Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 79, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Aug 19, 2021, 3:50 PM CDT for Clay County, Oktibbeha County, Mississippi. It was in force for 80 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2021, 3:50 PM CDT (20:50 UTC)
- Expired
- Aug 19, 2021, 5:10 PM CDT
- In force
- 80 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clay County, MS, Oktibbeha County, MS
The radar
The Columbus AFB radar (KGWX), 48 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.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 8.8 hours before the alert went out and 176 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
- 319 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 839 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
915
WGUS54 KJAN 192050
FFWJAN
MSC025-105-192345-
/O.NEW.KJAN.FF.W.0079.210819T2050Z-210819T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
350 PM CDT Thu Aug 19 2021
The National Weather Service in Jackson has issued a
* Flash Flood Warning for...
Clay County in northeastern Mississippi...
Northern Oktibbeha County in northeastern Mississippi...
* Until 645 PM CDT.
* At 350 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have already fallen. The expected rainfall rate is 1 to 2 inches
per hour. Additional rainfall amounts of 1 to 3 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...
West Point, Montpelier, Maben, Griffith, Pala Alto, Muldrow,
Pheba, Tibbee and Waverly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3375 8903 3375 8893 3381 8893 3381 8872
3368 8872 3368 8849 3366 8851 3361 8851
3360 8848 3356 8850 3352 8847 3352 8848
3355 8852 3352 8855 3351 8867 3349 8867
3351 8909 3356 8909 3356 8902
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
NF1 follow-up statement
108
WGUS74 KJAN 192210
FFSJAN
Flash Flood Statement
National Weather Service Jackson MS
510 PM CDT Thu Aug 19 2021
MSC025-105-192220-
/O.CAN.KJAN.FF.W.0079.000000T0000Z-210819T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay MS-Oktibbeha MS-
510 PM CDT Thu Aug 19 2021
...FLASH FLOOD WARNING IS CANCELLED FOR CLAY AND NORTHERN OKTIBBEHA
COUNTIES...
The heavy rain has ended, and flooding is no longer expected to pose
a threat. Please continue to heed remaining road closures.
LAT...LON 3375 8903 3375 8893 3381 8893 3381 8872
3368 8872 3368 8849 3366 8851 3361 8851
3360 8848 3356 8850 3352 8847 3352 8848
3355 8852 3352 8855 3351 8867 3349 8867
3351 8909 3356 8909 3356 8902
$$
NFThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:25 PM CDT | Special Weather Statement | JAN | Simpson | 50 min |
| Aug 18, 7:51 PM CDT | Special Weather Statement | JAN | Issaquena | 39 min |
| Aug 18, 8:22 PM CDT | Special Weather Statement | JAN | Rankin | 38 min |
| Aug 18, 8:25 PM CDT | Special Weather Statement | JAN | Issaquena | 50 min |
| Aug 18, 8:42 PM CDT | Special Weather Statement | JAN | Rankin | 33 min |
| Aug 18, 8:44 PM CDT | Special Weather Statement | JAN | Washington | 46 min |
| Aug 18, 9:20 PM CDT | Special Weather Statement | JAN | Washington | 40 min |
| Aug 18, 9:47 PM CDT | Special Weather Statement | JAN | Bolivar | 43 min |
| Aug 19, 1:42 PM CDT | Special Weather Statement | JAN | Winston | 33 min |
| Aug 19, 2:18 PM CDT | Special Weather Statement | JAN | Noxubee | 27 min |
| Aug 19, 3:16 PM CDT | Flash Flood Warning | JAN | Lowndes | 3 hr |
| Aug 19, 3:25 PM CDT | Severe Thunderstorm Warning | JAN | Oktibbeha | 35 min |
| Aug 19, 6:15 PM CDT | Special Weather Statement | JAN | Scott | 30 min |
| Aug 19, 6:38 PM CDT | Special Weather Statement | JAN | Bolivar, Carroll, Holmes, Leflore, Sunflower | 52 min |
| Aug 19, 6:43 PM CDT | Special Weather Statement | JAN | Jones | 62 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.