Alert archive / Tennessee / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS Nashville, TN

March 18, 2013Giles County, Marshall County, Maury County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 18, 2013, 11:18 AM CDT for Giles County, Marshall County, Maury County, Tennessee. It was in force for 42 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 18, 2013, 11:18 AM CDT (16:18 UTC)
Expired: Mar 18, 2013, 12:00 PM CDT
In force: 42 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Giles County, TN, Marshall County, TN, Maury County, TN

The radar

The Nashville radar (KOHX), 83 km from the middle of the area, began a volume at 16:20 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.

What was reported inside it

Time	Report	Where	Remark
Mar 18, 11:20 AM CDT	TSTM WND DMG	8 Wnw Lewisburg, TN	ROOF BLOWN OFF OF A BARN AT 2780 JOE REEVES RD JUST EAST OF CULLEOKA.
Mar 18, 11:22 AM CDT	TORNADO	9 Nne Lynnville, TN	AN EF0 TORNADO TOUCHED DOWN ON MCKNIGHT ROAD EAST OF CULLEOKA WHERE SEVERAL TREES WERE BLOWN DOWN AND ONE MOBILE HOME HAD MINOR SIDING DAMAGE. A FEW MORE TREES WERE BLOWN DOWN ON OLD BRUSH CREEK ROAD. NUMEROUS TREES WERE SNAPPED OR UPROOTED IN ALL DIRECTIONS A

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 18, 8:09 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.3 hours before the alert went out and 69 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: 188 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 376 m²/s²
0-3 km storm-relative helicity: 366 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

074 
WUUS54 KOHX 181618
SVROHX
TNC055-117-119-181700-
/O.NEW.KOHX.SV.W.0021.130318T1618Z-130318T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1118 AM CDT MON MAR 18 2013

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL GILES COUNTY IN MIDDLE TENNESSEE...
  CENTRAL MARSHALL COUNTY IN MIDDLE TENNESSEE...
  SOUTHEASTERN MAURY COUNTY IN MIDDLE TENNESSEE...

* UNTIL NOON CDT

* AT 1115 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH. THE STORM WAS 9 MILES SOUTH OF COLUMBIA...MOVING EAST AT
  35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LEWISBURG AND FARMINGTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION...MOVE TO AN INSIDE ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS SEVERE THUNDERSTORM HAS THE POTENTIAL TO
CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM MONDAY
AFTERNOON FOR CENTRAL TENNESSEE.

&&

LAT...LON 3567 8670 3542 8668 3539 8708 3556 8712
TIME...MOT...LOC 1619Z 258DEG 29KT 3550 8698

$$

FORECASTER:13

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 5:16 AM CDT	Special Weather Statement	OHX	Dickson, Houston, Humphreys	29 min
Mar 18, 6:07 AM CDT	Special Weather Statement	OHX	Cheatham, Dickson, Houston, Montgomery, Robertson	38 min
Mar 18, 7:22 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Dickson, Houston, Humphreys	38 min
Mar 18, 7:51 AM CDT	Tornado Warning	OHX	Dickson, Montgomery	24 min
Mar 18, 8:05 AM CDT	Tornado Warning	OHX	Cheatham, Davidson, Dickson, Robertson	25 min
Mar 18, 8:15 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Williamson	45 min
Mar 18, 9:00 AM CDT	Special Weather Statement	OHX	Macon, Rutherford, Sumner, Trousdale, Williamson, Wilson	45 min
Mar 18, 9:21 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Smith, Sumner, Trousdale and 1 more	39 min
Mar 18, 10:03 AM CDT	Special Weather Statement	OHX	Clay, Fentress, Jackson, Overton, Pickett, Putnam	42 min
Mar 18, 11:13 AM CDT	Special Weather Statement	OHX	Maury	47 min
Mar 18, 11:23 AM CDT	Tornado Warning	OHX	Bedford, Marshall, Maury	37 min
Mar 18, 12:01 PM CDT	Special Weather Statement	OHX	Giles	44 min
Mar 18, 12:15 PM CDT	Tornado Warning	OHX	Cannon, Rutherford	30 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2013 Every severe thunderstorm warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.