Alert archive / Tennessee / Special Weather Statements in 2014

Special Weather Statement, NWS Nashville, TN

April 3, 2014Cannon County, DeKalb County, Tennessee

NWS Nashville, TN issued this special weather statement at Apr 3, 2014, 2:05 AM CDT for Cannon County, DeKalb County, Tennessee. It was in force for 25 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 3, 2014, 2:05 AM CDT (07:05 UTC)
Expired: Apr 3, 2014, 2:30 AM CDT
In force: 25 min
Issued by: NWS Nashville, TN

Counties Cannon County, TN, DeKalb County, TN

The radar

The Nashville radar (KOHX), 87 km from the middle of the area, began a volume at 07:05 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 00:00Z, 7.1 hours before the alert went out and 85 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: 207 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1685 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 3, 1:01 AM CDT, 1 hour 4 minutes earlier.

Area forecast discussion, Apr 3, 1:01 AM CDT, 1 hour 4 minutes before

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Hazardous weather outlook, Apr 2, 5:00 AM CDT, 21 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
500 AM CDT WED APR 2 2014

TNZ005>011-023>034-056>066-075-077>080-093>095-031000-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-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-
500 AM CDT WED APR 2 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT.

AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS MIDDLE TENNESSEE
WEDNESDAY EVENING INTO THURSDAY MORNING...BRINGING SCATTERED
SHOWERS AND THUNDERSTORMS. A FEW STRONG STORMS WITH GUSTY WINDS
AND SMALL HAIL ARE POSSIBLE...ESPECIALLY ACROSS NORTHWEST MIDDLE
TENNESSEE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR ALL OF MIDDLE
TENNESSEE THURSDAY NIGHT AND FRIDAY.

A STRONG STORM SYSTEM WILL MOVE ACROSS MIDDLE TENNESSEE LATE
THURSDAY NIGHT INTO FRIDAY WITH SCATTERED TO NUMEROUS SHOWERS AND
THUNDERSTORMS EXPECTED. SOME STORMS MAY BE STRONG OR SEVERE WITH
DAMAGING WINDS AND LARGE HAIL THE MAIN THREATS...ALTHOUGH AN
ISOLATED TORNADO CANNOT BE RULED OUT. THE BEST CHANCE FOR ANY
SEVERE STORMS WILL BE IN COUNTIES NEAR THE TENNESSEE RIVER.

GUSTY SOUTHWEST WINDS OF 15 TO 30 MPH WITH GUSTS TO 40 MPH ARE
EXPECTED BEHIND THE COLD FRONT ON FRIDAY...AND A WIND ADVISORY
MAY BE NEEDED FOR MUCH OF MIDDLE TENNESSEE.

.SPOTTER CALL TO ACTION STATEMENT...

REPORTS FROM TRAINED WEATHER SPOTTERS MAY BE NEEDED THURSDAY NIGHT
INTO FRIDAY.

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

55

In the hours before

Local storm report, Apr 3, 1:07 AM CDT, 58 minutes before

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Local storm report, Apr 3, 1:17 AM CDT, 48 minutes before

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Special weather statement, Apr 3, 1:20 AM CDT, 45 minutes before

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Special weather statement, Apr 3, 1:32 AM CDT, 33 minutes before

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Special weather statement, Apr 3, 1:57 AM CDT, 8 minutes before

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Special weather statement, Apr 3, 2:05 AM 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
Apr 2, 7:18 PM CDT	Special Weather Statement	OHX	Stewart	27 min
Apr 2, 7:54 PM CDT	Special Weather Statement	OHX	Stewart	51 min
Apr 2, 10:49 PM CDT	Special Weather Statement	OHX	Humphreys	26 min
Apr 2, 11:07 PM CDT	Special Weather Statement	OHX	Williamson	23 min
Apr 2, 11:15 PM CDT	Special Weather Statement	OHX	Dickson	30 min
Apr 2, 11:38 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Williamson	37 min
Apr 2, 11:43 PM CDT	Special Weather Statement	OHX	Wilson	47 min
Apr 2, 11:51 PM CDT	Special Weather Statement	OHX	Sumner	39 min
Apr 2, 11:57 PM CDT	Special Weather Statement	OHX	Williamson	33 min
Apr 3, 12:20 AM CDT	Special Weather Statement	OHX	Davidson	40 min
Apr 3, 12:28 AM CDT	Special Weather Statement	OHX	DeKalb	47 min
Apr 3, 12:42 AM CDT	Special Weather Statement	OHX	Davidson, Wilson	48 min
Apr 3, 12:44 AM CDT	Special Weather Statement	OHX	Sumner	46 min
Apr 3, 1:00 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Wilson	45 min
Apr 3, 1:20 AM CDT	Special Weather Statement	OHX	White	40 min
Apr 3, 1:32 AM CDT	Special Weather Statement	OHX	DeKalb	28 min
Apr 3, 1:57 AM CDT	Special Weather Statement	OHX	Cumberland, White	63 min

Nearby

Special Weather Statements in Tennessee, 2014 Every special weather statement in 2014

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.