Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 12, NWS Nashville, TN

February 24, 2011Clay County, Jackson County, Macon County, Tennessee

NWS Nashville, TN issued this tornado warning at Feb 24, 2011, 10:36 PM CST for Clay County, Jackson County, Macon County, Tennessee. It was in force for 24 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, 2011, 10:36 PM CST (04:36 UTC)
Expired: Feb 24, 2011, 11:00 PM CST
In force: 24 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Clay County, TN, Jackson County, TN, Macon County, TN

The radar

The Nashville radar (KOHX), 77 km from the middle of the area, began a volume at 04:38 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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 24, 7:41 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 4.6 hours before the alert went out and 86 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: 17 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 538 m²/s²
0-3 km storm-relative helicity: 629 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

263 
WFUS54 KOHX 250436
TOROHX
TNC027-087-111-250500-
/O.NEW.KOHX.TO.W.0012.110225T0436Z-110225T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1036 PM CST THU FEB 24 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN CLAY COUNTY IN MIDDLE TENNESSEE...
  NORTHWESTERN JACKSON COUNTY IN MIDDLE TENNESSEE...
  MACON COUNTY IN MIDDLE TENNESSEE...

* UNTIL 1100 PM CST

* AT 1033 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR LAFAYETTE...AND MOVING NORTHEAST AT 70 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CELINA AND RED BOILING SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3662 8550 3653 8543 3642 8591 3644 8608
      3653 8613 3664 8597
TIME...MOT...LOC 0436Z 244DEG 59KT 3651 8600

$$

BOYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 7:22 PM CST	Tornado Warning	OHX	Stewart	24 min
Feb 24, 8:24 PM CST	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys, Stewart	36 min
Feb 24, 8:30 PM CST	Tornado Warning	OHX	Perry	30 min
Feb 24, 8:30 PM CST	Tornado Warning	OHX	Benton, Houston, Humphreys, Stewart	30 min
Feb 24, 8:54 PM CST	Tornado Warning	OHX	Hickman	36 min
Feb 24, 8:58 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Houston, Humphreys, Montgomery and 2 more	63 min
Feb 24, 9:00 PM CST	Severe Thunderstorm Warning	OHX	Lewis, Wayne	45 min
Feb 24, 9:00 PM CST	Tornado Warning	OHX	Cheatham, Dickson, Houston, Humphreys, Montgomery	30 min
Feb 24, 9:12 PM CST	Tornado Warning	OHX	Dickson, Humphreys	33 min
Feb 24, 9:20 PM CST	Tornado Warning	OHX	Montgomery, Robertson, Sumner	25 min
Feb 24, 9:26 PM CST	Severe Thunderstorm Warning	OHX	Maury, Williamson	34 min
Feb 24, 9:30 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Macon, Montgomery, Robertson and 3 more	60 min
Feb 24, 9:34 PM CST	Tornado Warning	OHX	Cheatham, Davidson, Williamson	26 min
Feb 24, 9:46 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	59 min
Feb 24, 9:58 PM CST	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Lewis, Wayne	62 min
Feb 24, 10:02 PM CST	Tornado Warning Emergency	OHX	Davidson, Rutherford, Wilson	28 min
Feb 24, 10:08 PM CST	Tornado Warning	OHX	Davidson, Macon, Smith, Sumner, Trousdale, Wilson	37 min
Feb 24, 10:17 PM CST	Tornado Warning	OHX	Macon, Sumner, Trousdale	43 min
Feb 24, 10:26 PM CST	Severe Thunderstorm Warning	OHX	Clay, Fentress, Jackson, Macon, Overton, Pickett and 5 more	79 min
Feb 24, 10:27 PM CST	Flash Flood Warning	OHX	Stewart	3 hr
Feb 24, 10:37 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Marshall, Maury, Rutherford	23 min
Feb 24, 10:39 PM CST	Tornado Warning	OHX	Clay, Fentress, Jackson, Macon, Overton, Pickett and 2 more	36 min
Feb 24, 10:45 PM CST	Severe Thunderstorm Warning	OHX	DeKalb	30 min
Feb 24, 11:03 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Marshall, Rutherford, Warren	42 min
Feb 24, 11:14 PM CST	Severe Thunderstorm Warning	OHX	DeKalb, White	31 min
Feb 24, 11:31 PM CST	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Van Buren, Warren	44 min
Feb 24, 11:34 PM CST	Severe Thunderstorm Warning	OHX	Cumberland	41 min
Feb 24, 11:40 PM CST	Severe Thunderstorm Warning	OHX	White	35 min
Feb 24, 11:40 PM CST	Severe Thunderstorm Warning	OHX	Fentress, Overton, Pickett, Putnam	50 min
Feb 25, 12:07 AM CST	Severe Thunderstorm Warning	OHX	Cumberland	23 min
Feb 25, 1:25 AM CST	River Flood Warning	OHX	Bedford	6 days

Nearby

Tornado Warnings in Tennessee, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.