Alert archive / Tennessee / Freeze Warnings in 2015

Freeze Warning 5, NWS Morristown, TN

November 13, 201521 counties in Tennessee

NWS Morristown, TN issued this freeze warning at Nov 13, 2015, 1:12 PM EST for 21 counties in Tennessee. It took effect at Nov 14, 2015, 1:00 AM EST. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 13, 2015, 1:12 PM EST (18:12 UTC)
In effect from: Nov 14, 2015, 1:00 AM EST
Expired: Nov 14, 2015, 9:00 AM EST
In force: 8 hr
Issued by: NWS Morristown, TN

All 21 counties

Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Cocke County, TN, Grainger County, TN, Hamblen County, TN, Hamilton County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Sequatchie County, TN, Sevier County, TN, Union County, TN

The radar

The Knoxville radar (KMRX), 99 km from the middle of the area, began a volume at 18:15 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 12:00Z, 6.2 hours before the alert went out and 258 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: 1685 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -231 m²/s²
0-3 km storm-relative helicity: -159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze 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 freeze warning went out at Nov 12, 6:02 PM EST, 19 hours 10 minutes earlier.

Area forecast discussion, Nov 12, 6:02 PM EST, 19 hours 10 minutes before

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Hazardous weather outlook, Nov 12, 3:05 PM EST, 22 hours 7 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
Nov 13, 2:48 AM EST	Freeze Watch	MRX	Anderson, Bledsoe, Blount, Bradley, Cocke, Grainger and 15 more	10 hr

Nearby

Freeze Warnings in Tennessee, 2015 Every freeze warning in 2015

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.