Alert archive / Mississippi / Flash Flood Warnings in 2002

Flash Flood Warning 25, NWS Jackson, MS

August 1, 2002Lawrence County, Mississippi

NWS Jackson, MS issued this flash flood warning at Aug 1, 2002, 7:41 AM CDT for Lawrence 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: Aug 1, 2002, 7:41 AM CDT (12:41 UTC)
Expired: Aug 1, 2002, 10:40 AM CDT
In force: 3 hr
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Lawrence County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.7 hours before the alert went out and 155 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: 1550 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 28 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 011241
FFWJAN
MSC077-011540-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
738 AM CDT THU AUG 1 2002

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LAWRENCE COUNTY IN SOUTH CENTRAL MISSISSIPPI

* UNTIL 1040 AM CDT

* AT 738 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN 12 MILES NORTH OF          
  MONTICELLO...MOVING SOUTH AT 10 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS BETWEEN 1.5 AND 2 INCHES HAVE 
FALLEN ACROSS PORTIONS OF NORTHERN LAWRENCE COUNTY OVER THE PAST 2 
HOURS. MORE THUNDERSTORMS ARE DEVELOPING TO THE NORTH AND WILL MOVE 
SOUTH OVER THE AREAS THAT ARE CURRENTLY RECEIVING THE HEAVY 
RAINFALL. AN ADDITIONAL 1 TO 2 INCHES OF RAIN WILL BE POSSIBLE OVER 
LAWRENCE COUNTY...THROUGH 10:30 AM.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

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 3175 8999 3172 9022 3138 9022 3143 8999

1 follow-up statement

000 
WGUS74 KJAN 011454
FFSJAN
MSC077-011540-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
952 AM CDT THU AUG 1 2002

FLASH FLOOD WARNING HAS BEEN CANCELLED FOR...

LAWRENCE COUNTY IN SOUTH CENTRAL MISSISSIPPI

RAIN HAS DIMINISHED OVER LAWRENCE COUNTY...AND RADAR INDICATES THE 
POSSIBILITY FOR ADDITIONAL HEAVY RAINFALL HAS ENDED FOR NOW.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 7:05 AM CDT	Flash Flood Warning	JAN	Rankin, Simpson	3 hr
Aug 1, 8:05 AM CDT	Flash Flood Warning	JAN	Copiah	3 hr
Aug 1, 12:29 PM CDT	Flash Flood Warning	JAN	Hinds	91 min
Aug 1, 1:02 PM CDT	Flash Flood Warning	JAN	Hinds	58 min

Nearby

Flash Flood Warnings in Mississippi, 2002 Every flash flood warning in 2002

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.