Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 75, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Aug 14, 2021, 7:48 PM CDT for Lamar 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
- Aug 14, 2021, 7:48 PM CDT (00:48 UTC)
- Expired
- Aug 14, 2021, 10:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
County Lamar County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 14, 8:28 PM CDT | FLASH FLOOD | 4 Ssw Bellevue, MS | WATER HAD COVERED PART OF WPA ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 0.8 hours before the alert went out and 108 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
- 849 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1405 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
313
WGUS54 KJAN 150048
FFWJAN
MSC073-150300-
/O.NEW.KJAN.FF.W.0075.210815T0048Z-210815T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
748 PM CDT Sat Aug 14 2021
The National Weather Service in Jackson has issued a
* Flash Flood Warning for...
Central Lamar County in southeastern Mississippi...
* Until 1000 PM CDT.
* At 748 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. The expected rainfall rate is 1 to 3 inches in 1
hour. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Hattiesburg and Pine Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3112 8959 3122 8958 3131 8956 3134 8945
3122 8940 3112 8946
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 1 HOUR
$$
TWThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 7:12 PM CDT | Special Weather Statement | JAN | Lamar | 48 min |
| Aug 14, 7:28 PM CDT | Special Weather Statement | JAN | Clay | 47 min |
| Aug 14, 7:56 PM CDT | Special Weather Statement | JAN | Clay | 49 min |
| Aug 14, 8:42 PM CDT | Special Weather Statement | JAN | Webster | 33 min |
| Aug 14, 8:43 PM CDT | Special Weather Statement | JAN | Oktibbeha | 47 min |
| Aug 14, 9:02 PM CDT | Special Weather Statement | JAN | Clarke | 43 min |
| Aug 14, 9:17 PM CDT | Special Weather Statement | JAN | Webster | 43 min |
| Aug 14, 9:26 PM CDT | Special Weather Statement | JAN | Jefferson Davis | 34 min |
| Aug 14, 9:49 PM CDT | Special Weather Statement | JAN | Clarke | 41 min |
| Aug 15, 1:21 PM CDT | Special Weather Statement | JAN | Forrest | 24 min |
| Aug 15, 1:28 PM CDT | Special Weather Statement | JAN | Holmes | 32 min |
| Aug 15, 3:32 PM CDT | Special Weather Statement | JAN | Madison | 43 min |
| Aug 15, 6:24 PM CDT | Flash Flood Warning | JAN | Scott, Smith | 2 hr |
Nearby
Flash 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.