Alert archive / Tennessee / Wind Chill Advisories in 2015

Wind Chill Advisory 6, NWS Morristown, TN

February 15, 20158 counties in Tennessee; 5 counties in Virginia

NWS Morristown, TN issued this wind chill advisory at Feb 15, 2015, 11:10 AM EST for 8 counties in Tennessee; 5 counties in Virginia. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Feb 15, 2015, 11:10 AM EST (16:10 UTC)
Expired
Feb 15, 2015, 3:39 PM EST
In force
4 hr
Issued by
NWS Morristown, TN

Counties Blount County, TN, Carter County, TN, Cocke County, TN, Greene County, TN, Johnson County, TN, Monroe 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), 62 km from the middle of the area, began a volume at 16:14 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.2 hours before the alert went out and 256 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2015-02-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2015-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -185 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
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
1760 m above ground
0-6 km bulk shear
96 kt
0-1 km storm-relative helicity
-185 m²/s²
0-3 km storm-relative helicity
-185 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 Feb 15, 10:39 AM EST, 31 minutes earlier.

Area forecast discussion, Feb 15, 10:39 AM EST, 31 minutes before
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Hazardous weather outlook, Feb 15, 4:59 AM EST, 6 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
459 AM EST SUN FEB 15 2015

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-161000-
CHEROKEE-CLAY-SCOTT TN-CAMPBELL-CLAIBORNE-HANCOCK-HAWKINS-
SULLIVAN-JOHNSON-MORGAN-ANDERSON-UNION-GRAINGER-HAMBLEN-
NORTHWEST COCKE-COCKE SMOKY MOUNTAINS-NORTHWEST GREENE-
SOUTHEAST GREENE-WASHINGTON TN-UNICOI-NORTHWEST CARTER-
SOUTHEAST CARTER-ROANE-LOUDON-KNOX-JEFFERSON-NW BLOUNT-
BLOUNT SMOKY MOUNTAINS-NORTH SEVIER-SEVIER SMOKY MOUNTAINS-
SEQUATCHIE-BLEDSOE-RHEA-MEIGS-MCMINN-NORTHWEST MONROE-
SOUTHEAST MONROE-MARION-HAMILTON-BRADLEY-WEST POLK-EAST POLK-LEE-
WISE-SCOTT-RUSSELL-WASHINGTON-
459 AM EST SUN FEB 15 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH
CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT...

WIND CHILL WARNING CONTINUES THIS MORNING FOR THE HIGHER ELEVATIONS
OF SOUTHWEST VIRGINIA AND EAST TENNESSEE. WIND CHILL ADVISORY
CONTINUES THIS MORNING FOR PORTIONS OF SOUTHWEST VIRGINIA AND
NORTHEAST TENNESSEE...THE CUMBERLAND PLATEAU AND SOUTHWEST NORTH
CAROLINA.

THE WINTER STORM WATCH HAS BEEN UPGRADED TO A WINTER STORM WARNING
FOR EAST CENTRAL AND NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA
FOR LATE TONIGHT THROUGH MONDAY NIGHT. A WINTER STORM WATCH FOR
LATE TONIGHT THROUGH MONDAY NIGHT REMAINS IN EFFECT FOR SOUTHEAST
TENNESSEE AND SOUTHWEST NORTH CAROLINA.

PLEASE REVIEW THE WARNING AND ADVISORY PRODUCTS ON OUR WEB PAGE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

A LOW PRESSURE SYSTEM WILL SPREAD SNOW ACROSS THE REGION MONDAY
AND MONDAY NIGHT. SNOW WILL ACCUMULATE ACROSS THE ENTIRE REGION.
WIDESPREAD 3 TO 8 INCHES OF SNOW IS POSSIBLE ACROSS VALLEY
AREAS...WITH SOME HIGHER AMOUNTS POSSIBLE. ADDITIONALLY...PERIODS
OF FREEZING RAIN WILL BE POSSIBLE ACROSS THE SOUTHERN VALLEY
MONDAY AFTERNOON. SNOW ACCUMULATIONS OF 6 TO 10 INCHES LOOK TO BE
POSSIBLE ACROSS THE HIGHER ELEVATIONS. SOME ADDITIONAL SNOWFALL
WILL BE POSSIBLE TUESDAY INTO WEDNESDAY...THOUGH ACCUMULATIONS ARE
EXPECTED TO GENERALLY BE LIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED BUT ANY SNOWFALL REPORTS WILL
BE APPRECIATED.

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 15, 5:25 AM ESTWinter Storm WarningMRXAnderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more47 hr

Nearby

Wind Chill Advisories in Tennessee, 2015Wind Chill Advisories in Virginia, 2015Every wind chill advisory 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.