Alert archive / Tennessee / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Nashville, TN

April 3, 2015Cumberland County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Apr 3, 2015, 6:04 PM CDT for Cumberland County, Tennessee. It was in force for 26 min. 3 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 3, 2015, 6:04 PM CDT (23:04 UTC)
Expired: Apr 3, 2015, 6:30 PM CDT
In force: 26 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Cumberland County, TN

The radar

The Knoxville radar (KMRX), 129 km from the middle of the area, began a volume at 23:04 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 3, 6:05 PM CDT	HAIL 1	Crossville, TN
Apr 3, 6:12 PM CDT	HAIL 0.88	Crossville, TN
Apr 3, 6:16 PM CDT	TSTM WND DMG	Crossville, TN	TREES DOWN ON FRED FORD ROAD AT GENESIS ROAD. ALSO NICKEL SIZE HAIL

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 3, 3:10 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.1 hours before the alert went out and 162 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: 135 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 990 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 274 m²/s²
0-3 km storm-relative helicity: 325 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

510 
WUUS54 KOHX 032304
SVROHX
TNC035-032330-
/O.NEW.KOHX.SV.W.0021.150403T2304Z-150403T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
604 PM CDT FRI APR 3 2015

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CUMBERLAND COUNTY IN MIDDLE TENNESSEE...

* UNTIL 630 PM CDT

* AT 604 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  CROSSVILLE...AND MOVING EAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FAIRFIELD GLADE AROUND 615 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE CRAB ORCHARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3589 8470 3585 8510 3602 8516 3609 8480
      3606 8479 3599 8471 3592 8468 3590 8468
TIME...MOT...LOC 2305Z 259DEG 39KT 3596 8500

HAIL...1.00IN
WIND...60MPH

$$

11

1 follow-up statement

485 
WWUS54 KOHX 032322
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
622 PM CDT FRI APR 3 2015

TNC035-032330-
/O.CON.KOHX.SV.W.0021.000000T0000Z-150403T2330Z/
CUMBERLAND TN-
622 PM CDT FRI APR 3 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
CUMBERLAND COUNTY UNTIL 630 PM CDT...

AT 620 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES EAST OF
FAIRFIELD GLADE...AND MOVING EAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EAST
CENTRAL CUMBERLAND COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3589 8470 3587 8490 3608 8487 3609 8480
      3606 8479 3599 8471 3592 8468 3590 8468
TIME...MOT...LOC 2322Z 259DEG 39KT 3599 8478

HAIL...1.00IN
WIND...60MPH

$$

BARNWELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 3:47 AM CDT	Wind Advisory	OHX	Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more	18 hr
Apr 3, 1:56 PM CDT	Severe Thunderstorm Warning	OHX	Robertson, Sumner	34 min
Apr 3, 3:52 PM CDT	Special Weather Statement	OHX	Dickson, Houston, Humphreys, Stewart	38 min
Apr 3, 4:12 PM CDT	Special Weather Statement	OHX	Robertson	33 min
Apr 3, 4:33 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner, Wilson	27 min
Apr 3, 4:52 PM CDT	Special Weather Statement	OHX	Davidson	23 min
Apr 3, 4:55 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Perry	50 min
Apr 3, 4:56 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Trousdale, Wilson	34 min
Apr 3, 5:00 PM CDT	Tornado Warning	OHX	Davidson, Sumner, Trousdale, Wilson	30 min
Apr 3, 5:02 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Wilson	43 min
Apr 3, 5:24 PM CDT	Special Weather Statement	OHX	Rutherford, Williamson	51 min
Apr 3, 5:28 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Williamson	47 min
Apr 3, 5:29 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith, Wilson	31 min
Apr 3, 5:34 PM CDT	Special Weather Statement	OHX	Maury	41 min
Apr 3, 5:37 PM CDT	Special Weather Statement	OHX	Jackson, Overton, Smith	38 min
Apr 3, 5:40 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Wilson	35 min
Apr 3, 5:58 PM CDT	Severe Thunderstorm Warning	OHX	Jackson, Putnam, Smith, White	47 min
Apr 3, 6:02 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Van Buren, Warren, White	43 min
Apr 3, 6:14 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Coffee, Rutherford, Warren	46 min
Apr 3, 6:41 PM CDT	Special Weather Statement	OHX	Cumberland, Fentress, White	49 min
Apr 3, 6:41 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Van Buren, Warren	49 min
Apr 3, 6:47 PM CDT	Special Weather Statement	OHX	Bedford, Coffee, Giles, Grundy, Marshall	43 min
Apr 3, 6:51 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, White	39 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2015 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.