Alert archive / Tennessee / Flash Flood Warnings in 2026
Flash Flood Warning 14, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at May 30, 2026, 9:28 AM EDT for Blount County, Loudon County, Tennessee. It was in force for 3 hr. 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 30, 2026, 9:28 AM EDT (13:28 UTC)
- Expired
- May 30, 2026, 12:14 PM EDT
- In force
- 3 hr
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Blount County, TN, Loudon County, TN
The radar
The Knoxville radar (KMRX), 82 km from the middle of the area, began a volume at 13:28 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
Nashville Metro, TN (KBNA), launched 12:00Z, 1.5 hours before the alert went out and 228 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
- 570 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 632 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at May 30, 6:46 AM EDT, 2 hours 42 minutes earlier. Its key messages:
- Updated at 641 AM EDT Sat May 30 2026
- Periods of showers/storms continue through Saturday morning, some of which may produce heavy rainfall and flooding.
- A drier weather pattern develops next week.
Area forecast discussion, May 30, 6:46 AM EDT, 2 hours 42 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Morristown TN
646 AM EDT Sat May 30 2026
...New AVIATION...
.KEY MESSAGES...
Updated at 641 AM EDT Sat May 30 2026
- Periods of showers/storms continue through Saturday morning,
some of which may produce heavy rainfall and flooding.
- A drier weather pattern develops next week.
&&
.DISCUSSION...
Issued at 124 AM EDT Sat May 30 2026
Water vapor imagery shows a mid/upper low spinning over Middle/West
TN, with a negatively-tilted trough extending SE across AL/GA.
This is producing upper divergence over East TN, which will
maintain convective activity through the night in a moist air mass
of PW values near 2 inches. The HRRR shows showers and storms
increasing in coverage and intensity later tonight, around 09Z in
the northern and central TN Valley, between TYS and TRI. Rain
rates of 1-3 inches per hour will be possible where storms move
slowly or train over the same locations. Flash flooding will
continue to be a concern, especially for areas that had heavy rain
this afternoon, such as Blount/Sevier counties and
Morgan/Scott/Campbell counties. The Flood Watch will continue.
Through Saturday morning, precip will shift southward as the large
closed low over New England moves south and establishes a NW flow
across the region. This will bring drier air into the area that will
keep dry conditions into Sunday. Chance PoPs return late Sunday with
a weak shortwave trough in the NW flow. Another disturbance in the
NW flow and a southward-moving cold front brings better rain chances
on Monday.
Drier air and high pressure will move in behind the front, setting
up a drier period for Tuesday through at least Thursday, along with
temperatures near seasonal normals. Rain chances may tick back up
by Friday as moisture begins to increase again.
&&
.AVIATION...
(12Z TAFS)
Issued at 641 AM EDT Sat May 30 2026
Widespread SHRA/TSRA continue across East Tennessee this morning
along a stationary front that will shift south through the morning
and early afternoon hours. KTRI may already be on the northern
edge of the activity expected the rest of the day so have them out
of the rain by 15z. It will be a few hours later before rain
shifts south of KTYS, and between 20z and 00z before SHRA move
back to KCHA and points south. Categories will be a mixed back
in/around rainfall, then VFR after SHRA wrap up. Not expecting fog
or low clouds tonight due to dry northerly surface flow.
&&
.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN 84 66 80 64 / 70 10 40 50
Knoxville McGhee Tyson Airport, TN 81 61 82 63 / 80 10 50 60
Oak Ridge, TN 81 60 81 63 / 70 0 50 60
Tri Cities Airport, TN 83 56 82 60 / 40 0 10 70
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...Flood Watch until 2 PM EDT this afternoon for Cherokee-Clay.
TN...Flood Watch until 2 PM EDT /1 PM CDT/ this afternoon for
Anderson-Bledsoe-Blount Smoky Mountains-Bradley-Campbell-
Claiborne-Cocke Smoky Mountains-East Polk-Grainger-Hamblen-
Hamilton-Hancock-Hawkins-Jefferson-Knox-Loudon-Marion-
McMinn-Meigs-Morgan-North Sevier-Northwest Blount-Northwest
Cocke-Northwest Greene-Northwest Monroe-Rhea-Roane-Scott TN-
Sequatchie-Sevier Smoky Mountains-Southeast Greene-
Southeast Monroe-Unicoi-Union-Washington TN-West Polk.
VA...NONE.
&&
DISCUSSION...CD
AVIATION...CDHazardous weather outlook, May 30, 4:14 AM EDT, 5 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Morristown TN 414 AM EDT Sat May 30 2026 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-310815- 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- 414 AM EDT Sat May 30 2026 /314 AM CDT Sat May 30 2026/ This Hazardous Weather Outlook is for portions of southwest North Carolina...east Tennessee and southwest Virginia. .DAY ONE...Today and Tonight The threat of very heavy rainfall rates and isolated flash flooding will continue through this afternoon, then diminish later today. .DAYS TWO THROUGH SEVEN...Sunday through Friday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not needed at this time. However any reports of flooding would be appreciated.
In the hours before
Local storm report, May 30, 3:51 AM EDT, 5 hours 37 minutes before
Preliminary Local Storm Report
National Weather Service Morristown TN
351 AM EDT Sat May 30 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0340 AM Flash Flood 3 SW Liberty 36.11N 82.66W
05/30/2026 Greene TN Emergency Mngr
Emergency management reported flash flooding
was ongoing in the Horse Creek Recreation
area and that people were being evacuated.
&&
CEDLocal storm report, May 30, 6:50 AM EDT, 2 hours 38 minutes before
Preliminary Local Storm Report
National Weather Service Morristown TN
650 AM EDT Sat May 30 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0619 AM Flash Flood 1 W Athens 35.45N 84.62W
05/30/2026 McMinn TN Public
Water over Highway 11 just north of Decatur
Pike in Athens TN. Report from social media.
&&
CEDLocal storm report, May 30, 7:39 AM EDT, 1 hour 49 minutes before
Preliminary Local Storm Report
National Weather Service Morristown TN
739 AM EDT Sat May 30 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 AM Flash Flood 3 SW Heiskell 36.05N 84.08W
05/30/2026 Anderson TN 911 Call Center
Tillery Rd Closed.
&&Local storm report, May 30, 7:41 AM EDT, 1 hour 47 minutes before
Preliminary Local Storm Report
National Weather Service Morristown TN
741 AM EDT Sat May 30 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0712 AM Flash Flood 2 E Oliver Springs 36.03N 84.30W
05/30/2026 Anderson TN 911 Call Center
Airport Road Closed.
&&Local storm report, May 30, 7:44 AM EDT, 1 hour 44 minutes before
Preliminary Local Storm Report
National Weather Service Morristown TN
744 AM EDT Sat May 30 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 AM Flash Flood 2 NNE Rosedale 36.19N 84.33W
05/30/2026 Anderson TN 911 Call Center
77 Block New River Highway Closed.
&&The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 8:59 PM EDT | Flash Flood Warning | MRX | Blount | 4 hr |
| May 30, 2:06 AM EDT | Areal Flood Advisory | MRX | Greene, Unicoi, Washington | 3 hr |
| May 30, 3:46 AM EDT | Flash Flood Warning | MRX | Greene | 6 hr |
| May 30, 4:09 AM EDT | Areal Flood Advisory | MRX | Anderson, Morgan | 3 hr |
| May 30, 4:25 AM EDT | Flash Flood Warning | MRX | Anderson, Morgan | 6 hr |
| May 30, 5:08 AM EDT | Flash Flood Warning | MRX | Anderson, Campbell, Morgan, Scott | 7 hr |
| May 30, 5:49 AM EDT | Flash Flood Warning | MRX | McMinn | 4 hr |
| May 30, 6:04 AM EDT | Areal Flood Advisory | MRX | Knox | 6 hr |
| May 30, 6:49 AM EDT | Areal Flood Advisory | MRX | Campbell, Morgan, Scott | 5 hr |
| May 30, 6:51 AM EDT | Areal Flood Advisory | MRX | Cocke, Jefferson, Sevier | 6 hr |
| May 30, 6:56 AM EDT | Areal Flood Advisory | MRX | Blount, Loudon | 3 hr |
| May 30, 7:58 AM EDT | Areal Flood Advisory | MRX | Blount | 6 hr |
| May 30, 8:25 AM EDT | Areal Flood Advisory | MRX | Anderson, Blount, Knox, Loudon, Roane | 3 hr |
| May 30, 8:49 AM EDT | Flash Flood Warning | MRX | Morgan | 4 hr |
| May 30, 10:03 AM EDT | Areal Flood Advisory | MRX | Blount, Loudon, Monroe | 3 hr |
| May 30, 10:06 AM EDT | Areal Flood Advisory | MRX | Anderson, Morgan | 3 hr |
| May 30, 10:10 AM EDT | Areal Flood Advisory | MRX | McMinn | 3 hr |
| May 30, 12:14 PM EDT | Areal Flood Advisory | MRX | Blount, Loudon | 76 min |
Nearby
Flash Flood Warnings in Tennessee, 2026Every flash flood warning in 2026
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.