Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Morristown, TN

December 11, 2021Carter County, Johnson County, Washington County, Tennessee

NWS Morristown, TN issued this special weather statement at Dec 11, 2021, 11:49 AM EST for Carter County, Johnson County, Washington County, Tennessee. It was in force for 41 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: Dec 11, 2021, 11:49 AM EST (16:49 UTC)
Expired: Dec 11, 2021, 12:30 PM EST
In force: 41 min
Issued by: NWS Morristown, TN
Hail: 0.00 in
Wind: 40

Counties Carter County, TN, Johnson County, TN, Washington County, TN

The radar

The Knoxville radar (KMRX), 113 km from the middle of the area, began a volume at 16:48 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, 4.8 hours before the alert went out and 204 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: 481 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 284 m²/s²
0-3 km storm-relative helicity: 258 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Dec 11, 11:14 AM EST, 35 minutes earlier.

Area forecast discussion, Dec 11, 11:14 AM EST, 35 minutes before

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Hazardous weather outlook, Dec 11, 3:15 AM EST, 8 hours 34 minutes before

Hazardous Weather Outlook
National Weather Service Morristown TN
315 AM EST Sat Dec 11 2021

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-120815-
Cherokee-Clay-Scott-Campbell-Claiborne-Hancock-Hawkins-Sullivan-
Johnson-Morgan-Anderson-Union-Grainger-Hamblen-Northwest Cocke-
Cocke Smoky Mountains-Northwest Greene-Southeast Greene-
Washington-Unicoi-Northwest Carter-Southeast Carter-Roane-Loudon-
Knox-Jefferson-Northwest Blount-Blount Smoky Mountains-
North Sevier-Sevier Smoky Mountains-Sequatchie-Bledsoe-Rhea-Meigs-
McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley-
West Polk-East Polk-Lee-Wise-Russell-
315 AM EST Sat Dec 11 2021 /215 AM CST Sat Dec 11 2021/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...Today and Tonight

High winds will continue to develop across the mountains today
with windy conditions area-wide. A high wind warning has been
issued for the Smoky Mountains. A wind advisory is in effect for
the rest of east Tennessee and southwest Virginia.

A line of storms will move quickly across the area this morning
into early afternoon. Strong gusty winds are likely with localized
damaging winds. Localized down trees and power lines are
expected. An isolated tornado is possible across the Plateau and
southeast Tennessee this morning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

In the hours before

Special weather statement, Dec 11, 11:28 AM EST, 21 minutes before

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Local storm report, Dec 11, 11:29 AM EST, 20 minutes before

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Special weather statement, Dec 11, 11:32 AM EST, 17 minutes before

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Local storm report, Dec 11, 11:39 AM EST, 10 minutes before

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Local storm report, Dec 11, 11:47 AM EST, 2 minutes before

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Special weather statement, Dec 11, 11:49 AM EST, 0 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
Dec 11, 5:57 AM EST	Severe Thunderstorm Warning	MRX	Campbell, Scott	48 min
Dec 11, 6:39 AM EST	Severe Thunderstorm Warning	MRX	Campbell, Scott	51 min
Dec 11, 7:29 AM EST	Severe Thunderstorm Warning	MRX	Campbell, Scott	46 min
Dec 11, 7:43 AM EST	Flash Flood Warning	MRX	Scott	4 hr
Dec 11, 7:51 AM EST	Special Weather Statement	MRX	Campbell, Morgan	54 min
Dec 11, 8:23 AM EST	Severe Thunderstorm Warning	MRX	Marion, Sequatchie	52 min
Dec 11, 8:23 AM EST	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Scott	37 min
Dec 11, 9:02 AM EST	Severe Thunderstorm Warning	MRX	Bledsoe, Bradley, Hamilton, McMinn, Meigs, Rhea and 1 more	43 min
Dec 11, 9:18 AM EST	Special Weather Statement	MRX	Hamilton	42 min
Dec 11, 9:18 AM EST	Severe Thunderstorm Warning	MRX	Bledsoe, Meigs, Rhea, Roane	42 min
Dec 11, 9:34 AM EST	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, Marion	41 min
Dec 11, 9:44 AM EST	Severe Thunderstorm Warning	MRX	Bradley, Loudon, McMinn, Meigs, Monroe, Roane	46 min
Dec 11, 9:51 AM EST	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Loudon, Roane	39 min
Dec 11, 10:15 AM EST	Severe Thunderstorm Warning	MRX	Bradley, McMinn, Monroe, Polk	45 min
Dec 11, 10:21 AM EST	Severe Thunderstorm Warning	MRX	Blount, Grainger, Jefferson, Knox, Sevier	39 min
Dec 11, 10:25 AM EST	Severe Thunderstorm Warning	MRX	Blount, Loudon, McMinn, Monroe	50 min
Dec 11, 10:30 AM EST	Special Weather Statement	MRX	Bradley	45 min
Dec 11, 10:53 AM EST	Severe Thunderstorm Warning	MRX	Cocke, Grainger, Greene, Hamblen, Hawkins, Jefferson	35 min
Dec 11, 10:59 AM EST	Special Weather Statement	MRX	Polk	46 min
Dec 11, 10:59 AM EST	Severe Thunderstorm Warning	MRX	Blount, Cocke, Jefferson, Sevier	30 min
Dec 11, 11:28 AM EST	Special Weather Statement	MRX	Sullivan	47 min
Dec 11, 10:38 AM EST	Special Weather Statement	MRX	Wise, City of Norton	22 min
Dec 11, 11:32 AM EST	Special Weather Statement	MRX	Cherokee	43 min
Dec 11, 12:18 PM EST	Special Weather Statement	MRX	Cherokee, Clay	42 min

Nearby

Special Weather Statements in Tennessee, 2021 Every special weather statement in 2021

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.