Alert archive / Mississippi / Flash Flood Warnings in 2003

Flash Flood Warning 101, NWS Jackson, MS

July 5, 2003Copiah County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 5, 2003, 2:30 PM CDT for Copiah County, Mississippi. It was in force for 2 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: Jul 5, 2003, 2:30 PM CDT (19:30 UTC)
Expired: Jul 5, 2003, 4:30 PM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Copiah County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 7.5 hours before the alert went out and 54 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: 372 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 29 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 
WGUS54 KJAN 051931
FFWJAN
MSC029-052130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
230 PM CDT SAT JUL 5 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 430 PM CDT

* AT 230 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS PRODUCING VERY HEAVY RAIN NEAR HAZLEHURST...MOVING 
NORTHEAST AT 5 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS OF 2 TO 3 INCHES IN ABOUT AN HOUR 
HAVE BEEN OBSERVED OVER PARTS OF COPIAH COUNTY. ADDITIONAL HEAVY 
RAINFALL WILL LIKELY OCCUR FROM HAZLEHURST TO CRYSTAL SPRINGS 
BETWEEN 230 AND 330 PM. THIS WILL LIKELY CAUSE FLOODING OF 
ROADS...STREETS...AND CREEKS.

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 3193 9059 3176 9045 3188 9020 3206 9023
          3204 9045

$$

2 follow-up statements

000 
WGUS74 KJAN 052019
FFSJAN
MSC029-052130-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
320 PM CDT SAT JUL 5 2003

FLASH FLOOD WARNING REMAINS IN EFFECT FOR...

COPIAH COUNTY IN CENTRAL MISSISSIPPI

AT 320 PM DOPPLER RADAR PRECIPITATION ESTIMATES INDICATE THAT UP TO 
TWO AND ONE HALF INCHES OF RAIN HAVE FALLEN OVER THE PAST HOUR 
ACROSS PORTIONS OF CENTRAL COPIAH COUNTY. RADAR IMAGERY ALSO 
INDICATES THAT THE THUNDERSTORMS RESPONSIBLE FOR THE FLASH FLOODING 
ARE BEGINNING TO WEAKEN AND ARE MOVING NORTHEAST AT 10 MPH. DUE 
TO THE RECENT HEAVY RAINFALL...THE FLASH FLOOD WARNING IS ALLOWED TO 
CONTINUE.

$$
18/HENRY

000 
WGUS74 KJAN 052138
FFSJAN
MSC029-052145-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
436 PM CDT SAT JUL 5 2003

FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE FOR COPIAH COUNTY IN 
CENTRAL MISSISSIPPI. THE THUNDERSTORMS AND HEAVY RAINS THAT PROMPTED 
THE FLASH FLOOD WARNING HAVE DISSIPATED AND MOVED OUT OF THE 
AREA...THUS ALLOWING THE WARNING TO EXPIRE.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 11:27 AM CDT	Flash Flood Warning	JAN	Lawrence	93 min
Jul 5, 12:09 PM CDT	Flash Flood Warning	JAN	Franklin	2 hr
Jul 5, 4:21 PM CDT	Flash Flood Warning	JAN	Humphreys, Sharkey	119 min

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.