Alert archive / Tennessee / Tornado Warnings in 2000

Tornado Warning 37, NWS Nashville, TN

April 20, 2000Macon County, Tennessee

NWS Nashville, TN issued this tornado warning at Apr 20, 2000, 6:24 PM CDT for Macon County, Tennessee. It was in force for 36 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 20, 2000, 6:24 PM CDT (23:24 UTC)
Expired: Apr 20, 2000, 7:00 PM CDT
In force: 36 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Macon County, TN

The radar

The Nashville radar (KOHX), 59 km from the middle of the area, began a volume at 23:27 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 20, 6:45 PM CDT	Hail 1	Willette, TN	Sheriff's office reported quarter size hail.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 20, 5:15 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.4 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1180 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 319 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

774 
WFUS54 KOHX 202333 COR
TORBNA
TNC111-169-189-210000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
630 PM CDT THU 20 2000

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  MACON COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF LAFAYETTE
  TROUSDALE COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF HARTSVILLE
  NORTH CENTRAL WILSON COUNTY IN TENNESSEE

* UNTIL 700 PM CDT

* AT 621 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A DEVELOPING TORNADO 10 MILES SOUTH OF
  HARTSVILLE...MOVING NORTHEAST AT 50 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  HARTSVILLE AT 640 PM CDT

A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM CDT THURSDAY 
EVENING FOR MIDDLE TENNESSEE.
$$
14
JBW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 1:54 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Wilson	51 min
Apr 20, 1:58 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	32 min
Apr 20, 2:28 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith	47 min
Apr 20, 3:06 PM CDT	Severe Thunderstorm Warning	OHX	Putnam	24 min
Apr 20, 3:15 PM CDT	Severe Thunderstorm Warning	OHX	Overton	30 min
Apr 20, 4:14 PM CDT	Severe Thunderstorm Warning	OHX	Dickson	31 min
Apr 20, 4:26 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson	49 min
Apr 20, 4:36 PM CDT	Tornado Warning	OHX	Cheatham	24 min
Apr 20, 4:50 PM CDT	Tornado Warning	OHX	Davidson	25 min
Apr 20, 4:56 PM CDT	Severe Thunderstorm Warning	OHX	Lewis, Wayne	34 min
Apr 20, 5:07 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	53 min
Apr 20, 5:13 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury	17 min
Apr 20, 5:27 PM CDT	Severe Thunderstorm Warning	OHX	Maury	48 min
Apr 20, 5:34 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	41 min
Apr 20, 5:39 PM CDT	Tornado Warning	OHX	Lewis, Maury	51 min
Apr 20, 5:49 PM CDT	Tornado Warning	OHX	Davidson, Rutherford, Williamson	26 min
Apr 20, 6:19 PM CDT	Tornado Warning	OHX	Wilson	26 min
Apr 20, 6:24 PM CDT	Severe Thunderstorm Warning	OHX	Marshall	21 min
Apr 20, 6:24 PM CDT	Tornado Warning	OHX	Trousdale, Wilson	36 min
Apr 20, 6:37 PM CDT	Tornado Warning	OHX	DeKalb	23 min
Apr 20, 6:41 PM CDT	Tornado Warning	OHX	Bedford	49 min
Apr 20, 6:54 PM CDT	Tornado Warning	OHX	Putnam	51 min

Nearby

Tornado Warnings in Tennessee, 2000 Every tornado warning in 2000 Tornadoes in 2000

Sources

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