Alert archive / Tennessee / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 310, NWS Nashville, TN

August 1, 20125 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 1, 2012, 5:22 PM CDT for 5 counties in Tennessee. It was in force for 53 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: Aug 1, 2012, 5:22 PM CDT (22:22 UTC)
Expired: Aug 1, 2012, 6:15 PM CDT
In force: 53 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Dickson County, TN, Houston County, TN, Humphreys County, TN, Montgomery County, TN, Stewart County, TN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 1, 2:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.4 hours before the alert went out and 96 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: 1698 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1123 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

552 
WUUS54 KOHX 012222
SVROHX
TNC043-083-085-125-161-012315-
/O.NEW.KOHX.SV.W.0310.120801T2222Z-120801T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
522 PM CDT WED AUG 1 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  STEWART COUNTY IN MIDDLE TENNESSEE...
  NORTHWESTERN DICKSON COUNTY IN MIDDLE TENNESSEE...
  HOUSTON COUNTY IN MIDDLE TENNESSEE...
  NORTHEASTERN HUMPHREYS COUNTY IN MIDDLE TENNESSEE...
  SOUTHWESTERN MONTGOMERY COUNTY IN MIDDLE TENNESSEE...

* UNTIL 615 PM CDT

* AT 518 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 DOVER...
  MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TENNESSEE RIDGE...
  ERIN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2. DO NOT
STAY OUTDOORS IF YOU ARE IN THE PATH OF SEVERE THUNDERSTORMS.

THIS SEVERE THUNDERSTORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS
AND LARGE DAMAGING HAIL.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM WEDNESDAY
EVENING FOR CENTRAL TENNESSEE.

&&

LAT...LON 3627 8730 3608 8756 3647 8801 3664 8780
      3664 8777
TIME...MOT...LOC 2221Z 308DEG 14KT 3649 8773

$$

FORECASTER:BOYD

1 follow-up statement

500 
WWUS54 KOHX 012245
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
545 PM CDT WED AUG 1 2012

TNC043-083-085-125-161-012315-
/O.CON.KOHX.SV.W.0310.000000T0000Z-120801T2315Z/
STEWART TN-DICKSON TN-HOUSTON TN-HUMPHREYS TN-MONTGOMERY TN-
545 PM CDT WED AUG 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
MONTGOMERY...NORTHEASTERN HUMPHREYS...EASTERN HOUSTON...NORTHWESTERN
DICKSON AND EASTERN STEWART COUNTIES UNTIL 615 PM CDT...

AT 541 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES
EAST OF DOVER...MOVING SOUTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT CUMBERLAND CITY...AND MANY 
RURAL AREAS OF EASTERN HOUSTON...EASTERN STEWART...NORTHEASTERN 
HUMPHREYS...NORTHWESTERN DICKSON AND SOUTHWESTERN MONTGOMERY 
COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURE'S LEADING KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 3647 8790 3658 8780 3658 8770 3627 8730
      3608 8756
TIME...MOT...LOC 2245Z 319DEG 16KT 3645 8767

$$

AL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 1:54 AM CDT	Special Weather Statement	OHX	Davidson	36 min
Aug 1, 1:32 PM CDT	Special Weather Statement	OHX	Fentress, Overton, Pickett	58 min
Aug 1, 1:51 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Overton, Pickett	24 min
Aug 1, 2:18 PM CDT	Special Weather Statement	OHX	Fentress	27 min
Aug 1, 2:55 PM CDT	Special Weather Statement	OHX	Fentress, Overton, Pickett	50 min
Aug 1, 3:20 PM CDT	Special Weather Statement	OHX	Sumner	40 min
Aug 1, 3:28 PM CDT	Special Weather Statement	OHX	Cumberland	32 min
Aug 1, 3:35 PM CDT	Special Weather Statement	OHX	Overton	40 min
Aug 1, 3:35 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	25 min
Aug 1, 3:42 PM CDT	Special Weather Statement	OHX	Jackson	48 min
Aug 1, 3:43 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton, Putnam	32 min
Aug 1, 3:58 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	29 min
Aug 1, 4:02 PM CDT	Special Weather Statement	OHX	Cumberland	28 min
Aug 1, 4:12 PM CDT	Special Weather Statement	OHX	Montgomery	48 min
Aug 1, 4:24 PM CDT	Special Weather Statement	OHX	Overton	36 min
Aug 1, 4:35 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	40 min
Aug 1, 4:36 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Montgomery, Stewart	54 min
Aug 1, 5:03 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	27 min
Aug 1, 5:25 PM CDT	Special Weather Statement	OHX	Davidson	50 min
Aug 1, 5:29 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	46 min
Aug 1, 5:45 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence	30 min
Aug 1, 6:06 PM CDT	Special Weather Statement	OHX	Cheatham	39 min
Aug 1, 6:08 PM CDT	Special Weather Statement	OHX	Coffee, Grundy	52 min
Aug 1, 6:09 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Wilson	36 min
Aug 1, 6:12 PM CDT	Special Weather Statement	OHX	Maury	48 min
Aug 1, 6:15 PM CDT	Special Weather Statement	OHX	Giles	45 min
Aug 1, 6:19 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Maury	26 min
Aug 1, 6:31 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy	44 min
Aug 1, 6:34 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	41 min
Aug 1, 6:41 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman	34 min
Aug 1, 6:43 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury	12 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; the sounding from the Mesonet's radiosonde archive.