Alert archive / Tennessee / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 148, NWS Morristown, TN

May 20, 20254 counties in Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 20, 2025, 6:42 PM EDT for 4 counties in Tennessee. It was in force for 48 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
May 20, 2025, 6:42 PM EDT (22:42 UTC)
Expired
May 20, 2025, 7:30 PM EDT
In force
48 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bradley County, TN, Hamilton County, TN, Meigs County, TN, Rhea County, TN

The radar

The Northeast Alabama radar (KHTX), 115 km from the middle of the area, began a volume at 22:45 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 watch it was issued in

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

IssuedProductOfficeLasted
May 20, 3:36 PM EDTTornado WatchSPC8 hr

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 May 20, 3:41 PM EDT, 3 hours 1 minute earlier.

Area forecast discussion, May 20, 3:41 PM EDT, 3 hours 1 minute before
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Hazardous weather outlook, May 20, 3:43 PM EDT, 2 hours 59 minutes before
Hazardous Weather Outlook
National Weather Service Morristown TN
343 PM EDT Tue May 20 2025

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-211945-
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-
343 PM EDT Tue May 20 2025 /243 PM CDT Tue May 20 2025/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...This Afternoon and Tonight

Severe thunderstorms are expected to continue this afternoon and
into the overnight hours ahead of a cold front. Damaging winds
will be the primary risk, but there will be a chance of large hail
and tornadoes with the strongest storms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

The probability of widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not needed at this time.

In the hours before

Local storm report, May 20, 5:42 PM EDT, 1 hour before
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Special weather statement, May 20, 5:48 PM EDT, 54 minutes before
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Special weather statement, May 20, 6:00 PM EDT, 42 minutes before
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Special weather statement, May 20, 6:09 PM EDT, 33 minutes before
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Special weather statement, May 20, 6:14 PM EDT, 28 minutes before
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Local storm report, May 20, 6:35 PM EDT, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 2:22 PM EDTSpecial Weather StatementMRXAnderson38 min
May 20, 2:27 PM EDTSpecial Weather StatementMRXCampbell, Morgan, Scott48 min
May 20, 2:37 PM EDTSevere Thunderstorm WarningMRXAnderson, Knox, Morgan, Roane53 min
May 20, 3:00 PM EDTTornado WarningMRXAnderson, Knox, Morgan, Roane45 min
May 20, 3:25 PM EDTSpecial Weather StatementMRXClaiborne, Union50 min
May 20, 3:35 PM EDTSpecial Weather StatementMRXUnion40 min
May 20, 4:20 PM EDTSpecial Weather StatementMRXHamblen40 min
May 20, 4:30 PM EDTSevere Thunderstorm WarningMRXCocke, Grainger, Greene, Hamblen, Hawkins, Jefferson45 min
May 20, 4:56 PM EDTSpecial Weather StatementMRXHawkins49 min
May 20, 4:59 PM EDTSevere Thunderstorm WarningMRXMarion, Sequatchie61 min
May 20, 5:09 PM EDTSevere Thunderstorm Warning Considerable damage threatMRXGreene, Unicoi, Washington51 min
May 20, 5:39 PM EDTSpecial Weather StatementMRXSullivan51 min
May 20, 5:48 PM EDTSpecial Weather StatementMRXCarter, Unicoi57 min
May 20, 5:56 PM EDTSevere Thunderstorm WarningMRXBledsoe, Hamilton, Marion, Sequatchie49 min
May 20, 6:00 PM EDTSpecial Weather StatementMRXCarter45 min
May 20, 6:14 PM EDTSpecial Weather StatementMRXJohnson46 min
May 20, 7:11 PM EDTSevere Thunderstorm WarningMRXMcMinn, Meigs, Monroe49 min
May 20, 7:54 PM EDTSpecial Weather StatementMRXMonroe66 min
May 20, 4:54 PM EDTSpecial Weather StatementMRXRussell, Scott, Wise, City of Norton51 min
May 20, 5:33 PM EDTSevere Thunderstorm WarningMRXRussell, Washington42 min
May 20, 6:09 PM EDTSpecial Weather StatementMRXWashington36 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 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; radar from the NEXRAD Level II archive.