Alert archive / Tennessee / Special Weather Statements in 2015

Special Weather Statement, NWS Nashville, TN

July 7, 2015Robertson County, Tennessee

NWS Nashville, TN issued this special weather statement at Jul 7, 2015, 8:47 PM CDT for Robertson County, Tennessee. It was in force for 43 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: Jul 7, 2015, 8:47 PM CDT (01:47 UTC)
Expired: Jul 7, 2015, 9:30 PM CDT
In force: 43 min
Issued by: NWS Nashville, TN

County Robertson County, TN

The radar

The Nashville radar (KOHX), 33 km from the middle of the area, began a volume at 01:49 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, 1.8 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-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: 304 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 983 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 Jul 7, 7:55 PM CDT, 52 minutes earlier.

Area forecast discussion, Jul 7, 7:55 PM CDT, 52 minutes before

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Hazardous weather outlook, Jul 7, 5:50 AM CDT, 14 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
550 AM CDT TUE JUL 7 2015

TNZ005>011-023>034-056>066-075-077>080-093>095-081030-
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-
550 AM CDT TUE JUL 7 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Special weather statement, Jul 7, 6:55 PM CDT, 1 hour 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
655 PM CDT TUE JUL 7 2015

TNZ028-062-063-080045-
CANNON TN-WILSON TN-RUTHERFORD TN-
655 PM CDT TUE JUL 7 2015

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL RUTHERFORD...SOUTHEASTERN
WILSON AND NORTHWESTERN CANNON COUNTIES UNTIL 745 PM CDT...

AT 655 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
WALTERHILL...OR 9 MILES NORTH OF MURFREESBORO...MOVING EAST AT 40
MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
MURFREESBORO...SMYRNA...LA VERGNE...WALTERHILL...AUBURNTOWN...
READYVILLE...MILTON...CEDARS OF LEBANON STATE PARK AND LASCASSAS.

LAT...LON 3604 8605 3603 8604 3571 8620 3590 8655
      3606 8651
TIME...MOT...LOC 2355Z 278DEG 33KT 3599 8644

27

Special weather statement, Jul 7, 6:58 PM CDT, 1 hour 49 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
658 PM CDT TUE JUL 7 2015

TNZ009-028>030-080030-
TROUSDALE TN-MACON TN-SMITH TN-WILSON TN-
658 PM CDT TUE JUL 7 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MACON...TROUSDALE...
NORTHEASTERN WILSON AND NORTHERN SMITH COUNTIES UNTIL 730 PM CDT...

AT 657 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
HARTSVILLE...MOVING EAST AT 40 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CARTHAGE...HARTSVILLE...SOUTH CARTHAGE...DICKERSON CHAPEL RECREATION
AREA...DIXON SPRINGS AND PLEASANT SHADE.

LAT...LON 3650 8587 3631 8584 3629 8585 3628 8584
      3624 8583 3626 8624 3642 8626
TIME...MOT...LOC 2357Z 265DEG 26KT 3634 8615

27

Special weather statement, Jul 7, 7:22 PM CDT, 1 hour 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
722 PM CDT TUE JUL 7 2015

TNZ028-030-032-064-080100-
PUTNAM TN-DE KALB TN-SMITH TN-WILSON TN-
722 PM CDT TUE JUL 7 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN DE KALB...WEST CENTRAL
PUTNAM...SOUTHEASTERN WILSON AND SOUTHERN SMITH COUNTIES UNTIL 800 PM
CDT...

AT 722 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
WATERTOWN...OR 12 MILES SOUTHEAST OF LEBANON...MOVING EAST AT 55 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CARTHAGE...WATERTOWN...GORDONSVILLE...HICKMAN...SOUTH CARTHAGE...
ALEXANDRIA...DOWELLTOWN...LIBERTY...CENTER HILL LAKE AND EDGAR EVANS
STATE PARK.

LAT...LON 3627 8584 3625 8582 3625 8580 3624 8578
      3625 8578 3624 8577 3623 8574 3623 8571
      3600 8569 3599 8626 3617 8627 3628 8584
TIME...MOT...LOC 0022Z 257DEG 46KT 3610 8615

27

Special weather statement, Jul 7, 8:06 PM CDT, 41 minutes before

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Special weather statement, Jul 7, 8:29 PM CDT, 18 minutes before

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Special weather statement, Jul 7, 8:47 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
Jul 7, 7:22 PM CDT	Special Weather Statement	OHX	Smith	38 min
Jul 7, 7:54 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Overton, Putnam	36 min
Jul 7, 8:06 PM CDT	Special Weather Statement	OHX	Montgomery, Stewart	39 min
Jul 7, 8:29 PM CDT	Special Weather Statement	OHX	Fentress, Overton	46 min
Jul 8, 1:11 AM CDT	Special Weather Statement	OHX	DeKalb, Putnam	49 min
Jul 8, 1:35 AM CDT	Special Weather Statement	OHX	Putnam	40 min

Nearby

Special Weather Statements in Tennessee, 2015 Every special weather statement in 2015

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.