Alert archive / Mississippi / Flash Flood Warnings in 1993

Flash Flood Warning 7, NWS Jackson, MS

January 20, 1993Wilkinson County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jan 20, 1993, 4:24 PM CST for Wilkinson County, Mississippi. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Jan 20, 1993, 4:24 PM CST (22:24 UTC)
Expired
Jan 20, 1993, 10:30 PM CST
In force
6 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Wilkinson County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.4 hours before the alert went out and 174 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 12:00Z on 1993-01-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 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 12:00Z on 1993-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 466 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
531 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
466 m²/s²
0-3 km storm-relative helicity
493 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 202226 COR
FFWJAN
MSC157-210430-

BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING       ...CORRECTED FROM FLASH FLOOD TO FLOOD WARNING...
NATIONAL WEATHER SERVICE JACKSON MS
424 PM CST WED JAN 20 1993

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1030 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS......

IN SOUTHWEST MISSISSIPPI

   ...WILKINSON COUNTY

HEAVY RAIN AND THUNDERSTORMS HAVE PRODUCED 4 TO 6 INCHES OF RAIN OVER
SOUTHERN COUNTIES OF MISSISSIPPI. FLOODING IS OCCURRING IN SOME
LOCATIONS WITH REPORTS OF ROADS AND BUILDINGS UNDER WATER IN SOME LOW
LYING AREAS. RAINFALL WILL TAPER OFF LATER TONIGHT AS THE ASSOCIATED
WEATHER SYSTEM MOVES OUT OF THE REGION.
DO NOT DRIVE YOUR CAR INTO AREAS WHERE WATER COVERS THE ROAD.
THE WATER DEPTH MAY BE TOO DEEP TO ALLOW YOU TO CROSS SAFELY.
VEHICLES CAUGHT IN RISING WATER MUST BE ABANDONED QUICKLY.
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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, Jan 20, 3:57 PM CST, 27 minutes before
MSZALL-202200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
350 PM CST WED JAN 20 1993

...DISREGARD ERRONEOUS FLASH FLOOD WARNING FOR 921 AM ISSUED
   FOR FORREST AND LAMAR COUNTIES...

A FLASH FLOOD WARNING FOR FORREST AND LAMAR COUNTIES WAS
MISTAKENLY TRANSMITTED OVER THE NATIONAL WEATHER WIRE CIRCUIT.
PLEASE DISREGARD THIS PARTICULAR MESSAGE. FLASH FLOOD WARNINGS FOR
THESE COUNTIES MAY BE NECESSARY LATER THIS EVENIN.

CONDITIONS COULD GET WORSE THROUGH THE REMAINDER OF THE PREDAWN
HOURS...DURING THE DAY WEDNESDAY...AND WEDNESDAY NIGHT.  MORE HEAVY
RAINFALL AND A FEW SEVERE THUNDERSTORMS ARE POSSIBLE OVER THE NEXT 24
HOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 20, 9:21 AM CSTFlash Flood WarningJANForrest, Lamar3 hr
Jan 20, 4:05 PM CSTFlash Flood WarningJANMarion, Walthall3 hr
Jan 20, 4:05 PM CSTFlash Flood WarningJANLamar3 hr
Jan 20, 4:31 PM CSTFlash Flood WarningJANAmite, Pike6 hr
Jan 20, 4:51 PM CSTFlash Flood WarningJANForrest6 hr

Nearby

Flash Flood Warnings in Mississippi, 1993Every flash flood warning in 1993

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.