Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 49, NWS Morristown, TN

May 4, 2021Bledsoe County, Rhea County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 4, 2021, 8:48 AM CDT for Bledsoe County, Rhea County, Tennessee. It was in force for 27 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 4, 2021, 8:48 AM CDT (13:48 UTC)
Expired
May 4, 2021, 9:15 AM CDT
In force
27 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Tornado
Possible
Hail
0.88 in
Wind
60.0 mph

Counties Bledsoe County, TN, Rhea County, TN

The radar

The Northeast Alabama radar (KHTX), 116 km from the middle of the area, began a volume at 13:51 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.

What was reported inside it

TimeReportWhereRemark
May 4, 8:50 AM CDTTSTM WND DMGPikeville, TNMULTIPLE HOMES DAMAGED.
May 4, 8:55 AM CDTTSTM WND DMGPikeville, TNNUMEROUS TREES DOWN AND TRAILER BLOWN OVER IN THE PIKEVILLE AREA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
May 4, 5:13 AM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.8 hours before the alert went out and 245 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, Peachtre/Fal Fld, GA at 12:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 590 joules per kilogram.LCLLFCEL10008507005003002001001 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, Peachtre/Fal Fld, GA at 12:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 207 square meters per square second.193958Sfc1 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
590 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
753 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
207 m²/s²
0-3 km storm-relative helicity
213 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted.

345 
WUUS54 KMRX 041348
SVRMRX
TNC007-143-041415-
/O.NEW.KMRX.SV.W.0049.210504T1348Z-210504T1415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
948 AM EDT Tue May 4 2021

The National Weather Service in Morristown has issued a

* Severe Thunderstorm Warning for...
  Western Rhea County in east Tennessee...
  Central Bledsoe County in east Tennessee...

* Until 1015 AM EDT/915 AM CDT/.

* At 947 AM EDT/847 AM CDT/, a severe thunderstorm was located over
  Pikeville, moving east at 40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Dayton, Pikeville, Graysville, Evensville, Palio, Stinging Fork
  Falls State Park, Old Washington and Brayton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3566 8527 3576 8489 3555 8487 3553 8488
      3549 8486 3548 8490 3545 8491 3545 8497
      3547 8497 3545 8499 3547 8538 3548 8539
TIME...MOT...LOC 1347Z 256DEG 34KT 3556 8521 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
 
$$

CED

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 7:29 PM CDTSpecial Weather StatementMRXGreene, Unicoi, Washington46 min
May 3, 7:47 PM CDTSpecial Weather StatementMRXHamblen, Jefferson43 min
May 4, 2:10 AM CDTSevere Thunderstorm WarningMRXMorgan, Roane50 min
May 4, 2:53 AM CDTSevere Thunderstorm WarningMRXAnderson, Morgan, Roane52 min
May 4, 2:56 AM CDTSpecial Weather StatementMRXMorgan49 min
May 4, 3:12 AM CDTSpecial Weather StatementMRXMorgan48 min
May 4, 3:40 AM CDTSevere Thunderstorm WarningMRXAnderson, Knox30 min
May 4, 3:45 AM CDTSpecial Weather StatementMRXBlount45 min
May 4, 3:57 AM CDTAreal Flood AdvisoryMRXAnderson, Morgan, Roane3 hr
May 4, 4:14 AM CDTSpecial Weather StatementMRXKnox46 min
May 4, 4:34 AM CDTSpecial Weather StatementMRXBlount41 min
May 4, 5:05 AM CDTSevere Thunderstorm WarningMRXBlount, Sevier30 min
May 4, 5:11 AM CDTAreal Flood AdvisoryMRXAnderson, Knox3 hr
May 4, 5:16 AM CDTAreal Flood AdvisoryMRXBlount3 hr
May 4, 5:52 AM CDTSpecial Weather StatementMRXSevier53 min
May 4, 6:00 AM CDTFlash Flood WarningMRXBlount, Sevier3 hr
May 4, 6:24 AM CDTAreal Flood AdvisoryMRXScott3 hr
May 4, 6:58 AM CDTSpecial Weather StatementMRXCocke47 min
May 4, 8:05 AM CDTSpecial Weather StatementMRXMorgan, Scott40 min
May 4, 8:18 AM CDTSpecial Weather StatementMRXHamilton27 min
May 4, 8:37 AM CDTSevere Thunderstorm WarningMRXBledsoe, Morgan, Rhea, Roane38 min
May 4, 8:50 AM CDTSpecial Weather StatementMRXAnderson, Campbell, Claiborne, Union40 min
May 4, 8:53 AM CDTSpecial Weather StatementMRXHamilton, Marion, Sequatchie67 min
May 4, 9:03 AM CDTSevere Thunderstorm WarningMRXAnderson, Blount, Knox, Loudon, Roane13 min
May 4, 9:18 AM CDTSpecial Weather StatementMRXMcMinn, Meigs57 min
May 4, 9:24 AM CDTSpecial Weather StatementMRXBlount, Knox36 min
May 4, 9:37 AM CDTSpecial Weather StatementMRXHamblen38 min
May 4, 9:41 AM CDTSevere Thunderstorm WarningMRXBlount, Jefferson, Knox, Sevier34 min
May 4, 9:45 AM CDTSevere Thunderstorm WarningMRXBlount, Monroe30 min
May 4, 10:10 AM CDTSevere Thunderstorm WarningMRXCocke, Jefferson, Sevier22 min
May 4, 10:11 AM CDTFlash Flood WarningMRXHamilton, Marion, Sequatchie3 hr
May 4, 10:29 AM CDTAreal Flood WarningMRXBlount, Sevier6 hr
May 4, 10:44 AM CDTAreal Flood AdvisoryMRXBlount, Monroe2 hr
May 4, 10:47 AM CDTAreal Flood AdvisoryMRXBlount, Sevier118 min
May 4, 11:06 AM CDTSpecial Weather StatementMRXPolk24 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.