Alert archive / Tennessee / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 125, NWS Morristown, TN

June 10, 2008Sullivan County, Tennessee; Washington County, Virginia

NWS Morristown, TN issued this severe thunderstorm warning at Jun 10, 2008, 6:42 PM EDT for Sullivan County, Tennessee; Washington County, Virginia. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 10, 2008, 6:42 PM EDT (22:42 UTC)
Expired
Jun 10, 2008, 7:15 PM EDT
In force
33 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon

Counties Sullivan County, TN, Washington County, VA

The radar

The Knoxville radar (KMRX), 124 km from the middle of the area, began a volume at 22:44 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, 10.7 hours before the alert went out and 209 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 2008-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 556 joules per kilogram.LCLLFCEL10008507005003002001001 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 2008-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.1939Sfc1 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
556 J/kg
Mixed-layer CIN
-190 J/kg
Mixed-layer LCL
1718 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
8 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 severe thunderstorm 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 severe thunderstorm warning went out at Jun 10, 3:20 PM EDT, 3 hours 22 minutes earlier.

Area forecast discussion, Jun 10, 3:20 PM EDT, 3 hours 22 minutes before
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Hazardous weather outlook, Jun 10, 5:00 AM EDT, 13 hours 42 minutes before
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In the hours before

Local storm report, Jun 10, 3:06 PM EDT, 3 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
306 PM EDT TUE JUN 10 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0500 PM     TSTM WND DMG     5 SSW GREENEVILLE       36.10N 82.85W
06/09/2008                   GREENE             TN   LAW ENFORCEMENT

            TREES AND POWER LINES DOWN.

&&
Local storm report, Jun 10, 3:11 PM EDT, 3 hours 31 minutes before
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Special weather statement, Jun 10, 5:42 PM EDT, 1 hour before
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Special weather statement, Jun 10, 5:53 PM EDT, 49 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 9:43 PM EDTSevere Thunderstorm WarningMRXBledsoe, Rhea32 min
Jun 10, 12:08 AM EDTSevere Thunderstorm WarningMRXLoudon, McMinn, Monroe, Roane37 min
Jun 10, 12:18 AM EDTSevere Thunderstorm WarningMRXMorgan27 min
Jun 10, 12:41 AM EDTSevere Thunderstorm WarningMRXBradley, McMinn, Polk34 min
Jun 10, 12:55 AM EDTSevere Thunderstorm WarningMRXAnderson, Campbell35 min
Jun 10, 1:17 AM EDTSevere Thunderstorm WarningMRXLoudon, McMinn, Meigs, Monroe28 min
Jun 10, 2:37 AM EDTAreal Flood AdvisoryMRXAnderson, Bledsoe, Loudon, Morgan, Rhea, Roane3 hr
Jun 10, 7:14 PM EDTSevere Thunderstorm WarningMRXCarter, Johnson, Sullivan, Washington61 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2008Severe Thunderstorm Warnings in Virginia, 2008Every severe thunderstorm warning in 2008

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.