Alert archive / Tennessee / Flash Flood Warnings in 2017

Flash Flood Warning 41, NWS Memphis, TN

June 18, 2017Carroll County, Gibson County, Weakley County, Tennessee

NWS Memphis, TN issued this flash flood warning at Jun 18, 2017, 3:44 PM CDT for Carroll County, Gibson County, Weakley County, Tennessee. It was in force for 3 hr. 3 reports 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
Jun 18, 2017, 3:44 PM CDT (20:44 UTC)
Expired
Jun 18, 2017, 6:45 PM CDT
In force
3 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Carroll County, TN, Gibson County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 113 km from the middle of the area, began a volume at 20:44 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

TimeReportWhereRemark
Jun 18, 3:57 PM CDTFLASH FLOOD1 Nnw Dyer, TNWATER OVER THE ROAD ON HIGHWAY 45 BETWEEN DYER AND RUTHERFORD.
Jun 18, 4:33 PM CDTFLASH FLOODTrenton, TNAPARTMENT COMPLEX BEING EVACUATED DUE TO FLOODING.
Jun 18, 5:01 PM CDTFLASH FLOODDyer, TNWATER COVERING THE ROAD ON HORSESHOE LOOP.

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 (KBYH), launched 12:00Z, 8.7 hours before the alert went out and 162 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.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2017-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2261 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2017-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2261 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
859 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

The text

As transmitted.

971 
WGUS54 KMEG 182044
FFWMEG
TNC017-053-183-182345-
/O.NEW.KMEG.FF.W.0041.170618T2044Z-170618T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
344 PM CDT SUN JUN 18 2017

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Southern Weakley County in west Tennessee...
  Central Gibson County in western Tennessee...
  Northwestern Carroll County in western Tennessee...

* Until 645 PM CDT

* At 344 PM CDT...Doppler Radar estimates 1 to 3 inches of rain has
  occurred over the past hour. Showers and thunderstorms will produce
  an additional 1 to 3 inches of rain over the next hour.

* Some locations that will experience flooding include...
  Milan, Trenton, Dyer, Greenfield, Rutherford, Bradford, Atwood,
  Yorkville, Tuckers Corner, Grizzard, Good Luck, Cades, New
  Enterprise, Central, Ledbetter, Currie, Staffords Store, Vaughns
  Grove, Barrons Corner and Gann.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3599 8918 3616 8906 3616 8859 3587 8873

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 2:10 PM CDTSevere Thunderstorm WarningMEGShelby50 min
Jun 18, 2:47 PM CDTSpecial Weather StatementMEGDyer43 min
Jun 18, 2:49 PM CDTSpecial Weather StatementMEGTipton41 min
Jun 18, 3:00 PM CDTSpecial Weather StatementMEGFayette30 min
Jun 18, 3:14 PM CDTSpecial Weather StatementMEGGibson, Weakley31 min
Jun 18, 3:27 PM CDTSpecial Weather StatementMEGFayette, Hardeman33 min
Jun 18, 3:33 PM CDTSpecial Weather StatementMEGCrockett, Haywood, Madison27 min
Jun 18, 3:36 PM CDTFlash Flood WarningMEGDyer, Lake3 hr
Jun 18, 3:47 PM CDTSpecial Weather StatementMEGGibson28 min
Jun 18, 3:55 PM CDTSpecial Weather StatementMEGHardeman, McNairy50 min
Jun 18, 4:05 PM CDTFlash Flood WarningMEGLake3 hr
Jun 18, 4:46 PM CDTSpecial Weather StatementMEGHardin29 min

Nearby

Flash Flood Warnings in Tennessee, 2017Every flash flood warning in 2017

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.