Alert archive / Tennessee / Special Weather Statements in 2017
Special Weather Statement, NWS Morristown, TN
NWS Morristown, TN issued this special weather statement at Jul 14, 2017, 2:13 PM EDT for Grainger County, Roane County, Union County, Tennessee. It was in force for 47 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 14, 2017, 2:13 PM EDT (18:13 UTC)
- Expired
- Jul 14, 2017, 3:00 PM EDT
- In force
- 47 min
- Issued by
- NWS Morristown, TN
Counties Grainger County, TN, Roane County, TN, Union County, TN
The radar
The Knoxville radar (KMRX), 69 km from the middle of the area, began a volume at 18:14 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 12:00Z, 6.2 hours before the alert went out and 223 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.
- Mixed-layer CAPE
- 1105 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 14, 1:19 PM EDT, 54 minutes earlier.
Area forecast discussion, Jul 14, 1:19 PM EDT, 54 minutes before
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</html>Hazardous weather outlook, Jul 14, 3:56 AM EDT, 10 hours 17 minutes before
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</html>In the hours before
Special weather statement, Jul 14, 1:28 PM EDT, 45 minutes before
Special Weather Statement
National Weather Service Morristown TN
128 PM EDT FRI JUL 14 2017
TNZ013>015-035>038-067-069-VAZ001-141815-
Anderson TN-Claiborne TN-Hancock TN-Union TN-Roane TN-Campbell TN-
Grainger TN-Knox TN-Morgan TN-Lee VA-
128 PM EDT FRI JUL 14 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MORGAN...
CLAIBORNE...ANDERSON...NORTHWESTERN KNOX...HANCOCK...CENTRAL
CAMPBELL...NORTHWESTERN GRAINGER...UNION...CENTRAL ROANE AND
SOUTHWESTERN LEE COUNTIES UNTIL 215 PM EDT...
At 127 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Smith to near Spring City. Movement was
southeast at 15 mph.
Winds in excess of 30 mph will be possible with these storms.
Locations impacted include...
Oak Ridge, Clinton, Lenoir City, La Follette, Kingston, Rockwood,
Maynardville, Sneedville, Wartburg, Oliver Springs, New Tazewell,
Tazewell, Plainview, Jacksboro, Midtown, Harrogate, Harriman,
Caryville, Lake City and Norris.
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.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3661 8298 3577 8452 3590 8470 3601 8474
3620 8447 3616 8444 3617 8440 3630 8433
3659 8392 3658 8369 3667 8352 3667 8342
3672 8325
TIME...MOT...LOC 1727Z 303DEG 12KT 3668 8325 3574 8487Special weather statement, Jul 14, 2:13 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Morristown TN
213 PM EDT FRI JUL 14 2017
TNZ014-036>038-067-069-141900-
Anderson TN-Claiborne TN-Union TN-Roane TN-Grainger TN-Knox TN-
213 PM EDT FRI JUL 14 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL CLAIBORNE...CENTRAL
ANDERSON...NORTHERN KNOX...WESTERN GRAINGER...SOUTHERN UNION AND
ROANE COUNTIES UNTIL 300 PM EDT...
At 213 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles northeast of Maynardville to near
Fairview. Movement was south at 10 to 15 mph.
Half inch hail and winds in excess of 30 mph will be possible with
these storms.
Locations impacted include...
Knoxville, Oak Ridge, Clinton, Kingston, Rockwood, Maynardville,
Rutledge, Fairview, Oliver Springs, Plainview, Midtown, Harriman,
Halls, Blaine, Luttrell, Lone Mountain, Buffalo Springs, Rose Hill,
Big Ridge State Park and Karns.
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.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3573 8465 3584 8469 3642 8362 3624 8342
3618 8356 3619 8356 3618 8357 3588 8425
3590 8428 3588 8428 3589 8433 3584 8434
3571 8463
TIME...MOT...LOC 1813Z 351DEG 8KT 3631 8369 3581 8461The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 1:28 PM EDT | Special Weather Statement | MRX | Anderson, Campbell, Claiborne, Hancock, Roane, Union | 47 min |
| Jul 14, 3:21 PM EDT | Special Weather Statement | MRX | Bledsoe, Rhea | 39 min |
| Jul 14, 3:28 PM EDT | Areal Flood Advisory | MRX | Bledsoe, Morgan, Rhea, Roane | 3 hr |
| Jul 14, 3:44 PM EDT | Special Weather Statement | MRX | Carter | 46 min |
| Jul 14, 4:07 PM EDT | Flash Flood Warning | MRX | Rhea | 83 min |
| Jul 14, 4:51 PM EDT | Areal Flood Advisory | MRX | Marion, Sequatchie | 114 min |
| Jul 14, 5:32 PM EDT | Special Weather Statement | MRX | Hamilton | 43 min |
| Jul 14, 5:39 PM EDT | Special Weather Statement | MRX | McMinn | 51 min |
| Jul 14, 3:00 PM EDT | Special Weather Statement | MRX | Washington, City of Bristol | 30 min |
Nearby
Special Weather Statements in Tennessee, 2017Every 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.