Alert archive / Tennessee / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Morristown, TN

April 19, 2015Carter County, Johnson County, Sullivan County, Tennessee; Russell County, Washington County, City of Bristol, Virginia

NWS Morristown, TN issued this severe thunderstorm warning at Apr 19, 2015, 11:11 PM EDT for Carter County, Johnson County, Sullivan County, Tennessee; Russell County, Washington County, City of Bristol, Virginia. It was in force for 49 min. 2 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
Apr 19, 2015, 11:11 PM EDT (03:11 UTC)
Expired
Apr 20, 2015, 12:00 AM EDT
In force
49 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Carter County, TN, Johnson County, TN, Sullivan County, TN, City of Bristol, VA, Russell County, VA, Washington County, VA

The radar

The Knoxville radar (KMRX), 141 km from the middle of the area, began a volume at 03:11 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

TimeReportWhereRemark
Apr 19, 11:35 PM EDTTSTM WND DMGDamascus, VACOUPLE TREES DOWN.
Apr 19, 11:35 PM EDTTSTM WND DMGGlade Spring, VATREE DOWN.

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

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 3.2 hours before the alert went out and 204 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2015-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 83 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2015-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 269 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
83 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
465 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
269 m²/s²
0-3 km storm-relative helicity
271 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.

202 
WUUS54 KMRX 200311
SVRMRX
TNC019-091-163-VAC167-191-520-200400-
/O.NEW.KMRX.SV.W.0021.150420T0311Z-150420T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1111 PM EDT SUN APR 19 2015

THE NATIONAL WEATHER SERVICE IN MORRISTOWN  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN JOHNSON COUNTY IN EASTERN TENNESSEE...
  NORTHEASTERN CARTER COUNTY IN EASTERN TENNESSEE...
  CENTRAL SULLIVAN COUNTY IN EASTERN TENNESSEE...
  WASHINGTON COUNTY IN SOUTHWESTERN VIRGINIA...
  RUSSELL COUNTY IN SOUTHWESTERN VIRGINIA...
  THE CITY OF BRISTOL IN SOUTHWESTERN VIRGINIA...

* UNTIL 1200 AM EDT

* AT 1110 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 8 MILES WEST OF CLEVELAND TO 9 MILES NORTHWEST OF
  BRISTOL VA TO NEAR BRISTOL...MOVING NORTHEAST AT 55 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  ABINGDON...LEBANON...MOUNTAIN CITY...BRISTOL TN...BRISTOL VA...
  BRISTOL...CLEVELAND...WALNUT HILL...BLUFF CITY...GLADE SPRING...
  HONAKER...ST. PAUL...DAMASCUS...LINDELL...HANSONVILLE...LAUREL
  BLOOMERY...HOLSTON...CASTLEWOOD...COLLINGWOOD AND ROSEDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3659 8168 3653 8171 3647 8170 3641 8174
      3646 8235 3660 8234 3660 8230 3673 8234
      3689 8235 3689 8234 3691 8230 3697 8232
      3704 8217 3704 8208 3707 8202 3709 8187
      3696 8178 3693 8184 3679 8170 3664 8161
TIME...MOT...LOC 0310Z 245DEG 46KT 3696 8231 3673 8224 3649 8223 

HAIL...<.75IN
WIND...60MPH

$$

AMP.23
1 follow-up statement
422 
WWUS54 KMRX 200333
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1133 PM EDT SUN APR 19 2015

TNC019-200342-
/O.CAN.KMRX.SV.W.0021.000000T0000Z-150420T0400Z/
CARTER TN-
1133 PM EDT SUN APR 19 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CARTER COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3659 8168 3641 8174 3643 8199 3651 8199
      3644 8212 3646 8235 3660 8234 3660 8230
      3673 8234 3689 8235 3691 8230 3697 8232
      3704 8217 3704 8208 3709 8187 3696 8178
      3693 8184 3679 8170 3664 8162
TIME...MOT...LOC 0332Z 245DEG 47KT 3707 8201 3684 8192 3659 8184 

$$

TNC091-163-VAC167-191-520-200400-
/O.CON.KMRX.SV.W.0021.000000T0000Z-150420T0400Z/
JOHNSON TN-SULLIVAN TN-WASHINGTON VA-RUSSELL VA-CITY OF BRISTOL VA-
1133 PM EDT SUN APR 19 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1200 AM EDT
FOR NORTHERN JOHNSON...CENTRAL SULLIVAN...WASHINGTON...RUSSELL
COUNTIES AND THE CITY OF BRISTOL...

AT 1132 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 11 MILES NORTHEAST OF CLEVELAND TO 9 MILES NORTH OF
ABINGDON TO 8 MILES NORTH OF MOUNTAIN CITY...MOVING NORTHEAST AT 55
MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
ABINGDON...LEBANON...MOUNTAIN CITY...BRISTOL TN...BRISTOL VA...
BRISTOL...CLEVELAND...WALNUT HILL...BLUFF CITY...GLADE SPRING...
HONAKER...ST. PAUL...DAMASCUS...LINDELL...HANSONVILLE...LAUREL
BLOOMERY...HOLSTON...CASTLEWOOD...COLLINGWOOD AND ROSEDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3659 8168 3641 8174 3643 8199 3651 8199
      3644 8212 3646 8235 3660 8234 3660 8230
      3673 8234 3689 8235 3691 8230 3697 8232
      3704 8217 3704 8208 3709 8187 3696 8178
      3693 8184 3679 8170 3664 8162
TIME...MOT...LOC 0332Z 245DEG 47KT 3707 8201 3684 8192 3659 8184 

HAIL...<.75IN
WIND...60MPH

$$

17

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 8:00 PM EDTSpecial Weather StatementMRXBradley, McMinn, Meigs, Polk, Rhea, Roane45 min
Apr 19, 8:23 PM EDTSevere Thunderstorm WarningMRXLoudon, McMinn, Monroe37 min
Apr 19, 8:29 PM EDTSpecial Weather StatementMRXAnderson, Knox, Loudon, Roane46 min
Apr 19, 8:50 PM EDTSevere Thunderstorm WarningMRXAnderson, Blount, Knox, Sevier25 min
Apr 19, 9:03 PM EDTSevere Thunderstorm WarningMRXAnderson, Campbell, Claiborne, Knox, Union27 min
Apr 19, 9:15 PM EDTSevere Thunderstorm WarningMRXCocke, Grainger, Hamblen, Jefferson, Knox, Sevier and 1 more30 min
Apr 19, 9:29 PM EDTSevere Thunderstorm WarningMRXClaiborne, Grainger, Hamblen, Hancock, Hawkins, Union31 min
Apr 19, 9:41 PM EDTSevere Thunderstorm WarningMRXCocke, Grainger, Greene, Hamblen, Hawkins, Jefferson and 1 more34 min
Apr 19, 9:56 PM EDTSevere Thunderstorm WarningMRXGreene, Hamblen, Hancock, Hawkins34 min
Apr 19, 10:11 PM EDTSpecial Weather StatementMRXGreene, Unicoi49 min
Apr 19, 10:21 PM EDTSevere Thunderstorm WarningMRXGreene, Hancock, Hawkins, Sullivan, Unicoi, Washington24 min
Apr 19, 10:44 PM EDTSpecial Weather StatementMRXCarter, Johnson, Sullivan, Unicoi, Washington46 min
Apr 20, 3:44 AM EDTSevere Thunderstorm WarningMRXBledsoe, Hamilton, Marion, Sequatchie46 min
Apr 20, 4:29 AM EDTSpecial Weather StatementMRXBledsoe, Bradley, Hamilton, Meigs, Rhea46 min
Apr 20, 5:08 AM EDTSpecial Weather StatementMRXAnderson, Knox, Roane67 min
Apr 20, 5:11 AM EDTSpecial Weather StatementMRXCampbell49 min
Apr 20, 5:15 AM EDTSpecial Weather StatementMRXBradley, McMinn, Meigs, Monroe, Polk45 min
Apr 20, 5:50 AM EDTSpecial Weather StatementMRXBlount, Monroe, Sevier40 min
Apr 20, 5:58 AM EDTSpecial Weather StatementMRXGrainger, Hamblen47 min
Apr 20, 7:22 AM EDTRiver Flood WarningMRXCocke9 hr
Apr 19, 10:00 PM EDTSpecial Weather StatementMRXLee, Wise, City of Norton45 min
Apr 19, 10:30 PM EDTSevere Thunderstorm WarningMRXLee, Russell, Scott, Washington, Wise, City of Bristol and 1 more45 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2015Severe Thunderstorm Warnings in Virginia, 2015Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.