Alert archive / Tennessee / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 30, NWS Morristown, TN

April 26, 20155 counties in Tennessee; Scott County, Virginia

NWS Morristown, TN issued this severe thunderstorm warning at Apr 26, 2015, 12:16 AM EDT for 5 counties in Tennessee; Scott County, Virginia. It was in force for 45 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: Apr 26, 2015, 12:16 AM EDT (04:16 UTC)
Expired: Apr 26, 2015, 1:01 AM EDT
In force: 45 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Greene County, TN, Hancock County, TN, Hawkins County, TN, Sullivan County, TN, Washington County, TN, Scott County, VA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 25, 9:45 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 4.3 hours before the alert went out and 257 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 519 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 444 m²/s²
0-3 km storm-relative helicity: 493 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Apr 25, 7:27 PM EDT, 4 hours 49 minutes earlier.

Area forecast discussion, Apr 25, 7:27 PM EDT, 4 hours 49 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
727 PM EDT SAT APR 25 2015

.AVIATION...
FOR THE 00Z TAFS...SEVERE THUNDERSTORMS ARE PRESENT ACROSS KENTUCKY
EARLY THIS EVENING. COULD SEE SOME ISOLATED STORMS FORM EARLY THIS
EVENING NEAR KTRI AHEAD OF MAIN GROUP OF STORMS. EXPECT THESE
STORMS TO CONGEAL INTO A LINE OF STORMS AND MOVE THROUGH THE AREA
OVERNIGHT. LIKELY TO THUNDERSTORMS AT KTRI/KTYS FOR A COUPLE OF
HOURS NEAR MIDNIGHT. LINE OF STORMS WILL BE CAPABLE OF DAMAGING
WINDS AND LARGE HAIL. CONDITIONS WILL IMPROVE BEHIND THE LINE OF
STORMS.

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.
&&

ABM

Hazardous weather outlook, Apr 25, 1:27 PM EDT, 10 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MORRISTOWN TN
127 PM EDT SAT APR 25 2015

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-261730-
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-
127 PM EDT SAT APR 25 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

A RISK FOR SEVERE THUNDERSTORMS EXISTS FROM THE MID TO LATE
AFTERNOON AND EARLY EVENING...AND AGAIN FROM THE LATE EVENING AND
OVERNIGHT HOURS ACROSS THE TENNESSEE VALLEY AND SOUTHERN
APPALACHIAN REGION ALONG AND AHEAD OF A COLD FRONT.

THERE IS SOME UNCERTAINTY REGARDING STORM COVERAGE...PARTICULARLY
WITH RESPECT TO THE AFTERNOON AND EARLY EVENING ACTIVITY.
HOWEVER...SHOULD A THUNDERSTORM DEVELOP...THE ENVIRONMENT IN PLACE
WOULD ALLOW IT TO QUICKLY BECOME SEVERE. DAMAGING WINDS UP TO 70
MPH...AND LARGE HAIL OF GOLFBALL SIZE WILL BE THE PRIMARY IMPACTS
WITH THIS ACTIVITY. HOWEVER...AN ISOLATED TORNADO OR TWO CANNOT BE
RULED OUT. ADDITIONALLY...HEAVY RAINS FROM THIS ACTIVITY MAY ALSO
CAUSE LOCALIZED FLASH FLOODING PROBLEMS.

PLEASE MONITOR THE LATEST FORECAST INFORMATION REGARDING THE SEVERE
WEATHER POTENTIAL FROM THE NATIONAL WEATHER SERVICE...PARTICULARLY
IF YOU HAVE OUTDOOR PLANS THIS AFTERNOON AND EVENING. HAVE A WAY
TO RECEIVE ANY WATCH AND WARNING INFORMATION AND KNOW WHAT ACTIONS
TO TAKE SHOULD A WARNING BE ISSUED FOR YOUR AREA.

HAZARDOUS WEATHER IS POSSIBLE AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS EXPECTED THIS AFTERNOON AND EVENING IN
SUPPORT OF SEVERE WEATHER OPERATIONS.

In the hours before

Special weather statement, Apr 25, 11:12 PM EDT, 1 hour 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1112 PM EDT SAT APR 25 2015

TNZ067-082>084-260400-
RHEA TN-ROANE TN-BLEDSOE TN-MEIGS TN-
1112 PM EDT SAT APR 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR RHEA...ROANE...BLEDSOE...AND
MEIGS COUNTIES UNTIL 1200 AM EDT/1100 PM CDT/...

AT 1112 PM EDT /1012 PM CDT/...DOPPLER RADAR WAS TRACKING A STRONG
THUNDERSTORM 12 MILES NORTHWEST OF PIKEVILLE...MOVING EAST AT 45 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
ROCKWOOD...SPRING CITY...MIDTOWN...PEAKLAND...GRANDVIEW...MOUNT
CREST...MELVINE...EAGLE FURNACE AND TEN MILE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM EDT/100 AM
CDT/ FOR EAST TENNESSEE.

LAT...LON 3572 8526 3576 8526 3577 8510 3577 8504
      3575 8503 3577 8494 3576 8492 3583 8480
      3583 8477 3586 8473 3587 8459 3564 8459
      3564 8462 3560 8466 3565 8534
TIME...MOT...LOC 0312Z 269DEG 40KT 3575 8533

DH

Special weather statement, Apr 25, 11:47 PM EDT, 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1147 PM EDT SAT APR 25 2015

VAZ006-008-260430-
RUSSELL VA-WASHINGTON VA-
1147 PM EDT SAT APR 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR RUSSELL...AND WASHINGTON COUNTIES
UNTIL 1230 AM EDT...

AT 1147 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR CLEVELAND...OR 8 MILES NORTH OF LEBANON...MOVING EAST AT 30 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LEBANON...CLEVELAND...GLADE SPRING...HONAKER...DYE...ROSEDALE AND
EMORY-MEADOW VIEW.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM EDT FOR
SOUTHWESTERN VIRGINIA.

LAT...LON 3694 8223 3702 8221 3704 8217 3704 8212
      3705 8211 3704 8208 3705 8204 3707 8202
      3709 8202 3706 8183 3696 8178 3695 8182
      3679 8170 3671 8166
TIME...MOT...LOC 0347Z 286DEG 26KT 3701 8212

MOULTON

Local storm report, Apr 25, 11:59 PM EDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1159 PM EDT SAT APR 25 2015

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

1145 PM     TSTM WND DMG     EWING                   36.63N 83.43W
04/25/2015                   LEE                VA   911 CALL CENTER

            FEW TREES DOWN.

&&

Special weather statement, Apr 25, 11:59 PM EDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1159 PM EDT SAT APR 25 2015

VAZ002-005-006-008-260445-
SCOTT VA-RUSSELL VA-WISE VA-WASHINGTON VA-
1159 PM EDT SAT APR 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR SCOTT...RUSSELL...WISE...AND
WASHINGTON COUNTIES UNTIL 1245 AM EDT...

AT 1158 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR NORTON...MOVING EAST AT 35 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NORTON...LEBANON...WISE...CLEVELAND...COEBURN...ST. PAUL...
DUNGANNON...HOLSTON...CASTLEWOOD AND HANSONVILLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM EDT FOR
SOUTHWESTERN VIRGINIA.

LAT...LON 3670 8203 3685 8269 3702 8267 3702 8245
      3698 8237 3696 8236 3700 8229 3700 8227
      3699 8226 3701 8222 3701 8199
TIME...MOT...LOC 0358Z 274DEG 29KT 3692 8257

MOULTON

Local storm report, Apr 26, 12:07 AM EDT, 9 minutes before

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Special weather statement, Apr 26, 12:10 AM EDT, 6 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
Apr 25, 10:38 PM EDT	Special Weather Statement	MRX	Campbell, Claiborne, Morgan, Scott	67 min
Apr 25, 11:10 PM EDT	Special Weather Statement	MRX	Anderson, Claiborne, Grainger, Hancock, Hawkins, Knox and 1 more	65 min
Apr 25, 11:12 PM EDT	Special Weather Statement	MRX	Rhea	48 min
Apr 25, 11:22 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Morgan, Roane	53 min
Apr 25, 11:27 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock, Hawkins	63 min
Apr 26, 12:06 AM EDT	Severe Thunderstorm Warning	MRX	Blount, Cocke, Grainger, Jefferson, Knox, Sevier and 1 more	54 min
Apr 26, 12:47 AM EDT	Special Weather Statement	MRX	McMinn, Monroe	58 min
Apr 26, 12:59 AM EDT	Special Weather Statement	MRX	Blount, Sevier	46 min
Apr 26, 1:36 AM EDT	Special Weather Statement	MRX	McMinn, Meigs, Monroe, Polk	54 min
Apr 25, 8:11 PM EDT	Special Weather Statement	MRX	Wise	49 min
Apr 25, 8:49 PM EDT	Special Weather Statement	MRX	Russell	26 min
Apr 25, 8:57 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Washington	48 min
Apr 25, 9:33 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Washington	24 min
Apr 25, 9:42 PM EDT	Special Weather Statement	MRX	Wise	63 min
Apr 25, 10:44 PM EDT	Special Weather Statement	MRX	Wise, City of Norton	46 min
Apr 25, 10:50 PM EDT	Special Weather Statement	MRX	Russell	40 min
Apr 25, 11:12 PM EDT	Severe Thunderstorm Warning	MRX	Scott, Wise, City of Norton	48 min
Apr 25, 11:31 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Washington	29 min
Apr 25, 11:47 PM EDT	Special Weather Statement	MRX	Russell	43 min
Apr 25, 11:59 PM EDT	Special Weather Statement	MRX	Russell, Wise, City of Norton	46 min
Apr 26, 12:10 AM EDT	Special Weather Statement	MRX	Lee, Scott, City of Norton	35 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2015 Severe Thunderstorm Warnings in Virginia, 2015 Every severe thunderstorm warning in 2015

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.