Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 22, NWS Jackson, MS
NWS Jackson, MS issued this flash flood warning at May 18, 2021, 7:39 PM CDT for Covington County, Simpson County, Smith County, Mississippi. It was in force for 93 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
- May 18, 2021, 7:39 PM CDT (00:39 UTC)
- Expired
- May 18, 2021, 9:12 PM CDT
- In force
- 93 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Covington County, MS, Simpson County, MS, Smith County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 66 km from the middle of the area, began a volume at 00:37 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.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 0.7 hours before the alert went out and 74 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
- 102 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 521 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
365
WGUS54 KJAN 190039
FFWJAN
MSC031-127-129-190245-
/O.NEW.KJAN.FF.W.0022.210519T0039Z-210519T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
739 PM CDT Tue May 18 2021
The National Weather Service in Jackson has issued a
* Flash Flood Warning for...
Southeastern Simpson County in central Mississippi...
Southwestern Smith County in central Mississippi...
Northwestern Covington County in southeastern Mississippi...
* Until 945 PM CDT.
* At 739 PM CDT, Doppler radar indicated heavy rain across the
warned area. Between 2 and 4 inches of rain have fallen. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Doppler radar.
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...
Magee, Mount Olive and Lone Star.
Additional rainfall amounts up to 1 inch are possible in the warned
area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3193 8974 3193 8973 3193 8971 3193 8959
3167 8959 3160 8972 3160 8973 3161 8973
3161 8974 3161 8976 3163 8976 3164 8976
3165 8976
FLASH FLOOD...RADAR INDICATED
$$
DL1 follow-up statement
657
WGUS74 KJAN 190212
FFSJAN
Flash Flood Statement
National Weather Service Jackson MS
912 PM CDT Tue May 18 2021
MSC031-127-129-190222-
/O.CAN.KJAN.FF.W.0022.000000T0000Z-210519T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Covington MS-Simpson MS-Smith MS-
912 PM CDT Tue May 18 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN SIMPSON,
SOUTHWESTERN SMITH AND NORTHWESTERN COVINGTON COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3193 8974 3193 8973 3193 8971 3193 8959
3167 8959 3160 8972 3160 8973 3161 8973
3161 8974 3161 8976 3163 8976 3164 8976
3165 8976
$$
DLNearby
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.