Severe convection developed ahead of a surface low near the Ohio River |along the Indiana/Kentucky border with quasi-stationary frontal boundary extending east into the Mid Atlantic region. A mid level impulse and upper level cold pocket contributed to moderate instability for storm formation.
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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.
Severe convection developed ahead of a surface low near the Ohio River |along the Indiana/Kentucky border with quasi-stationary frontal boundary extending east into the Mid Atlantic region. A mid level impulse and upper level cold pocket contributed to moderate instability for storm formation. The event produced mostly damaging winds and a limited amount of hail production.
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 Jul 4, 1:37 PM EST, 3 hours 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 237 PM EDT FRI JUL 4 2008 .SHORT TERM...(TONIGHT AND SATURDAY)...COLD FRONT TO OUR NORTHWEST NOT EXPECTED TO MAKE MUCH PROGRESS TOWARD OUR AREA IN THE SHORT TERM. HOWEVER...LOOKS LIKE THERE WILL BE ENOUGH MOISTURE AND INSTABILITY ALONG WITH UPPER LEVEL SHORT WAVE THAT WILL MOVE OVER AREA TONIGHT INTO SATURDAY TO WARRANT THE LIKELY POPS THAT HAVE BEEN ADVERTISED. LOOKS LIKE BEST COVERAGE OF PRECIP MAY BE LATER TONIGHT INTO SATURDAY...BUT WILL NOT FINESSE THINGS TOO MUCH IN THE DATABASE. WILL MAKE ONLY MINOR TWEAKS TO MAV TEMPS...WHICH LOOK REASONABLE OVERALL. .LONG TERM...(SATURDAY NIGHT THROUGH FRIDAY)...UPPER TROUGH KEEPS THINGS SOMEWHAT UNSETTLED THROUGH THE BALANCE OF THE WEEKEND AND INTO EARLY NEXT WEEK AS TROUGH LINGERS BEFORE FINALLY PULLING OUT BY LATE MONDAY. TYPICAL SUMMER WEATHER PATTERN EXPECTED THROUGH THE BALANCE OF THE LONG TERM PERIOD. A SERIES OF NORTHERN STREAM SHORT WAVE TROUGHS...AND ASSOCIATED DYNAMICS...WILL STAY WELL NORTH OF THE SOUTHERN APPALACHIAN REGION. THE EUROPEAN MODEL PROJECTS ONE OF THESE SHORT WAVES WILL PUSH A SURFACE BOUNDARY INTO OUR AREA BY THURSDAY. HOWEVER...THIS IS NOT EVIDENT WITH OTHER MEDIUM RANGE MODELS AND ENSEMBLES. THUS WILL DISCOUNT FOR NOW AND CONTINUE SCATTERED MAINLY DIURNAL CONVECTION EACH DAY. FOR TEMPS...HAD NO COMPELLING REASON TO DEVIATE FROM MAV/MEX GUIDANCE AND GENERALLY STAYED CLOSE TO THOSE VALUES. && .PRELIMINARY POINT TEMPS/POPS... CHATTANOOGA AIRPORT, TN 68 85 67 89 67 / 60 60 20 30 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 67 83 65 88 66 / 60 60 20 30 20 OAK RIDGE, TN 68 83 65 89 66 / 60 60 20 30 20 TRI CITIES AIRPORT, TN 63 80 63 87 62 / 60 60 30 30 20 && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && LDW/LCM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 436 AM EDT FRI JUL 4 2008 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-050845- 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- 436 AM EDT FRI JUL 4 2008 /336 AM CDT FRI JUL 4 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORM WILL DEVELOP BY THIS AFTERNOON. A FEW OF THESE STORMS MAY BECOME STRONG PRODUCING WIND GUSTS TO 40 MPH. SMALL HAIL IS ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 313 PM EDT FRI JUL 4 2008 TNZ017-018-044-046-047-VAZ008-042000- JOHNSON-NORTHWEST CARTER-SOUTHEAST CARTER-SULLIVAN-WASHINGTON- 313 PM EDT FRI JUL 4 2008 ...STRONG THUNDERSTORMS WILL BE AFFECTING CARTER...JOHNSON...SULLIVAN AND WASHINGTON COUNTIES... AT 309 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES NORTH OF JOHNSON CITY TO 6 MILES NORTHEAST OF HAMPTON TO 9 MILES NORTHWEST OF NEWLAND...MOVING NORTHEAST AROUND 25 MPH. PEA SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE POSSIBLE WITH THESE STORMS. IN ADDITION TO SMALL HAIL AND GUSTY WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES PRIMARY KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
One tree was reported down on Highway 11W in the far southeast corner of the county near the Tennessee border.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2008Every state in 2008This day in weather historyWarnings in Virginia, July 2008
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: 122430.