Alert archive / Tennessee / Freeze Warnings in 2016

Freeze Warning 8, NWS Morristown, TN

April 9, 201622 counties in Tennessee; Cherokee County, Clay County, North Carolina

NWS Morristown, TN issued this freeze warning at Apr 9, 2016, 3:27 AM EDT for 22 counties in Tennessee; Cherokee County, Clay County, North Carolina. It took effect at Apr 10, 2016, 12:00 AM EDT. It was in force for 10 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: Apr 9, 2016, 3:27 AM EDT (07:27 UTC)
In effect from: Apr 10, 2016, 12:00 AM EDT
Expired: Apr 10, 2016, 10:00 AM EDT
In force: 10 hr
Issued by: NWS Morristown, TN

All 24 counties

Cherokee County, NC, Clay County, NC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Grainger 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, Morgan County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Union County, TN

The radar

The Knoxville radar (KMRX), 105 km from the middle of the area, began a volume at 07:31 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 00:00Z, 7.5 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: 8 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1972 m above ground
0-6 km bulk shear: 105 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 267 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 Apr 8, 7:41 PM EDT, 7 hours 46 minutes earlier.

Area forecast discussion, Apr 8, 7:41 PM EDT, 7 hours 46 minutes before

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Hazardous weather outlook, Apr 8, 3:13 PM EDT, 12 hours 14 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
Apr 8, 9:53 PM EDT	Special Weather Statement	MRX	Carter, Johnson, Washington	52 min
Apr 9, 3:27 AM EDT	Hard Freeze Warning	MRX	Blount, Campbell, Carter, Claiborne, Cocke, Grainger and 15 more	31 hr

Nearby

Freeze Warnings in Tennessee, 2016 Freeze Warnings in North Carolina, 2016 Every freeze warning in 2016

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.