Alert archive / Tennessee / Flash Flood Warnings in 2016

Flash Flood Warning 149, NWS Memphis, TN

August 26, 2016Decatur County, Hardin County, Henderson County, Tennessee

NWS Memphis, TN issued this flash flood warning at Aug 26, 2016, 1:25 PM CDT for Decatur County, Hardin County, Henderson County, Tennessee. It was in force for 2 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 26, 2016, 1:25 PM CDT (18:25 UTC)
Expired
Aug 26, 2016, 3:30 PM CDT
In force
2 hr
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Flood severity
None

Counties Decatur County, TN, Hardin County, TN, Henderson County, TN

The radar

The Ft Campbell radar (KHPX), 157 km from the middle of the area, began a volume at 18:24 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

Nashville Metro, TN (KBNA), launched 12:00Z, 6.4 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.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2016-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1130 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, Nashville Metro, TN at 12:00Z on 2016-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 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
1130 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
-13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

335 
WGUS54 KMEG 261825
FFWMEG
TNC039-071-077-262030-
/O.NEW.KMEG.FF.W.0149.160826T1825Z-160826T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
125 PM CDT FRI AUG 26 2016

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DECATUR COUNTY IN WESTERN TENNESSEE...
  NORTHERN HARDIN COUNTY IN WESTERN TENNESSEE...
  SOUTHEASTERN HENDERSON COUNTY IN WESTERN TENNESSEE...

* UNTIL 330 PM CDT

* AT 125 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 2 HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PARSONS...DECATURVILLE...SARDIS...REAGAN...DARDEN...MONTGOMERY...
  SCOTTS HILL...SALTILLO...CHESTERFIELD...BATH SPRINGS...
  BUSSELTOWN...LICK SKILLET...THURMAN...BEACON...FIVE FORKS...
  RED WALNUT...WARRENS BLUFF...LARGO...PERRYVILLE AND MOUNT TABOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3539 8798 3539 8803 3535 8801 3532 8802
      3540 8836 3549 8836 3572 8835 3567 8802
      3562 8804 3552 8797 3551 8797 3548 8799
      3547 8802 3545 8804 3542 8803 3541 8797

$$
1 follow-up statement
595 
WGUS74 KMEG 261953
FFSMEG

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
253 PM CDT FRI AUG 26 2016

TNC039-071-077-262003-
/O.CAN.KMEG.FF.W.0149.000000T0000Z-160826T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DECATUR TN-HARDIN TN-HENDERSON TN-
253 PM CDT FRI AUG 26 2016

...THE FLASH FLOOD WARNING FOR DECATUR...NORTHERN HARDIN AND
SOUTHEASTERN HENDERSON COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOOD WATERS HAVE RECEDED. FLOODING IS NO
LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES.

LAT...LON 3539 8798 3539 8803 3535 8801 3532 8802
      3540 8836 3549 8836 3572 8835 3567 8802
      3562 8804 3552 8797 3551 8797 3548 8799
      3547 8802 3545 8804 3542 8803 3541 8797

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 12:40 PM CDTSpecial Weather StatementMEGMcNairy50 min
Aug 26, 3:21 PM CDTSpecial Weather StatementMEGCrockett, Gibson, Haywood24 min
Aug 26, 3:43 PM CDTSpecial Weather StatementMEGLauderdale, Tipton32 min
Aug 26, 4:08 PM CDTSevere Thunderstorm WarningMEGHardin, McNairy52 min

Nearby

Flash Flood Warnings in Tennessee, 2016Every flash flood warning in 2016

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.