Alert archive / Tennessee / Wind Advisories in 2009

Wind Advisory 15, NWS Morristown, TN

November 11, 200913 counties in Tennessee; 7 counties in Virginia; Cherokee County, Clay County, North Carolina

NWS Morristown, TN issued this wind advisory at Nov 11, 2009, 2:53 AM EST for 13 counties in Tennessee; 7 counties in Virginia; Cherokee County, Clay County, North Carolina. It took effect at Nov 11, 2009, 4:00 AM EST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Nov 11, 2009, 2:53 AM EST (07:53 UTC)
In effect from
Nov 11, 2009, 4:00 AM EST
Expired
Nov 11, 2009, 9:07 PM EST
In force
17 hr
Issued by
NWS Morristown, TN
All 22 counties

Cherokee County, NC, Clay County, NC, Blount County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Greene County, TN, Johnson County, TN, Monroe County, TN, Morgan County, TN, Polk County, TN, Scott County, TN, Sevier County, TN, Unicoi 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), 17 km from the middle of the area, began a volume at 07:54 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 00:00Z, 7.9 hours before the alert went out and 297 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 00:00Z on 2009-11-11Temperature 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 00:00Z on 2009-11-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939587897Sfc1 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
575 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
426 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 10, 9:21 PM ESTRiver Flood WarningMRXSevier19 hr
Nov 10, 9:41 PM ESTAreal Flood AdvisoryMRXCarter, Greene, Johnson, Sullivan, Unicoi, Washington6 hr
Nov 11, 12:41 AM ESTAreal Flood AdvisoryMRXBlount, Bradley, Loudon, McMinn, Meigs, Monroe and 2 more3 hr
Nov 11, 2:29 AM ESTAreal Flood AdvisoryMRXHawkins3 hr
Nov 11, 3:55 AM ESTAreal Flood AdvisoryMRXBlount, Carter, Cocke, Greene, Hamblen, Jefferson and 5 more3 hr
Nov 11, 9:18 AM ESTRiver Flood WarningMRXCocke, Jefferson22 hr
Nov 10, 8:17 PM ESTAreal Flood AdvisoryMRXRussell, Scott, Washington, City of Bristol6 hr
Nov 11, 3:42 AM ESTAreal Flood AdvisoryMRXCherokee, Clay3 hr

Nearby

Wind Advisories in Tennessee, 2009Wind Advisories in Virginia, 2009Wind Advisories in North Carolina, 2009Every wind advisory in 2009

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.