Alert archive / Tennessee / High Wind Watches in 2013

High Wind Watch 1, NWS Morristown, TN

January 29, 20139 counties in Tennessee; Russell County, Washington County, City of Bristol, Virginia; Cherokee County, Clay County, North Carolina

NWS Morristown, TN issued this high wind watch at Jan 29, 2013, 4:34 AM EST for 9 counties in Tennessee; Russell County, Washington County, City of Bristol, Virginia; Cherokee County, Clay County, North Carolina. It took effect at Jan 30, 2013, 5:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 29, 2013, 4:34 AM EST (09:34 UTC)
In effect from: Jan 30, 2013, 5:00 AM EST
Expired: Jan 29, 2013, 3:34 PM EST
In force
Issued by: NWS Morristown, TN

Counties Cherokee County, NC, Clay County, NC, Blount County, TN, Carter County, TN, Cocke County, TN, Greene County, TN, Johnson County, TN, Monroe County, TN, Polk County, TN, Sevier County, TN, Unicoi County, TN, City of Bristol, VA, Russell County, VA, Washington County, VA

The radar

The Knoxville radar (KMRX), 39 km from the middle of the area, began a volume at 09:31 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 9.6 hours before the alert went out and 317 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: 900 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 136 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 high wind watch 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 high wind watch went out at Jan 29, 4:14 AM EST, 20 minutes earlier.

Area forecast discussion, Jan 29, 4:14 AM EST, 20 minutes before

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Hazardous weather outlook, Jan 28, 2:56 PM EST, 13 hours 38 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 29, 11:45 AM EST	Wind Advisory	MRX	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 25 more	28 hr
Jan 29, 3:34 PM EST	High Wind Warning	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 3 more	24 hr

Nearby

High Wind Watches in Tennessee, 2013 High Wind Watches in Virginia, 2013 High Wind Watches in North Carolina, 2013 Every high wind watch in 2013

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.