Alert archive / Tennessee / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 110, NWS Morristown, TN

July 1, 2015McMinn County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jul 1, 2015, 2:27 PM EDT for McMinn County, Tennessee. It was in force for 33 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 1, 2015, 2:27 PM EDT (18:27 UTC)
Expired: Jul 1, 2015, 3:00 PM EDT
In force: 33 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County McMinn County, TN

The radar

The Knoxville radar (KMRX), 137 km from the middle of the area, began a volume at 18:28 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 1, 12:45 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.5 hours before the alert went out and 195 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: 477 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 995 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

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 1, 1:26 PM EDT, 1 hour 1 minute earlier.

Area forecast discussion, Jul 1, 1:26 PM EDT, 1 hour 1 minute before

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Hazardous weather outlook, Jul 1, 3:47 AM EDT, 10 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
347 AM EDT WED JUL 1 2015

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-020800-
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-
347 AM EDT WED JUL 1 2015

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

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

MORE SHOWERS AND THUNDERSTORMS ARE EXPECTED AGAIN TODAY AND TONIGHT
AS AN UPPER LEVEL TROUGH BUILDS INTO THE REGION. THE MAIN THREAT
WITH THESE STORMS WILL BE FROM DAMAGING WIND GUSTS AND LOCALLY
HEAVY DOWNPOURS THAT COULD LEAD TO SOME LOCALIZED FLOODING.

NO HAZARDOUS WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

AN UPPER TROUGH OF LOW PRESSURE WILL REMAIN ACROSS THE EASTERN
STATES FOR MUCH OF THE WEEK. SEVERAL ROUNDS OF DISTURBANCES MOVING
AROUND THE TROUGH WILL BRING NUMEROUS SHOWERS AND THUNDERSTORMS
EACH DAY. SOME OF THE STORMS MAY BE STRONG TO SEVERE...WITH THE
MAIN CONCERN BEING STRONG DOWNBURST WINDS...TORRENTIAL RAINS...AND
FREQUENT LIGHTNING. LOCALIZED FLASH FLOODING IS POSSIBLE...WITH THE
GREATEST RISK OF FLOODING EXPECTED TO BE THURSDAY THROUGH FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED AT TIMES TODAY THROUGH FRIDAY.

In the hours before

Local storm report, Jul 1, 1:02 PM EDT, 1 hour 25 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MORRISTOWN TN
102 PM EDT WED JUL 01 2015

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

0140 PM     TSTM WND DMG     DAYTON                  35.49N 85.01W
06/30/2015                   RHEA               TN   EMERGENCY MNGR

            COUPLE TREES DOWN NEAR DAYTON

0230 PM     TSTM WND DMG     HARRIMAN                35.93N 84.56W
06/30/2015                   ROANE              TN   911 CALL CENTER

            MULTIPLE TREES DOWN ACROSS THE NORTHERN HALF OF THE
            COUNTY BETWEEN 215 AND 245

0230 PM     TSTM WND DMG     2 SW KINGSTON           35.85N 84.54W
06/30/2015                   ROANE              TN   911 CALL CENTER

            ONE TREE DOWN PER PICTURE ON WBIR FACEBOOK-TIME ESTIMATED

0250 PM     FLASH FLOOD      HARRIMAN                35.93N 84.56W
06/30/2015                   ROANE              TN   911 CALL CENTER

            SEVERAL ROADS COVERED WITH WATER

0305 PM     TSTM WND DMG     LENOIR CITY             35.80N 84.27W
06/30/2015                   LOUDON             TN   911 CALL CENTER

            COUPLE OF TREES DOWN.

0309 PM     HAIL             3 E FARRAGUT            35.87N 84.13W
06/30/2015  E0.75 INCH       KNOX               TN   TRAINED SPOTTER

0335 PM     HAIL             ELGIN                   36.33N 84.61W
06/30/2015  E0.50 INCH       SCOTT              TN   TRAINED SPOTTER

0345 PM     TSTM WND DMG     2 N ELGIN               36.36N 84.61W
06/30/2015                   SCOTT              TN   911 CALL CENTER

            ONE TREE DOWN ON BLACK CREEK RD

0345 PM     TSTM WND DMG     3 N KODAK               36.02N 83.63W
06/30/2015                   SEVIER             TN   PUBLIC

            4 TO 5 INCH TREE LIMBS DOWN

&&

Special weather statement, Jul 1, 1:19 PM EDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
119 PM EDT WED JUL 1 2015

TNZ012-011745-
SCOTT TN-
119 PM EDT WED JUL 1 2015

SIGNIFICANT WEATHER ADVISORY FOR SCOTT COUNTY UNTIL 145 PM EDT...

AT 119 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7
MILES SOUTH OF MOUNT PISGAH...OR 9 MILES NORTHEAST OF JAMESTOWN...
MOVING EAST AT 35 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
ONEIDA...HUNTSVILLE...HELENWOOD...WINFIELD...BIG SOUTH FORK NATIONAL
AND HONEY CREEK S.P..

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.

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 700 PM EDT FOR
CENTRAL TENNESSEE.

LAT...LON 3659 8435 3634 8439 3639 8467 3641 8467
      3641 8466 3644 8469 3650 8471 3660 8478
TIME...MOT...LOC 1719Z 277DEG 30KT 3655 8484

AMP.23

Special weather statement, Jul 1, 1:54 PM EDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
154 PM EDT WED JUL 1 2015

TNZ012>014-036-037-011845-
CAMPBELL TN-SCOTT TN-ANDERSON TN-CLAIBORNE TN-UNION TN-
154 PM EDT WED JUL 1 2015

SIGNIFICANT WEATHER ADVISORY FOR CAMPBELL...SCOTT...ANDERSON...
CLAIBORNE...AND UNION COUNTIES UNTIL 245 PM EDT...

AT 154 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
HELENWOOD...OR NEAR ONEIDA...MOVING EAST AT 30 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LA FOLLETTE...ONEIDA...JACKSBORO...HUNTSVILLE...HELENWOOD...
JELLICO...CARYVILLE...NORRIS...WINFIELD...COVE LAKE S.P....BIG RIDGE
S.P....ELK VALLEY...PAULETTE...WHITE OAK...KETCHEN...NORRIS LAKE...
CLAIRFIELD...ROYAL BLUE...FINCASTLE AND NORMA.

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.

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 700 PM EDT FOR
CENTRAL TENNESSEE.

LAT...LON 3659 8393 3618 8389 3638 8469 3639 8469
      3640 8466 3641 8467 3641 8466 3643 8469
      3646 8470 3659 8464
TIME...MOT...LOC 1754Z 285DEG 28KT 3645 8453

AMP.23

Special weather statement, Jul 1, 2:16 PM EDT, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
116 PM CDT WED JUL 1 2015

TNZ098-011900-
MARION TN-
116 PM CDT WED JUL 1 2015

SIGNIFICANT WEATHER ADVISORY FOR MARION COUNTY UNTIL 200 PM CDT...

AT 115 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
KIMBALL...OR 7 MILES NORTHWEST OF JASPER...MOVING EAST AT 35 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
JASPER...SOUTH PITTSBURG...WHITWELL...KIMBALL...MONTEAGLE...POWELLS
CROSSROADS...ORME...MARTIN SPRINGS...FOSTER FALLS S.P....SEQUATCHIE
CAVE...HALETOWN (GUILD)...HICKS GAP S.P....FIERY GIZZARD S.P. AND NEW
HOPE.

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.

IF ON OR NEAR NICKAJACK LAKE...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 15 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW. DO
NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 PM CDT FOR
CENTRAL TENNESSEE.

LAT...LON 3523 8586 3521 8575 3522 8572 3520 8540
      3518 8539 3511 8539 3509 8536 3507 8536
      3504 8539 3504 8541 3500 8543 3498 8548
      3498 8554 3503 8586
TIME...MOT...LOC 1815Z 280DEG 29KT 3512 8574

AMP.23

Special weather statement, Jul 1, 2:23 PM EDT, 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
223 PM EDT WED JUL 1 2015

TNZ085-011915-
MCMINN TN-
223 PM EDT WED JUL 1 2015

SIGNIFICANT WEATHER ADVISORY FOR MCMINN COUNTY UNTIL 315 PM EDT...

AT 223 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ATHENS...MOVING SOUTHEAST AT 15 MPH.

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

LOCATIONS IMPACTED INCLUDE...
ATHENS...ETOWAH...ENGLEWOOD...RICEVILLE AND DENTVILLE.

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!

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FOR
CENTRAL TENNESSEE.

LAT...LON 3527 8463 3541 8482 3547 8479 3547 8477
      3552 8474 3543 8444 3542 8443 3540 8443
      3540 8441 3535 8441 3532 8443 3531 8447
      3527 8452
TIME...MOT...LOC 1823Z 298DEG 12KT 3542 8471

AMP.23

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 1:19 PM EDT	Special Weather Statement	MRX	Scott	26 min
Jul 1, 1:54 PM EDT	Special Weather Statement	MRX	Campbell, Scott	51 min
Jul 1, 2:03 PM EDT	Areal Flood Advisory	MRX	McMinn, Meigs	3 hr
Jul 1, 2:16 PM EDT	Special Weather Statement	MRX	Marion	44 min
Jul 1, 2:23 PM EDT	Special Weather Statement	MRX	McMinn	52 min
Jul 1, 2:36 PM EDT	Special Weather Statement	MRX	Polk	39 min
Jul 1, 2:58 PM EDT	Special Weather Statement	MRX	Bradley	47 min
Jul 1, 3:01 PM EDT	Areal Flood Advisory	MRX	McMinn, Monroe, Polk	119 min
Jul 1, 3:14 PM EDT	Special Weather Statement	MRX	Polk	46 min
Jul 1, 3:17 PM EDT	Special Weather Statement	MRX	Grainger, Union	43 min
Jul 1, 3:28 PM EDT	Special Weather Statement	MRX	Marion	47 min
Jul 1, 3:37 PM EDT	Flash Flood Warning	MRX	McMinn, Monroe, Polk	113 min
Jul 1, 3:41 PM EDT	Special Weather Statement	MRX	Hamblen	49 min
Jul 1, 4:49 PM EDT	Special Weather Statement	MRX	Greene, Unicoi, Washington	56 min
Jul 1, 3:16 PM EDT	Special Weather Statement	MRX	Cherokee	44 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 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; radar from the NEXRAD Level II archive.