Alert archive / Tennessee / Flash Flood Warnings in 2018
Flash Flood Warning 21, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Mar 1, 2018, 7:25 AM CST for 4 counties in Arkansas; 5 counties in Tennessee. 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
- Mar 1, 2018, 7:25 AM CST (13:25 UTC)
- Expired
- Mar 1, 2018, 10:30 AM CST
- In force
- 3 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Crittenden County, AR, Cross County, AR, Mississippi County, AR, St. Francis County, AR, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 32 km from the middle of the area, began a volume at 13:28 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 (KBYH), launched 12:00Z, 1.4 hours before the alert went out and 38 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- -231 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
689
WGUS54 KMEG 011325
FFWMEG
ARC035-037-093-123-TNC047-069-075-157-167-011630-
/O.NEW.KMEG.FF.W.0021.180301T1325Z-180301T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
725 AM CST THU MAR 1 2018
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
St. Francis County in eastern Arkansas...
Southwestern Mississippi County in eastern Arkansas...
Crittenden County in eastern Arkansas...
Cross County in eastern Arkansas...
Tipton County in southwestern Tennessee...
Fayette County in southwestern Tennessee...
Hardeman County in southwestern Tennessee...
Southern Haywood County in southwestern Tennessee...
Shelby County in southwestern Tennessee...
* Until 1030 AM CST
* At 724 AM CST...Doppler Radar estimates 1 to 3 inches of rain has
occurred over the past 6 hours. Showers and thunderstorms will
produce an additional 1 to 2 inches of rain over the next 3 hours,
which will continue the flash flood threat.
* Some locations that will experience flooding include...
Bartlett, Collierville, Germantown, West Memphis, Forrest City,
Marion, Brownsville, Millington, Covington, Wynne, Bolivar, Earle,
Hughes, Parkin, Madison, Palestine, Village Creek State Park,
Chickasaw State Forest, Cordova and T O Fuller State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3500 9115 3500 9105 3532 9104 3548 9009
3539 9005 3549 9004 3564 8907 3543 8908
3543 8884 3504 8879 3501 8885 3500 9028
3499 9031 3497 9029 3485 9033 3486 9041
3490 9041 3491 9115
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 10:19 PM CST | Areal Flood Warning | MEG | Crittenden, Cross, Lee, St. Francis | 12 hr |
| Mar 1, 12:36 AM CST | Areal Flood Warning | MEG | Mississippi | 9 hr |
| Mar 1, 1:27 AM CST | Flash Flood Warning | MEG | Crittenden, Cross, Lee, St. Francis | 6 hr |
| Mar 1, 1:37 AM CST | Flash Flood Warning | MEG | Crittenden, Lee, Phillips | 6 hr |
| Mar 1, 1:47 AM CST | Flash Flood Warning | MEG | Mississippi | 6 hr |
| Mar 1, 7:29 AM CST | Flash Flood Warning | MEG | Lee, Phillips | 3 hr |
| Mar 1, 2:01 AM CST | Flash Flood Warning | MEG | Carroll, Chester, Decatur, Hardeman, Hardin, Henderson and 2 more | 9 hr |
Nearby
Flash Flood Warnings in Tennessee, 2018Flash Flood Warnings in Arkansas, 2018Every flash flood warning in 2018
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.