Alert archive / Tennessee / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 28, NWS Morristown, TN

May 18, 2019Hancock County, Tennessee; Lee County, Virginia

NWS Morristown, TN issued this severe thunderstorm warning at May 18, 2019, 8:38 PM EDT for Hancock County, Tennessee; Lee County, Virginia. It was in force for 29 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
May 18, 2019, 8:38 PM EDT (00:38 UTC)
Expired
May 18, 2019, 9:07 PM EDT
In force
29 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Hancock County, TN, Lee County, VA

The radar

The Knoxville radar (KMRX), 54 km from the middle of the area, began a volume at 00:39 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.6 hours before the alert went out and 318 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, Cncnati-Daytn, OH at 00:00Z on 2019-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 598 joules per kilogram.LCLEL10008507005003002001001 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, Cncnati-Daytn, OH at 00:00Z on 2019-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
598 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1759 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
97 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 May 18, 7:41 PM EDT, 57 minutes earlier.

Area forecast discussion, May 18, 7:41 PM EDT, 57 minutes before
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Hazardous weather outlook, May 18, 3:11 PM EDT, 5 hours 27 minutes before
Hazardous Weather Outlook
National Weather Service Morristown TN
311 PM EDT Sat May 18 2019

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-191915-
Cherokee-Clay-Scott-Campbell-Claiborne-Hancock-Hawkins-Sullivan-
Johnson-Morgan-Anderson-Union-Grainger-Hamblen-Northwest Cocke-
Cocke Smoky Mountains-Northwest Greene-Southeast Greene-
Washington-Unicoi-Northwest Carter-Southeast Carter-Roane-Loudon-
Knox-Jefferson-Northwest 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-Russell-
311 PM EDT Sat May 18 2019 /211 PM CDT Sat May 18 2019/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.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 18, 7:44 PM EDT, 54 minutes before
Special Weather Statement
National Weather Service Morristown TN
744 PM EDT Sat May 18 2019

TNZ039-190030-
Hamblen TN-
744 PM EDT Sat May 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN HAMBLEN COUNTY UNTIL 830
PM EDT...

At 744 PM EDT, Doppler radar was tracking a strong thunderstorm near
Morristown, moving northeast at 5 mph.

Pea size hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Morristown, Russellville and Lowland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3631 8315 3624 8308 3619 8314 3617 8319
      3614 8318 3613 8320 3615 8322 3613 8322
      3613 8327 3621 8333 3629 8325 3628 8323
      3630 8323 3629 8322 3632 8320 3632 8317
      3633 8318 3635 8316
TIME...MOT...LOC 2344Z 237DEG 5KT 3618 8325

CDG
Special weather statement, May 18, 7:56 PM EDT, 42 minutes before
Special Weather Statement
National Weather Service Morristown TN
756 PM EDT Sat May 18 2019

TNZ015-016-190045-
Hancock TN-Hawkins TN-
756 PM EDT Sat May 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL HAWKINS AND NORTHEASTERN
HANCOCK COUNTIES UNTIL 845 PM EDT...

At 756 PM EDT, trained weather spotters reported a strong
thunderstorm over Rogersville, moving north at 15 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

Locations impacted include...
Rogersville, Surgoinsville, Okolona, Kepler, Kyles Ford and McCloud.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3636 8285 3636 8286 3635 8288 3635 8289
      3633 8291 3633 8294 3635 8309 3659 8308
      3659 8276
TIME...MOT...LOC 2356Z 190DEG 13KT 3641 8297

CDG
Special weather statement, May 18, 7:59 PM EDT, 39 minutes before
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Local storm report, May 18, 8:10 PM EDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
810 PM EDT SAT MAY 18 2019

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

0643 PM     TSTM WND DMG     1 W KNOXVILLE           35.97N 83.96W
05/18/2019                   KNOX               TN   911 CALL CENTER

            TREE ACROSS ROAD AT THE 100 BLOCK OF
            RICHMOND AVENUE.

&&

GARUCKAS
Local storm report, May 18, 8:14 PM EDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
814 PM EDT SAT MAY 18 2019

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

0631 PM     TSTM WND DMG     2 WSW BEARDEN           35.92N 84.04W
05/18/2019                   KNOX               TN   911 CALL CENTER

            TREES DOWN AT THE CORNER OF FOREST HILL
            DRIVE AND GLEASON DRIVE.

&&

GARUCKAS
Special weather statement, May 18, 8:28 PM EDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 8:28 PM EDTSpecial Weather StatementMRXHancock47 min
May 19, 5:22 PM EDTSpecial Weather StatementMRXSullivan53 min
May 19, 2:59 PM EDTSpecial Weather StatementMRXScott46 min
May 19, 3:15 PM EDTSpecial Weather StatementMRXScott, Wise, City of Norton45 min
May 19, 3:16 PM EDTSpecial Weather StatementMRXScott44 min
May 19, 4:07 PM EDTSpecial Weather StatementMRXCity of Bristol53 min
May 19, 4:39 PM EDTSpecial Weather StatementMRXRussell51 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2019Severe Thunderstorm Warnings in Virginia, 2019Every severe thunderstorm warning in 2019

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.