Alert archive / Mississippi / Flash Flood Warnings in 2002

Flash Flood Warning 21, NWS Jackson, MS

July 11, 2002Lamar County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 11, 2002, 12:10 PM CDT for Lamar County, Mississippi. It was in force for 115 min. 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 11, 2002, 12:10 PM CDT (17:10 UTC)
Expired: Jul 11, 2002, 2:05 PM CDT
In force: 115 min
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Lamar County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.2 hours before the alert went out and 121 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: 160 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1177 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: -7 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 111710
FFWJAN
MSC073-111905-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1204 PM CDT THU JUL 11 2002

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN LAMAR COUNTY IN SOUTHEAST MISSISSIPPI

* UNTIL 205 PM CDT

* AT 1204 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER 
  OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER SUMRALL...OR ABOUT 
  10 MILES NORTHWEST OF WEST HATTIESBURG...DRIFTING TO THE SOUTH AT  
  AROUND 10 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS OF NEAR 2 INCHES OVER SUMRALL AND 
RURAL AREAS OF NORTHERN LAMAR COUNTY WITHIN THE LAST 2 HOURS...WITH 
AN ADDITIONAL 1 INCH POSSIBLE THROUGH 200 PM CDT. REPORTS FROM 
EMERGENCY MANAGEMENT OFFICIALS INDICATE THAT WATER IS RISING IN 
SUMRALL...AND BEGINNING TO THREATEN SOME BUILDINGS.  ADDITIONAL 
RAINFALL WILL LIKELY CAUSE FLASH FLOODING IN THE SUMRALL AREA.

VERY HEAVY RAIN FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG 
THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE 
SUBJECT TO FLASH FLOODING.



LAT...LON 3125 8966 3126 8937 3133 8936 3135 8946
          3144 8947 3143 8966

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 12:16 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	39 min
Jul 11, 12:30 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	40 min
Jul 11, 1:16 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	39 min
Jul 11, 1:56 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	44 min
Jul 11, 1:58 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey	47 min
Jul 11, 2:08 PM CDT	Severe Thunderstorm Warning	JAN	Leake	42 min
Jul 11, 2:13 PM CDT	Severe Thunderstorm Warning	JAN	Madison	47 min
Jul 11, 2:52 PM CDT	Severe Thunderstorm Warning	JAN	Scott	43 min
Jul 11, 3:12 PM CDT	Severe Thunderstorm Warning	JAN	Rankin	38 min
Jul 11, 3:33 PM CDT	Severe Thunderstorm Warning	JAN	Scott	42 min
Jul 11, 3:49 PM CDT	Severe Thunderstorm Warning	JAN	Rankin	36 min
Jul 11, 4:26 PM CDT	Flash Flood Warning	JAN	Attala	84 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.