Alert archive / Tennessee / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 190, NWS Morristown, TN

October 14, 20146 counties in Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Oct 14, 2014, 8:22 AM EDT for 6 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: Oct 14, 2014, 8:22 AM EDT (12:22 UTC)
Expired: Oct 14, 2014, 8:50 AM EDT
In force: 28 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties Cocke County, TN, Grainger County, TN, Hamblen County, TN, Jefferson County, TN, Knox County, TN, Sevier County, TN

The radar

The Knoxville radar (KMRX), 15 km from the middle of the area, began a volume at 12:22 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.4 hours before the alert went out and 312 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: 24 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 644 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 381 m²/s²
0-3 km storm-relative helicity: 429 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 Oct 14, 7:26 AM EDT, 56 minutes earlier.

Area forecast discussion, Oct 14, 7:26 AM EDT, 56 minutes before

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Hazardous weather outlook, Oct 14, 3:50 AM EDT, 4 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
350 AM EDT TUE OCT 14 2014

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-150800-
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-
350 AM EDT TUE OCT 14 2014

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

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

A STRONG STORM SYSTEM WILL PUSH A COLD FRONT THROUGH OUR AREA TODAY
AND EARLY THIS EVENING. SHOWERS AND THUNDERSTORMS CAN BE EXPECTED
AHEAD OF THIS FRONT...AND SOME OF THESE STORMS MAY BECOME SEVERE.
DAMAGING WINDS WILL BE THE PRIMARY THREAT...ALTHOUGH AN ISOLATED
TORNADO CANNOT BE RULED OUT. HEAVY RAINFALL MAY LEAD TO FLOODING IN
SOME AREAS AS WELL TODAY INTO THIS EVENING.

IN ADDITION...STRONG WINDS CAN BE EXPECTED TODAY OVER SOME OF THE
HIGHER ELEVATIONS AND FOOTHILLS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY.

In the hours before

Special weather statement, Oct 14, 4:05 AM EDT, 4 hours 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
405 AM EDT TUE OCT 14 2014

TNZ083>085-099>101-140845-
RHEA-WEST POLK-BRADLEY-MCMINN-MEIGS-HAMILTON-
405 AM EDT TUE OCT 14 2014

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT RHEA...WEST POLK...
BRADLEY...MCMINN...MEIGS...HAMILTON...

AT 404 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR DECATUR TO 9 MILES SOUTHEAST OF HARRISON...AND
MOVING NORTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
CLEVELAND...ATHENS...DAYTON...DECATUR...BENTON...SODDY-DAISY...
ETOWAH...LAKESITE...CHARLESTON...RIDGESIDE...HARRISON...EAST
CLEVELAND...WILDWOOD LAKE...SOUTH CLEVELAND...COLLEGEDALE...
ENGLEWOOD...GRAYSVILLE...NIOTA...CALHOUN AND BIG SPRING.

HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 3499 8527 3558 8502 3554 8448 3545 8444
      3499 8463
TIME...MOT...LOC 0804Z 224DEG 24KT 3556 8487 3501 8506

MJB

Local storm report, Oct 14, 6:20 AM EDT, 2 hours 2 minutes before

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Local storm report, Oct 14, 6:50 AM EDT, 1 hour 32 minutes before

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Local storm report, Oct 14, 8:19 AM EDT, 3 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
Oct 14, 12:24 AM EDT	Severe Thunderstorm Warning	MRX	Hamilton, Marion, Sequatchie	51 min
Oct 14, 1:24 AM EDT	Special Weather Statement	MRX	Bledsoe, Hamilton, Marion, Meigs, Rhea, Sequatchie	51 min
Oct 14, 4:05 AM EDT	Special Weather Statement	MRX	Bradley, McMinn, Meigs	40 min
Oct 14, 4:55 AM EDT	Flash Flood Warning	MRX	Hamilton, Marion, Sequatchie	3 hr
Oct 14, 7:41 AM EDT	Areal Flood Warning	MRX	Hamilton	3 hr
Oct 14, 8:12 AM EDT	Areal Flood Advisory	MRX	Anderson, Blount, Grainger, Jefferson, Knox, Loudon and 2 more	3 hr
Oct 14, 8:49 AM EDT	Special Weather Statement	MRX	Grainger, Hamblen, Hancock, Hawkins	41 min
Oct 14, 9:19 AM EDT	Special Weather Statement	MRX	Bledsoe, Rhea	41 min
Oct 14, 10:34 AM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton, McMinn, Meigs, Rhea	116 min
Oct 14, 11:42 AM EDT	Areal Flood Advisory	MRX	Anderson, Campbell, Loudon, Morgan, Roane, Scott	2 hr
Oct 14, 1:29 PM EDT	Areal Flood Advisory	MRX	Anderson, Blount, Campbell, Claiborne, Grainger, Jefferson and 4 more	3 hr
Oct 14, 1:41 PM EDT	Areal Flood Advisory	MRX	Monroe, Polk	2 hr
Oct 14, 2:28 PM EDT	Special Weather Statement	MRX	Blount, Knox	47 min
Oct 14, 3:03 PM EDT	Special Weather Statement	MRX	Grainger, Hamblen, Jefferson	42 min
Oct 14, 3:22 PM EDT	Areal Flood Advisory	MRX	Blount, Claiborne, Cocke, Grainger, Greene, Hamblen and 4 more	3 hr
Oct 14, 4:23 PM EDT	Areal Flood Advisory	MRX	Blount, Claiborne, Grainger, Hancock, Jefferson, Knox and 2 more	112 min
Oct 14, 3:40 PM EDT	Areal Flood Advisory	MRX	Cherokee, Clay	3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2014 Every severe thunderstorm warning in 2014

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.