Alert archive / Tennessee / Tornado Warnings in 2014

Tornado Warning 10, NWS Nashville, TN

April 28, 2014Coffee County, Tennessee

NWS Nashville, TN issued this tornado warning at Apr 28, 2014, 8:43 PM CDT for Coffee County, Tennessee. It was in force for 32 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: Apr 28, 2014, 8:43 PM CDT (01:43 UTC)
Expired: Apr 28, 2014, 9:15 PM CDT
In force: 32 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

County Coffee County, TN

The radar

The Northeast Alabama radar (KHTX), 58 km from the middle of the area, began a volume at 01:47 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
Apr 28, 8:50 PM CDT	TSTM WND DMG	Tullahoma, TN	A FEW TREES WERE BLOWN DOWN AROUND TULLAHOMA INCLUDING ON LINDA LANE...CARTER BLAKE ROAD...AND FLOWERTOWN ROAD. ONE TREE FELL ON A HOME ON OVOCA ROAD. TIME ESTIMATED.
Apr 28, 8:50 PM CDT	TSTM WND DMG	Tullahoma, TN	A FEW TREES WERE BLOWN DOWN AROUND TULLAHOMA INCLUDING ON LINDA LANE...CARTER BLAKE ROAD...AND FLYER TOWN ROAD. TIME ESTIMATED.

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
Apr 28, 12:39 PM CDT	Tornado Watch PDS	SPC	8 hr
Apr 28, 5:37 PM CDT	Tornado Watch PDS	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.7 hours before the alert went out and 89 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: 1019 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 789 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 335 m²/s²
0-3 km storm-relative helicity: 375 m²/s²
Significant tornado parameter: 2.7
Supercell composite: 15.6

Open this sounding in Storm Lab

The text

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

532 
WFUS54 KOHX 290143
TOROHX
TNC031-290215-
/O.NEW.KOHX.TO.W.0010.140429T0143Z-140429T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
843 PM CDT MON APR 28 2014

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  COFFEE COUNTY IN MIDDLE TENNESSEE...

* UNTIL 915 PM CDT

* AT 843 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
  DANGEROUS STORM WAS LOCATED NEAR LYNCHBURG...AND MOVING NORTHEAST
  AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MANCHESTER...TULLAHOMA...HILLSBORO AND SUMMITVILLE.

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.

LAT...LON 3534 8604 3536 8614 3533 8619 3534 8626
      3540 8628 3541 8625 3544 8625 3565 8602
      3566 8599 3561 8595 3559 8596 3553 8588
      3545 8589 3532 8600
TIME...MOT...LOC 0143Z 223DEG 41KT 3528 8626

$$

SHAMBURGER

1 follow-up statement

938 
WWUS54 KOHX 290200
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
900 PM CDT MON APR 28 2014

TNC031-290209-
/O.CAN.KOHX.TO.W.0010.000000T0000Z-140429T0215Z/
COFFEE TN-
900 PM CDT MON APR 28 2014

...THE TORNADO WARNING FOR COFFEE COUNTY IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND 
NO LONGER APPEARED CAPABLE OF PRODUCING A TORNADO.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR CENTRAL TENNESSEE.

LAT...LON 3534 8604 3536 8614 3533 8619 3534 8626
      3540 8628 3541 8625 3544 8625 3565 8602
      3566 8599 3561 8595 3559 8596 3553 8588
      3545 8589 3532 8600
TIME...MOT...LOC 0159Z 223DEG 41KT 3546 8612

$$

SHAMBURGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 7:13 PM CDT	Special Weather Statement	OHX	Grundy	47 min
Apr 28, 7:36 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy	54 min
Apr 28, 8:08 PM CDT	Special Weather Statement	OHX	Van Buren, Warren, White	52 min
Apr 28, 8:11 PM CDT	Areal Flood Advisory	OHX	Bedford, Cheatham, Davidson, Dickson, Giles, Hickman and 9 more	6 hr
Apr 28, 8:36 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Putnam, Van Buren, Warren, White	39 min
Apr 28, 8:41 PM CDT	River Flood Warning	OHX	Hickman	3 days
Apr 28, 8:41 PM CDT	River Flood Warning	OHX	Perry	58 hr
Apr 28, 9:26 PM CDT	River Flood Advisory	OHX	Davidson, Williamson	24 hr
Apr 28, 10:12 PM CDT	Special Weather Statement	OHX	Davidson, Rutherford, Wilson	48 min
Apr 29, 1:13 AM CDT	River Flood Warning	OHX	Hickman	8 hr
Apr 29, 5:07 AM CDT	River Flood Advisory	OHX	Humphreys	33 hr
Apr 29, 9:33 AM CDT	River Flood Advisory	OHX	Hickman	3 hr
Apr 29, 4:17 PM CDT	Special Weather Statement	OHX	Giles, Marshall	43 min
Apr 29, 4:23 PM CDT	Special Weather Statement	OHX	Lawrence	52 min
Apr 29, 4:42 PM CDT	River Flood Advisory	OHX	Cheatham	3 hr
Apr 29, 4:56 PM CDT	Special Weather Statement	OHX	Bedford	49 min
Apr 29, 5:08 PM CDT	Special Weather Statement	OHX	Warren, White	52 min
Apr 29, 5:41 PM CDT	Special Weather Statement	OHX	Cannon	49 min
Apr 29, 5:43 PM CDT	Special Weather Statement	OHX	Overton, Pickett	47 min

Nearby

Tornado Warnings in Tennessee, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.