Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 80, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Aug 18, 2021, 4:23 PM CDT for Tishomingo County, Mississippi. It was in force for 3 hr. 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 18, 2021, 4:23 PM CDT (21:23 UTC)
- Expired
- Aug 18, 2021, 7:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
County Tishomingo County, MS
The radar
The Columbus AFB radar (KGWX), 102 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 151 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
- 1042 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 701 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.1
The text
As transmitted.
208
WGUS54 KMEG 182123
FFWMEG
MSC141-190030-
/O.NEW.KMEG.FF.W.0080.210818T2123Z-210819T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
423 PM CDT Wed Aug 18 2021
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
Northern Tishomingo County in northeastern Mississippi...
* Until 730 PM CDT.
* At 423 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 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.
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...
Iuka, J P Coleman State Park, Burnsville, Leedy, Hazard Switch,
Walker Siding, Doskie, Holts Spur, Bacon Springs and Holcut.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3481 8837 3490 8831 3497 8818 3491 8815
3489 8810 3471 8831 3472 8833 3474 8833
3474 8835 3476 8835 3476 8836
FLASH FLOOD...RADAR INDICATED
$$2 follow-up statements
390
WGUS74 KMEG 182211
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
511 PM CDT Wed Aug 18 2021
MSC141-190030-
/O.CON.KMEG.FF.W.0080.000000T0000Z-210819T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tishomingo MS-
511 PM CDT Wed Aug 18 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT THIS
EVENING FOR NORTHERN TISHOMINGO COUNTY...
At 511 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 2 inches of rain have
fallen. Additional rainfall amounts up to 1 inch are possible in the
warned area. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms and runoff.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Iuka, J P Coleman State Park, Burnsville, Leedy, Hazard Switch,
Walker Siding, Doskie, Holts Spur, Bacon Springs and Holcut.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3481 8837 3490 8831 3497 8818 3491 8815
3489 8810 3471 8831 3472 8833 3474 8833
3474 8835 3476 8835 3476 8836
FLASH FLOOD...RADAR INDICATED
$$276
WGUS74 KMEG 190028
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
728 PM CDT Wed Aug 18 2021
MSC141-190038-
/O.EXP.KMEG.FF.W.0080.000000T0000Z-210819T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tishomingo MS-
728 PM CDT Wed Aug 18 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 730 PM CDT THIS EVENING FOR
NORTHERN TISHOMINGO COUNTY...
The heavy rain has ended. However, any runoff could pose an
additional threat. Please continue to heed remaining road closures.
LAT...LON 3481 8837 3490 8831 3497 8818 3491 8815
3489 8810 3471 8831 3472 8833 3474 8833
3474 8835 3476 8835 3476 8836
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 3:22 AM CDT | Areal Flood Advisory | MEG | Panola | 113 min |
| Aug 18, 8:24 AM CDT | Areal Flood Advisory | MEG | Marshall | 2 hr |
| Aug 18, 10:44 AM CDT | Special Weather Statement | MEG | Lafayette | 31 min |
| Aug 18, 12:07 PM CDT | Special Weather Statement | MEG | Tunica | 38 min |
| Aug 18, 12:46 PM CDT | Special Weather Statement | MEG | Quitman | 29 min |
| Aug 18, 1:28 PM CDT | Special Weather Statement | MEG | Panola | 32 min |
| Aug 18, 1:35 PM CDT | Special Weather Statement | MEG | Tate | 25 min |
| Aug 18, 1:49 PM CDT | Areal Flood Advisory | MEG | Panola, Tate | 2 hr |
| Aug 18, 2:02 PM CDT | Special Weather Statement | MEG | Lafayette | 28 min |
| Aug 18, 2:48 PM CDT | Special Weather Statement | MEG | Calhoun, Chickasaw | 27 min |
| Aug 18, 3:19 PM CDT | Special Weather Statement | MEG | Pontotoc | 26 min |
| Aug 18, 3:52 PM CDT | Special Weather Statement | MEG | Prentiss | 38 min |
| Aug 18, 4:18 PM CDT | Flash Flood Warning | MEG | Alcorn, Prentiss, Tippah | 3 hr |
| Aug 18, 6:20 PM CDT | Special Weather Statement | MEG | Chickasaw | 25 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.