Alert archive / Louisiana / Flash Flood Warnings in 2003

Flash Flood Warning 79, NWS Jackson, MS

June 17, 2003West Carroll Parish, Louisiana

NWS Jackson, MS issued this flash flood warning at Jun 17, 2003, 3:21 PM CDT for West Carroll Parish, Louisiana. 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: Jun 17, 2003, 3:21 PM CDT (20:21 UTC)
Expired: Jun 17, 2003, 5:30 PM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County West Carroll Parish, LA

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.4 hours before the alert went out and 141 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: 1579 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 9 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 172022
FFWJAN
LAC123-172230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
321 PM CDT TUE JUN 17 2003

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CARROLL PARISH IN NORTHEAST LOUISIANA

* UNTIL 530 PM CDT

* AT 321 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED            
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN FROM 7 MILES NORTH OF OAK  
  GROVE TO 16 MILES SOUTHWEST OF OAK GROVE...MOVING EAST AT 20 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS IN EXCESS OF 2 INCHES PER HOUR
WILL CONTINUE THROUGH 5 PM BEFORE LETTING UP. 

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

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 3302 9144 3265 9161 3260 9145 3301 9125

$$

1 follow-up statement

000 
WGUS74 KJAN 172211
FFSJAN
LAC123-172230-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
507 PM CDT TUE JUN 17 2003

FLASH FLOOD WARNING IS CANCELED FOR...

WEST CARROLL PARISH IN NORTHEAST LOUISIANA

THE FLASH FLOOD WARNING FOR WEST CARROLL PARISH HAS BEEN CANCELED.  
THE THUNDERSTORMS RESPONSIBLE FOR THE TORRENTIAL RAINS AND FLASH 
FLOODING HAVE WEAKENED. RAIN FALL RATES HAVE DECREASED AND ONLY 
LIGHT TO MODERATE SHOWERS ARE EXPECTED.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 12:48 PM CDT	Flash Flood Warning	JAN	Morehouse	2 hr
Jun 17, 4:14 PM CDT	Flash Flood Warning	JAN	Morehouse	3 hr

Nearby

Flash Flood Warnings in Louisiana, 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.