Alert archive / Mississippi / Flash Flood Warnings in 2003

Flash Flood Warning 5, NWS Jackson, MS

February 21, 2003Covington County, Mississippi

NWS Jackson, MS issued this flash flood warning at Feb 21, 2003, 11:30 AM CST for Covington County, Mississippi. It was in force for 3 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, 11:30 AM CST (17:30 UTC)
Expired
Feb 21, 2003, 2:30 PM CST
In force
3 hr
Issued by
NWS Jackson, MS
Area
Counties, with a storm outline in the text

County Covington County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.5 hours before the alert went out and 154 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 211734
FFWJAN
MSC031-212030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1130 AM CST FRI FEB 21 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 230 PM CST

* AT 1130 AM CST...LAW ENFORCEMENT PERSONNEL REPORTED STREETS 
FLOODED IN THE MOUNT OLIVE AREA. ADDITIONAL RAINFALL MOVING INTO THE 
AREA FROM THE SOUTHWEST WILL CONTINUE TO LEAD TO FLOODING OF 
STREETS...ESPECIALLY IN NORTHERN SECTIONS OF THE COUNTY

LAT...LON 3164 8971 3146 8955 3166 8941 3177 8956

$$

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, 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, 4:51 PM CSTFlash Flood WarningJANJones6 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.