Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Nashville, TN

April 5, 2012Cheatham County, Dickson County, Tennessee

NWS Nashville, TN issued this special weather statement at Apr 5, 2012, 1:05 PM CDT for Cheatham County, Dickson 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: Apr 5, 2012, 1:05 PM CDT (18:05 UTC)
Expired: Apr 5, 2012, 1:45 PM CDT
In force: 40 min
Issued by: NWS Nashville, TN

Counties Cheatham County, TN, Dickson County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.1 hours before the alert went out and 66 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: 670 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 805 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

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 Apr 5, 12:51 PM CDT, 14 minutes earlier.

Area forecast discussion, Apr 5, 12:51 PM CDT, 14 minutes before

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Hazardous weather outlook, Apr 5, 4:08 AM CDT, 8 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
408 AM CDT THU APR 5 2012

TNZ005>011-022>034-056>066-075-077>080-093>095-061030-
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-
408 AM CDT THU APR 5 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR ALL OF MIDDLE
TENNESSEE TODAY AND EARLY TONIGHT. A COLD FRONT AND AN UPPER LOW
CROSSING THE REGION WILL SET OFF NUMEROUS THUNDERSTORMS. ISOLATED
STORMS MAY PRODUCE LARGE HAIL...AND POSSIBLY DAMAGING WIND...
ESPECIALLY IN THE AFTERNOON.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.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

07

In the hours before

Special weather statement, Apr 5, 12:48 PM CDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1248 PM CDT THU APR 5 2012

TNZ005-006-051830-
MONTGOMERY-STEWART-
1248 PM CDT THU APR 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR MONTGOMERY AND STEWART
COUNTIES...

AT 1245 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 10 MILES EAST OF DOVER...MOVING NORTHEAST AT 5
MPH.

PEOPLE IN EASTERN STEWART AND WESTERN MONTGOMERY COUNTIES...SHOULD
MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS
AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER
THREATEN.

PENNY SIZE HAIL IS EXPECTED WITH THIS STORM.

LAT...LON 3654 8741 3636 8759 3644 8785 3661 8781

BW

Local storm report, Apr 5, 1:04 PM CDT, 1 minute before

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Special weather statement, Apr 5, 1:05 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
105 PM CDT THU APR 5 2012

TNZ023-025-026-051845-
CHEATHAM-DICKSON-HOUSTON-
105 PM CDT THU APR 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR CHEATHAM...DICKSON AND HOUSTON
COUNTIES...

AT 1259 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR WHITE BLUFF...OR 10 MILES SOUTHWEST OF
ASHLAND CITY...MOVING NORTHEAST AT 10 MPH.

PEOPLE IN CENTRAL CHEATHAM...EASTERN HOUSTON AND NORTHERN DICKSON
COUNTIES...SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR
POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD
SEVERE WEATHER THREATEN.

PENNY SIZE HAIL IS EXPECTED WITH THIS STORM.

LAT...LON 3632 8735 3632 8732 3631 8730 3632 8729
      3632 8717 3634 8713 3623 8706 3607 8710
      3610 8735 3614 8755 3616 8756 3634 8756

BW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 12:48 PM CDT	Special Weather Statement	OHX	Stewart	42 min
Apr 5, 1:13 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	29 min
Apr 5, 1:24 PM CDT	Special Weather Statement	OHX	Giles, Marshall, Maury	66 min
Apr 5, 1:37 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	18 min
Apr 5, 1:53 PM CDT	Special Weather Statement	OHX	Cheatham, Dickson, Houston, Stewart	67 min
Apr 5, 2:02 PM CDT	Severe Thunderstorm Warning	OHX	Benton	28 min
Apr 5, 2:14 PM CDT	Special Weather Statement	OHX	Rutherford	61 min
Apr 5, 2:23 PM CDT	Special Weather Statement	OHX	Houston	37 min
Apr 5, 2:28 PM CDT	Special Weather Statement	OHX	Williamson	47 min
Apr 5, 2:32 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Davidson, Marshall, Rutherford, Williamson	28 min
Apr 5, 2:36 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys, Stewart	39 min
Apr 5, 2:48 PM CDT	Special Weather Statement	OHX	Hickman	42 min
Apr 5, 3:07 PM CDT	Special Weather Statement	OHX	Montgomery	23 min
Apr 5, 3:15 PM CDT	Special Weather Statement	OHX	Houston	45 min
Apr 5, 3:17 PM CDT	Special Weather Statement	OHX	Rutherford, Williamson	43 min
Apr 5, 3:24 PM CDT	Areal Flood Advisory	OHX	Williamson	3 hr
Apr 5, 3:53 PM CDT	Special Weather Statement	OHX	Cannon, Davidson, Rutherford, Williamson, Wilson	52 min
Apr 5, 3:59 PM CDT	Special Weather Statement	OHX	Cumberland	31 min
Apr 5, 4:29 PM CDT	Special Weather Statement	OHX	Cumberland	31 min
Apr 5, 5:00 PM CDT	Special Weather Statement	OHX	Cumberland
Apr 5, 5:02 PM CDT	Areal Flood Advisory	OHX	Cumberland	3 hr
Apr 5, 5:05 PM CDT	Special Weather Statement	OHX	Cumberland	25 min
Apr 5, 5:18 PM CDT	Areal Flood Advisory	OHX	Davidson	3 hr

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.