Alert archive / Tennessee / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 340, NWS Nashville, TN

August 13, 2012Wayne County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 13, 2012, 11:03 AM CDT for Wayne County, Tennessee. It was in force for 27 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 13, 2012, 11:03 AM CDT (16:03 UTC)
Expired
Aug 13, 2012, 11:30 AM CDT
In force
27 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon

County Wayne County, TN

The radar

The Columbus AFB radar (KGWX), 152 km from the middle of the area, began a volume at 16:02 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 12:00Z, 4.1 hours before the alert went out and 149 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 12:00Z on 2012-08-13Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2012-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.193958Sfc1 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
1430 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
107 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.

001 
WUUS54 KOHX 131603
SVROHX
TNC181-131630-
/O.NEW.KOHX.SV.W.0340.120813T1603Z-120813T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1103 AM CDT MON AUG 13 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WAYNE COUNTY IN MIDDLE TENNESSEE...

* UNTIL 1130 AM CDT

* AT 1102 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH. THE STORM WAS NEAR OLIVE HILL...MOVING EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WAYNESBORO...

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.

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.

&&

LAT...LON 3501 8799 3539 8800 3540 8798 3542 8799
      3544 8760 3515 8758 3514 8759 3504 8758
      3503 8760 3502 8761
TIME...MOT...LOC 1603Z 267DEG 31KT 3527 8781

$$

FORECASTER:07

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 8:45 AM CDTSpecial Weather StatementOHXStewart45 min
Aug 13, 9:08 AM CDTSpecial Weather StatementOHXHouston52 min
Aug 13, 9:28 AM CDTSpecial Weather StatementOHXMontgomery47 min
Aug 13, 9:32 AM CDTSevere Thunderstorm WarningOHXMontgomery28 min
Aug 13, 10:00 AM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Robertson30 min
Aug 13, 10:28 AM CDTSpecial Weather StatementOHXCheatham, Davidson, Hickman, Maury, Williamson62 min
Aug 13, 10:30 AM CDTSevere Thunderstorm WarningOHXMacon, Robertson, Sumner, Trousdale45 min
Aug 13, 10:54 AM CDTSevere Thunderstorm WarningOHXDavidson, Rutherford, Sumner, Wilson51 min
Aug 13, 11:34 AM CDTSpecial Weather StatementOHXCannon, Rutherford, Smith, Wilson41 min
Aug 13, 11:43 AM CDTSpecial Weather StatementOHXGiles, Lawrence47 min
Aug 13, 11:58 AM CDTSevere Thunderstorm WarningOHXGiles, Lawrence47 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2012Every 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.