Alert archive / Louisiana / Flash Flood Warnings in 2021
Flash Flood Warning 3, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Feb 17, 2021, 2:54 PM CST for Catahoula Parish, Concordia Parish, Louisiana; Adams County, Mississippi. It was in force for 2 hr. 1 report 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 17, 2021, 2:54 PM CST (20:54 UTC)
- Expired
- Feb 17, 2021, 5:00 PM CST
- In force
- 2 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Catahoula Parish, LA, Concordia Parish, LA, Adams County, MS
The radar
The Ft Polk radar (KPOE), 141 km from the middle of the area, began a volume at 20:52 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 17, 3:06 PM CST | FLASH FLOOD | Natchez, MS | REPORTED THROUGH SOCIAL MEDIA - FLASH FLOODING DUE TO ICE JAMMING UP DRAINAGE. |
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, 8.9 hours before the alert went out and 169 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1328 m above ground
- 0-6 km bulk shear
- 92 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
317
WGUS54 KJAN 172054
FFWJAN
LAC025-029-MSC001-172300-
/O.NEW.KJAN.FF.W.0003.210217T2054Z-210217T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
254 PM CST Wed Feb 17 2021
The National Weather Service in Jackson has issued a
* Flash Flood Warning for...
Catahoula Parish in northeastern Louisiana...
Concordia Parish in northeastern Louisiana...
Adams County in southwestern Mississippi...
* Until 500 PM CST.
* At 253 PM CST, emergency management reported thunderstorms
producing heavy rain across the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Emergency management. Adams County and Concordia
Parish emergency Management reported flooded roads.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Natchez, Vidalia, Ferriday, Monterey, Larto, Jonesville, Clayton,
Frogmore, Deer Park, West Ferriday, Wildsville, Slocum, New Era,
Mayna, Spokane, Sibley, Wallace Ridge, Acme, Archie and Walters.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3186 9199 3165 9127 3163 9123 3162 9115
3135 9116 3136 9121 3137 9122 3136 9126
3137 9127 3131 9143 3132 9147 3129 9147
3128 9150 3122 9176 3126 9185 3129 9189
3129 9193 3132 9200
FLASH FLOOD...OBSERVED
$$
JNENearby
Flash Flood Warnings in Louisiana, 2021Flash Flood Warnings in Mississippi, 2021Every flash flood warning in 2021
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.