Alert archive / Tennessee / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 127, NWS Morristown, TN

June 10, 2008Carter County, Johnson County, Unicoi County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 10, 2008, 8:13 PM EDT for Carter County, Johnson County, Unicoi County, Tennessee. It was in force for 47 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, 8:13 PM EDT (00:13 UTC)
Expired: Jun 10, 2008, 9:00 PM EDT
In force: 47 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties Carter County, TN, Johnson County, TN, Unicoi County, TN

The radar

The Knoxville radar (KMRX), 114 km from the middle of the area, began a volume at 00:15 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

Roanoke, VA (KRNK), launched 00:00Z, 0.2 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-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: 681 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1517 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 60 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, 4 hours 53 minutes earlier.

Area forecast discussion, Jun 10, 3:20 PM EDT, 4 hours 53 minutes before

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Hazardous weather outlook, Jun 10, 5:00 AM EDT, 15 hours 13 minutes before

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In the hours before

Local storm report, Jun 10, 3:06 PM EDT, 5 hours 7 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, 5 hours 2 minutes before

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Special weather statement, Jun 10, 5:42 PM EDT, 2 hours 31 minutes before

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Special weather statement, Jun 10, 5:53 PM EDT, 2 hours 20 minutes before

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Local storm report, Jun 10, 7:11 PM EDT, 1 hour 2 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
Jun 10, 8:23 PM EDT	Areal Flood Advisory	MRX	Bradley	2 hr
Jun 11, 2:17 PM EDT	Areal Flood Advisory	MRX	Polk	58 min
Jun 11, 3:23 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Greene	37 min
Jun 11, 3:30 PM EDT	Areal Flood Advisory	MRX	Monroe	2 hr
Jun 11, 3:44 PM EDT	Severe Thunderstorm Warning	MRX	Loudon, Monroe	61 min
Jun 11, 3:48 PM EDT	Areal Flood Advisory	MRX	Cocke, Sevier	117 min
Jun 11, 3:57 PM EDT	Severe Thunderstorm Warning	MRX	Jefferson, Sevier	30 min
Jun 11, 4:17 PM EDT	Severe Thunderstorm Warning	MRX	Blount	28 min
Jun 11, 4:18 PM EDT	Severe Thunderstorm Warning	MRX	Sullivan	32 min
Jun 11, 4:22 PM EDT	Severe Thunderstorm Warning	MRX	Greene	53 min
Jun 11, 4:46 PM EDT	Severe Thunderstorm Warning	MRX	Sevier	29 min
Jun 11, 4:49 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Knox	41 min
Jun 11, 4:57 PM EDT	Severe Thunderstorm Warning	MRX	Anderson	48 min
Jun 11, 5:00 PM EDT	Severe Thunderstorm Warning	MRX	Hawkins	45 min
Jun 11, 5:47 PM EDT	Severe Thunderstorm Warning	MRX	Grainger, Jefferson, Knox	43 min
Jun 11, 6:17 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock, Hawkins	28 min
Jun 11, 6:30 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger	30 min
Jun 11, 6:52 PM EDT	Severe Thunderstorm Warning	MRX	Scott, Wise	23 min
Jun 11, 7:24 PM EDT	Severe Thunderstorm Warning	MRX	Scott	16 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2008 Every 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.