Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 73, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Aug 2, 2021, 4:13 PM CDT for Forrest County, 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 2, 2021, 4:13 PM CDT (21:13 UTC)
- Expired
- Aug 2, 2021, 6:15 PM CDT
- In force
- 2 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Forrest County, MS, Lamar County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 2, 5:01 PM CDT | FLASH FLOOD | Purvis, MS | SOCIAL MEDIA PICTURE OF WATER FLOWING ACROSS OLD RICHBURG 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 12:00Z, 9.2 hours before the alert went out and 95 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
- 2142 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 743 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
321
WGUS54 KJAN 022113
FFWJAN
MSC035-073-022315-
/O.NEW.KJAN.FF.W.0073.210802T2113Z-210802T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
413 PM CDT Mon Aug 2 2021
The National Weather Service in Jackson has issued a
* Flash Flood Warning for...
Southeastern Forrest County in southeastern Mississippi...
Southeastern Lamar County in southeastern Mississippi...
* Until 615 PM CDT.
* At 413 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3.5 and 4 inches of
rain have fallen. The expected rainfall rate is 2 to 4 inches in 1
hour. Additional rainfall amounts of 2 to 3 inches are possible in
the warned area. Flash flooding is already occurring.
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...
Purvis, Rock Hill and Brooklyn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3113 8951 3117 8938 3105 8915 3104 8915
3100 8935 3101 8935 3101 8936 3101 8940
3101 8941 3102 8950
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-4 INCHES IN 1 HOUR
$$
JNEThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 7:21 PM CDT | Special Weather Statement | JAN | Clay, Lowndes | 24 min |
| Aug 1, 7:43 PM CDT | Special Weather Statement | JAN | Clarke | 47 min |
| Aug 1, 7:53 PM CDT | Special Weather Statement | JAN | Newton | 52 min |
| Aug 1, 8:03 PM CDT | Special Weather Statement | JAN | Clarke | 27 min |
| Aug 1, 8:27 PM CDT | Severe Thunderstorm Warning | JAN | Lauderdale, Newton | 48 min |
| Aug 1, 8:35 PM CDT | Special Weather Statement | JAN | Clarke | 25 min |
| Aug 1, 8:55 PM CDT | Special Weather Statement | JAN | Holmes | 50 min |
| Aug 1, 11:48 PM CDT | Special Weather Statement | JAN | Warren | 27 min |
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.