Alert archive / Mississippi / Flash Flood Warnings in 2003

Flash Flood Warning 11, NWS Jackson, MS

February 21, 2003Jones County, Mississippi

NWS Jackson, MS issued this flash flood warning at Feb 21, 2003, 4:51 PM CST for Jones County, Mississippi. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 21, 2003, 4:51 PM CST (22:51 UTC)
Expired
Feb 21, 2003, 11:00 PM CST
In force
6 hr
Issued by
NWS Jackson, MS
Area
Counties, with a storm outline in the text

County Jones County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.9 hours before the alert went out and 156 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 2003-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 362 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 2003-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 380 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
362 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
380 m²/s²
0-3 km storm-relative helicity
504 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KJAN 212254
FFWJAN
MSC067-220500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
451 PM CST FRI FEB 21 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JONES COUNTY IN SOUTHEAST MISSISSIPPI

* UNTIL 11 PM CST

* AT 451 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN
  5 MILES WEST OF LAUREL...MOVING NORTHEAST AT 40 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS OF NEAR 3 INCHES DURING THE PAST 
SINCE THIS MORNING. AN ADDITIONAL 2 TO 3 INCHES OF RAINFALL IS 
EXPECTED BY 8 PM.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.

LAT...LON 3146 8937 3147 8914 3146 8896 3181 8897
          3180 8940 3168 8938

$$

GAGAN
1 follow-up statement
000 
WGUS74 KJAN 220405
FFSJAN
MSC067-220500-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
958 PM CST FRI FEB 21 2003

FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM CST FOR
JONES COUNTY IN SOUTHEAST MISSISSIPPI

AT 950 PM CST...JONES COUNTY CIVIL DEFENSE REPORTED WIDESPREAD 
FLOODING OF ROADS...SOME COVERED AS MUCH AS 3 TO 4 FEET DEEP 
THROUGHOUT THE COUNTY.  RADAR ESTIMATES INDICATE THAT 3 TO 5 INCHES 
OF RAIN HAS FALLEN OVER THE COUNTY SINCE EARLY THIS MORNING. 

ALTHOUGH THE HEAVIEST RAIN REMAINS WEST OF THE AREA...RENEWED HEAVY 
RAINS LATER TONIGHT MAY REQUIRE EXTENSTION OF THE FLASH FLOOD 
WARNING BEYOND 1100 PM. 

$$

CRAVEN

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 21, 6:06 AM CSTSevere Thunderstorm WarningJANCovington, Jefferson Davis39 min
Feb 21, 9:00 AM CSTFlash Flood WarningJANJefferson Davis, Lawrence, Lincoln3 hr
Feb 21, 11:30 AM CSTFlash Flood WarningJANCovington3 hr
Feb 21, 12:00 PM CSTFlash Flood WarningJANJefferson Davis, Lawrence, Lincoln6 hr
Feb 21, 12:17 PM CSTFlash Flood WarningJANFranklin6 hr
Feb 21, 12:43 PM CSTSevere Thunderstorm WarningJANFranklin37 min
Feb 21, 12:57 PM CSTSevere Thunderstorm WarningJANJefferson43 min
Feb 21, 1:55 PM CSTFlash Flood WarningJANClaiborne, Jefferson6 hr
Feb 21, 2:12 PM CSTFlash Flood WarningJANCopiah, Simpson, Smith6 hr
Feb 21, 3:18 PM CSTFlash Flood WarningJANCovington3 hr
Feb 21, 5:01 PM CSTFlash Flood WarningJANLamar, Marion6 hr
Feb 21, 5:48 PM CSTFlash Flood WarningJANFranklin, Jefferson Davis, Lawrence, Lincoln6 hr

Nearby

Flash Flood Warnings in Mississippi, 2003Every flash flood warning in 2003

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.