Alert archive / Tennessee / Special Weather Statements in 2017

Special Weather Statement, NWS Morristown, TN

July 6, 20174 counties in Tennessee; City of Bristol, Virginia

NWS Morristown, TN issued this special weather statement at Jul 6, 2017, 8:49 PM EDT for 4 counties in Tennessee; City of Bristol, Virginia. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 6, 2017, 8:49 PM EDT (00:49 UTC)
Expired: Jul 6, 2017, 9:30 PM EDT
In force: 41 min
Issued by: NWS Morristown, TN

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

The radar

The Knoxville radar (KMRX), 100 km from the middle of the area, began a volume at 00:50 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.8 hours before the alert went out and 220 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: 1222 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1441 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 6, 7:44 PM EDT, 1 hour 5 minutes earlier.

Area forecast discussion, Jul 6, 7:44 PM EDT, 1 hour 5 minutes before

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Hazardous weather outlook, Jul 6, 2:50 PM EDT, 5 hours 59 minutes before

Hazardous Weather Outlook
National Weather Service Morristown TN
250 PM EDT Thu Jul 6 2017

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-071900-
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-
250 PM EDT Thu Jul 6 2017 /150 PM CDT Thu Jul 6 2017/

This Hazardous Weather Outlook is for portions of Southwest North
Carolina...East Tennessee and Southwest Virginia.

.DAY ONE...This Afternoon and Tonight

Showers and thunderstorms are expected through tonight, and a few
of these storms may become strong to severe. Damaging winds,
along with heavy rainfall which can lead to localized flooding,
are expected to be the primary threats with these storms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A cold front will push through the area and bring scattered
showers and thunderstorms on Saturday. Some of these storms may
strong winds and locally heavy rain.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Local storm report, Jul 6, 7:29 PM EDT, 1 hour 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
729 PM EDT THU JUL 06 2017

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

0709 PM     TSTM WND DMG     LA FOLLETTE             36.37N 84.13W
07/06/2017                   CAMPBELL           TN   911 CALL CENTER

            HIGH WINDS REPORTED WITH SEVERAL TREES DOWN.

&&

DH

Local storm report, Jul 6, 7:42 PM EDT, 1 hour 7 minutes before

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Special weather statement, Jul 6, 7:57 PM EDT, 52 minutes before

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Special weather statement, Jul 6, 8:14 PM EDT, 35 minutes before

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Special weather statement, Jul 6, 8:42 PM EDT, 7 minutes before

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Special weather statement, Jul 6, 8:49 PM EDT, 0 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
Jul 6, 8:14 PM EDT	Special Weather Statement	MRX	Greene, Hamblen, Hawkins, Sullivan, Washington	46 min
Jul 6, 8:42 PM EDT	Special Weather Statement	MRX	Anderson, Knox, Morgan	48 min
Jul 6, 8:51 PM EDT	Special Weather Statement	MRX	Marion	54 min
Jul 6, 9:32 PM EDT	Special Weather Statement	MRX	Jefferson, Knox	43 min
Jul 7, 8:05 AM EDT	Areal Flood Advisory	MRX	Carter, Unicoi, Washington	3 hr
Jul 7, 9:50 AM EDT	Areal Flood Advisory	MRX	Bledsoe, Rhea	115 min

Nearby

Special Weather Statements in Tennessee, 2017 Special Weather Statements in Virginia, 2017 Every special weather statement in 2017

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.