Alert archive / Mississippi / Flash Flood Warnings in 2003

Flash Flood Warning 9, NWS Jackson, MS

February 21, 2003Copiah County, Simpson County, Smith County, Mississippi

NWS Jackson, MS issued this flash flood warning at Feb 21, 2003, 2:12 PM CST for Copiah County, Simpson County, Smith 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, 2:12 PM CST (20:12 UTC)
Expired: Feb 21, 2003, 8:10 PM CST
In force: 6 hr
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

Counties Copiah County, MS, Simpson County, MS, Smith County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.2 hours before the alert went out and 182 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 212015
FFWJAN
MSC029-127-129-220210-

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

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SMITH COUNTY IN CENTRAL MISSISSIPPI
  SIMPSON COUNTY IN CENTRAL MISSISSIPPI
  COPIAH COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 810 PM CST

* AT 212 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED A 
WIDESPREAD AREA OF RAIN AND THUNDERSTORMS CONTINUING TO MOVE 
NORTHEAST AT 30 MPH ACROSS THE AREA. SINCE SOILS ARE VERY SATURATED 
FROM UP TO FOUR INCHES OF RAINFALL IN THE PAST 12 HOURS...ADDITIONAL 
RAINFALL IN STRONGER STORMS WILL RAPIDLY RUN OFF AND MAY LEAD TO 
FLOODING OF LOW LYING AREAS. RAIN AND THUNDERSTORMS ARE EXPECTED TO 
CONTINUE ACROSS THE REGION INTO THE EVENING HOURS.

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 3170 9046 3179 8981 3205 8934 3203 9041

$$

1 follow-up statement

000 
WGUS74 KJAN 212349
FFSJAN
MSC029-127-129-220140-

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

FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 810 PM CST FOR...

SMITH COUNTY IN CENTRAL MISSISSIPPI
SIMPSON COUNTY IN CENTRAL MISSISSIPPI
COPIAH COUNTY IN CENTRAL MISSISSIPPI

AT 545 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR IN BRANDON MS 
CONTINUED TO SHOW NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS MUCH OF 
CENTRAL MISSISSIPPI.  HOURLY RAINFALL RATES OF ONE HALF TO THREE 
QUARTERS OF AN INCH SHOULD PERSIST FOR AT LEAST A FEW MORE HOURS.  
RADAR ESTIMATES INDICATE THAT ABOUT 4 TO 6 INCHES OF RAIN HAS 
ALREADY FALLEN IN THIS AREA SINCE EARLY THIS MORNING...ESPECIALLY 
OVER THE SOUTHERN PORTIONS OF THE AFFECTED COUNTIES. 

SIMPSON COUNTY SHERIFF OFFICE REPORTED WATER RUNNING OVER THE BANKS 
OF WEATHERSBY CREEK AND ACROSS FLINT ROAD IN MENDENHALL.  
  
COPIAH COUNTY SHERIFF OFFICE REPORTED ROADS FLOODED IN HAZELHURST.  

SMITH COUNTY SHERIFF OFFICE REPORTED SEVERAL BRIDGES UNDER WATER 
ALONG COUNTY ROADS. 

$$

CRAVEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 21, 6:06 AM CST	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis	39 min
Feb 21, 9:00 AM CST	Flash Flood Warning	JAN	Jefferson Davis, Lawrence, Lincoln	3 hr
Feb 21, 11:30 AM CST	Flash Flood Warning	JAN	Covington	3 hr
Feb 21, 12:00 PM CST	Flash Flood Warning	JAN	Jefferson Davis, Lawrence, Lincoln	6 hr
Feb 21, 12:17 PM CST	Flash Flood Warning	JAN	Franklin	6 hr
Feb 21, 12:43 PM CST	Severe Thunderstorm Warning	JAN	Franklin	37 min
Feb 21, 12:57 PM CST	Severe Thunderstorm Warning	JAN	Jefferson	43 min
Feb 21, 1:55 PM CST	Flash Flood Warning	JAN	Claiborne, Jefferson	6 hr
Feb 21, 3:18 PM CST	Flash Flood Warning	JAN	Covington	3 hr
Feb 21, 4:51 PM CST	Flash Flood Warning	JAN	Jones	6 hr
Feb 21, 5:01 PM CST	Flash Flood Warning	JAN	Lamar, Marion	6 hr
Feb 21, 5:48 PM CST	Flash Flood Warning	JAN	Franklin, Jefferson Davis, Lawrence, Lincoln	6 hr

Nearby

Flash Flood Warnings in Mississippi, 2003 Every 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.