Alert archive / Louisiana / Flash Flood Warnings in 2001

Flash Flood Warning 9, NWS Shreveport, LA

March 1, 2001Caldwell Parish, Jackson Parish, Ouachita Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Mar 1, 2001, 8:00 PM CST for Caldwell Parish, Jackson Parish, Ouachita Parish, Louisiana. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Mar 1, 2001, 8:00 PM CST (02:00 UTC)
Expired: Mar 1, 2001, 11:30 PM CST
In force: 4 hr
Issued by: NWS Shreveport, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Caldwell Parish, LA, Jackson Parish, LA, Ouachita Parish, LA

The radar

The Ft Polk radar (KPOE), 135 km from the middle of the area, began a volume at 02:04 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

Shreveport, LA (KSHV), launched 00:00Z, 2.0 hours before the alert went out and 138 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 422 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 126 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 KSHV 020205
FFWSHV
LAC021-049-073-020530-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
800 PM CST THU MAR 1 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALDWELL PARISH IN NORTH CENTRAL LOUISIANA
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA
  OUACHITA PARISH IN NORTH CENTRAL LOUISIANA

* UNTIL 1130 PM CST

* AT 800 PM CST...THE SHREVEPORT WEATHER SERVICE DOPPLER RADAR   
INDICATED WIDESPREAD SHOWERS AND THUNDERSTORMS ACROSS CENTRAL 
LOUISIANA...SPREADING FURTHER NORTHWARD INTO PORTIONS OF NORTHEAST 
LOUISIANA...INCLUDING THE MONROE AREA. 

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD
WARNING FOR...
  CALDWELL PARISH IN NORTH CENTRAL LOUISIANA
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA
  OUACHITA PARISH IN NORTH CENTRAL LOUISIANA
UNTIL 1130 PM CST.

LAT...LON 3197 9202 3198 9228 3217 9235 3221 9275
          3240 9272 3246 9240 3268 9195 3241 9205

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 1, 9:22 PM CST	Flash Flood Warning	SHV	Lincoln, Union	4 hr
Mar 1, 11:30 PM CST	Flash Flood Warning	SHV	Grant, LaSalle	6 hr

Nearby

Flash Flood Warnings in Louisiana, 2001 Every flash flood warning in 2001

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.