Alert archive / North Carolina / Special Weather Statements in 2017
Special Weather Statement, NWS Morristown, TN
NWS Morristown, TN issued this special weather statement at Mar 28, 2017, 12:29 AM EDT for Polk County, Tennessee; Cherokee County, Clay County, North Carolina. It was in force for 61 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
- Mar 28, 2017, 12:29 AM EDT (04:29 UTC)
- Expired
- Mar 28, 2017, 1:30 AM EDT
- In force
- 61 min
- Issued by
- NWS Morristown, TN
Counties Cherokee County, NC, Clay County, NC, Polk County, TN
The radar
The Knoxville radar (KMRX), 123 km from the middle of the area, began a volume at 04:30 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
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 4.5 hours before the alert went out and 207 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
- 115 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1908 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 Mar 27, 10:24 PM EDT, 2 hours 5 minutes earlier.
Area forecast discussion, Mar 27, 10:24 PM EDT, 2 hours 5 minutes before
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</html>Hazardous weather outlook, Mar 27, 2:59 PM EDT, 9 hours 30 minutes before
Hazardous Weather Outlook National Weather Service Morristown TN 259 PM EDT Mon Mar 27 2017 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-281900- 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- 259 PM EDT Mon Mar 27 2017 /159 PM CDT Mon Mar 27 2017/ This Hazardous Weather Outlook is for portions of Southwest North Carolina...East Tennessee and Southwest Virginia. .DAY ONE...This Afternoon and Tonight Strong to potentially severe thunderstorms are expected this afternoon and evening for the Cumberland Plateau and the Tennessee Valley. Some of these storms will be capable of producing damaging wind gusts and hail up to quarter size. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Another storm system will move across the Tennessee Valley Thursday producing showers and thunderstorms. Some of these storms may become severe across the Plateau and southeast Tennessee by late afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed late this afternoon and evening, and again Thursday.
In the hours before
Special weather statement, Mar 27, 9:19 PM EDT, 3 hours 10 minutes before
Special Weather Statement
National Weather Service Morristown TN
919 PM EDT MON MAR 27 2017
TNZ037>039-069-070-280200-
Jefferson TN-Hamblen TN-Union TN-Knox TN-Grainger TN-
919 PM EDT MON MAR 27 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KNOX...NORTHERN
JEFFERSON...GRAINGER...SOUTHEASTERN UNION AND SOUTHWESTERN HAMBLEN
COUNTIES UNTIL 1000 PM EDT...
At 919 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Plainview, or 9 miles northeast of Knoxville, moving
northeast at 40 mph.
Wind gusts up to 50 mph will be possible with this storm.
Locations impacted include...
Knoxville, Morristown, Jefferson City, Rutledge, White Pine,
Plainview, New Market, Strawberry Plains, Halls, Blaine, Luttrell,
Thorn Hill, House Mountain S.p., Buffalo Springs, Panther Creek S.p.,
Alpha, Maloneyville, Mascot and Joppa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm 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.
&&
A severe thunderstorm watch remains in effect until 1100 PM EDT for
eastern Tennessee.
LAT...LON 3640 8344 3612 8326 3602 8362 3604 8365
3604 8367 3601 8367 3594 8390 3609 8400
3637 8358 3637 8356 3635 8354 3636 8353
3636 8352 3637 8351 3637 8349 3638 8350
3637 8345 3640 8346
TIME...MOT...LOC 0119Z 242DEG 35KT 3607 8382
AMP.23Special weather statement, Mar 27, 10:24 PM EDT, 2 hours 5 minutes before
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</html>The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 8:06 PM EDT | Special Weather Statement | MRX | Campbell, Claiborne | 39 min |
| Mar 27, 8:34 PM EDT | Special Weather Statement | MRX | Hancock | 41 min |
| Mar 27, 8:58 PM EDT | Severe Thunderstorm Warning | MRX | Blount, Knox, Sevier | 32 min |
| Mar 27, 9:15 PM EDT | Special Weather Statement | MRX | Monroe | 45 min |
| Mar 27, 9:19 PM EDT | Special Weather Statement | MRX | Grainger | 41 min |
| Mar 27, 9:28 PM EDT | Severe Thunderstorm Warning | MRX | Cocke, Greene, Hamblen, Jefferson, Knox, Sevier | 23 min |
| Mar 27, 10:24 PM EDT | Special Weather Statement | MRX | Bledsoe, Marion, Sequatchie | 51 min |
| Mar 27, 11:13 PM EDT | Special Weather Statement | MRX | Bradley, Hamilton, McMinn, Marion | 47 min |
| Mar 27, 11:56 PM EDT | Special Weather Statement | MRX | Bradley, Polk | 49 min |
| Mar 27, 8:18 PM EDT | Special Weather Statement | MRX | Cherokee | 42 min |
| Mar 27, 8:52 PM EDT | Special Weather Statement | MRX | Cherokee | 38 min |
| Mar 27, 9:23 PM EDT | Severe Thunderstorm Warning | MRX | Clay | 37 min |
Nearby
Special Weather Statements in North Carolina, 2017Special 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.