Scattered large hail and damaging wind occurred along and ahead of a weak cold front that was moving into east and southeast Tennessee.
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.
Scattered large hail and damaging wind occurred along and ahead of a weak cold front that was moving into east and southeast Tennessee.
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 May 28, 1:00 PM EST, 10 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 200 PM EDT FRI MAY 28 2010 .AVIATION...THROUGH MUCH OF THE TAF PERIOD...SITES WILL SEE VFR CONDITIONS. HOWEVER...SHOWERS AND THUNDERSTORMS HAVE DEVELOPED OVER THE AREA...AND WILL LIKELY OCCASIONALLY AFFECT THE TAF SITES. WILL CONTINUE MENTION OF VCTS WITH TS AS NEEDED...ANY STORM THAT CROSS AN AIRPORT COULD PRODUCE MVFR TO IFR CONDITIONS. MOST OF THE STORMS SHOULD DISSIPATE WITH SUNSET. GIVEN THE LIKELIHOOD OF RAIN...WILL INCLUDE A MENTION OF MVFR FOG LATE TONIGHT. && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && MJB
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 850 AM EDT FRI MAY 28 2010 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-291000- 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-NW 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-RUSSELL-WASHINGTON- 850 AM EDT (750 AM CDT) FRI MAY 28 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT AN UPPER LEVEL DISTURBANCE WILL HELP TO TRIGGER NUMEROUS SHOWERS AND THUNDERSTORMS TODAY...WITH SOME STORMS BECOMING STRONG TO SEVERE THIS AFTERNOON AND EVENING. THE MAIN THREATS WITH THESE STORMS WILL BE DAMAGING WINDS...LARGE HAIL...AND CLOUD TO GROUND LIGHTNING. IN ADDITION...LOCALLY HEAVY RAINFALL WILL BE POSSIBLE DUE TO THE EXPECTED SLOW MOVEMENT OF THESE STORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP EACH AFTERNOON AND EVENING THROUGH NEXT WEEK...WITH A FEW ISOLATED STORMS POSSIBLY BECOMING SEVERE EACH DAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. DMG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 137 PM EDT FRI MAY 28 2010 NCZ060-061-TNZ039>042-070>074-085>087-099>102-281815- BLOUNT SMOKY MOUNTAINS TN-BRADLEY TN-CHEROKEE NC-CLAY NC-COCKE SMOKY MOUNTAINS TN-EAST POLK TN-HAMBLEN TN-HAMILTON TN-JEFFERSON TN-MCMINN TN-NORTH SEVIER TN-NORTHWEST COCKE TN-NORTHWEST GREENE TN-NORTHWEST MONROE TN-NW BLOUNT TN-SEVIER SMOKY MOUNTAINS TN-SOUTHEAST MONROE TN-WEST POLK TN- 137 PM EDT FRI MAY 28 2010 ...SIGNIFICANT WEATHER ADVISORY FOR POLK...MONROE...EXTREME WESTERN GREENE...SEVIER...COCKE...BLOUNT...JEFFERSON...BRADLEY...EXTREME SOUTHERN HAMILTON...MCMINN...HAMBLEN...CLAY AND CHEROKEE COUNTIES UNTIL 215 PM EDT... AT 128 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM WATERVILLE TO MCCAYSVILLE...AND MOVING NORTH AT 5 MPH. PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...DUCKTOWN... GATLINBURG...NEWPORT...BENTON...SEVIERVILLE...DANDRIDGE... PARROTTSVILLE...PIGEON FORGE...WHITE PINE...ETOWAH...ROUND MOUNTAIN...HIAWASSE DAM...HARTFORD...UNAKA...VIOLET...COSBY...DEL RIO...TURTLETOWN...PITTMAN CENTER AND ELKMONT. 17
The Knoxville radar (KMRX), 85 km away, was scanning. The volume nearest the first event began at 18:09 UTC.
9 hail, 6 thunderstorm wind, 1 flash flood. Local standard time, as filed.
A few trees and power lines were blown down by thunderstorm winds.
Several trees were blown down by thunderstorm winds.
Quarter size hail was reported.
Several trees were blown down by thunderstorm winds near highway 411.
Twelve to 18 inches of water was reported to be flowing over curbs and into several streets.
Quarter size hail was reported.
A few trees and power lines were blown down by thunderstorm winds.
Quarter size hail was reported.
Golf ball size hail was reported at the intersection of highways 11 and 30.
Nickel size hail was reported along interstate 75.
A measured wind gust of 58 mph was reported.
Quarter size hail was reported.
Nickel size hail was reported.
Quarter size hail was reported.
Quarter size hail was reported.
An estimated 60 mph wind gust was reported near the intersection of Highway 33 and Satterfield road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2010Every state in 2010This day in weather historyWarnings in Tennessee, May 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 2026-09-24. Each event’s entry at NCEI: 223278, 223280, 223281, 223282, 223286, 223287, 223290, 223291, 223292, 223297, 223300, 223301, 223302, 223303, 223304, 223305.