Alert archive / Mississippi / Flash Flood Warnings in 1994

Flash Flood Warning 20, NWS Jackson, MS

July 13, 1994Grenada County, Leflore County, Tallahatchie County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 13, 1994, 7:50 AM CDT for Grenada County, Leflore County, Tallahatchie County, Mississippi. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 13, 1994, 7:50 AM CDT (12:50 UTC)
Expired
Jul 13, 1994, 10:45 AM CDT
In force
3 hr
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Grenada County, MS, Leflore County, MS, Tallahatchie County, MS

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 0.8 hours before the alert went out and 120 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, Little Rock, AR at 12:00Z on 1994-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1361 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, Little Rock, AR at 12:00Z on 1994-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.1939Sfc1 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
1361 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
545 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
81 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 131252
FFWJAN
MSC043-083-135-131545-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
750 AM CDT WED JUL 13 1994
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 1045 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN NORTH CENTRAL MISSISSIPPI
 
   ...WESTERN GRENADA COUNTY...NORTHERN LEFLORE COUNTY
 
IN NORTHWEST MISSISSIPPI
 
   ...SOUTHERN TALLAHATCHIE COUNTY
 
IN THE LAST THREE HOURS, THREE TO FOUR INCHES OF RAIN HAS FALLEN BETWEEN
MINTER CITY AND GRENADA. CREEKS AND SMALL STREAMS WILL LIKELY OVERFLOW
THEIR BANKS AND ROADWAYS COULD BECOME IMPASSABLE.
 
MORE THUNDERSTORMS WERE DEVELOPING OVER SUNFLOWER AND LEFLORE COUNTY AND
THEY WILL MOVE EAST ACROSS THE WARNING AREA.
 
 
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.
<
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 6:29 AM CDTFlash Flood WarningJANGrenada, Leflore2 hr

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.