Alert archive / Tennessee / Flash Flood Warnings in 2012

Flash Flood Warning 9, NWS Nashville, TN

July 2, 2012Cumberland County, Van Buren County, White County, Tennessee

NWS Nashville, TN issued this flash flood warning at Jul 2, 2012, 7:34 PM CDT for Cumberland County, Van Buren County, White County, Tennessee. It was in force for 87 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 2, 2012, 7:34 PM CDT (00:34 UTC)
Expired
Jul 2, 2012, 9:01 PM CDT
In force
87 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Flood severity
None

Counties Cumberland County, TN, Van Buren County, TN, White County, TN

The radar

The Northeast Alabama radar (KHTX), 120 km from the middle of the area, began a volume at 00:36 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 00:00Z, 0.6 hours before the alert went out and 127 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 00:00Z on 2012-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1255 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 00:00Z on 2012-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
1255 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1533 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

780 
WGUS54 KOHX 030034 CCA
FFWOHX
TNC035-175-185-030630-
/O.NEW.KOHX.FF.W.0009.120703T0034Z-120703T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTION TO PREVIOUS WARNING IN 
ORDER TO INCLUDE VAN BUREN COUNTY.
NATIONAL WEATHER SERVICE NASHVILLE TN
734 PM CDT MON JUL 2 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN VAN BUREN COUNTY IN MIDDLE TENNESSEE...
  SOUTHEASTERN WHITE COUNTY IN MIDDLE TENNESSEE...
  SOUTHWESTERN CUMBERLAND COUNTY IN MIDDLE TENNESSEE...

* UNTIL 130 AM CDT

* AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE    
  WARNED AREA. LOCALIZED AREAS MAY SEE RAINFALL TOTALS 
  ANYWHERE FROM 2 TO 4 INCHES OVER A SHORT PERIOD OF TIME.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
NASHVILLE.

&&

LAT...LON 3576 8517 3576 8525 3572 8526 3568 8530
      3568 8531 3580 8536 3591 8536 3588 8518

$$

11
1 follow-up statement
304 
WGUS74 KOHX 030201
FFSOHX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
901 PM CDT MON JUL 2 2012

TNC035-175-185-030216-
/O.CAN.KOHX.FF.W.0009.000000T0000Z-120703T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VAN BUREN TN-WHITE TN-CUMBERLAND TN-
901 PM CDT MON JUL 2 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHWESTERN
CUMBERLAND...SOUTHEASTERN WHITE AND NORTHEASTERN VAN BUREN COUNTIES
IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3576 8517 3576 8525 3572 8526 3568 8530
      3568 8531 3580 8536 3591 8536 3588 8518

$$

11

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 7:27 PM CDTFlash Flood WarningOHXCumberland, White95 min
Jul 3, 12:25 PM CDTSpecial Weather StatementOHXCumberland50 min
Jul 3, 12:43 PM CDTSpecial Weather StatementOHXFentress47 min
Jul 3, 1:27 PM CDTSpecial Weather StatementOHXFentress63 min
Jul 3, 2:47 PM CDTSpecial Weather StatementOHXPickett43 min
Jul 3, 5:14 PM CDTSpecial Weather StatementOHXStewart31 min

Nearby

Flash Flood Warnings in Tennessee, 2012Every flash flood warning in 2012

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.