Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Morristown, TN

June 11, 2021Loudon County, Tennessee

NWS Morristown, TN issued this special weather statement at Jun 11, 2021, 7:06 PM EDT for Loudon County, Tennessee. It was in force for 39 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: Jun 11, 2021, 7:06 PM EDT (23:06 UTC)
Expired: Jun 11, 2021, 7:45 PM EDT
In force: 39 min
Issued by: NWS Morristown, TN

County Loudon County, TN

The radar

The Knoxville radar (KMRX), 107 km from the middle of the area, began a volume at 23:10 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

Nashville Metro, TN (KBNA), launched 12:00Z, 11.1 hours before the alert went out and 214 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: 881 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 543 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Jun 11, 3:14 PM EDT, 3 hours 52 minutes earlier.

Area forecast discussion, Jun 11, 3:14 PM EDT, 3 hours 52 minutes before

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Hazardous weather outlook, Jun 11, 3:16 PM EDT, 3 hours 50 minutes before

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In the hours before

Special weather statement, Jun 11, 7:06 PM EDT, 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
Jun 11, 3:58 AM EDT	Flash Flood Watch	MRX	Anderson, Blount, Campbell, Carter, Claiborne, Cocke and 14 more	18 hr
Jun 11, 5:01 AM EDT	Areal Flood Advisory	MRX	Campbell	3 hr
Jun 11, 12:56 PM EDT	Areal Flood Advisory	MRX	Carter, Sullivan, Washington	4 hr
Jun 11, 1:55 PM EDT	Areal Flood Advisory	MRX	Anderson, Morgan, Roane	3 hr
Jun 11, 3:22 PM EDT	Areal Flood Advisory	MRX	Greene, Washington	3 hr
Jun 11, 4:31 PM EDT	Areal Flood Advisory	MRX	Anderson, Loudon, Morgan, Roane	3 hr
Jun 11, 1:23 PM EDT	Areal Flood Advisory	MRX	Washington	3 hr
Jun 11, 1:49 PM EDT	Areal Flood Advisory	MRX	Lee	3 hr
Jun 11, 2:50 PM EDT	Areal Flood Advisory	MRX	Russell, Washington	3 hr

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.