Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Nashville, TN

June 11, 2012Bedford County, Giles County, Marshall County, Tennessee

NWS Nashville, TN issued this special weather statement at Jun 11, 2012, 6:50 PM CDT for Bedford County, Giles County, Marshall County, Tennessee. It was in force for 40 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: Jun 11, 2012, 6:50 PM CDT (23:50 UTC)
Expired: Jun 11, 2012, 7:30 PM CDT
In force: 40 min
Issued by: NWS Nashville, TN

Counties Bedford County, TN, Giles County, TN, Marshall County, TN

The radar

The Northeast Alabama radar (KHTX), 77 km from the middle of the area, began a volume at 23:50 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, 11.8 hours before the alert went out and 79 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: 141 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 70 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Nashville, TN wrote its last area forecast discussion before this special weather statement went out at Jun 11, 6:46 PM CDT, 4 minutes earlier.

Area forecast discussion, Jun 11, 6:46 PM CDT, 4 minutes before

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Hazardous weather outlook, Jun 11, 12:30 PM CDT, 6 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NASHVILLE TN
1230 PM CDT MON JUN 11 2012

TNZ005>011-022>034-056>066-075-077>080-093>095-121000-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON-
HOUSTON-HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-
SMITH-JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-
WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE-
CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-
GILES-
1230 PM CDT MON JUN 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR LOCATIONS GENERALLY
WEST OF INTERSTATE 65 THROUGH TONIGHT. MAIN CONCERNS WITH SEVERE
THUNDERSTORMS THAT DO DEVELOP WILL BE DAMAGING WINDS AND LARGE
HAIL. OTHER LOCATIONS ACROSS THE MID STATE COULD EXPERIENCE STRONG
THUNDERSTORMS...WITH MAIN CONCERNS BEING GUSTY WINDS AND SMALL HAIL
AS A COLD FRONT MOVES ACROSS THE MID STATE TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...
SCATTERED TO NUMEROUS THUNDERSTORMS ARE POSSIBLE TUESDAY MORNING
ACROSS SOUTHERN PORTIONS OF MIDDLE TENNESSEE AND THE CUMBERLAND
PLATEAU...AS A COLD FRONT MOVES THROUGH THE AREA. SOME STRONG
THUNDERSTORMS CAN BE EXPECTED WITH THE MAIN CONCERNS BEING GUSTY
WINDS AND SMALL HAIL.

.SPOTTER CALL TO ACTION STATEMENT...

REPORTS FROM TRAINED WEATHER SPOTTERS MAY BE NEEDED.

SPOTTER THUNDERSTORM REPORTING CRITERIA...
TORNADO
FUNNEL CLOUD
FLOODING
HAIL >= 1/2 INCH
WINDS > 50 MPH (MEASURED)
STRUCTURAL DAMAGE
TREES OR POWER LINES DOWN

31

In the hours before

Local storm report, Jun 11, 6:21 PM CDT, 29 minutes before

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Local storm report, Jun 11, 6:44 PM CDT, 6 minutes before

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Special weather statement, Jun 11, 6:44 PM CDT, 6 minutes before

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Local storm report, Jun 11, 6:45 PM CDT, 5 minutes before

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Local storm report, Jun 11, 6:50 PM CDT, 0 minutes before

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Special weather statement, Jun 11, 6:50 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 3:49 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys, Stewart	41 min
Jun 11, 4:28 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys, Perry, Wayne	47 min
Jun 11, 4:36 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Stewart	39 min
Jun 11, 5:05 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Montgomery, Stewart	40 min
Jun 11, 5:15 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Montgomery, Robertson	30 min
Jun 11, 5:33 PM CDT	Special Weather Statement	OHX	Giles, Hickman, Lawrence, Lewis, Maury	42 min
Jun 11, 6:01 PM CDT	Severe Thunderstorm Warning	OHX	Robertson	38 min
Jun 11, 6:07 PM CDT	Special Weather Statement	OHX	Giles, Marshall	38 min
Jun 11, 6:12 PM CDT	Severe Thunderstorm Warning	OHX	Robertson, Sumner	33 min
Jun 11, 6:22 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Robertson, Sumner, Wilson	23 min
Jun 11, 6:44 PM CDT	Special Weather Statement	OHX	Sumner, Trousdale, Wilson	46 min

Nearby

Special Weather Statements in Tennessee, 2012 Every special weather statement 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.