Alert archive / Mississippi / Flash Flood Warnings in 2021
Flash Flood Warning 86, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Sep 18, 2021, 7:56 PM CDT for Calhoun County, Lafayette County, Yalobusha County, Mississippi. It was in force for 3 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
- Sep 18, 2021, 7:56 PM CDT (00:56 UTC)
- Expired
- Sep 18, 2021, 11:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Calhoun County, MS, Lafayette County, MS, Yalobusha County, MS
The radar
The Columbus AFB radar (KGWX), 114 km from the middle of the area, began a volume at 00:57 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 |
|---|---|---|---|
| Sep 18, 9:08 PM CDT | FLASH FLOOD | 2 Nne Water Valley, MS | CR 391 IS FLOODED NORTH OF WATER VALLEY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 0.9 hours before the alert went out and 94 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
- 808 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- -62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
233
WGUS54 KMEG 190056
FFWMEG
MSC013-071-161-190400-
/O.NEW.KMEG.FF.W.0086.210919T0056Z-210919T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
756 PM CDT Sat Sep 18 2021
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
Western Calhoun County in northeastern Mississippi...
Southwestern Lafayette County in northwestern Mississippi...
Eastern Yalobusha County in northwestern Mississippi...
* Until 1100 PM CDT.
* At 756 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 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...
Water Valley, Paris, Springdale, Taylor, Big Creek, Pine Valley,
Skuna, Benwood, Tyson, Spearman, Bounds and Retreat.
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 3419 8967 3431 8969 3430 8951 3413 8945
3381 8936 3381 8951 3387 8951 3387 8961
FLASH FLOOD...RADAR INDICATED
$$2 follow-up statements
932
WGUS74 KMEG 190235
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
935 PM CDT Sat Sep 18 2021
MSC013-071-161-190400-
/O.CON.KMEG.FF.W.0086.000000T0000Z-210919T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calhoun MS-Lafayette MS-Yalobusha MS-
935 PM CDT Sat Sep 18 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 PM CDT THIS
EVENING FOR WESTERN CALHOUN, SOUTHWESTERN LAFAYETTE AND EASTERN
YALOBUSHA COUNTIES...
At 935 PM CDT, Between 2 and 4 inches of rain have fallen over the
last couple of hours. Showers and thunderstorms are diminishing and
additional rainfall amounts should be less than 0.5 inches. However,
runoff will continue after the rain stops. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Water Valley, Paris, Springdale, Taylor, Big Creek, Pine Valley,
Skuna, Benwood, Tyson, Spearman, Bounds and Retreat.
County Road 391 and Highway 328 near County Road 387 are flooded.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3419 8967 3431 8969 3430 8951 3413 8945
3381 8936 3381 8951 3387 8951 3387 8961
FLASH FLOOD...RADAR INDICATED
$$430
WGUS74 KMEG 190357
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
1057 PM CDT Sat Sep 18 2021
MSC013-071-161-190407-
/O.EXP.KMEG.FF.W.0086.000000T0000Z-210919T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calhoun MS-Lafayette MS-Yalobusha MS-
1057 PM CDT Sat Sep 18 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 11 PM CDT THIS EVENING FOR
WESTERN CALHOUN, SOUTHWESTERN LAFAYETTE AND EASTERN YALOBUSHA
COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 700 PM CDT Monday for
portions of North Mississippi and West Tennessee.
LAT...LON 3419 8967 3431 8969 3430 8951 3413 8945
3381 8936 3381 8951 3387 8951 3387 8961
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 7:13 PM CDT | Areal Flood Advisory | MEG | Calhoun, Lafayette, Yalobusha | 3 hr |
| Sep 19, 4:07 AM CDT | Areal Flood Advisory | MEG | Tishomingo | 3 hr |
| Sep 19, 6:06 AM CDT | Areal Flood Advisory | MEG | Coahoma, Panola, Quitman, Tallahatchie, Tunica, Yalobusha | 4 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.