Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 17, NWS Morristown, TN

March 27, 2021Greene County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Mar 27, 2021, 10:33 AM EDT for Greene County, Tennessee. It was in force for 42 min. 3 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: Mar 27, 2021, 10:33 AM EDT (14:33 UTC)
Expired: Mar 27, 2021, 11:15 AM EDT
In force: 42 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Greene County, TN

The radar

The Knoxville radar (KMRX), 43 km from the middle of the area, began a volume at 14:33 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

Time	Report	Where	Remark
Mar 27, 10:46 AM EDT	HAIL 0.75	2 Sw Midway, TN	REPORT FROM MPING: DIME (0.75 IN.).
Mar 27, 10:53 AM EDT	HAIL 0.75	3 W Greeneville, TN	REPORT FROM MPING: DIME (0.75 IN.).
Mar 27, 10:55 AM EDT	HAIL 1.25	1 E Greeneville, TN	REPORT FROM MPING: HALF DOLLAR (1.25 IN.).

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

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 2.6 hours before the alert went out and 271 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2434 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

084 
WUUS54 KMRX 271433
SVRMRX
TNC059-271515-
/O.NEW.KMRX.SV.W.0017.210327T1433Z-210327T1515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
1033 AM EDT Sat Mar 27 2021

The National Weather Service in Morristown has issued a

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

* Until 1115 AM EDT.

* At 1033 AM EDT, a severe thunderstorm was located near
  Parrottsville, or 9 miles north of Newport, moving east at 45 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Greeneville, Tusculum, Mosheim, Caney Branch, Chucky, Camp Creek,
  Davy Crockett Birthplace, Mohawk and Fall Branch.

This includes Interstate 81 in Tennessee between mile markers 42 and
49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3618 8265 3615 8265 3612 8262 3603 8299
      3609 8306 3609 8307 3612 8310 3611 8312
      3612 8312 3612 8313 3615 8317 3641 8263
TIME...MOT...LOC 1433Z 248DEG 39KT 3610 8315 

HAIL...1.00IN
WIND...<50MPH
 
$$

Garuckas

2 follow-up statements

412 
WWUS54 KMRX 271453
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
1053 AM EDT Sat Mar 27 2021

TNC059-271515-
/O.CON.KMRX.SV.W.0017.000000T0000Z-210327T1515Z/
Greene TN-
1053 AM EDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT
FOR CENTRAL GREENE COUNTY...

At 1052 AM EDT, a severe thunderstorm was located over Greeneville,
moving east at 55 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Greeneville, Tusculum, Mosheim, Baileyton, Chucky, Davy Crockett
Birthplace and Fall Branch.

This includes Interstate 81 in Tennessee between mile markers 42 and
49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3609 8292 3623 8299 3627 8293 3641 8263
      3618 8265 3615 8265 3614 8264
TIME...MOT...LOC 1452Z 248DEG 46KT 3618 8285 

HAIL...1.00IN
WIND...<50MPH
 
$$

Garuckas

683 
WWUS54 KMRX 271500
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
1100 AM EDT Sat Mar 27 2021

TNC059-271515-
/O.CON.KMRX.SV.W.0017.000000T0000Z-210327T1515Z/
Greene TN-
1100 AM EDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT
FOR NORTHEASTERN GREENE COUNTY...

At 1059 AM EDT, a severe thunderstorm was located over Tusculum, or
near Greeneville, moving east at 40 mph.

HAZARD...Half dollar size hail.

SOURCE...Public.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Greeneville, Tusculum, Baileyton, Davy Crockett Birthplace, Chucky
and Fall Branch.

This includes Interstate 81 in Tennessee between mile markers 42 and
49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3610 8287 3627 8289 3631 8284 3641 8263
      3618 8265 3615 8265 3614 8264
TIME...MOT...LOC 1459Z 251DEG 37KT 3618 8277 

HAIL...1.25IN
WIND...<50MPH
 
$$

Garuckas

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 5:03 AM EDT	Special Weather Statement	MRX	Marion, Sequatchie	42 min
Mar 27, 5:23 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Hamilton, Marion, Sequatchie	39 min
Mar 27, 5:47 AM EDT	Special Weather Statement	MRX	Hamilton	43 min
Mar 27, 6:08 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton	52 min
Mar 27, 6:41 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	49 min
Mar 27, 7:46 AM EDT	Special Weather Statement	MRX	Roane	44 min
Mar 27, 7:58 AM EDT	Severe Thunderstorm Warning	MRX	Morgan	47 min
Mar 27, 8:27 AM EDT	Special Weather Statement	MRX	Scott	48 min
Mar 27, 8:37 AM EDT	Special Weather Statement	MRX	Knox	38 min
Mar 27, 8:42 AM EDT	Severe Thunderstorm Warning	MRX	Scott	26 min
Mar 27, 8:58 AM EDT	Special Weather Statement	MRX	Knox, Loudon	47 min
Mar 27, 9:18 AM EDT	Severe Thunderstorm Warning	MRX	Grainger, Knox, Union	42 min
Mar 27, 9:39 AM EDT	Severe Thunderstorm Warning	MRX	Knox, Sevier	30 min
Mar 27, 9:43 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hancock, Hawkins	47 min
Mar 27, 10:00 AM EDT	Severe Thunderstorm Warning	MRX	Cocke, Hamblen, Jefferson	45 min
Mar 27, 10:06 AM EDT	Severe Thunderstorm Warning	MRX	Campbell, Scott	54 min
Mar 27, 10:14 AM EDT	Special Weather Statement	MRX	Anderson, Campbell, Morgan, Scott	46 min
Mar 27, 10:30 AM EDT	Special Weather Statement	MRX	Hawkins	45 min
Mar 27, 10:33 AM EDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne	42 min
Mar 27, 10:36 AM EDT	Flash Flood Warning	MRX	Morgan, Scott	4 hr
Mar 27, 10:41 AM EDT	Severe Thunderstorm Warning	MRX	Hawkins	49 min
Mar 27, 10:51 AM EDT	Special Weather Statement	MRX	Anderson, Morgan	39 min
Mar 27, 11:00 AM EDT	Special Weather Statement	MRX	Claiborne	45 min
Mar 27, 11:07 AM EDT	Severe Thunderstorm Warning	MRX	Sullivan	38 min
Mar 27, 11:11 AM EDT	Severe Thunderstorm Warning	MRX	Unicoi, Washington	35 min
Mar 27, 11:20 AM EDT	Special Weather Statement	MRX	Grainger, Hamblen, Union	40 min
Mar 27, 11:30 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock	22 min
Mar 27, 11:32 AM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Sullivan, Unicoi, Washington	43 min
Mar 27, 11:45 AM EDT	Areal Flood Advisory	MRX	Hawkins, Sullivan	3 hr
Mar 27, 11:46 AM EDT	Special Weather Statement	MRX	Hamblen, Jefferson	44 min
Mar 27, 11:48 AM EDT	Areal Flood Advisory	MRX	Campbell, Claiborne	3 hr
Mar 27, 11:50 AM EDT	Areal Flood Advisory	MRX	Carter, Greene, Washington	3 hr
Mar 27, 11:56 AM EDT	Special Weather Statement	MRX	Monroe	49 min
Mar 27, 12:07 PM EDT	Areal Flood Advisory	MRX	Anderson, Knox	3 hr
Mar 27, 12:12 PM EDT	Areal Flood Advisory	MRX	Claiborne, Hancock	3 hr
Mar 27, 12:17 PM EDT	Special Weather Statement	MRX	Johnson	43 min
Mar 27, 12:23 PM EDT	Special Weather Statement	MRX	Hawkins	52 min
Mar 27, 1:01 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Sullivan, Unicoi, Washington	44 min
Mar 27, 3:13 PM EDT	Wind Advisory	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more	23 hr
Mar 27, 3:34 PM EDT	Special Weather Statement	MRX	Campbell, Morgan	41 min
Mar 27, 5:05 PM EDT	Areal Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 27, 5:38 PM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Hancock, Hawkins, Union	3 hr
Mar 27, 5:49 PM EDT	Special Weather Statement	MRX	Anderson, Morgan	41 min
Mar 27, 6:13 PM EDT	Areal Flood Warning	MRX	Blount, Sevier	3 hr
Mar 27, 6:59 PM EDT	Special Weather Statement	MRX	Morgan, Scott	46 min
Mar 27, 7:02 PM EDT	Special Weather Statement	MRX	Marion, Sequatchie	43 min
Mar 27, 7:15 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Scott	45 min
Mar 27, 7:34 PM EDT	Special Weather Statement	MRX	Hancock	41 min
Mar 27, 7:36 PM EDT	Special Weather Statement	MRX	Meigs	39 min
Mar 27, 7:40 PM EDT	Special Weather Statement	MRX	Campbell, Scott	50 min
Mar 27, 7:43 PM EDT	Severe Thunderstorm Warning	MRX	Marion	47 min
Mar 27, 7:52 PM EDT	Special Weather Statement	MRX	Campbell	53 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021 Every 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.