Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 81, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Aug 19, 2021, 6:17 PM CDT for 4 counties in Mississippi. It was in force for 41 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, 6:17 PM CDT (23:17 UTC)
- Expired
- Aug 19, 2021, 6:58 PM CDT
- In force
- 41 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Itawamba County, MS, Lee County, MS, Prentiss County, MS, Tishomingo County, MS
The radar
The Columbus AFB radar (KGWX), 63 km from the middle of the area, began a volume at 23:20 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, 11.3 hours before the alert went out and 156 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.
005
WGUS54 KMEG 192317
FFWMEG
MSC057-081-117-141-200145-
/O.NEW.KMEG.FF.W.0081.210819T2317Z-210820T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
617 PM CDT Thu Aug 19 2021
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
Northern Itawamba County in northeastern Mississippi...
Northeastern Lee County in northeastern Mississippi...
Southeastern Prentiss County in northeastern Mississippi...
Southeastern Tishomingo County in northeastern Mississippi...
* Until 845 PM CDT.
* At 617 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. 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...
Belmont, Mantachie, Sandy Springs, Golden, Moores Mill, Kirkville,
Dennis, Unity, Chapelville, Eggville and Bloody Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3432 8859 3442 8865 3453 8833 3460 8814
3458 8814 3450 8815 3449 8815 3446 8816
3445 8816
FLASH FLOOD...RADAR INDICATED
$$1 follow-up statement
542
WGUS74 KMEG 192358
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
658 PM CDT Thu Aug 19 2021
MSC057-081-117-141-200008-
/O.CAN.KMEG.FF.W.0081.000000T0000Z-210820T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Itawamba MS-Lee MS-Prentiss MS-Tishomingo MS-
658 PM CDT Thu Aug 19 2021
...FLASH FLOOD WARNING FOR NORTHERN ITAWAMBA, NORTHEASTERN LEE,
SOUTHEASTERN PRENTISS AND SOUTHEASTERN TISHOMINGO COUNTIES HAS BEEN
REPLACED WITH A FLOOD ADVISORY...
LAT...LON 3432 8859 3442 8865 3453 8833 3460 8814
3458 8814 3450 8815 3448 8815 3446 8816
3445 8816
$$
SWBThe office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 3:42 PM CDT | Special Weather Statement | MEG | Chickasaw | 33 min |
| Aug 19, 4:32 PM CDT | Special Weather Statement | MEG | Monroe | 28 min |
| Aug 19, 5:17 PM CDT | Areal Flood Advisory | MEG | Chickasaw, Itawamba, Lee, Monroe | 3 hr |
| Aug 19, 5:43 PM CDT | Areal Flood Advisory | MEG | Itawamba, Lee, Prentiss, Tishomingo | 34 min |
| Aug 19, 6:42 PM CDT | Areal Flood Advisory | MEG | Panola | 3 hr |
| Aug 19, 6:58 PM CDT | Areal Flood Advisory | MEG | Itawamba, Lee, Prentiss, Tishomingo | 107 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.