Alert archive / Tennessee / Special Weather Statements in 2017

Special Weather Statement, NWS Nashville, TN

February 24, 2017Cannon County, DeKalb County, Tennessee

NWS Nashville, TN issued this special weather statement at Feb 24, 2017, 9:10 PM CST for Cannon County, DeKalb County, Tennessee. It was in force for 50 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: Feb 24, 2017, 9:10 PM CST (03:10 UTC)
Expired: Feb 24, 2017, 10:00 PM CST
In force: 50 min
Issued by: NWS Nashville, TN

Counties Cannon County, TN, DeKalb County, TN

The radar

The Nashville radar (KOHX), 67 km from the middle of the area, began a volume at 03:13 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, 3.2 hours before the alert went out and 62 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: 391 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1931 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

As transmitted.

259 
WWUS84 KOHX 250310
SPSOHX

Special Weather Statement
National Weather Service Nashville TN
910 PM CST FRI FEB 24 2017
 
TNZ028-030-062>064-250400-
Cannon TN-Rutherford TN-Wilson TN-De Kalb TN-Smith TN-
910 PM CST FRI FEB 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SMITH...DE KALB...
SOUTHEASTERN RUTHERFORD...SOUTHEASTERN WILSON AND CANNON COUNTIES
UNTIL 1000 PM CST...

At 910 PM CST, Doppler radar was tracking a strong thunderstorm near
Murfreesboro, moving northeast at 40 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Murfreesboro, Smithville, Woodbury, Watertown, Gordonsville,
Walterhill, Hickman, Alexandria, Dowelltown, Liberty, Auburntown,
Lascassas, Center Hill Lake, Bradyville, Edgar Evans State Park,
Milton and Readyville.

LAT...LON 3590 8567 3584 8582 3585 8587 3581 8593
      3570 8622 3571 8622 3568 8627 3591 8644
      3624 8590
TIME...MOT...LOC 0310Z 238DEG 35KT 3585 8632 

$$

Barnwell

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 7:46 PM CST	Special Weather Statement	OHX	Maury, Williamson	44 min
Feb 24, 8:13 PM CST	Special Weather Statement	OHX	Giles	47 min
Feb 24, 8:36 PM CST	Special Weather Statement	OHX	Rutherford	39 min
Feb 24, 8:42 PM CST	Special Weather Statement	OHX	Giles	48 min
Feb 24, 8:49 PM CST	Special Weather Statement	OHX	Bedford, Marshall	41 min
Feb 24, 9:26 PM CST	Special Weather Statement	OHX	Cannon, Warren	49 min
Feb 24, 9:31 PM CST	Special Weather Statement	OHX	Clay, Pickett	44 min
Feb 24, 9:50 PM CST	Severe Thunderstorm Warning	OHX	Clay, Fentress, Overton, Pickett	25 min
Feb 24, 9:55 PM CST	Special Weather Statement	OHX	Putnam	50 min
Feb 24, 10:04 PM CST	Severe Thunderstorm Warning	OHX	Jackson, Overton, Putnam, White	26 min
Feb 24, 10:14 PM CST	Special Weather Statement	OHX	Coffee, Warren	46 min
Feb 24, 10:29 PM CST	Severe Thunderstorm Warning	OHX	Fentress, Overton, Putnam	31 min
Feb 24, 10:47 PM CST	Special Weather Statement	OHX	Grundy	43 min
Feb 24, 11:00 PM CST	Special Weather Statement	OHX	Fentress, Pickett	45 min
Feb 24, 11:33 PM CST	Special Weather Statement	OHX	Grundy, Van Buren	27 min

Nearby

Special Weather Statements in Tennessee, 2017 Every special weather statement in 2017

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.