Alert archive / Tennessee / Special Weather Statements in 2012

Special Weather Statement, NWS Nashville, TN

January 11, 20129 counties in Tennessee

NWS Nashville, TN issued this special weather statement at Jan 11, 2012, 11:00 AM CST for 9 counties in Tennessee. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 11, 2012, 11:00 AM CST (17:00 UTC)
Expired: Jan 11, 2012, 1:00 PM CST
In force: 2 hr
Issued by: NWS Nashville, TN

Counties Bedford County, TN, Cannon County, TN, Coffee County, TN, Cumberland County, TN, Grundy County, TN, Rutherford County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.0 hours before the alert went out and 108 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: 66 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 468 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: 121 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 Jan 11, 10:42 AM CST, 18 minutes earlier.

Area forecast discussion, Jan 11, 10:42 AM CST, 18 minutes before

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Hazardous weather outlook, Jan 11, 5:19 AM CST, 5 hours 41 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
519 AM CST WED JAN 11 2012

TNZ005>011-022>034-056>066-075-077>080-093>095-121130-
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-
519 AM CST WED JAN 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

AN UPPER LEVEL LOW PRESSURE SYSTEM WILL MOVE OVER THE REGION THIS
MORNING WITH A CHANCE OF THUNDERSTORMS. A FEW STRONG STORMS ARE
POSSIBLE IN SOUTHERN PORTIONS OF MIDDLE TENNESSEE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A STRONG COLD FRONT WILL MOVE ACROSS THE REGION THURSDAY MORNING
WITH TEMPERATURES FALLING DURING THE DAY. THE COLDER AIR WILL
CHANGE RAIN TO SNOW IN THE AFTERNOON. IT WILL BE COLD ENOUGH FOR
SNOW ACCUMULATIONS IN NORTHERN SECTIONS AND IN THE CUMBERLAND
PLATEAU REGION DURING THE AFTERNOON. THE CHANCE OF ACCUMULATING
SNOW WILL CONTINUE THURSDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS AND LOCAL EMERGENCY MANAGEMENT OFFICIALS ARE ENCOURAGED
TO REPORT ANY SNOW ACCUMULATIONS THURSDAY AFTERNOON AND NIGHT TO
THE NATIONAL WEATHER SERVICE IN NASHVILLE.

04

In the hours before

Local storm report, Jan 11, 6:51 AM CST, 4 hours 9 minutes before

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Special weather statement, Jan 11, 11:00 AM CST, 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
Jan 11, 5:46 AM CST	Areal Flood Advisory	OHX	Bedford, Cheatham, Clay, Cumberland, Davidson, DeKalb and 21 more	50 days

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.