Alert archive / Tennessee / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 49, NWS Nashville, TN

March 14, 2012Humphreys County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 14, 2012, 4:23 PM CDT for Humphreys County, Tennessee. It was in force for 37 min. 1 report 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: Mar 14, 2012, 4:23 PM CDT (21:23 UTC)
Expired: Mar 14, 2012, 5:00 PM CDT
In force: 37 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

County Humphreys County, TN

What was reported inside it

Time	Report	Where	Remark
Mar 14, 4:28 PM CDT	HAIL 1.25	10 S Mcewen, TN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.4 hours before the alert went out and 104 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: 486 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1099 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 17 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.

286 
WUUS54 KOHX 142123
SVROHX
TNC085-142200-
/O.NEW.KOHX.SV.W.0049.120314T2123Z-120314T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
423 PM CDT WED MAR 14 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HUMPHREYS COUNTY IN MIDDLE TENNESSEE...

* UNTIL 500 PM CDT

* AT 418 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS NEAR NEW
  JOHNSONVILLE...MOVING EAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MCEWEN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CONTAIN DAMAGING WINDS 58 MPH OR STRONGER...OR
HAIL ONE INCH OR LARGER. FOR YOUR SAFETY...TAKE SHELTER INSIDE A
BUILDING LOCATION NOW.

&&

LAT...LON 3614 8760 3597 8754 3595 8757 3595 8760
      3593 8763 3592 8768 3589 8771 3582 8790
      3589 8794 3594 8793 3594 8796 3601 8800
TIME...MOT...LOC 2123Z 248DEG 13KT 3594 8784

$$

FORECASTER:07

1 follow-up statement

672 
WWUS54 KOHX 142141
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
441 PM CDT WED MAR 14 2012

TNC085-142200-
/O.CON.KOHX.SV.W.0049.000000T0000Z-120314T2200Z/
HUMPHREYS TN-
441 PM CDT WED MAR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
HUMPHREYS COUNTY UNTIL 500 PM CDT...

AT 438 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 9 MILES SOUTH OF WAVERLY...MOVING EAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  MCEWEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3605 8788 3614 8760 3597 8754 3595 8757
      3595 8760 3593 8763 3592 8768 3589 8771
      3586 8781 3591 8787 3597 8791
TIME...MOT...LOC 2141Z 248DEG 13KT 3596 8777

$$

07

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 14, 4:25 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence	17 min
Mar 14, 4:45 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys	45 min
Mar 14, 5:10 PM CDT	Flash Flood Warning	OHX	Hickman	2 hr
Mar 14, 5:13 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Maury, Williamson	47 min
Mar 14, 5:27 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Humphreys	33 min
Mar 14, 5:51 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	24 min
Mar 14, 6:04 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Robertson, Sumner	26 min
Mar 14, 6:08 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson	23 min
Mar 14, 6:14 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Williamson	31 min
Mar 14, 6:29 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner	31 min
Mar 14, 6:36 PM CDT	Severe Thunderstorm Warning	OHX	Robertson, Sumner	39 min
Mar 14, 6:55 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	35 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2012 Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.