Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 43, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at May 3, 2021, 2:15 PM EDT for Cocke County, Greene County, Tennessee. It was in force for 37 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 3, 2021, 2:15 PM EDT (18:15 UTC)
- Expired
- May 3, 2021, 2:52 PM EDT
- In force
- 37 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cocke County, TN, Greene County, TN
The radar
The Knoxville radar (KMRX), 43 km from the middle of the area, began a volume at 18:14 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 |
|---|---|---|---|
| May 3, 2:25 PM EDT | TSTM WND DMG | 4 Sw Greeneville, TN | COUPLE TREES DOWN ALONG WARRENSBURG ROAD. |
| May 3, 2:37 PM EDT | HAIL 0.5 | Greeneville, TN | REPORT FROM MPING: HALF-INCH (0.50 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, 6.3 hours before the alert went out and 273 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
- 631 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 538 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 162 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.8
The text
As transmitted.
100
WUUS54 KMRX 031815
SVRMRX
TNC029-059-031915-
/O.NEW.KMRX.SV.W.0043.210503T1815Z-210503T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
215 PM EDT Mon May 3 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Northern Cocke County in east Tennessee...
Greene County in east Tennessee...
* Until 315 PM EDT.
* At 214 PM EDT, a severe thunderstorm was located 8 miles east of
White Pine, or 9 miles southeast of Morristown, moving east at
45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Greeneville, Tusculum, Parrottsville, Mosheim, Caney Branch, Bybee,
Chucky, Cedar Creek, Camp Creek and Davy Crockett Birthplace.
This includes Interstate 81 in Tennessee between mile markers 18 and
20.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3604 8260 3607 8264 3600 8278 3597 8278
3592 8282 3595 8285 3595 8290 3593 8290
3603 8326 3609 8324 3608 8323 3613 8324
3613 8322 3615 8323 3613 8318 3617 8319
3621 8312 3622 8264 3615 8265 3608 8258
TIME...MOT...LOC 1814Z 273DEG 33KT 3612 8315
HAIL...0.75IN
WIND...60MPH
$$
CDG2 follow-up statements
669
WWUS54 KMRX 031838
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
238 PM EDT Mon May 3 2021
TNC029-031848-
/O.CAN.KMRX.SV.W.0043.000000T0000Z-210503T1915Z/
Cocke TN-
238 PM EDT Mon May 3 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN COCKE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3604 8260 3607 8264 3600 8278 3600 8280
3599 8282 3599 8285 3601 8291 3606 8299
3613 8302 3617 8301 3621 8302 3622 8264
3615 8265 3608 8258
TIME...MOT...LOC 1838Z 273DEG 33KT 3611 8287
$$
TNC059-031915-
/O.CON.KMRX.SV.W.0043.000000T0000Z-210503T1915Z/
Greene TN-
238 PM EDT Mon May 3 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR CENTRAL GREENE COUNTY...
At 238 PM EDT, a severe thunderstorm was located near Greeneville,
moving east at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Greeneville, Tusculum, Mosheim, Chucky, Cedar Creek, Camp Creek and
Davy Crockett Birthplace.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3604 8260 3607 8264 3600 8278 3600 8280
3599 8282 3599 8285 3601 8291 3606 8299
3613 8302 3617 8301 3621 8302 3622 8264
3615 8265 3608 8258
TIME...MOT...LOC 1838Z 273DEG 33KT 3611 8287
HAIL...0.75IN
WIND...60MPH
$$
SR740
WWUS54 KMRX 031852
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
252 PM EDT Mon May 3 2021
TNC059-031902-
/O.CAN.KMRX.SV.W.0043.000000T0000Z-210503T1915Z/
Greene TN-
252 PM EDT Mon May 3 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GREENE COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 3604 8260 3607 8264 3600 8278 3600 8280
3599 8282 3599 8285 3601 8291 3606 8299
3613 8302 3617 8301 3621 8302 3622 8264
3615 8265 3608 8258
TIME...MOT...LOC 1848Z 273DEG 33KT 3610 8271
$$
SRThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 9:04 PM EDT | Wind Advisory | MRX | Blount, Cocke, Greene, Monroe, Sevier | 13 hr |
| May 3, 1:02 PM EDT | Special Weather Statement | MRX | Knox | 43 min |
| May 3, 1:37 PM EDT | Special Weather Statement | MRX | Grainger, Hamblen, Jefferson, Knox | 38 min |
| May 3, 2:10 PM EDT | Special Weather Statement | MRX | Greene, Washington | 65 min |
| May 3, 4:04 PM EDT | Special Weather Statement | MRX | Sevier | 41 min |
| May 3, 4:19 PM EDT | Special Weather Statement | MRX | Blount, Sevier | 41 min |
| May 3, 4:34 PM EDT | Special Weather Statement | MRX | Cocke | 41 min |
| May 3, 6:43 PM EDT | Special Weather Statement | MRX | Knox | 47 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.