANJefferson Davis, Lawrence, Marion, Simpson, Walthall4 hr
Apr 29, 4:57 PM CDTFlash Flood WarningJANCovington, Forrest, Lamar4 hr
Apr 29, 4:57 PM CDTFlash Flood WarningJANSmith4 hr
Apr 29, 4:57 PM CDTFlash Flood WarningJANPike4 hr
Apr 29, 5:36 PM CDTFlash Flood WarningJANNeshoba3 hr

Nearby

Flash Flood Warnings in Mississippi, 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.