Alert archive / Tennessee / Special Weather Statements in 2013

Special Weather Statement, NWS Nashville, TN

August 23, 201312 counties in Tennessee

NWS Nashville, TN issued this special weather statement at Aug 23, 2013, 4:03 PM CDT for 12 counties in Tennessee. It was in force for 57 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 23, 2013, 4:03 PM CDT (21:03 UTC)
Expired
Aug 23, 2013, 5:00 PM CDT
In force
57 min
Issued by
NWS Nashville, TN

Counties Cheatham County, TN, Davidson County, TN, Houston County, TN, Jackson County, TN, Macon County, TN, Montgomery County, TN, Robertson County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 30 km from the middle of the area, began a volume at 21:05 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, 9.1 hours before the alert went out and 43 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 2013-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2024 joules per kilogram.LCLLFCEL10008507005003002001001 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 2013-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.1939Sfc1 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
2024 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
743 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
23 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.

575 
WWUS84 KOHX 232103
SPSOHX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
403 PM CDT FRI AUG 23 2013

TNZ005>010-023-025>032-064-232200-
CHEATHAM-CLAY-DAVIDSON-DE
KALB-DICKSON-HOUSTON-JACKSON-MACON-MONTGOMERY-PUTNAM-ROBERTSON-SMITH-
STEWART-SUMNER-TROUSDALE-WILSON-
403 PM CDT FRI AUG 23 2013

...SIGNIFICANT WEATHER ADVISORY FOR CHEATHAM...CLAY...DAVIDSON...DE
KALB...DICKSON...HOUSTON...JACKSON...MACON...MONTGOMERY...PUTNAM...
ROBERTSON...SMITH...STEWART...SUMNER...TROUSDALE AND WILSON
COUNTIES...

AT 400 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE 
TRACKING THUNDERSTORMS ALONG AND NEAR THE TENNESSEE AND KENTUCKY 
STATE LINE.  THE STORMS WERE MOVING TO THE SOUTH AT 20 MPH.  

SOME OF THE STORMS IN THE NORTHERN PART OF MIDDLE TENNESSE COULD BE 
STRONG BETWEEN NOW AND 5 PM CDT...WITH SMALL HAIL AND WINDS UP TO 40 
MPH POSSIBLE.  BRIEF HEAVY DOWNPOURS ARE POSSIBLE...TOO.

LAT...LON 3663 8576 3659 8565 3605 8568 3626 8782
      3663 8792 3666 8635

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 5:00 PM CDTSpecial Weather StatementOHXCumberland60 min
Aug 23, 5:04 PM CDTSpecial Weather StatementOHXWhite41 min
Aug 23, 5:07 PM CDTSevere Thunderstorm WarningOHXMarshall, Maury, Williamson38 min
Aug 23, 5:36 PM CDTSevere Thunderstorm WarningOHXBedford, Rutherford54 min
Aug 23, 6:12 PM CDTSpecial Weather StatementOHXVan Buren48 min
Aug 23, 6:20 PM CDTSevere Thunderstorm WarningOHXHickman, Perry40 min

Nearby

Special Weather Statements in Tennessee, 2013Every special weather statement in 2013

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.