Alert archive / Tennessee / Freeze Warnings in 2019

Freeze Warning 3, NWS Morristown, TN

October 31, 201933 counties in Tennessee; 7 counties in Virginia; Cherokee County, Clay County, North Carolina

NWS Morristown, TN issued this freeze warning at Oct 31, 2019, 3:16 AM EDT for 33 counties in Tennessee; 7 counties in Virginia; Cherokee County, Clay County, North Carolina. It took effect at Nov 1, 2019, 2:00 AM EDT. 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: Oct 31, 2019, 3:16 AM EDT (07:16 UTC)
In effect from: Nov 1, 2019, 2:00 AM EDT
Expired: Nov 1, 2019, 10:00 AM EDT
In force: 8 hr
Issued by: NWS Morristown, TN

All 42 counties

Cherokee County, NC, Clay County, NC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson 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, Sullivan County, TN, Unicoi County, TN, Union County, TN, Washington County, TN, City of Bristol, VA, City of Norton, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA

The radar

The Knoxville radar (KMRX), 27 km from the middle of the area, began a volume at 07:20 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, 7.3 hours before the alert went out and 265 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 766 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 34 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 Oct 31, 2:05 AM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Oct 31, 2:05 AM EDT, 1 hour 11 minutes before

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Hazardous weather outlook, Oct 30, 3:46 PM EDT, 11 hours 30 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
Oct 31, 8:41 AM EDT	Special Weather Statement	MRX	Bledsoe, Marion, Sequatchie	49 min
Oct 31, 9:42 AM EDT	Special Weather Statement	MRX	Rhea, Roane	48 min
Oct 31, 10:32 AM EDT	Special Weather Statement	MRX	Anderson, Roane	43 min
Oct 31, 10:58 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Knox, Union	47 min
Oct 31, 11:24 AM EDT	Severe Thunderstorm Warning	MRX	Grainger, Jefferson, Knox	36 min
Oct 31, 11:33 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock, Union	42 min
Oct 31, 11:40 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hamblen, Hancock, Hawkins	50 min
Oct 31, 11:44 AM EDT	Severe Thunderstorm Warning	MRX	Cocke, Grainger, Greene, Hamblen, Jefferson, Sevier	33 min
Oct 31, 11:50 AM EDT	Tornado Warning	MRX	Claiborne, Hancock	40 min
Oct 31, 12:11 PM EDT	Severe Thunderstorm Warning	MRX	Hamblen, Hancock, Hawkins, Sullivan	34 min
Oct 31, 12:27 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Greene, Hawkins	48 min
Oct 31, 12:47 PM EDT	Severe Thunderstorm Warning	MRX	Hawkins, Sullivan	43 min
Oct 31, 12:58 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Sullivan, Washington	27 min
Oct 31, 1:24 PM EDT	Special Weather Statement	MRX	Sullivan	66 min
Oct 31, 12:26 PM EDT	Severe Thunderstorm Warning	MRX	Lee, Scott, Wise, City of Norton	49 min

Nearby

Freeze Warnings in Tennessee, 2019 Freeze Warnings in Virginia, 2019 Freeze Warnings in North Carolina, 2019 Every freeze warning in 2019

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.