Alert archive / Tennessee / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 124, NWS Morristown, TN

June 10, 20084 counties in Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 10, 2008, 1:17 AM EDT for 4 counties in Tennessee. It was in force for 28 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, 1:17 AM EDT (05:17 UTC)
Expired: Jun 10, 2008, 1:45 AM EDT
In force: 28 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties Loudon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN

The radar

The Knoxville radar (KMRX), 122 km from the middle of the area, began a volume at 05:17 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

Nashville Metro, TN (KBNA), launched 00:00Z, 5.3 hours before the alert went out and 201 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: 1952 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1546 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

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 9, 9:15 PM EDT, 4 hours 2 minutes earlier.

Area forecast discussion, Jun 9, 9:15 PM EDT, 4 hours 2 minutes before

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Hazardous weather outlook, Jun 9, 5:00 AM EDT, 20 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
500 AM EDT MON JUN 9 2008

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-101000-
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-
500 AM EDT (400 AM CDT) MON JUN 9 2008

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

.DAY ONE...TODAY AND TONIGHT

ISOLATED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON AND EVENING. A FEW STORMS COULD BECOME SEVERE...PRODUCING
DAMAGING WINDS...LARGE HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...
AND LOCALLY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A STAGNANT WEATHER PATTERN WILL CONTINUE ACROSS THE SOUTHERN
APPALACHIAN REGION THROUGH THE WEEK...WITH SCATTERED AFTERNOON AND
EVENING THUNDERSTORMS POSSIBLE EACH DAY. SOME STORMS COULD BECOME
SEVERE EACH DAY...PRODUCING DAMAGING WINDS...LARGE HAIL...FREQUENT
CLOUD TO GROUND LIGHTNING...AND LOCALLY HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE ISOLATED NATURE OF
THE EXPECTED SEVERE WEATHER.

DMG

In the hours before

Special weather statement, Jun 9, 11:12 PM EDT, 2 hours 5 minutes before

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Special weather statement, Jun 9, 11:30 PM EDT, 1 hour 47 minutes before

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Special weather statement, Jun 9, 11:42 PM EDT, 1 hour 35 minutes before

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Local storm report, Jun 10, 12:44 AM EDT, 33 minutes before

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Local storm report, Jun 10, 12:57 AM EDT, 20 minutes before

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Local storm report, Jun 10, 1:12 AM EDT, 5 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 9, 9:43 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Rhea	32 min
Jun 10, 12:08 AM EDT	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Monroe, Roane	37 min
Jun 10, 12:18 AM EDT	Severe Thunderstorm Warning	MRX	Morgan	27 min
Jun 10, 12:41 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, McMinn, Polk	34 min
Jun 10, 12:55 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell	35 min
Jun 10, 2:37 AM EDT	Areal Flood Advisory	MRX	Anderson, Bledsoe, Loudon, Morgan, Rhea, Roane	3 hr
Jun 10, 6:42 PM EDT	Severe Thunderstorm Warning	MRX	Sullivan	33 min
Jun 10, 7:14 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Sullivan, Washington	61 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.