Alert archive / Tennessee / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 138, NWS Morristown, TN

July 20, 2018Grainger County, Hamblen County, Hawkins County, Tennessee; Scott County, Virginia

NWS Morristown, TN issued this severe thunderstorm warning at Jul 20, 2018, 9:42 PM EDT for Grainger County, Hamblen County, Hawkins County, Tennessee; Scott County, Virginia. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 20, 2018, 9:42 PM EDT (01:42 UTC)
Expired: Jul 20, 2018, 10:45 PM EDT
In force: 63 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Grainger County, TN, Hamblen County, TN, Hawkins County, TN, Scott County, VA

The radar

The Knoxville radar (KMRX), 39 km from the middle of the area, began a volume at 01:43 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
Jul 20, 8:02 PM EDT	Tornado Watch	SPC	7 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 7:40 PM EDT, 2 hours 2 minutes earlier.

Area forecast discussion, Jul 20, 7:40 PM EDT, 2 hours 2 minutes before

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Hazardous weather outlook, Jul 20, 3:21 PM EDT, 6 hours 21 minutes before

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In the hours before

Special weather statement, Jul 20, 7:28 PM EDT, 2 hours 14 minutes before

Special Weather Statement
National Weather Service Morristown TN
728 PM EDT FRI JUL 20 2018

VAZ002-210015-
Wise VA-
728 PM EDT FRI JUL 20 2018

...SIGNIFICANT WEATHER ADVISORY FOR WISE COUNTY AND THE CITY OF
NORTON UNTIL 815 PM EDT...

At 727 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Rockhouse to near Jenkins to Dongola.
Movement was southeast at 40 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Norton, Wise, Coeburn, Pound, St. Paul and Pardee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3713 8255 3703 8248 3698 8237 3696 8236
      3697 8233 3691 8230 3691 8232 3689 8232
      3689 8237 3688 8240 3689 8242 3688 8263
      3685 8266 3699 8284 3701 8283 3701 8278
      3705 8272 3712 8272 3720 8255
TIME...MOT...LOC 2327Z 306DEG 34KT 3731 8241 3714 8261 3709 8285

05/MA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 9:02 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock	58 min
Jul 20, 9:12 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Scott	48 min
Jul 20, 9:56 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Union	49 min
Jul 20, 10:10 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Greene, Jefferson, Sullivan, Unicoi, Washington	65 min
Jul 20, 10:17 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Sevier	58 min
Jul 20, 10:31 PM EDT	Tornado Warning	MRX	Bledsoe, Rhea	44 min
Jul 20, 10:44 PM EDT	Severe Thunderstorm Warning	MRX	Hamblen	16 min
Jul 20, 10:48 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Unicoi	57 min
Jul 20, 11:10 PM EDT	Tornado Warning	MRX	Bledsoe, Meigs, Rhea	50 min
Jul 20, 11:13 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Sevier	32 min
Jul 20, 11:18 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Rhea	42 min
Jul 20, 11:42 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, McMinn, Meigs, Rhea	48 min
Jul 20, 11:47 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Meigs, Rhea, Roane	3 hr
Jul 21, 12:02 AM EDT	Special Weather Statement	MRX	Bledsoe	43 min
Jul 21, 12:11 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Hamilton, Rhea, Sequatchie	49 min
Jul 21, 12:14 AM EDT	Special Weather Statement	MRX	Scott	46 min
Jul 21, 12:24 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, McMinn, Meigs, Polk	51 min
Jul 21, 12:55 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Hamilton, Meigs, Rhea	50 min
Jul 21, 12:58 AM EDT	Areal Flood Advisory	MRX	McMinn, Meigs, Rhea	3 hr
Jul 21, 12:58 AM EDT	Severe Thunderstorm Warning	MRX	Polk	62 min
Jul 21, 1:16 AM EDT	Areal Flood Advisory	MRX	Bledsoe, Rhea	3 hr
Jul 21, 1:21 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Rhea	39 min
Jul 21, 1:27 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Scott	48 min
Jul 21, 1:28 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, McMinn	47 min
Jul 21, 2:02 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	28 min
Jul 21, 2:11 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Morgan, Roane, Scott	52 min
Jul 21, 2:16 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Grainger, Knox, Union	59 min
Jul 21, 2:39 AM EDT	Areal Flood Advisory	MRX	Bradley, McMinn, Polk	3 hr
Jul 21, 2:54 AM EDT	Special Weather Statement	MRX	Blount, Loudon, Roane	66 min
Jul 21, 3:06 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Rhea	39 min
Jul 21, 3:10 AM EDT	Special Weather Statement	MRX	Cocke, Grainger, Hamblen, Jefferson	50 min
Jul 21, 3:30 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Hamilton, Meigs, Rhea	45 min
Jul 21, 3:36 AM EDT	Areal Flood Warning	MRX	Bledsoe, Bradley, Hamilton, McMinn, Meigs, Rhea	3 hr
Jul 21, 3:41 AM EDT	Severe Thunderstorm Warning	MRX	Hamilton, Marion, Sequatchie	48 min
Jul 21, 3:53 AM EDT	Severe Thunderstorm Warning	MRX	McMinn, Monroe	41 min
Jul 21, 4:05 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, McMinn, Polk	40 min
Jul 21, 4:33 AM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton, Marion, Polk	117 min
Jul 21, 6:39 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe	36 min
Jul 21, 7:05 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Hamilton, Meigs, Rhea	25 min
Jul 21, 7:24 AM EDT	Special Weather Statement	MRX	Bradley, Polk	36 min
Jul 21, 4:06 PM EDT	Special Weather Statement	MRX	Knox	39 min
Jul 21, 4:17 PM EDT	Special Weather Statement	MRX	Monroe	43 min
Jul 21, 4:45 PM EDT	Special Weather Statement	MRX	Hancock, Hawkins	60 min
Jul 21, 4:47 PM EDT	Special Weather Statement	MRX	Sevier	58 min
Jul 21, 5:12 PM EDT	Special Weather Statement	MRX	Bradley	63 min
Jul 21, 5:19 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, McMinn, Meigs	56 min
Jul 21, 5:33 PM EDT	Special Weather Statement	MRX	Monroe	42 min
Jul 21, 5:44 PM EDT	Special Weather Statement	MRX	Grainger	46 min
Jul 21, 5:49 PM EDT	Special Weather Statement	MRX	Bradley	26 min
Jul 21, 5:53 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton	37 min
Jul 21, 6:07 PM EDT	Special Weather Statement	MRX	Polk	53 min
Jul 21, 6:24 PM EDT	Special Weather Statement	MRX	Monroe	51 min
Jul 21, 6:26 PM EDT	Severe Thunderstorm Warning	MRX	Polk	49 min
Jul 21, 7:00 PM EDT	Special Weather Statement	MRX	Blount	30 min
Jul 21, 7:15 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Sevier	34 min
Jul 20, 8:14 PM EDT	Special Weather Statement	MRX	Scott, Wise, City of Norton	46 min
Jul 20, 9:23 PM EDT	Severe Thunderstorm Warning	MRX	Lee	37 min
Jul 20, 11:50 PM EDT	Areal Flood Advisory	MRX	Wise, City of Norton	3 hr
Jul 21, 4:15 PM EDT	Special Weather Statement	MRX	Russell	45 min
Jul 21, 4:59 PM EDT	Special Weather Statement	MRX	Scott	61 min
Jul 21, 5:43 PM EDT	Special Weather Statement	MRX	Russell	47 min
Jul 21, 6:34 PM EDT	Special Weather Statement	MRX	Smyth	41 min
Jul 21, 6:10 PM EDT	Special Weather Statement	MRX	Cherokee	50 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2018 Severe Thunderstorm Warnings in Virginia, 2018 Every severe thunderstorm warning in 2018

Sources

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