Alert archive / Tennessee / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 37, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Mar 31, 2025, 6:34 AM EDT for Carter County, Johnson County, Sullivan County, Tennessee; Washington County, Virginia. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 31, 2025, 6:34 AM EDT (10:34 UTC)
- Expired
- Mar 31, 2025, 7:00 AM EDT
- In force
- 26 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Carter County, TN, Johnson County, TN, Sullivan County, TN, Washington County, VA
The radar
The Knoxville radar (KMRX), 126 km from the middle of the area, began a volume at 10:37 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 nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 10.6 hours before the alert went out and 241 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
- 1 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1352 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 31, 3:54 AM EDT, 2 hours 40 minutes earlier.
Area forecast discussion, Mar 31, 3:54 AM EDT, 2 hours 40 minutes before
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</html>Hazardous weather outlook, Mar 31, 2:21 AM EDT, 4 hours 13 minutes before
Hazardous Weather Outlook National Weather Service Morristown TN 221 AM EDT Mon Mar 31 2025 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-010630- Cherokee-Clay-Scott TN-Campbell-Claiborne-Hancock-Hawkins- Sullivan-Johnson-Morgan-Anderson-Union-Grainger-Hamblen- Northwest Cocke-Cocke Smoky Mountains-Northwest Greene- Southeast Greene-Washington TN-Unicoi-Northwest Carter- Southeast Carter-Roane-Loudon-Knox-Jefferson-Northwest Blount- Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains- Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe- Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk-Lee- Wise-Scott VA-Russell-Washington VA- 221 AM EDT Mon Mar 31 2025 /121 AM CDT Mon Mar 31 2025/ This Hazardous Weather Outlook is for portions of southwest North Carolina...east Tennessee and southwest Virginia. .DAY ONE...Today and Tonight A Tornado Watch has been issued for most Tennessee counties, excluding parts of NE Tennessee. A Severe Thunderstorm watch has been issued for Lee, Scott and Wise counties in SW Virginia. Severe and tornado threat will decrease by mid morning. Storms will move across the area this morning. Some storms could be strong to severe, with the potential for damaging winds and large hail and a low chance of tornadoes. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Strong and gusty winds are expected across much of the area for Wednesday and Thursday especially across the far east Tennessee mountains and foothills. Across the mountains and foothills, southerly winds of 20 to 30 mph with gusts up to 45 mph are expected. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight and Monday.
In the hours before
Special weather statement, Mar 31, 4:13 AM EDT, 2 hours 21 minutes before
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</html>The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 2:49 AM EDT | Severe Thunderstorm Warning | MRX | Bledsoe | 41 min |
| Mar 31, 2:53 AM EDT | Special Weather Statement | MRX | Campbell, Scott | 52 min |
| Mar 31, 3:15 AM EDT | Severe Thunderstorm Warning | MRX | Rhea, Roane | 30 min |
| Mar 31, 3:35 AM EDT | Special Weather Statement | MRX | Anderson, Loudon, Morgan, Roane | 40 min |
| Mar 31, 4:09 AM EDT | Special Weather Statement | MRX | Blount, Knox, Loudon | 51 min |
| Mar 31, 4:13 AM EDT | Special Weather Statement | MRX | Bledsoe, Meigs, Rhea, Sequatchie | 47 min |
| Mar 31, 4:53 AM EDT | Special Weather Statement | MRX | Jefferson, Sevier | 52 min |
| Mar 31, 5:53 AM EDT | Special Weather Statement | MRX | Bradley, Hamilton | 52 min |
| Mar 31, 6:14 AM EDT | Special Weather Statement | MRX | Johnson | 46 min |
| Mar 31, 6:15 AM EDT | Special Weather Statement | MRX | Polk | 45 min |
| Mar 31, 6:30 AM EDT | Special Weather Statement | MRX | Polk | 45 min |
| Mar 31, 8:53 AM EDT | Special Weather Statement | MRX | Marion | 67 min |
| Mar 31, 9:56 AM EDT | Special Weather Statement | MRX | Hamilton | 34 min |
| Mar 31, 11:02 AM EDT | Special Weather Statement | MRX | Bradley, McMinn | 43 min |
| Mar 31, 2:21 AM EDT | Severe Thunderstorm Warning | MRX | Wise, City of Norton | 39 min |
| Mar 31, 2:43 AM EDT | Special Weather Statement | MRX | Lee, Scott | 47 min |
| Mar 31, 2:58 AM EDT | Special Weather Statement | MRX | Russell, Wise, City of Norton | 32 min |
| Mar 31, 3:06 AM EDT | Severe Thunderstorm Warning | MRX | Russell | 24 min |
| Mar 31, 3:35 AM EDT | Special Weather Statement | MRX | City of Bristol | 40 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2025Severe Thunderstorm Warnings in Virginia, 2025Every severe thunderstorm warning in 2025
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.