Alert archive / Mississippi / Flash Flood Warnings in 2003

Flash Flood Warning 97, NWS Jackson, MS

July 3, 2003Simpson County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 3, 2003, 9:59 PM CDT for Simpson 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 3, 2003, 9:59 PM CDT (02:59 UTC)
Expired: Jul 4, 2003, 12:00 AM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Simpson County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 3.0 hours before the alert went out and 47 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: 1741 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1181 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 24 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 040302
FFWJAN
MSC127-040500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
959 PM CDT THU JUL 3 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL MIDNIGHT CDT

* AT 959 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED            
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER MAGEE AND             
  MENDENHALL...MOVING NORTHWEST AT 10 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS BETWEEN TWO AND THREE INCHES OF 
RAIN HAVE FALLEN OVER EASTERN SIMPSON COUNTY DURING THE PAST HOUR... 
WITH ANOTHER INCH OF RAIN POSSIBLE.

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 3205 8995 3179 8991 3181 8968 3204 8969

$$

1 follow-up statement

000 
WGUS74 KJAN 040402
FFSJAN
MSC127-040455-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1100 PM CDT THU JUL 3 2003

FLASH FLOOD WARNING REMAINS IN EFFECT FOR...

SIMPSON COUNTY IN CENTRAL MISSISSIPPI

AT 1055 PM...RADAR INDICATED THAT BETWEEN THREE AND FOUR INCHES OF 
RAIN HAVE FALLEN OVER EASTERN PORTIONS OF SIMPSON COUNTY DURING THE 
PAST TWO HOURS.  THE THUNDERSTORMS RESPONSIBLE FOR PRODUCING THIS 
HEAVY RAINFALL ARE NOW LOCATED OVER THE TOWNS OF PINOLA AND SHIVERS 
AND ARE MOVING TO THE SOUTHWEST AT 10 MPH.

THESE STORMS ARE EXPECTED TO WEAKEN AND MOVE OUT OF SIMPSON COUNTY 
WITHIN THE NEXT HOUR AND THE WARNING WILL BE ALLOWED TO EXPIRE AT 
MIDNIGHT.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 2:59 PM CDT	Flash Flood Warning	JAN	Forrest	4 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.