Alert archive / Tennessee / Special Weather Statements in 2016

Special Weather Statement, NWS Morristown, TN

May 7, 20165 counties in Tennessee; Scott County, Virginia

NWS Morristown, TN issued this special weather statement at May 7, 2016, 8:41 PM EDT for 5 counties in Tennessee; Scott County, Virginia. It was in force for 64 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
May 7, 2016, 8:41 PM EDT (00:41 UTC)
Expired
May 7, 2016, 9:45 PM EDT
In force
64 min
Issued by
NWS Morristown, TN

Counties Greene County, TN, Hamblen County, TN, Hawkins County, TN, Sullivan County, TN, Washington County, TN, Scott County, VA

The radar

The Knoxville radar (KMRX), 56 km from the middle of the area, began a volume at 00:44 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

Nashville Metro, TN (KBNA), launched 00:00Z, 0.7 hours before the alert went out and 338 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, Nashville Metro, TN at 00:00Z on 2016-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Nashville Metro, TN at 00:00Z on 2016-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2459 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 May 7, 8:10 PM EDT, 31 minutes earlier.

Area forecast discussion, May 7, 8:10 PM EDT, 31 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
810 PM EDT SAT MAY 7 2016

.DISCUSSION...QUICK UPDATE THIS EVENING TO RAMP UP POPS AS A LINE
OF SHOWERS AND STORMS MOVES OUT OF SOUTHEASTERN KENTUCKY AND DOWN
INTO THE EXTREME NORTHERN VALLEY...NORTHEAST TN...AND PORTIONS OF
SOUTHWEST VIRGINIA. HAVE UPDATED POPS...WX GRIDS...AND QPF AMOUNTS
TO ACCOUNT FOR THIS ACTIVITY MOVING THROUGH. POPS RAISED TO
CATEGORICAL...QPF TO AROUND A QUARTER OF AN INCH...AND LIKELY
THUNDERSTORMS. THIS ACTIVITY SHOULD CONTINUE TO WEAKEN AS IT MOVES
INTO THE AREA AS WE ARE LESS UNSTABLE THAN SOUTHEASTERN KENTUCKY.
THIS LINE SHOULD MOVE THROUGH THE AREA OVER THE NEXT 2 HOURS. NEW
ZONES WILL BE SENT TO ACCOUNT FOR AFOREMENTIONED ADJUSTMENTS.

&&

.PRELIMINARY POINT TEMPS/POPS...
CHATTANOOGA AIRPORT, TN             58  85  61  83 /  10  10  10  10
KNOXVILLE MCGHEE TYSON AIRPORT, TN  59  82  59  82 /  10  10  10  10
OAK RIDGE, TN                       60  82  60  82 /  20  10  10  10
TRI CITIES AIRPORT, TN              57  76  55  81 /  80  30  20  10

&&

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

SR
Hazardous weather outlook, May 7, 3:30 PM EDT, 5 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
330 PM EDT SAT MAY 7 2016

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-081930-
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-
330 PM EDT SAT MAY 7 2016 /230 PM CDT SAT MAY 7 2016/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

EXPECT A CHANCE OF THUNDERSTORMS THIS AFTERNOON AND TONIGHT ACROSS
NORTHEAST TENNESSEE...AND ESPECIALLY SOUTHWEST VIRGINIA. THERE IS
A MARGINAL RISK FOR A SEVERE THUNDERSTORM OR TWO ACROSS SOUTHWEST
VIRGINIA...CAPABLE OF PRODUCING DAMAGING WINDS AND HAIL OF ONE INCH
IN DIAMETER.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Special weather statement, May 7, 7:58 PM EDT, 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
758 PM EDT SAT MAY 7 2016

TNZ014-015-038-VAZ001-080100-
CLAIBORNE TN-GRAINGER TN-HANCOCK TN-LEE VA-
758 PM EDT SAT MAY 7 2016

...SIGNIFICANT WEATHER ADVISORY FOR CLAIBORNE...HANCOCK AND LEE
COUNTIES UNTIL 900 PM EDT...

AT 757 PM EDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM 25 MILES NORTHWEST OF PENNINGTON GAP TO 26
MILES NORTHWEST OF JONESVILLE TO 12 MILES NORTH OF HARROGATE-
SHAWANEE TO 21 MILES NORTHWEST OF NEW TAZEWELL. MOVEMENT WAS
SOUTHEAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
SNEEDVILLE...JONESVILLE...NEW TAZEWELL...TAZEWELL...PENNINGTON GAP...
HARROGATE-SHAWANEE...ST. CHARLES...DRYDEN...KYLES FORD...EVANSTON...
SPRINGDALE...PATTONSVILLE...HOWARD QUARTER...EWING...LONE MOUNTAIN...
CLAIRFIELD...ROSE HILL...JASPER...SANDLICK AND ARTHUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3680 8277 3659 8298 3659 8287 3655 8305
      3638 8329 3637 8327 3642 8343 3637 8346
      3635 8373 3643 8380 3643 8392 3657 8399
      3658 8369 3667 8352 3674 8314 3685 8307
      3689 8288
TIME...MOT...LOC 2357Z 309DEG 46KT 3701 8338 3696 8346 3686 8347 3677
8361 3669 8384

05/MA
Local storm report, May 7, 8:40 PM EDT, 1 minute before
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Special weather statement, May 7, 8:41 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 8:03 PM EDTSevere Thunderstorm WarningMRXClaiborne, Hancock42 min
May 7, 9:22 PM EDTSpecial Weather StatementMRXCocke, Unicoi23 min

Nearby

Special Weather Statements in Tennessee, 2016Special Weather Statements in Virginia, 2016Every special weather statement in 2016

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.