Alert archive / Tennessee / Wind Chill Advisories in 2014

Wind Chill Advisory 3, NWS Morristown, TN

January 21, 20147 counties in Tennessee; 5 counties in Virginia

NWS Morristown, TN issued this wind chill advisory at Jan 21, 2014, 3:08 PM EST for 7 counties in Tennessee; 5 counties in Virginia. It took effect at Jan 21, 2014, 10:00 PM EST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Jan 21, 2014, 3:08 PM EST (20:08 UTC)
In effect from: Jan 21, 2014, 10:00 PM EST
Expired: Jan 22, 2014, 10:00 AM EST
In force: 12 hr
Issued by: NWS Morristown, TN

Counties Blount County, TN, Carter County, TN, Cocke County, TN, Greene County, TN, Johnson County, TN, Sevier County, TN, Unicoi County, TN, City of Bristol, VA, City of Norton, VA, Russell County, VA, Washington County, VA, Wise County, VA

The radar

The Knoxville radar (KMRX), 75 km from the middle of the area, began a volume at 20:11 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.1 hours before the alert went out and 355 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: 3291 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 204 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 wind chill advisory 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 wind chill advisory went out at Jan 20, 6:41 PM EST, 20 hours 27 minutes earlier.

Area forecast discussion, Jan 20, 6:41 PM EST, 20 hours 27 minutes before

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Hazardous weather outlook, Jan 20, 3:18 PM EST, 23 hours 50 minutes before

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Nearby

Wind Chill Advisories in Tennessee, 2014 Wind Chill Advisories in Virginia, 2014 Every wind chill advisory in 2014

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.