Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 77, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Aug 14, 2021, 7:54 PM CDT for Calhoun County, Yalobusha County, Mississippi. It was in force for 4 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 14, 2021, 7:54 PM CDT (00:54 UTC)
- Expired
- Aug 15, 2021, 12:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Calhoun County, MS, Yalobusha County, MS
The radar
The Columbus AFB radar (KGWX), 111 km from the middle of the area, began a volume at 00:56 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 00:00Z, 0.9 hours before the alert went out and 103 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
- 1185 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1097 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
410
WGUS54 KMEG 150054
FFWMEG
MSC013-161-150400-
/O.NEW.KMEG.FF.W.0077.210815T0054Z-210815T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
Issued by National Weather Service Little Rock AR
754 PM CDT Sat Aug 14 2021
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
Western Calhoun County in northeastern Mississippi...
Eastern Yalobusha County in northwestern Mississippi...
* Until 1100 PM CDT.
* At 754 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...
Water Valley, Bruce, Calhoun City, Derma, Pittsboro, Banner, Big
Creek, Skuna, Ellard, Shepherd, Benwood, Bounds, Tyson, Pine
Valley, Retreat, Spearman, Gums, Sarepta and Bryant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3389 8977 3402 8961 3413 8965 3416 8972
3416 8925 3407 8925 3392 8923 3381 8926
3384 8951 3387 8951 3387 8977
FLASH FLOOD...RADAR INDICATED
$$2 follow-up statements
564
WGUS74 KMEG 150218
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
Issued by National Weather Service Little Rock AR
918 PM CDT Sat Aug 14 2021
MSC013-161-150400-
/O.CON.KMEG.FF.W.0077.000000T0000Z-210815T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calhoun MS-Yalobusha MS-
918 PM CDT Sat Aug 14 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 PM CDT THIS
EVENING FOR WESTERN CALHOUN AND EASTERN YALOBUSHA COUNTIES...
At 918 PM CDT, Doppler radar indicated nearly stationary
thunderstorms producing heavy rain across the warned area. Between 3
and 5 inches of rain has fallen across portions of central and
northwest Calhoun County. Flash flooding is ongoing or expected to
begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Water Valley, Bruce, Calhoun City, Derma, Pittsboro, Banner, Big
Creek, Skuna, Ellard, Shepherd, Benwood, Bounds, Tyson, Pine
Valley, Retreat, Spearman, Gums, Sarepta and Bryant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3389 8977 3402 8961 3413 8965 3416 8972
3416 8925 3407 8925 3392 8923 3381 8926
3384 8951 3387 8951 3387 8977
FLASH FLOOD...RADAR INDICATED
$$383
WGUS54 KMEG 150313
FFWMEG
MSC013-161-150500-
/O.EXT.KMEG.FF.W.0077.000000T0000Z-210815T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
Issued by National Weather Service Little Rock AR
1013 PM CDT Sat Aug 14 2021
The National Weather Service in Memphis has extended the
* Flash Flood Warning for...
Western Calhoun County in northeastern Mississippi...
Eastern Yalobusha County in northwestern Mississippi...
* Until midnight CDT.
* At 1013 PM CDT, Doppler radar continues to indicate nearly
stationary thunderstorms producing heavy rainfall across the area.
Some locations across northwest and central Calhoun County have
received over 5 inches of rainfall over the past 3 hours.
Additional rainfall is expected through midnight. Flash flooding
is likely ongoing in these areas.
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...
Water Valley, Bruce, Calhoun City, Derma, Pittsboro, Banner, Big
Creek, Skuna, Ellard, Shepherd, Benwood, Bounds, Tyson, Pine
Valley, Retreat, Spearman, Gums, Sarepta and Bryant.
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 3389 8977 3402 8961 3413 8965 3416 8972
3416 8925 3407 8925 3392 8923 3381 8926
3384 8951 3387 8951 3387 8977
FLASH FLOOD...RADAR INDICATED
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 7:23 PM CDT | Flash Flood Warning | MEG | Yalobusha | 5 hr |
| Aug 14, 7:32 PM CDT | Special Weather Statement | MEG | Monroe | 28 min |
| Aug 14, 8:10 PM CDT | Special Weather Statement | MEG | Lee | 35 min |
| Aug 15, 1:26 PM CDT | Areal Flood Advisory | MEG | Alcorn, Tishomingo | 4 hr |
| Aug 15, 1:26 PM CDT | Special Weather Statement | MEG | Tishomingo | 34 min |
| Aug 15, 3:36 PM CDT | Areal Flood Advisory | MEG | Prentiss, Tishomingo | 3 hr |
| Aug 15, 4:42 PM CDT | Areal Flood Advisory | MEG | Lafayette | 2 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.