A shortwave tracking through the area in an unstable environment triggered scattered thunderstorms during the early morning hours. Most of the storm reports contained damaging thunderstorm winds, but an EF 0 tornado was reported.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MRX wrote it up.
A shortwave tracking through the area in an unstable environment triggered scattered thunderstorms during the early morning hours. Most of the storm reports contained damaging thunderstorm winds, but an EF 0 tornado was reported.
The local office's own words before the first event, 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 the first event at Oct 25, 1:57 AM EST, 16 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 257 AM EDT MON OCT 25 2010 .SHORT TERM (TODAY AND TONIGHT)...SURFACE HIGH PRESSURE WEAKENS OVER THE AREA WITH INCREASING SOUTHWESTERLY FLOW THROUGH THE PERIOD. MODERATELY STRONG LOW LEVEL SOUTHERLY JET CURRENTLY MOVING INTO MRX CWA. WIDESPREAD CONVECTION HAD DEVELOPED EAST OF APPROACHING SHORT WAVE CURRENTLY MOVING INTO LOWER MS RVR VLY. NE MOVING JET SEGMENT EAST OF APPROACHING TROF HAS AIDED IN CONVECTIVE DEVELOPMENT OVERNIGHT. THIS SEGMENT SHOULD WEAKEN AS IT CONTINUES OFF TO THE NE EARLY TODAY. ANOTHER DEVELOPING JET SEGMENT WILL TAKE SHAPE OVER MS/AL AND MOVES INTO GA TODAY. THIS WILL SUPPLY ONGOING LIFT AND A FAVORABLE SHEAR PROFILE FOR CONTINUED CONVECTION ACROSS THE AREA THROUGH MID DAY. DAMPENING SHORT WAVE AXIS WILL MOVE THROUGH THIS AFTERNOON AND PCPN WILL TAPER OFF. SLIGHT CHANCE OF CONVECTION TONIGHT WITH CONVERGENT SWRLY FLOW IN ADVANCE OF APPROACHING FRONT. ABOVE NORMAL TEMPERATURES CONTINUE. .LONG TERM (MONDAY NIGHT THROUGH SUNDAY)...MODELS/SREF IN REASONABLY GOOD AGREEMENT REGARDING NEXT SYSTEM WHICH APPROACHES LATE TUESDAY. HAVE BUMPED UP POPS TO LIKELY FOR THE TUESDAY NIGHT PERIOD. STILL SOME DISCREPANCIES ON HOW FAST THIS SYSTEM DEPARTS...THUS HAVE NOT MADE ANY MAJOR CHANGES FOR THE WEDNESDAY THROUGH THURSDAY PERIODS. REMAINDER OF FORECAST APPEARS GENERALLY DRY AT THIS TIME ALTHOUGH RATHER PROFOUND DIFFERENCES IN UPPER FLOW NOTED BETWEEN GFS AND ECMWF MODELS WITH GFS DEPICTING A LOW AMPLITUDE RIDGE BUILDING INTO THE REGION BY NEXT WEEKEND WHILE THE ECMWF KEEPS THE REGION IN NORTHWESTERLY FLOW ALOFT ON THE BACKSIDE OF A PERSISTENT TROUGH OVER THE NORTHEAST. GEFS ENSEMBLES TEND TO SUPPORT THE GFS SOLUTION...SO TRENDED TOWARD ITS SOLUTION AND THE ASSOCIATED MEX GUIDANCE ESPECIALLY WITH RESPECT TO TEMPS. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 77 64 80 62 78 / 100 20 50 70 30 KNOXVILLE AIRPORT, TN 75 60 79 60 77 / 100 20 50 70 30 OAK RIDGE, TN 75 59 78 58 77 / 100 10 50 70 30 TRI CITIES AIRPORT, TN 72 53 77 56 77 / 90 10 40 70 30 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && SON/MJB
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 221 AM EDT MON OCT 25 2010 TNZ081-098-099-250700- HAMILTON TN-MARION TN-SEQUATCHIE TN- 121 AM CDT MON OCT 25 2010 ...SIGNIFICANT WEATHER ADVISORY FOR MARION...HAMILTON AND SEQUATCHIE COUNTIES UNTIL 200 AM CDT/300 AM EDT/... AT 112 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES WEST OF DUNLAP TO 14 MILES SOUTHWEST OF BRIDGEPORT...AND MOVING NORTHEAST AT 45 MPH. SMALL HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...CHATTANOOGA... SIGNAL MOUNTAIN...SODDY-DAISY...HARRISON...POWELLS CROSSROADS... HALETOWN (GUILD)...LONE OAK...SALE CREEK...RED BANK...MIDDLE VALLEY...SHADY GROVE...BIRCHWOOD...EAST BRAINERD...OOLTEWAH AND COLLEGEDALE. 17
The Northeast Alabama radar (KHTX), 113 km away, was scanning. The volume nearest the first event began at 07:13 UTC.
17 thunderstorm wind, 1 tornado. Local standard time, as filed.
Law enforcement personnel reported numerous trees and traffic lights downed by thunderstorm winds in Cleveland.
Law enforcement personnel reported numerous trees and powerlines downed by thunderstorm winds countywide.
The NWS storm survey indicated an EF 0 tornado with a path length of one-tenth of a mile and a width of 40 yards. A roof and siding were damaged on the Harrison First Baptist Church in Harrison as well several trees twisted and snapped in the same area.
Law enforcement personnel reported trees and powerlines downed by thunderstorm winds near Central High School in Harrison and along Highway 58.
Amateur radio personnel reported trees and traffic lights downed by thunderstorm winds in Cleveland and across numerous areas of the county.
Law enforcement personnel reported numerous trees and traffic lights downed by thunderstorm wind across 7 area roads in and around Cleveland. Amateur radio personnel reported a 51 knot wind near Interstate 75 in Cleveland.
Law enforcement personnel reported trees downed by thunderstorm winds on Blackburn...Blythe...Linda...Lebanon Roads and Benton Pike in Cleveland.
Amateur radio personnel reported 1 large tree with a 3 foot diameter downed by thunderstorm winds in Persia.
Amateur radio personnel reported two road signs damaged by thunderstorm winds near Baileyton.
Emergency management personnel reported multiple trees downed by thunderstorm winds and several mobile homes damaged across the county.
Law enforcement personnel reported numerous trees downed by thunderstorm winds northeast of Unicoi along Sciota Road.
The Erwin Valley Beautiful Beacon newspaper reported many trees downed by thunderstorm winds across the county.
The Bristol Herald Courier newspaper reported campers were damaged by thunderstorm winds at the Water's Edge campground in Bristol.
The Elizabethton Star newspaper reported numerous trees and powerlines downed by thunderstorm winds across the county. In addition many homes... businesses... schools... and vehicles were also damaged by the wind.
Law enforcement personnel reported trees and powerlines downed by thunderstorm wind on Hickory Tree Road and Egypt Road near Bluff City.
Johnson City Power Board reported that 19 utility poles and numerous power lines and trees were downed due to thunderstorm winds.
Coop observer reported numerous trees downed by thunderstorm winds in the Johnson City County Club area.
The Johnson City Press newspaper reported numerous trees downed by thunderstorm winds in Johnson City and across the remainder of the county. Many homes...buildings and businesses were also damaged by the wind.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2010Every state in 2010This day in weather historyThe tornado archive for Tennessee, 2010Warnings in Tennessee, October 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 260047, 260048, 260049, 260050, 260051, 260052, 260053, 260055, 260057, 260058, 260060, 265669, 260062, 265668, 265749, 269633, 260063, 265667.