Alert archive / Louisiana / Flash Flood Warnings in 2018
Flash Flood Warning 3, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Feb 21, 2018, 1:52 PM CST for Catahoula Parish, Franklin Parish, Tensas Parish, Louisiana. It was in force for 3 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Feb 21, 2018, 1:52 PM CST (19:52 UTC)
- Expired
- Feb 21, 2018, 4:45 PM CST
- In force
- 3 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Catahoula Parish, LA, Franklin Parish, LA, Tensas Parish, LA
The radar
The Ft Polk radar (KPOE), 154 km from the middle of the area, began a volume at 19:56 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 21, 2:30 PM CST | FLASH FLOOD | Wisner, LA | TOWN POLICE REPORTS FLASH FLOODING ON ROADWAYS NEAR WISNER. |
| Feb 21, 3:00 PM CST | FLASH FLOOD | 1 N Winnsboro, LA | WATER REPORTED IN 3 BUSINESSES ON FAIR AVENUE IN WINNSBORO. |
| Feb 21, 3:00 PM CST | FLASH FLOOD | 1 Ssw Wisner, LA | EMERGENCY MANAGER REPORTS LOCALIZED FLASH FLOODING OVER THE NORTHERN PORTIONS OF THE PARISH. SOME DRIVEWAYS ARE UNDER WATER, ALONG WITH A PARISH ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 7.9 hours before the alert went out and 159 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.
- Mixed-layer CAPE
- 363 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 622 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
The text
As transmitted.
682
WGUS54 KJAN 211952
FFWJAN
LAC025-041-107-212245-
/O.NEW.KJAN.FF.W.0003.180221T1952Z-180221T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
152 PM CST WED FEB 21 2018
The National Weather Service in Jackson has issued a
* Flash Flood Warning for...
Northwestern Tensas Parish in northeastern Louisiana...
Northern Catahoula Parish in northeastern Louisiana...
Franklin Parish in northeastern Louisiana...
* Until 445 PM CST
* At 152 PM CST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to two to three inches of
rain have already fallen. Flash flooding is expected to begin
shortly.
* Some locations that will experience flooding include...
Winnsboro, Wisner, Rosefield, Aimwell, Manifest, Sherwood, Wallace
Ridge, Jigger, Archie, Newlight, Liddieville, Enterprise, Cooter
Point, Sicily Island, Gilbert and Harrisonburg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3193 9201 3193 9190 3203 9190 3207 9193
3209 9187 3214 9190 3217 9188 3224 9155
3226 9154 3223 9151 3221 9155 3220 9132
3201 9129 3154 9201
$$
TWThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 12:48 PM CST | Severe Thunderstorm Warning | JAN | Catahoula, Concordia, Franklin, Richland | 42 min |
| Feb 21, 1:00 PM CST | River Flood Warning | JAN | East Carroll | 32 days |
| Feb 21, 1:00 PM CST | River Flood Warning | JAN | Madison, Tensas | 35 days |
| Feb 21, 1:00 PM CST | River Flood Warning | JAN | Concordia | 79 days |
| Feb 21, 1:28 PM CST | Severe Thunderstorm Warning | JAN | Catahoula, Franklin, Tensas | 62 min |
| Feb 21, 2:28 PM CST | Severe Thunderstorm Warning | JAN | Franklin, Tensas | 32 min |
| Feb 21, 2:39 PM CST | Special Weather Statement | JAN | Madison | 51 min |
| Feb 21, 2:53 PM CST | Severe Thunderstorm Warning | JAN | Madison | 36 min |
Nearby
Flash Flood Warnings in Louisiana, 2018Every flash flood warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.