Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Morristown, TN

January 25, 2021Cocke County, Tennessee

NWS Morristown, TN issued this special weather statement at Jan 25, 2021, 8:47 PM EST for Cocke County, Tennessee. It was in force for 43 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: Jan 25, 2021, 8:47 PM EST (01:47 UTC)
Expired: Jan 25, 2021, 9:30 PM EST
In force: 43 min
Issued by: NWS Morristown, TN

County Cocke County, TN

The radar

The Knoxville radar (KMRX), 50 km from the middle of the area, began a volume at 01:49 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.8 hours before the alert went out and 293 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: 1306 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 323 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 Jan 25, 7:05 PM EST, 1 hour 42 minutes earlier.

Area forecast discussion, Jan 25, 7:05 PM EST, 1 hour 42 minutes before

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Hazardous weather outlook, Jan 25, 3:13 PM EST, 5 hours 34 minutes before

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In the hours before

Special weather statement, Jan 25, 3:53 PM EST, 4 hours 54 minutes before

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Special weather statement, Jan 25, 4:41 PM EST, 4 hours 6 minutes before

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Special weather statement, Jan 25, 8:47 PM 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
Jan 25, 8:59 PM EST	Special Weather Statement	MRX	Polk	46 min
Jan 26, 6:10 AM EST	Areal Flood Advisory	MRX	Sevier	3 hr
Jan 26, 3:37 PM EST	Winter Storm Watch	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more	13 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.