Alert archive / Tennessee / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 313, NWS Nashville, TN

August 1, 2012Davidson County, Rutherford County, Wilson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 1, 2012, 6:09 PM CDT for Davidson County, Rutherford County, Wilson County, Tennessee. It was in force for 36 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, 6:09 PM CDT (23:09 UTC)
Expired: Aug 1, 2012, 6:45 PM CDT
In force: 36 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Davidson County, TN, Rutherford County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 30 km from the middle of the area, began a volume at 23:09 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 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, 11.2 hours before the alert went out and 17 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.

496 
WUUS54 KOHX 012309
SVROHX
TNC037-149-189-012345-
/O.NEW.KOHX.SV.W.0313.120801T2309Z-120801T2345Z/

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

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN RUTHERFORD COUNTY IN MIDDLE TENNESSEE...
  WEST CENTRAL WILSON COUNTY IN MIDDLE TENNESSEE...
  SOUTHEASTERN DAVIDSON COUNTY IN MIDDLE TENNESSEE...

* UNTIL 645 PM CDT

* AT 604 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 THE 
  NASHVILLE AIRPORT...MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RURAL HILL...
  LA VERGNE...
  SMYRNA...

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 WIND DAMAGE IN
NASHVILLE. TAKE SHELTER NOW INSIDE A STURDY BUILDING...AND STAY AWAY
FROM WINDOWS!

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

&&

LAT...LON 3606 8631 3582 8654 3592 8663 3593 8662
      3597 8663 3597 8662 3597 8665 3599 8669
      3611 8679 3621 8665
TIME...MOT...LOC 2308Z 309DEG 13KT 3610 8664

$$

FORECASTER:BOYD

1 follow-up statement

577 
WWUS54 KOHX 012324
SVSOHX

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

TNC189-012333-
/O.CAN.KOHX.SV.W.0313.000000T0000Z-120801T2345Z/
WILSON TN-
624 PM CDT WED AUG 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL WILSON COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED AREA.

LAT...LON 3603 8653 3583 8654 3583 8655 3592 8663
      3594 8662 3596 8663 3597 8662 3597 8665
      3600 8669 3607 8675 3610 8670
TIME...MOT...LOC 2323Z 309DEG 13KT 3607 8659

$$

TNC037-149-012345-
/O.CON.KOHX.SV.W.0313.000000T0000Z-120801T2345Z/
RUTHERFORD TN-DAVIDSON TN-
624 PM CDT WED AUG 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
DAVIDSON AND NORTHWESTERN RUTHERFORD COUNTIES UNTIL 645 PM CDT...

AT 622 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED NEAR LA VERGNE...OR 13 MILES
SOUTHEAST OF NASHVILLE...MOVING SOUTHEAST AT 15 MPH. NICKEL SIZE HAIL
MAY ALSO ACCOMPANY THESE DAMAGING WINDS. SOME WEAKENING HAS TAKEN PLACE
DURING THE LAST 15 MINUTES.

LOCATIONS IMPACTED INCLUDE...
  LA VERGNE.

LAT...LON 3603 8653 3583 8654 3583 8655 3592 8663
      3594 8662 3596 8663 3597 8662 3597 8665
      3600 8669 3607 8675 3610 8670
TIME...MOT...LOC 2323Z 309DEG 13KT 3607 8659

$$

BOYD

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, 5:22 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery, Stewart	53 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, 6:12 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; radar from the NEXRAD Level II archive.