Alert archive / Tennessee / Winter Storm Warnings in 2015

Winter Storm Warning 6, NWS Morristown, TN

March 4, 201510 counties in Tennessee; 7 counties in Virginia

NWS Morristown, TN issued this winter storm warning at Mar 4, 2015, 2:30 AM CST for 10 counties in Tennessee; 7 counties in Virginia. It took effect at Mar 5, 2015, 12:00 AM CST. It was in force for 14 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: Mar 4, 2015, 2:30 AM CST (08:30 UTC)
In effect from: Mar 5, 2015, 12:00 AM CST
Expired: Mar 5, 2015, 2:13 PM CST
In force: 14 hr
Issued by: NWS Morristown, TN

Counties Bledsoe County, TN, Campbell County, TN, Claiborne County, TN, Hancock County, TN, Marion County, TN, Morgan County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie 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), 31 km from the middle of the area, began a volume at 08:32 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, 8.5 hours before the alert went out and 260 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: 15 J/kg
Mixed-layer CIN: -243 J/kg
Mixed-layer LCL: 607 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 227 m²/s²
0-3 km storm-relative helicity: 249 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 winter storm 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 winter storm warning went out at Mar 4, 2:04 AM CST, 26 minutes earlier.

Area forecast discussion, Mar 4, 2:04 AM CST, 26 minutes before

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Hazardous weather outlook, Mar 3, 3:45 AM CST, 22 hours 45 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
Mar 4, 10:29 AM CST	River Flood Warning	MRX	Grainger, Hancock	57 hr
Mar 4, 10:29 AM CST	River Flood Warning	MRX	Claiborne, Grainger, Hancock	3 days
Mar 4, 10:29 AM CST	River Flood Warning	MRX	Claiborne, Hancock	72 hr
Mar 4, 12:06 PM CST	Wind Advisory	MRX	Anderson, Bledsoe, Blount, Bradley, Carter, Cocke and 22 more	6 hr
Mar 4, 1:35 PM CST	Winter Weather Advisory	MRX	Anderson, Blount, Bradley, Carter, Cocke, Grainger and 17 more	25 hr
Mar 4, 2:24 PM CST	River Flood Warning	MRX	Hancock	34 hr
Mar 4, 5:40 AM CST	Areal Flood Warning	MRX	Wise, City of Norton	6 hr
Mar 4, 7:31 AM CST	Areal Flood Warning	MRX	Lee	54 hr
Mar 4, 11:30 AM CST	Areal Flood Warning	MRX	Wise, City of Norton	24 hr
Mar 4, 11:57 AM CST	Areal Flood Warning	MRX	Russell	24 hr
Mar 4, 2:24 PM CST	River Flood Warning	MRX	Russell, Scott	45 hr

Nearby

Winter Storm Warnings in Tennessee, 2015 Winter Storm Warnings in Virginia, 2015 Every winter storm 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.