Alert archive / Mississippi / Flash Flood Warnings in 1994

Flash Flood Warning 16, NWS Jackson, MS

April 12, 1994Forrest County, Mississippi

NWS Jackson, MS issued this flash flood warning at Apr 12, 1994, 4:23 PM CDT for Forrest County, Mississippi. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Apr 12, 1994, 4:23 PM CDT (21:23 UTC)
Expired
Apr 12, 1994, 6:30 PM CDT
In force
2 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Forrest County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.4 hours before the alert went out and 113 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, Slidell Radar S, LA at 12:00Z on 1994-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 970 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, Slidell Radar S, LA at 12:00Z on 1994-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.193958Sfc1 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
970 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
527 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 122127 COR
FFWJAN
MSC035-122330-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING                   ...CORRECTED...
NATIONAL WEATHER SERVICE JACKSON MS
423 PM CDT TUE APR 12 1994

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
FLASH FLOOD  OR   FLOOD WARNING EFFECTIVE UNTIL  630 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......

IN SOUTHEAST MISSISSIPPI

   ...FORREST COUNTY

STRONG THUNDERSTORMS THAT MOVED ACROSS NORTH AND CENTRAL FORREST COUNTY
HAVE PRODUCED AREAS OF FLOODING ON STREETS AND HIGHWAYS AND LOW LYING
LAND. STREET FLOODING HAS BEEN REPORTED IN HATTIESBURG WITH SOME REPORTS
OF UP TO TRHEE FEET OF WATER ON CITY STREETS. SEVERAL MORE STRONG
THUNDERSTORMS ARE POSITIONED TO MOVE INTO THE AREA OVER THE NEXT HOUR
FOR MORE HEAVY RAIN.

MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT
TO CROSS BRIDGES OR LOW SPOTS IF WATER COVERS THE ROAD.  NEVER
TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 3:25 AM CDTSevere Thunderstorm WarningJANIssaquena35 min
Apr 12, 5:08 PM CDTSevere Thunderstorm WarningJANLamar52 min

Nearby

Flash Flood Warnings in Mississippi, 1994Every flash flood warning in 1994

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.