Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 90, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at Aug 30, 2021, 8:33 AM CDT for 8 counties in Mississippi. It was in force for 4 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 30, 2021, 8:33 AM CDT (13:33 UTC)
- Expired
- Aug 30, 2021, 12:18 PM CDT
- In force
- 4 hr
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Covington County, MS, Hinds County, MS, Jasper County, MS, Jones County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 26 km from the middle of the area, began a volume at 13:37 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 |
|---|---|---|---|
| Aug 30, 12:00 PM CDT | FLASH FLOOD | 3 Nnw Burns, MS | FLOODING CAUSED A WASHOUT ON SMITH CO RD 559. |
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, 1.6 hours before the alert went out and 35 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
- 49 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 463 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 387 m²/s²
- 0-3 km storm-relative helicity
- 547 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
906
WGUS54 KJAN 301333
FFWJAN
MSC031-049-061-067-121-123-127-129-301745-
/O.NEW.KJAN.FF.W.0090.210830T1333Z-210830T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
Issued by National Weather Service Huntsville AL
833 AM CDT Mon Aug 30 2021
The National Weather Service in Jackson has issued a
* Flash Flood Warning for...
Southeastern Hinds County in central Mississippi...
Southern Rankin County in central Mississippi...
Southeastern Scott County in central Mississippi...
East Central Simpson County in central Mississippi...
Smith County in central Mississippi...
West Central Jasper County in east central Mississippi...
North Central Covington County in southeastern Mississippi...
Northwestern Jones County in southeastern Mississippi...
* Until 1245 PM CDT.
* At 833 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across most of Smith and
southern portions of Rankin County. Between 2 and 5 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in the
next 1 hour. Additional rainfall amounts of 1 to 2 inches are
possible across Smith and southern portions of Rankin County.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
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...
Jackson, Star, Florence, Raleigh, Taylorsville, White Oak, Burns,
Johns, Cato, Center Ridge, Pineville, Piney Woods, Monterey,
Whites, Polkville, Mize, Puckett and Sylvarena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3218 9025 3222 9018 3223 8932 3222 8932
3180 8932 3178 8966 3205 8966 3205 8975
3205 9023 3215 9025
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$2 follow-up statements
646
WGUS74 KJAN 301629
FFSJAN
Flash Flood Statement
National Weather Service Jackson MS
Issued by National Weather Service Shreveport LA
1129 AM CDT Mon Aug 30 2021
MSC031-049-061-067-121-123-127-129-301745-
/O.CON.KJAN.FF.W.0090.000000T0000Z-210830T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Covington MS-Hinds MS-Jasper MS-Jones MS-Rankin MS-Scott MS-Simpson
MS-Smith MS-
1129 AM CDT Mon Aug 30 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT THIS
AFTERNOON FOR SOUTHEASTERN HINDS, SOUTHERN RANKIN, SOUTHEASTERN
SCOTT, EAST CENTRAL SIMPSON, SMITH, WEST CENTRAL JASPER, NORTH
CENTRAL COVINGTON AND NORTHWESTERN JONES COUNTIES...
At 1129 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 3
and 5 inches of rain have fallen. Additional rainfall amounts of 1
to 2 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Jackson, Star, Florence, Raleigh, Taylorsville, White Oak, Burns,
Johns, Cato, Center Ridge, Pineville, Piney Woods, Monterey,
Whites, Polkville, Mize, Puckett and Sylvarena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3218 9025 3222 9018 3222 8932 3180 8932
3178 8966 3204 8966 3204 8975 3204 9023
3215 9025
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
04084
WGUS74 KJAN 301718
FFSJAN
Flash Flood Statement
National Weather Service Jackson MS
Issued by National Weather Service Shreveport LA
1218 PM CDT Mon Aug 30 2021
MSC031-049-061-067-121-123-127-129-301728-
/O.CAN.KJAN.FF.W.0090.000000T0000Z-210830T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Covington MS-Hinds MS-Jasper MS-Jones MS-Rankin MS-Scott MS-Simpson
MS-Smith MS-
1218 PM CDT Mon Aug 30 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN HINDS, SOUTHERN
RANKIN, SOUTHEASTERN SCOTT, EAST CENTRAL SIMPSON, SMITH, WEST
CENTRAL JASPER, NORTH CENTRAL COVINGTON AND NORTHWESTERN JONES
COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3218 9025 3222 9018 3222 8932 3180 8932
3178 8966 3204 8966 3204 8975 3204 9023
3215 9025
$$The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 3:32 AM CDT | Flash Flood Warning | JAN | Forrest, Lamar, Marion | 6 hr |
| Aug 30, 5:35 AM CDT | Flash Flood Warning | JAN | Lawrence, Lincoln | 3 hr |
| Aug 30, 6:00 AM CDT | Flash Flood Warning | JAN | Covington, Jefferson Davis | 4 hr |
| Aug 30, 6:41 AM CDT | Flash Flood Warning | JAN | Copiah, Simpson | 4 hr |
| Aug 30, 7:08 AM CDT | Flash Flood Warning | JAN | Jones | 4 hr |
| Aug 30, 8:14 AM CDT | Flash Flood Warning | JAN | Rankin, Smith | 4 hr |
| Aug 30, 8:21 AM CDT | Flash Flood Warning | JAN | Rankin, Smith | 4 hr |
| Aug 30, 12:38 PM CDT | Special Weather Statement | JAN | Madison | 22 min |
| Aug 30, 3:17 PM CDT | Flash Flood Warning | JAN | Lauderdale | 118 min |
| Aug 30, 4:33 PM CDT | Flash Flood Warning | JAN | Kemper, Noxubee | 2 hr |
| Aug 30, 5:01 PM CDT | Flash Flood Warning | JAN | Clarke, Lauderdale | 3 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; radar from the NEXRAD Level II archive.