Alert archive / Virginia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 193, NWS Morristown, TN

July 5, 2012Johnson County, Sullivan County, Tennessee; 6 counties in Virginia

NWS Morristown, TN issued this severe thunderstorm warning at Jul 5, 2012, 2:11 PM EDT for Johnson County, Sullivan County, Tennessee; 6 counties in Virginia. It was in force for 64 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 5, 2012, 2:11 PM EDT (18:11 UTC)
Expired: Jul 5, 2012, 3:15 PM EDT
In force: 64 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties Johnson County, TN, Sullivan County, TN, City of Bristol, VA, City of Norton, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA

The radar

The Jackson,KY radar (KJKL), 130 km from the middle of the area, began a volume at 18:14 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.

What was reported inside it

Time	Report	Where	Remark
Jul 5, 2:40 PM EDT	TSTM WND DMG	5 Ene Honaker, VA	SEVERAL TREES DOWN.
Jul 5, 3:00 PM EDT	TSTM WND DMG	Abingdon, VA	SEVERAL TREES DOWN.
Jul 5, 3:25 PM EDT	TSTM WND DMG	11 Nw Abingdon, VA	ONE TREE DOWN ALONG HWY 19.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 29 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 5, 11:37 AM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.2 hours before the alert went out and 221 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: 1093 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1766 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

601 
WUUS54 KMRX 051811
SVRMRX
TNC091-163-VAC167-169-191-195-520-720-051915-
/O.NEW.KMRX.SV.W.0193.120705T1811Z-120705T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
211 PM EDT THU JUL 5 2012

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JOHNSON COUNTY IN EAST TENNESSEE...
  SULLIVAN COUNTY IN EAST TENNESSEE...
  RUSSELL COUNTY IN SOUTHWEST VIRGINIA...
  SCOTT COUNTY IN SOUTHWEST VIRGINIA...
  WASHINGTON COUNTY IN SOUTHWEST VIRGINIA...
  WISE COUNTY IN SOUTHWEST VIRGINIA...
  CITY OF BRISTOL IN SOUTHWEST VIRGINIA...
  CITY OF NORTON IN SOUTHWEST VIRGINIA...

* UNTIL 315 PM EDT

* AT 212 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM 33 MILES NORTH OF
  MCROBERTS TO 8 MILES EAST OF ASBERRYS...AND MOVING SOUTHWEST AT 35
  MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  LEBANON...ABINGDON...WISE...NORTON...MOUNTAIN CITY...BRISTOL VA...
  BRISTOL TN...CLEVELAND...BIG STONE GAP...DYE...HONAKER...
  ROSEDALE...GLADE SPRING...LINDELL...EMORY-MEADOW VIEW...POUND...
  KONNAROCK...ST. PAUL...HANSONVILLE AND CASTLEWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 3653 8170 3634 8172 3646 8197 3651 8199
      3648 8204 3683 8281 3689 8288 3698 8288
      3703 8275 3712 8273 3720 8257 3703 8247
      3696 8235 3705 8218 3706 8205 3713 8201
      3714 8190 3696 8177 3692 8183 3663 8160
TIME...MOT...LOC 1810Z 033DEG 24KT 3769 8281 3703 8139

$$

DH

1 follow-up statement

927 
WWUS54 KMRX 051832
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
232 PM EDT THU JUL 5 2012

TNC091-163-VAC167-169-191-195-520-720-051915-
/O.CON.KMRX.SV.W.0193.000000T0000Z-120705T1915Z/
SULLIVAN TN-JOHNSON TN-RUSSELL VA-SCOTT VA-WASHINGTON VA-WISE VA-
CITY OF NORTON VA-CITY OF BRISTOL VA-
232 PM EDT THU JUL 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR CITY OF BRISTOL...CITY OF NORTON...WISE...WASHINGTON...SCOTT...
RUSSELL...JOHNSON AND SULLIVAN COUNTIES...

AT 230 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 35 MILES NORTHWEST OF POUND
TO 18 MILES NORTHEAST OF GLADE SPRING...OR ALONG A LINE EXTENDING
FROM 28 MILES NORTHEAST OF HAZARD TO 6 MILES NORTH OF MARION...MOVING
SOUTHWEST AT 30 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  LEBANON...ABINGDON...WISE...NORTON...MOUNTAIN CITY...BRISTOL VA...
  BRISTOL TN...CLEVELAND...BIG STONE GAP...DYE...HONAKER...
  ROSEDALE...GLADE SPRING...LINDELL...EMORY-MEADOW VIEW...POUND...
  KONNAROCK...ST. PAUL...HANSONVILLE AND CASTLEWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
THURSDAY EVENING FOR CENTRAL TENNESSEE AND SOUTHWEST VIRGINIA.

&&

LAT...LON 3653 8170 3634 8172 3646 8197 3651 8199
      3648 8204 3683 8281 3689 8288 3698 8288
      3703 8275 3712 8273 3720 8257 3703 8247
      3696 8235 3705 8218 3706 8205 3713 8201
      3714 8190 3696 8177 3692 8183 3663 8160
TIME...MOT...LOC 1831Z 033DEG 24KT 3757 8291 3691 8148

$$

SR

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 Jul 5, 1:40 PM EDT, 31 minutes earlier.

Area forecast discussion, Jul 5, 1:40 PM EDT, 31 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE MORRISTOWN TN
140 PM EDT THU JUL 5 2012

.AVIATION...SCT CONVECTION TO OUR NORTH WILL MOVE INTO THE SOUTHERN
APPALACHIAN REGION THIS AFTERNOON.  COVERAGE AND TIMING REMAIN
IN QUESTION AND WILL CONTINUE VCTS WORDING IN TAFS.   WITH RECENT
RAINFALL AND CLEARING SKIES TONIGHT...COULD SEE PATCHY FOG DEVELOP
TOWARDS MORNING...MAINLY NEAR TRI FOR MVFR CONDITIONS TOWARDS
SUNRISE.  OTHERWISE...HIGH PRESSURE IN CONTROL FOR VFR CONDITIONS
AND LIGHT WINDS.

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...HEAT ADVISORY FROM 1 PM EDT /NOON CDT/ THIS AFTERNOON TO 9 PM
     EDT /8 PM CDT/ THIS EVENING FOR THE FOLLOWING ZONES:
     BLEDSOE...BRADLEY...HAMILTON...MARION...MCMINN...MEIGS...
     RHEA...SEQUATCHIE...WEST POLK.

VA...NONE.

&&

MJB

Hazardous weather outlook, Jul 5, 9:20 AM EDT, 4 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MORRISTOWN TN
920 AM EDT THU JUL 5 2012

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-061000-
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-
920 AM EDT (820 AM CDT) THU JUL 5 2012

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

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

A COMPLEX OF THUNDERSTORMS OVER THE OHIO RIVER VALLEY WILL MOVE
SOUTHWARD INTO THE SOUTHERN APPALACHIAN REGION THIS AFTERNOON AND
EVENING. THIS COMPLEX WILL HAVE THE POTENTIAL TO PRODUCE WIDESPREAD
DAMAGING WINDS...LOCALLY HEAVY RAINFALL...AND FREQUENT CLOUD TO
GROUND LIGHTNING.

A HEAT ADVISORY HAS BEEN POSTED FOR MOST OF SOUTHEAST TENNESSEE FOR
THIS AFTERNOON AND EVENING...WITH HEAT INDEX VALUES REACHING 100 TO
105 DEGREES DURING PEAK HEATING. TAKE IT EASY ON THOSE OUTDOOR
PROJECTS OR ACTIVITIES...AND FIND A SHADY SPOT AND DRINK PLENTY OF
WATER.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

ISOLATED STRONG TO SEVERE STORMS WILL BE POSSIBLE EACH AFTERNOON AND
EVENING THROUGH THE WEEKEND...WITH THUNDERSTORM COVERAGE INCREASING
SIGNIFICANTLY BY SUNDAY NIGHT INTO TUESDAY AS A COLD FRONT SAGS
SOUTHWARD INTO THE REGION. THE MAIN SEVERE THREATS EACH DAY WILL BE
STRONG DAMAGING WINDS...LOCALLY HEAVY RAINFALL...AND CLOUD TO GROUND
LIGHTNING.

HOT TEMPERATURES REMAIN IN THE FORECAST INTO THE WEEKEND...AND HEAT
INDICES MAY APPROACH OR EXCEED 105 DEGREES...ESPECIALLY ACROSS
SOUTHEAST TENNESSEE AGAIN ON FRIDAY. STAY TUNED...AND REMEMBER TO
PRACTICE SAFETY RULES IF YOU ARE OUT IN THE HEAT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING...AND
POSSIBLY AGAIN SOMETIME EARLY NEXT WEEK.

DMG

In the hours before

Local storm report, Jul 5, 10:09 AM EDT, 4 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1009 AM EDT THU JUL 05 2012

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

0350 PM     TSTM WND DMG     HILTONS                 36.65N 82.47W
07/04/2012                   SCOTT              VA   911 CALL CENTER

            FEW TREES DOWN ALONG AP CARTER HIGHWAY NEAR HILTONS.

&&

Special weather statement, Jul 5, 2:02 PM EDT, 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
202 PM EDT THU JUL 5 2012

TNZ098-051845-
MARION TN-
102 PM CDT THU JUL 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR MARION COUNTY UNTIL 145 PM CDT...

AT 100 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 8 MILES NORTH OF SOUTH PITTSBURG...OR 8 MILES
NORTHWEST OF JASPER...MOVING SOUTHEAST AT 5 MPH.

SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...JASPER...SOUTH
PITTSBURG...ORME AND MARTIN SPRINGS.

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.

MJB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 3:38 AM EDT	Heat Advisory	MRX	Bledsoe, Bradley, Hamilton, McMinn, Marion, Meigs and 3 more	17 hr
Jul 5, 2:16 PM EDT	Severe Thunderstorm Warning	MRX	Marion	44 min
Jul 5, 2:40 PM EDT	Areal Flood Advisory	MRX	Marion	2 hr
Jul 5, 2:50 PM EDT	Heat Advisory	MRX	Bledsoe, Bradley, Hamilton, McMinn, Marion, Meigs and 3 more	13 hr
Jul 5, 2:56 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Sullivan	64 min
Jul 5, 3:49 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Greene, Hancock, Hawkins, Sullivan, Unicoi and 1 more	56 min
Jul 5, 4:05 PM EDT	Areal Flood Advisory	MRX	Carter, Johnson, Sullivan, Washington	3 hr
Jul 5, 4:22 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Unicoi, Washington	53 min
Jul 5, 4:27 PM EDT	Severe Thunderstorm Warning	MRX	Hamblen, Hawkins	63 min
Jul 5, 4:37 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Grainger, Hancock, Union	53 min
Jul 5, 5:03 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Greene, Hamblen, Hawkins, Jefferson	57 min
Jul 5, 5:13 PM EDT	Severe Thunderstorm Warning	MRX	Morgan, Scott	62 min
Jul 5, 5:16 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Campbell, Claiborne, Grainger, Knox and 2 more	59 min
Jul 5, 5:46 PM EDT	Areal Flood Advisory	MRX	Campbell, Claiborne, Cocke, Grainger, Greene, Hamblen and 5 more	119 min
Jul 5, 5:51 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Loudon, Monroe, Morgan, Roane, Scott	54 min
Jul 5, 5:52 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton	23 min
Jul 5, 5:59 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Knox, Monroe, Sevier	46 min
Jul 5, 6:29 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Loudon, McMinn, Monroe, Polk	61 min
Jul 5, 6:40 PM EDT	Severe Thunderstorm Warning	MRX	Meigs, Rhea, Roane	65 min
Jul 5, 7:25 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	37 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2012 Severe Thunderstorm Warnings in Tennessee, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.