Alert archive / Mississippi / Flash Flood Warnings in 2004

Flash Flood Warning 64, NWS Jackson, MS

July 1, 2004Claiborne County, Mississippi; Tensas Parish, Louisiana

NWS Jackson, MS issued this flash flood warning at Jul 1, 2004, 4:05 PM CDT for Claiborne County, Mississippi; Tensas 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: Jul 1, 2004, 4:05 PM CDT (21:05 UTC)
Expired: Jul 1, 2004, 6:05 PM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

Counties Tensas Parish, LA, Claiborne County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 121 km from the middle of the area, began a volume at 21:05 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.1 hours before the alert went out and 114 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: -70 J/kg
Mixed-layer LCL: 947 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 91 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 012107
FFWJAN
LAC107-MSC021-012305-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
405 PM CDT THU JUL 1 2004

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  TENSAS PARISH IN NORTHEAST LOUISIANA
  CLAIBORNE COUNTY IN SOUTHWEST MISSISSIPPI

* UNTIL 605 PM CDT

* AT 405 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER PORT GIBSON...OR ABOUT
  10 MILES SOUTHEAST OF GRAND GULF...MOVING EAST AT 20 MPH.
  SHOWERS AND THUNDERSTORMS WILL CONTINUE TO CROSS TENSAS PARISH AND
  CLAIBORNE COUNTY FOR THE NEXT TWO HOURS...CAUSING AN EXTRA 1 TO 2 
  INCHES OF RAINFALL.

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.


LAT...LON 3200 9148 3190 9142 3189 9085 3207 9087

$$

1 follow-up statement

000 
WGUS74 KJAN 012157
FFSJAN
LAC107-MSC021-012305-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
458 PM CDT THU JUL 1 2004

FLASH FLOOD WARNING REMAINS IN EFFECT FOR...

TENSAS PARISH IN NORTHEAST LOUISIANA
CLAIBORNE COUNTY IN SOUTHWEST MISSISSIPPI...WHICH WILL EXPIRE AT 605 PM

AT 455 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED MORE HEAVY 
RAIN PRODUCING STORMS CROSSING THE WARNING AREA FROM THE SOUTHWEST.

BETWEEN 2 AND 3 INCHES OF RAIN FELL ACROSS MUCH OF THE WARNING AREA
THIS AFTERNOON...AND AN ADDITIONAL 1 TO LOCALLY 2 INCHES WILL BE POSSIBLE
BY 6 PM. THE RAIN IS EXPECTED TO DIMINISH ACROSS THE WARNING AREA
FROM THE SOUTHWEST AFTER 6 PM AND THIS SHOULD ALLOW CONDITIONS TO 
GRADUALLY IMPROVE EARLY THIS EVENING.



$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 5:26 PM CDT	Flash Flood Warning	JAN	Rankin	89 min
Jul 1, 6:30 PM CDT	Flash Flood Warning	JAN	Franklin	90 min

Nearby

Flash Flood Warnings in Mississippi, 2004 Flash Flood Warnings in Louisiana, 2004 Every flash flood warning in 2004

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; radar from the NEXRAD Level II archive.