Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 27, NWS Morristown, TN

March 27, 2021Marion County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Mar 27, 2021, 6:43 PM CDT for Marion County, Tennessee. It was in force for 47 min. 1 report 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
Mar 27, 2021, 6:43 PM CDT (23:43 UTC)
Expired
Mar 27, 2021, 7:30 PM CDT
In force
47 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Marion County, TN

The radar

The Northeast Alabama radar (KHTX), 47 km from the middle of the area, began a volume at 23:43 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
Mar 27, 7:20 PM CDTHAIL 17 W Martin Springs, TN

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

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.7 hours before the alert went out and 131 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 2021-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 2021-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 347 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
710 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
347 m²/s²
0-3 km storm-relative helicity
316 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

383 
WUUS54 KMRX 272343
SVRMRX
TNC115-280030-
/O.NEW.KMRX.SV.W.0027.210327T2343Z-210328T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
643 PM CDT Sat Mar 27 2021

The National Weather Service in Morristown has issued a

* Severe Thunderstorm Warning for...
  Marion County in east Tennessee...

* Until 730 PM CDT.

* At 642 PM CDT, a severe thunderstorm was located 8 miles northwest
  of Stevenson, or 13 miles west of Bridgeport, moving northeast at
  45 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Jasper, South Pittsburg, Whitwell, Kimball, Monteagle, Powells
  Crossroads, Orme, Martin Springs, Fiery Gizzard State Park and
  Griffith Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large hail and damaging winds and continuous cloud to ground 
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

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

&&

LAT...LON 3519 8587 3524 8583 3522 8577 3522 8574
      3524 8569 3529 8571 3529 8569 3531 8565
      3532 8556 3530 8555 3527 8549 3526 8544
      3522 8540 3499 8572 3499 8586 3500 8586
TIME...MOT...LOC 2342Z 222DEG 41KT 3495 8596 

HAIL...1.25IN
WIND...60MPH
 
$$

DH
1 follow-up statement
608 
WWUS54 KMRX 272356
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
656 PM CDT Sat Mar 27 2021

TNC115-280030-
/O.CON.KMRX.SV.W.0027.000000T0000Z-210328T0030Z/
Marion TN-
656 PM CDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR MARION COUNTY...

At 655 PM CDT, a severe thunderstorm was located near South
Pittsburg, or 9 miles west of Jasper, moving northeast at 50 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Jasper, South Pittsburg, Whitwell, Kimball, Monteagle, Powells
Crossroads, Orme, Martin Springs, Fiery Gizzard State Park and
Griffith Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 3519 8587 3524 8583 3522 8577 3522 8574
      3524 8569 3529 8571 3529 8569 3531 8565
      3532 8556 3530 8555 3527 8549 3526 8544
      3522 8540 3499 8572 3499 8586 3500 8586
TIME...MOT...LOC 2355Z 225DEG 45KT 3508 8579 

HAIL...1.50IN
WIND...60MPH
 
$$

DH

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 27, 4:03 AM CDTSpecial Weather StatementMRXMarion, Sequatchie42 min
Mar 27, 4:23 AM CDTSevere Thunderstorm WarningMRXBledsoe, Hamilton, Marion, Sequatchie39 min
Mar 27, 4:47 AM CDTSpecial Weather StatementMRXHamilton43 min
Mar 27, 5:08 AM CDTSevere Thunderstorm WarningMRXBradley, Hamilton52 min
Mar 27, 5:41 AM CDTSevere Thunderstorm WarningMRXBradley, Polk49 min
Mar 27, 6:46 AM CDTSpecial Weather StatementMRXRoane44 min
Mar 27, 6:58 AM CDTSevere Thunderstorm WarningMRXMorgan47 min
Mar 27, 7:27 AM CDTSpecial Weather StatementMRXScott48 min
Mar 27, 7:37 AM CDTSpecial Weather StatementMRXKnox38 min
Mar 27, 7:42 AM CDTSevere Thunderstorm WarningMRXScott26 min
Mar 27, 7:58 AM CDTSpecial Weather StatementMRXKnox, Loudon47 min
Mar 27, 8:18 AM CDTSevere Thunderstorm WarningMRXGrainger, Knox, Union42 min
Mar 27, 8:39 AM CDTSevere Thunderstorm WarningMRXKnox, Sevier30 min
Mar 27, 8:43 AM CDTSevere Thunderstorm WarningMRXClaiborne, Grainger, Hancock, Hawkins47 min
Mar 27, 9:00 AM CDTSevere Thunderstorm WarningMRXCocke, Hamblen, Jefferson45 min
Mar 27, 9:06 AM CDTSevere Thunderstorm WarningMRXCampbell, Scott54 min
Mar 27, 9:14 AM CDTSpecial Weather StatementMRXAnderson, Campbell, Morgan, Scott46 min
Mar 27, 9:30 AM CDTSpecial Weather StatementMRXHawkins45 min
Mar 27, 9:33 AM CDTSevere Thunderstorm WarningMRXGreene42 min
Mar 27, 9:33 AM CDTSevere Thunderstorm WarningMRXCampbell, Claiborne42 min
Mar 27, 9:36 AM CDTFlash Flood WarningMRXMorgan, Scott4 hr
Mar 27, 9:41 AM CDTSevere Thunderstorm WarningMRXHawkins49 min
Mar 27, 9:51 AM CDTSpecial Weather StatementMRXAnderson, Morgan39 min
Mar 27, 10:00 AM CDTSpecial Weather StatementMRXClaiborne45 min
Mar 27, 10:07 AM CDTSevere Thunderstorm WarningMRXSullivan38 min
Mar 27, 10:11 AM CDTSevere Thunderstorm WarningMRXUnicoi, Washington35 min
Mar 27, 10:20 AM CDTSpecial Weather StatementMRXGrainger, Hamblen, Union40 min
Mar 27, 10:30 AM CDTSevere Thunderstorm WarningMRXClaiborne, Hancock22 min
Mar 27, 10:32 AM CDTSevere Thunderstorm WarningMRXCarter, Johnson, Sullivan, Unicoi, Washington43 min
Mar 27, 10:45 AM CDTAreal Flood AdvisoryMRXHawkins, Sullivan3 hr
Mar 27, 10:46 AM CDTSpecial Weather StatementMRXHamblen, Jefferson44 min
Mar 27, 10:48 AM CDTAreal Flood AdvisoryMRXCampbell, Claiborne3 hr
Mar 27, 10:50 AM CDTAreal Flood AdvisoryMRXCarter, Greene, Washington3 hr
Mar 27, 10:56 AM CDTSpecial Weather StatementMRXMonroe49 min
Mar 27, 11:07 AM CDTAreal Flood AdvisoryMRXAnderson, Knox3 hr
Mar 27, 11:12 AM CDTAreal Flood AdvisoryMRXClaiborne, Hancock3 hr
Mar 27, 11:17 AM CDTSpecial Weather StatementMRXJohnson43 min
Mar 27, 11:23 AM CDTSpecial Weather StatementMRXHawkins52 min
Mar 27, 12:01 PM CDTSevere Thunderstorm WarningMRXCarter, Johnson, Sullivan, Unicoi, Washington44 min
Mar 27, 2:13 PM CDTWind AdvisoryMRXBlount, Carter, Cocke, Greene, Johnson, Monroe and 2 more23 hr
Mar 27, 2:34 PM CDTSpecial Weather StatementMRXCampbell, Morgan41 min
Mar 27, 4:05 PM CDTAreal Flood WarningMRXAnderson, Campbell, Claiborne, Morgan, Scott, Union3 hr
Mar 27, 4:38 PM CDTAreal Flood WarningMRXClaiborne, Grainger, Hancock, Hawkins, Union3 hr
Mar 27, 4:49 PM CDTSpecial Weather StatementMRXAnderson, Morgan41 min
Mar 27, 5:13 PM CDTAreal Flood WarningMRXBlount, Sevier3 hr
Mar 27, 5:59 PM CDTSpecial Weather StatementMRXMorgan, Scott46 min
Mar 27, 6:02 PM CDTSpecial Weather StatementMRXMarion, Sequatchie43 min
Mar 27, 6:15 PM CDTSevere Thunderstorm WarningMRXCampbell, Scott45 min
Mar 27, 6:34 PM CDTSpecial Weather StatementMRXHancock41 min
Mar 27, 6:36 PM CDTSpecial Weather StatementMRXMeigs39 min
Mar 27, 6:40 PM CDTSpecial Weather StatementMRXCampbell, Scott50 min
Mar 27, 6:52 PM CDTSpecial Weather StatementMRXCampbell53 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.