Alert archive / Tennessee / Flash Flood Warnings in 2011

Flash Flood Warning 1, NWS Nashville, TN

January 1, 2011Wayne County, Tennessee

NWS Nashville, TN issued this flash flood warning at Jan 1, 2011, 12:44 AM CST for Wayne County, 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
Jan 1, 2011, 12:44 AM CST (06:44 UTC)
Expired
Jan 1, 2011, 3:30 AM CST
In force
3 hr
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Flood severity
None

County Wayne County, TN

The radar

The Nashville radar (KOHX), 155 km from the middle of the area, began a volume at 06:47 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, 6.7 hours before the alert went out and 143 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 2011-01-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2011-01-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 308 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1460 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
308 m²/s²
0-3 km storm-relative helicity
364 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.

188 
WGUS54 KOHX 010644
FFWOHX
TNC181-010930-
/O.NEW.KOHX.FF.W.0001.110101T0644Z-110101T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1244 AM CST SAT JAN 1 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WAYNE COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF WAYNESBORO...

* UNTIL 330 AM CST

* AT 1233 AM CST...HEAVY RAINFALL WAS OCCURRING IN WAYNE COUNTY WITH 
  MORE RAIN TO FOLLOW IN THE OVERNIGHT HOURS. RUNOFF FROM THE RAIN
  WILL QUICKLY FILL CREEKS AND STREAMS. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COLLINWOOD
  WAYNESBORO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 3502 8800 3530 8799 3531 8802 3539 8803
      3541 8797 3543 8802 3546 8799 3548 8783
      3550 8780 3550 8773 3548 8765 3545 8764
      3542 8757 3504 8759 3504 8761 3501 8761

$$

BOYD
2 follow-up statements
927 
WGUS74 KOHX 010837
FFSOHX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
237 AM CST SAT JAN 1 2011

TNC181-010930-
/O.CON.KOHX.FF.W.0001.000000T0000Z-110101T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE TN-
237 AM CST SAT JAN 1 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 AM CST FOR WAYNE
COUNTY...

AT 231 AM CST...COLDER SATELLITE CLOUD TOPS HAVE MOVED OVER SOUTHWEST MIDDLE
TENNESSEE. AS A RESULT THIS HAS ENHANCED RAINFALL RATES ACROSS WAYNE COUNTY.
RAINFALL TOTALS DURING THE LAST THREE HOURS HAVE TOTALED AROUND 3 INCHES
OVER A LARGE PART OF WAYNE COUNTY INCLUDING WAYNESBORO. THIS WARNING MAY
NEED TO BE EXTENDED IN TIME.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CLIFTON...AND
WAYNESBORO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING. DO NOT DRIVE ACROSS LOW WATER
CROSSINGS...OR WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3502 8800 3530 8799 3531 8802 3539 8803
      3541 8797 3543 8802 3546 8799 3548 8783
      3550 8780 3550 8773 3548 8765 3545 8764
      3542 8757 3504 8759 3504 8761 3501 8761

$$

BOYD
741 
WGUS74 KOHX 010926
FFSOHX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
326 AM CST SAT JAN 1 2011

TNC181-010935-
/O.EXP.KOHX.FF.W.0001.000000T0000Z-110101T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE TN-
326 AM CST SAT JAN 1 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 330 AM CST FOR WAYNE
COUNTY...

THE HEAVIER RAINFALL THAT PROMPTED THE WARNING HAS MOVED EAST OF 
THE AREA.

LAT...LON 3502 8800 3530 8799 3531 8802 3539 8803
      3541 8797 3543 8802 3546 8799 3548 8783
      3550 8780 3550 8773 3548 8765 3545 8764
      3542 8757 3504 8759 3504 8761 3501 8761

$$

BOYD

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 1, 1:03 AM CSTFlash Flood WarningOHXLawrence3 hr
Jan 1, 1:58 AM CSTFlash Flood WarningOHXGiles3 hr
Jan 1, 5:32 AM CSTFlash Flood WarningOHXCumberland, Fentress3 hr
Jan 1, 9:34 AM CSTRiver Flood WarningOHXBedford14 hr

Nearby

Flash Flood Warnings in Tennessee, 2011Every flash flood warning in 2011

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.