Alert archive / Tennessee / Flash Flood Warnings in 2011

Flash Flood Warning 2, NWS Nashville, TN

January 1, 2011Lawrence County, Tennessee

NWS Nashville, TN issued this flash flood warning at Jan 1, 2011, 1:03 AM CST for Lawrence 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, 1:03 AM CST (07:03 UTC)
Expired: Jan 1, 2011, 4:00 AM CST
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Flood severity: None

County Lawrence County, TN

The radar

The Northeast Alabama radar (KHTX), 124 km from the middle of the area, began a volume at 07:06 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, 7.1 hours before the alert went out and 120 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

502 
WGUS54 KOHX 010703
FFWOHX
TNC099-011000-
/O.NEW.KOHX.FF.W.0002.110101T0703Z-110101T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LAWRENCE COUNTY IN MIDDLE TENNESSEE...
  THIS INCLUDES THE CITY OF LAWRENCEBURG...

* UNTIL 400 AM CST

* AT 100 AM CST...HEAVY RAINFALL WAS OCCURRING ACROSS LAWRENCE 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 LORETTO AND
  LAWRENCEBURG.

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 3501 8761 3504 8761 3504 8759 3541 8757
      3540 8752 3542 8751 3543 8745 3547 8744
      3547 8733 3544 8721 3532 8721 3531 8724
      3530 8721 3524 8721 3518 8723 3517 8720
      3501 8722

$$

BOYD

1 follow-up statement

896 
WGUS74 KOHX 010915
FFSOHX

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

TNC099-011000-
/O.CON.KOHX.FF.W.0002.000000T0000Z-110101T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAWRENCE TN-
315 AM CST SAT JAN 1 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 AM CST FOR
LAWRENCE COUNTY...

AT 309 AM CST...TWO AND HALF TO THREE INCH RAINFALL AMOUNTS HAVE FALLEN
ACROSS LAWRENCE COUNTY SINCE JUST BEFORE MIDNIGHT. THE HEAVIER RAINFALL
RATES WILL BEGIN TO TAPER OFF DURING THE NEXT HOUR. AT THIS TIME DO NOT
PLAN TO EXTEND WARNING FOR LAWRENCE COUNTY PAST 4 AM CST.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ETHRIDGE.

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
CROSSING...OR WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3501 8761 3504 8761 3504 8759 3541 8757
      3540 8752 3542 8751 3543 8745 3547 8744
      3547 8733 3544 8721 3532 8721 3531 8724
      3530 8721 3524 8721 3518 8723 3517 8720
      3501 8722

$$

BOYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 1, 12:44 AM CST	Flash Flood Warning	OHX	Wayne	3 hr
Jan 1, 1:58 AM CST	Flash Flood Warning	OHX	Giles	3 hr
Jan 1, 5:32 AM CST	Flash Flood Warning	OHX	Cumberland, Fentress	3 hr
Jan 1, 9:34 AM CST	River Flood Warning	OHX	Bedford	14 hr

Nearby

Flash Flood Warnings in Tennessee, 2011 Every 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.