Alert archive / Tennessee / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Morristown, TN

March 1, 2017Bledsoe County, Rhea County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Mar 1, 2017, 12:11 PM CST for Bledsoe County, Rhea County, Tennessee. 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 outline as issued.

The facts

Issued
Mar 1, 2017, 12:11 PM CST (18:11 UTC)
Expired
Mar 1, 2017, 12:40 PM CST
In force
29 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bledsoe County, TN, Rhea County, TN

The radar

The Northeast Alabama radar (KHTX), 137 km from the middle of the area, began a volume at 18:12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 1, 11:48 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.2 hours before the alert went out and 156 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 12:00Z on 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 694 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 361 square meters per square second.1939587897117136156Sfc1 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
694 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
842 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
361 m²/s²
0-3 km storm-relative helicity
344 m²/s²
Significant tornado parameter
1.6
Supercell composite
9.1

Open this sounding in Storm Lab

The text

As transmitted.

483 
WUUS54 KMRX 011811
SVRMRX
TNC007-143-011915-
/O.NEW.KMRX.SV.W.0013.170301T1811Z-170301T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
111 PM EST WED MAR 1 2017

The National Weather Service in Morristown has issued a

* Severe Thunderstorm Warning for...
  Northern Rhea County in eastern Tennessee...
  Northern Bledsoe County in eastern Tennessee...

* Until 215 PM EST/115 PM CST/

* At 110 PM EST/1210 PM CST/, a severe thunderstorm was located near
  Pikeville, moving east at 40 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Pikeville, Spring City, Piney Falls S.p., Stinging Fork Falls S.p.,
  Fall Creek Falls State Park, Grandview, Melvine and Mount Crest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 700 PM EST/600 PM CST/ for
eastern Tennessee.

LAT...LON 3572 8526 3576 8527 3577 8525 3576 8507
      3577 8504 3575 8503 3576 8492 3583 8479
      3581 8479 3579 8474 3576 8476 3575 8473
      3573 8471 3569 8473 3568 8475 3570 8477
      3568 8478 3562 8478 3558 8541
TIME...MOT...LOC 1810Z 265DEG 33KT 3567 8527 

HAIL...1.00IN
WIND...60MPH
 
$$

mjb
2 follow-up statements
356 
WWUS54 KMRX 011830
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
130 PM EST WED MAR 1 2017

TNC007-143-011915-
/O.CON.KMRX.SV.W.0013.000000T0000Z-170301T1915Z/
Rhea TN-Bledsoe TN-
130 PM EST WED MAR 1 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM
EST/115 PM CST/ FOR NORTHERN RHEA AND NORTHERN BLEDSOE COUNTIES...

At 130 PM EST/1230 PM CST/, a severe thunderstorm was located 10
miles northwest of Spring City, or 13 miles northeast of Pikeville,
moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Pikeville, Spring City, Piney Falls S.p., Stinging Fork Falls S.p.,
Fall Creek Falls State Park, Grandview, Melvine and Mount Crest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 700 PM EST/600 PM CST/ for
eastern Tennessee.

LAT...LON 3572 8526 3576 8527 3577 8525 3576 8507
      3577 8504 3575 8503 3576 8492 3583 8479
      3581 8479 3579 8474 3576 8476 3575 8473
      3573 8471 3569 8473 3568 8475 3570 8477
      3568 8478 3562 8478 3558 8541
TIME...MOT...LOC 1830Z 257DEG 34KT 3575 8504 

HAIL...1.00IN
WIND...60MPH
 
$$

mjb
219 
WWUS54 KMRX 011840
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
140 PM EST WED MAR 1 2017

TNC007-143-011850-
/O.CAN.KMRX.SV.W.0013.000000T0000Z-170301T1915Z/
Rhea TN-Bledsoe TN-
140 PM EST WED MAR 1 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN RHEA AND NORTHERN
BLEDSOE COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A tornado watch remains in effect until 700 PM EST/600 PM CST/ for
eastern Tennessee.

LAT...LON 3572 8526 3576 8527 3577 8525 3576 8507
      3577 8504 3575 8503 3576 8492 3583 8479
      3581 8479 3579 8474 3576 8476 3575 8473
      3573 8471 3569 8473 3568 8475 3570 8477
      3568 8478 3562 8478 3558 8541
TIME...MOT...LOC 1830Z 265DEG 33KT 3576 8492 

$$

mjb

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 1, 8:37 AM CSTSevere Thunderstorm WarningMRXAnderson, Campbell, Morgan, Roane, Scott53 min
Mar 1, 9:30 AM CSTSevere Thunderstorm WarningMRXAnderson, Campbell, Claiborne, Grainger, Knox, Roane and 1 more45 min
Mar 1, 10:06 AM CSTSevere Thunderstorm WarningMRXCampbell, Claiborne, Hancock, Hawkins54 min
Mar 1, 10:10 AM CSTSevere Thunderstorm WarningMRXHancock, Hawkins, Sullivan65 min
Mar 1, 10:15 AM CSTSpecial Weather StatementMRXAnderson, Grainger, Jefferson, Knox60 min
Mar 1, 10:43 AM CSTSpecial Weather StatementMRXGrainger, Union62 min
Mar 1, 11:00 AM CSTAreal Flood AdvisoryMRXCampbell, Claiborne3 hr
Mar 1, 11:14 AM CSTSpecial Weather StatementMRXSullivan, Washington46 min
Mar 1, 11:21 AM CSTSevere Thunderstorm WarningMRXJohnson, Sullivan24 min
Mar 1, 11:28 AM CSTSpecial Weather StatementMRXSullivan, Washington62 min
Mar 1, 11:52 AM CSTSpecial Weather StatementMRXBledsoe, Rhea38 min
Mar 1, 11:58 AM CSTSpecial Weather StatementMRXCarter, Johnson, Sullivan, Washington62 min
Mar 1, 12:04 PM CSTSpecial Weather StatementMRXGreene, Hamblen, Jefferson56 min
Mar 1, 12:06 PM CSTSevere Thunderstorm WarningMRXCarter, Johnson, Sullivan, Washington54 min
Mar 1, 12:22 PM CSTAreal Flood AdvisoryMRXAnderson, Morgan, Roane3 hr
Mar 1, 12:23 PM CSTSevere Thunderstorm WarningMRXAnderson, Blount, Knox, Loudon, Roane52 min
Mar 1, 12:35 PM CSTFlash Flood WarningMRXAnderson, Knox, Loudon, Roane3 hr
Mar 1, 12:51 PM CSTAreal Flood AdvisoryMRXBledsoe, Rhea3 hr
Mar 1, 12:58 PM CSTSevere Thunderstorm WarningMRXBledsoe, Hamilton, Marion, Meigs, Rhea, Sequatchie62 min
Mar 1, 1:06 PM CSTFlash Flood WarningMRXAnderson, Grainger, Knox, Union3 hr
Mar 1, 1:07 PM CSTSpecial Weather StatementMRXCocke, Hamblen, Jefferson, Knox, Sevier53 min
Mar 1, 1:22 PM CSTAreal Flood AdvisoryMRXCocke, Grainger, Hamblen, Jefferson, Sevier3 hr
Mar 1, 1:28 PM CSTAreal Flood AdvisoryMRXGreene, Hawkins3 hr
Mar 1, 1:29 PM CSTSpecial Weather StatementMRXCarter, Greene, Unicoi, Washington46 min
Mar 1, 1:30 PM CSTSevere Thunderstorm WarningMRXMarion45 min
Mar 1, 1:59 PM CSTSpecial Weather StatementMRXHamilton, McMinn, Meigs, Rhea61 min
Mar 1, 2:00 PM CSTFlash Flood WarningMRXGrainger, Hamblen, Jefferson3 hr
Mar 1, 2:02 PM CSTSevere Thunderstorm WarningMRXHamilton, Marion58 min
Mar 1, 2:03 PM CSTSpecial Weather StatementMRXBlount, Cocke, Jefferson, Loudon, Sevier57 min
Mar 1, 2:20 PM CSTSevere Thunderstorm WarningMRXBlount, Knox, Sevier30 min
Mar 1, 2:30 PM CSTAreal Flood AdvisoryMRXBlount, Knox3 hr
Mar 1, 2:30 PM CSTSpecial Weather StatementMRXMcMinn, Monroe60 min
Mar 1, 2:35 PM CSTSevere Thunderstorm WarningMRXBradley, Hamilton, McMinn, Meigs, Monroe, Polk55 min
Mar 1, 2:59 PM CSTSpecial Weather StatementMRXCarter, Cocke, Greene, Monroe, Sevier, Unicoi46 min
Mar 1, 3:03 PM CSTAreal Flood AdvisoryMRXHawkins, Sullivan, Washington117 min
Mar 1, 3:10 PM CSTSevere Thunderstorm WarningMRXBlount, Monroe18 min
Mar 1, 3:27 PM CSTSevere Thunderstorm WarningMRXPolk18 min
Mar 1, 3:31 PM CSTAreal Flood AdvisoryMRXCocke, Greene, Jefferson3 hr
Mar 1, 3:46 PM CSTFlash Flood WarningMRXBlount, Jefferson, Knox, Loudon, Sevier3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2017Every severe thunderstorm warning 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.