Alert archive / Tennessee / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 149, NWS Morristown, TN

July 28, 2014Polk County, Tennessee; Cherokee County, North Carolina

NWS Morristown, TN issued this severe thunderstorm warning at Jul 28, 2014, 1:36 AM EDT for Polk County, Tennessee; Cherokee County, North Carolina. It was in force for 39 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
Jul 28, 2014, 1:36 AM EDT (05:36 UTC)
Expired
Jul 28, 2014, 2:15 AM EDT
In force
39 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon

Counties Cherokee County, NC, Polk County, TN

The radar

The Knoxville radar (KMRX), 141 km from the middle of the area, began a volume at 05:36 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 00:00Z, 5.6 hours before the alert went out and 196 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, Peachtre/Fal Fld, GA at 00:00Z on 2014-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1018 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2014-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.1939Sfc1 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
1018 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
1522 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
124 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 Jul 27, 8:45 PM EDT, 4 hours 51 minutes earlier.

Area forecast discussion, Jul 27, 8:45 PM EDT, 4 hours 51 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
845 PM EDT SUN JUL 27 2014

.DISCUSSION...SUPERCELL THUNDERSTORMS DEVELOPED OVER EASTERN
KENTUCKY AND MOVED INTO SOUTHWEST VIRGINIA AND NORTHERN TENNESSEE
LATE THIS AFTERNOON AND EVENING WITH LARGE HAIL AND ROTATING
STORMS. MORE ACTIVITY IS DEVELOPING OVER EASTERN KY AT THIS HOUR
AND MOVING BACK INTO NORTHERN TENNESSEE AND SOUTHWEST VIRGINIA.
MORE SEVERE STORMS POSSIBLE NEXT FEW HOURS SO UPDATED FOR NEW
WATCH. CONVECTIVE ACTIVITY SHOULD DECREASE AFTER MIDNIGHT.

&&

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

TD
Hazardous weather outlook, Jul 27, 5:00 AM EDT, 20 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
500 AM EDT SUN JUL 27 2014

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005-
006-008-281000-
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 SUN JUL 27 2014

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

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

A STRONG COLD FRONT...ALONG WITH ITS ASSOCIATED STRONG WIND FIELD...
WILL APPROACH THE SOUTHERN APPALACHIAN REGION TODAY...TRIGGERING
NUMEROUS STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING.
THESE STORMS WILL HAVE THE POTENTIAL FOR WIDESPREAD DAMAGING
WINDS...VERY LARGE HAIL UP TO GOLFBALL SIZE...AND LOCALLY HEAVY
RAINFALL. IN ADDITION...AN ISOLATED TORNADO OR TWO WILL BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING.

DMG

In the hours before

Local storm report, Jul 27, 10:50 PM EDT, 2 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1050 PM EDT SUN JUL 27 2014

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

0915 PM     TSTM WND DMG     KNOXVILLE               35.97N 83.95W
07/27/2014                   KNOX               TN   PUBLIC

            TREES DOWN AND A CARPORT DAMAGED ON FORD PIKE NEAR THE
            TENNESSEE RIVER AND UNIVERSITY HEIGHT APARTMENTS.

&&
Local storm report, Jul 27, 10:52 PM EDT, 2 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MORRISTOWN TN
1052 PM EDT SUN JUL 27 2014

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

0341 PM     HAIL             WINFIELD                36.56N 84.45W
07/27/2014  E2.75 INCH       SCOTT              TN   PUBLIC

0341 PM     HAIL             WINFIELD                36.56N 84.45W
07/27/2014  E1.75 INCH       SCOTT              TN   PUBLIC

0400 PM     HAIL             4 SW JELLICO            36.54N 84.18W
07/27/2014  E1.75 INCH       CAMPBELL           TN   911 CALL CENTER

0454 PM     HAIL             PENNINGTON GAP          36.76N 83.03W
07/27/2014  E1.75 INCH       LEE                VA   911 CALL CENTER

0500 PM     HAIL             PENNINGTON GAP          36.76N 83.03W
07/27/2014  E2.50 INCH       LEE                VA   PUBLIC

0500 PM     HAIL             DRYDEN                  36.78N 82.94W
07/27/2014  E1.75 INCH       LEE                VA   PUBLIC

0503 PM     HAIL             DRYDEN                  36.78N 82.94W
07/27/2014  E2.00 INCH       LEE                VA   PUBLIC

0510 PM     HAIL             PENNINGTON GAP          36.76N 83.03W
07/27/2014  E1.75 INCH       LEE                VA   EMERGENCY MNGR

            2 POLICE CARS DESTROYED BY DAMAGE FROM GOLF BALL SIZE OR
            LARGER HAIL. LOTS OF DEBRIS ON ROADWAYS.

0512 PM     HAIL             DUFFIELD                36.72N 82.80W
07/27/2014  E2.75 INCH       SCOTT              VA   911 CALL CENTER

0512 PM     TSTM WND DMG     DUFFIELD                36.72N 82.80W
07/27/2014                   SCOTT              VA   911 CALL CENTER

            SEVERAL TREES DOWN

0535 PM     TORNADO          CHURCH HILL             36.53N 82.71W
07/27/2014                   HAWKINS            TN   EMERGENCY MNGR

            REPORTS OF A POSSIBLE TORNADO TOUCHDOWN IN THE CHURCH
            HILL AND CARTER VALLEY AREA. NUMEROUS TREES AND
            POWERLINES DOWN WITH MODERATE DAMAGE TO SOME HOMES.

0535 PM     TSTM WND DMG     CHURCH HILL             36.53N 82.71W
07/27/2014                   HAWKINS            TN   BROADCAST MEDIA

            SEVERAL TRESS AND POWERLINES DOWN

0538 PM     HAIL             3 W KINGSPORT           36.53N 82.61W
07/27/2014  E1.75 INCH       SULLIVAN           TN   TRAINED SPOTTER

0540 PM     TSTM WND DMG     KINGSPORT               36.53N 82.56W
07/27/2014                   SULLIVAN           TN   AMATEUR RADIO

            SEVERAL TREES DOWN

0542 PM     HAIL             KINGSPORT               36.53N 82.56W
07/27/2014  E2.75 INCH       SULLIVAN           TN   AMATEUR RADIO

0545 PM     TORNADO          COLONIAL HEIGHTS        36.48N 82.51W
07/27/2014                   SULLIVAN           TN   PUBLIC

            POSSIBLE TORNADO DAMAGE FROM ROUGHLY EXIT 56 ON I-81 TO
            EXIT 10 ON I-26. SEVERAL DAMAGED OR DESTROYED HOMES AND
            OTHER STRUCTURES. LARGE TREES DOWN THROUGHOUT THIS AREA.

0553 PM     HAIL             GRAY                    36.41N 82.48W
07/27/2014  E1.75 INCH       WASHINGTON         TN   AMATEUR RADIO

0554 PM     TORNADO          GRAY                    36.41N 82.48W
07/27/2014                   WASHINGTON         TN   911 CALL CENTER

            POSSIBLE TORNADO DAMAGE NEAR GRAY. NUMEROUS TREES AND
            POWERLINES DOWN ALONG WITH DAMAGE TO SEVERAL HOMES.

0605 PM     TORNADO          7 SE CLAIRFIELD         36.48N 83.86W
07/27/2014                   CLAIBORNE          TN   EMERGENCY MNGR

            10 HOMES COMPLETELY DESTROYED IN SPEEDWELL ALONG OLD HWY
            63. REPORTED BY EMERGENCY MANAGER.

0715 PM     TSTM WND DMG     MAYNARDVILLE            36.25N 83.81W
07/27/2014                   UNION              TN   911 CALL CENTER

            TWO TREES DOWN - 1 IN MAYNARDVILLE AND 1 IN CORRYTON.

0720 PM     HAIL             NORRIS                  36.21N 84.06W
07/27/2014  E1.00 INCH       ANDERSON           TN   PUBLIC

0740 PM     TSTM WND DMG     KNOXVILLE               35.97N 83.95W
07/27/2014                   KNOX               TN   911 CALL CENTER

            NUMEROUS TREES DOWN AS THE STORMS PASSED THROUGH
            KNOXVILLE.

0745 PM     TSTM WND DMG     2 NE NORRIS             36.23N 84.04W
07/27/2014                   ANDERSON           TN   911 CALL CENTER

            2 TREES DOWN ON INDIAN GAP RD IN ANDERSONVILLE.

0800 PM     TSTM WND DMG     5 S JEFFERSON CITY      36.05N 83.49W
07/27/2014                   JEFFERSON          TN   911 CALL CENTER

            TREES DOWN ACROSS SOUTHERN END OF JEFFERSON COUNTY.

0800 PM     TSTM WND DMG     ALCOA                   35.79N 83.98W
07/27/2014                   BLOUNT             TN   911 CALL CENTER

            TREES DOWN IN THE TOPSIDE RD AREA JUST NW OF THE AIRPORT.

0815 PM     FUNNEL CLOUD     8 W FARRAGUT            35.87N 84.33W
07/27/2014                   LOUDON             TN   TRAINED SPOTTER

            FUNNEL CLOUD REPORTED NEAR MELTON HILL DAM.

0834 PM     HAIL             ALCOA                   35.79N 83.98W
07/27/2014  E1.00 INCH       BLOUNT             TN   AMATEUR RADIO

            QUARTER SIZE HAIL ON CUSICK RD.

0842 PM     HAIL             KARNS                   35.98N 84.12W
07/27/2014  E1.00 INCH       KNOX               TN   AMATEUR RADIO

            QUARTER SIZED HAIL 1 MILE EAST OF SHAAD RD.

0844 PM     TSTM WND DMG     TOWNSEND                35.68N 83.75W
07/27/2014                   BLOUNT             TN   911 CALL CENTER

            TREES DOWN ON HWY 321 BETWEEN WALLAND AND TOWNSEND.

0850 PM     TSTM WND DMG     KNOXVILLE               35.97N 83.95W
07/27/2014                   KNOX               TN   PUBLIC

            LARGE TREE FELL ON A BUS STOP SHELTER NEAR THE UNIVERSITY
            HEIGHTS APARTMENTS...1319 KNOTTY PINE WAY. THE BUS STOP
            SHELTER WAS COMPLETELY DESTROYED.

0853 PM     TSTM WND DMG     SEVIERVILLE             35.89N 83.58W
07/27/2014                   SEVIER             TN   911 CALL CENTER

            TREES DOWN ON BOYDS CREEK RD AND EAST PARK LANE.

0912 PM     HAIL             KNOXVILLE               35.97N 83.95W
07/27/2014  E1.00 INCH       KNOX               TN   AMATEUR RADIO

            QUARTER SIZED HAIL ON ALCOA HWY ABOUT 1/2 MILE FROM UT
            MEDICAL CENTER.

0915 PM     TSTM WND DMG     KNOXVILLE               35.97N 83.95W
07/27/2014                   KNOX               TN   PUBLIC

            TREES DOWN AND A CARPORT DAMAGED ON FORD PIKE NEAR THE
            TENNESSEE RIVER AND UNIVERSITY HEIGHT APARTMENTS.

0933 PM     HAIL             SEYMOUR                 35.87N 83.77W
07/27/2014  E1.00 INCH       SEVIER             TN   AMATEUR RADIO

            QUARTER SIZED HAIL REPORTED BY SPOTTER AND AMATEUR RADIO.

&&
Local storm report, Jul 28, 12:39 AM EDT, 57 minutes before
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Special weather statement, Jul 28, 12:44 AM EDT, 52 minutes before
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Special weather statement, Jul 28, 12:48 AM EDT, 48 minutes before
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Special weather statement, Jul 28, 1:33 AM EDT, 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 8:11 PM EDTTornado WarningMRXBlount, Knox, Sevier64 min
Jul 27, 8:42 PM EDTAreal Flood AdvisoryMRXBlount, Cocke, Jefferson, Knox, Sevier3 hr
Jul 27, 8:53 PM EDTSevere Thunderstorm WarningMRXAnderson, Blount, Knox, Sevier52 min
Jul 27, 9:38 PM EDTSevere Thunderstorm WarningMRXBlount, Cocke, Sevier38 min
Jul 27, 10:06 PM EDTSevere Thunderstorm WarningMRXAnderson, Campbell, Claiborne, Grainger, Hancock, Union54 min
Jul 27, 10:32 PM EDTSevere Thunderstorm WarningMRXAnderson, Campbell, Scott43 min
Jul 27, 10:55 PM EDTAreal Flood AdvisoryMRXCampbell, Claiborne, Hancock, Hawkins, Morgan, Scott and 1 more3 hr
Jul 27, 10:55 PM EDTSevere Thunderstorm WarningMRXCampbell, Claiborne, Grainger, Hamblen, Hancock, Hawkins and 1 more50 min
Jul 27, 10:59 PM EDTSevere Thunderstorm WarningMRXCarter, Greene, Hawkins, Sullivan, Unicoi, Washington46 min
Jul 27, 11:13 PM EDTSevere Thunderstorm WarningMRXAnderson, Campbell, Jefferson, Knox, Loudon, Morgan and 3 more47 min
Jul 27, 11:14 PM EDTSevere Thunderstorm WarningMRXCocke, Grainger, Greene, Hamblen, Hawkins, Jefferson and 2 more61 min
Jul 27, 11:27 PM EDTSevere Thunderstorm WarningMRXCarter, Greene, Unicoi, Washington33 min
Jul 27, 11:39 PM EDTAreal Flood AdvisoryMRXAnderson, Grainger, Hamblen, Jefferson, Knox, Morgan and 2 more3 hr
Jul 27, 11:58 PM EDTSevere Thunderstorm WarningMRXBledsoe, Loudon, McMinn, Meigs, Rhea, Roane47 min
Jul 27, 11:59 PM EDTSevere Thunderstorm WarningMRXBlount, Cocke, Hamblen, Jefferson, Knox, Loudon and 1 more46 min
Jul 28, 12:02 AM EDTAreal Flood AdvisoryMRXBlount, Jefferson, Knox, Sevier3 hr
Jul 28, 12:44 AM EDTSpecial Weather StatementMRXBlount, Sevier61 min
Jul 28, 12:48 AM EDTSpecial Weather StatementMRXBradley, Hamilton, McMinn, Meigs, Monroe, Polk and 1 more57 min
Jul 28, 1:33 AM EDTSpecial Weather StatementMRXBradley, Hamilton, Marion, Polk, Sequatchie87 min
Jul 27, 10:41 PM EDTSpecial Weather StatementMRXWashington49 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2014Severe Thunderstorm Warnings in North Carolina, 2014Every 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.