Alert archive / Tennessee / Special Weather Statements in 2020

Special Weather Statement, NWS Morristown, TN

August 6, 2020Sullivan County, Tennessee; City of Bristol, Virginia

NWS Morristown, TN issued this special weather statement at Aug 6, 2020, 3:20 PM EDT for Sullivan County, Tennessee; City of Bristol, Virginia. It was in force for 40 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: Aug 6, 2020, 3:20 PM EDT (19:20 UTC)
Expired: Aug 6, 2020, 4:00 PM EDT
In force: 40 min
Issued by: NWS Morristown, TN

Counties Sullivan County, TN, City of Bristol, VA

The radar

The Knoxville radar (KMRX), 135 km from the middle of the area, began a volume at 19:22 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 nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.3 hours before the alert went out and 196 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: 864 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 667 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 5, 7:42 PM EDT, 19 hours 38 minutes earlier.

Area forecast discussion, Aug 5, 7:42 PM EDT, 19 hours 38 minutes before

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Hazardous weather outlook, Aug 5, 3:26 PM EDT, 23 hours 54 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 8:28 PM EDT	Special Weather Statement	MRX	Claiborne	47 min
Aug 5, 8:52 PM EDT	Special Weather Statement	MRX	Claiborne	38 min
Aug 6, 10:41 AM EDT	Areal Flood Advisory	MRX	Bledsoe, Rhea	4 hr
Aug 6, 12:25 PM EDT	Areal Flood Advisory	MRX	Rhea, Roane	3 hr
Aug 6, 1:11 PM EDT	Flash Flood Warning	MRX	Bledsoe, Rhea	3 hr
Aug 6, 1:24 PM EDT	Special Weather Statement	MRX	Knox	51 min
Aug 6, 1:30 PM EDT	Special Weather Statement	MRX	Bledsoe	45 min
Aug 6, 2:00 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Hamilton, Sequatchie	3 hr
Aug 6, 2:38 PM EDT	Special Weather Statement	MRX	Bradley	52 min
Aug 6, 2:44 PM EDT	Special Weather Statement	MRX	Sevier	46 min
Aug 6, 3:47 PM EDT	Special Weather Statement	MRX	Cocke	43 min
Aug 6, 4:20 PM EDT	Special Weather Statement	MRX	Greene	40 min
Aug 6, 4:26 PM EDT	Areal Flood Advisory	MRX	Greene, Unicoi, Washington	3 hr
Aug 6, 5:12 PM EDT	Special Weather Statement	MRX	Polk	48 min
Aug 6, 5:22 PM EDT	Special Weather Statement	MRX	Cocke	53 min
Aug 6, 5:48 PM EDT	Severe Thunderstorm Warning	MRX	Cocke	42 min
Aug 6, 5:54 PM EDT	Areal Flood Advisory	MRX	Cocke	3 hr
Aug 6, 6:03 PM EDT	Areal Flood Advisory	MRX	Blount, Sevier	117 min
Aug 6, 6:14 PM EDT	Special Weather Statement	MRX	Greene	46 min
Aug 6, 6:34 PM EDT	Special Weather Statement	MRX	Monroe	41 min
Aug 6, 6:46 PM EDT	Areal Flood Advisory	MRX	Cocke, Greene	119 min
Aug 6, 6:52 PM EDT	Special Weather Statement	MRX	Greene	53 min
Aug 6, 7:45 PM EDT	Special Weather Statement	MRX	Union	45 min
Aug 6, 1:37 PM EDT	Special Weather Statement	MRX	City of Norton	38 min
Aug 6, 1:52 PM EDT	Areal Flood Advisory	MRX	Wise	113 min
Aug 6, 2:22 PM EDT	Special Weather Statement	MRX	Russell	38 min
Aug 6, 2:52 PM EDT	Special Weather Statement	MRX	Russell	53 min
Aug 6, 3:14 PM EDT	Special Weather Statement	MRX	Washington	46 min
Aug 6, 1:33 PM EDT	Special Weather Statement	MRX	Cherokee	42 min

Nearby

Special Weather Statements in Tennessee, 2020 Special Weather Statements in Virginia, 2020 Every special weather statement in 2020

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.