Thunderstorm Wind, Knox
- When
- June 15, 1:15 PM EST
- Where
- Knox County, Centerburg
- Measured
- 50 kt (58 mph) estimated gust
- Property damage
- $10,000
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.300, -82.700
Thunderstorm winds downed several trees.
Damaging Winds in Ohio, June 15, 2004
2 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $14,000
- Crop damage
- None recorded
- Events
- 2
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.
What forecasters said that day
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 Cleveland, OH wrote its last area forecast discussion before the first event at Jun 15, 9:57 AM EST, 3 hours 18 minutes earlier.
Area forecast discussion, Jun 15, 9:57 AM EST, 3 hours 18 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE CLEVELAND OH ISSUED BY NWS BUFFALO 1057 AM EDT TUE JUN 15 2004 14Z SURFACE ANALYSIS SHOWED WEAK FRONTAL BOUNDARY NEAR AN ASHTABULA TO MANSFIELD TO MUNCIE INDIANA LINE. AIR MASS STABILIZING BEHIND BOUNDARY AS LOWER SURFACE DEWPOINTS SLOWLY ADVECTING SOUTHWARD. AIR MASS REMAINING UNSTABLE SOUTH OF THE BOUNDARY AND WILL CONTINUE TO DESTABILIZE OVER THE NEXT FEW HOURS...WITH SURFACE DEWPOINTS IN THE LOWER 70S. COULD SEE SOME CONVECTION FIRE OVER EASTERN AND SOUTHERN PORTIONS OF THE AREA AS FRONTAL BOUNDARY SLOWLY WORKS SOUTHWARD. WILL KEEP AFTERNOON PROBABILITIES IN SLIGHT CHANCE RANGE. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...NONE PA...NONE. && TMA/WFO BUF
Hazardous weather outlook, Jun 15, 5:57 AM EST, 7 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CLEVELAND OH 657 AM EDT TUE JUN 15 2004 OHZ003-006>014-017>023-027>033-036>038-047-089-PAZ001>003-151355- ASHLAND OH-ASHTABULA INLAND OH-ASHTABULA LAKESHORE OH-CRAWFORD PA- CRAWFORD OH-CUYAHOGA OH-ERIE OH-GEAUGA OH-HANCOCK OH-HOLMES OH- HURON OH-KNOX OH-LAKE OH-LORAIN OH-LUCAS OH-MAHONING OH-MARION OH- MEDINA OH-MORROW OH-NORTHERN ERIE PA-OTTAWA OH-PORTAGE OH- RICHLAND OH-SANDUSKY OH-SENECA OH-SOUTHERN ERIE PA-STARK OH- SUMMIT OH-TRUMBULL OH-WAYNE OH-WOOD OH-WYANDOT OH- INCLUDING THE CITIES OF...AKRON...ASHLAND...ASHTABULA... BOWLING GREEN...BUCYRUS...CANTON...CHARDON...CLEVELAND...ELYRIA... ERIE...FINDLAY...FOSTORIA...FREMONT...JEFFERSON...LORAIN... MANSFIELD...MARION...MEADVILLE...MEDINA...MILLERSBURG... MOUNT GILEAD...MOUNT VERNON...NORWALK...PAINESVILLE...PORT CLINTON... RAVENNA...SANDUSKY...TIFFIN...TOLEDO...UPPER SANDUSKY...WARREN... WOOSTER AND YOUNGSTOWN 657 AM EDT TUE JUN 15 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTION OF NORTHERN OHIO AND A PORTION OF NORTHWEST PENNSYLVANIA. .DAY ONE...TODAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN... THERE IS A CHANCE OF SEVERE THUNDERSTORMS IN EXTREME NORTHWEST OHIO WEDNESDAY AND MUCH OF NORTHERN OHIO AND NORTHWEST PENNSYLVANIA ON THURSDAY. IN ADDITION...WITH THE GROUND FAIRLY SATURATED ACROSS MUCH OF NORTHERN OHIO...THERE IS A CHANCE THAT ANY THUNDERSTORMS COULD RESULT IN LOCAL FLOODING. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The radar
The Cincinnati radar (KILN), 137 km away, was scanning. The volume nearest the first event began at 18:14 UTC.
Event by event
2 thunderstorm wind. Local standard time, as filed.
Thunderstorm Wind, Knox
- When
- June 15, 1:30 PM EST to 1:38 PM EST
- Where
- Knox County, Mt Vernon
- Measured
- 50 kt (58 mph) estimated gust
- Property damage
- $4,000
- Reported by
- DEPT OF HIGHWAYS
- Coordinates
- 40.400, -82.483
Thunderstorms downed one tree north of Mount Vernon and a second northeast of the city.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flash Flooding and Damaging Wind in Virginia, June 15 to 16, 2004
- Rip Current in Florida, June 15, 2004
- Flash Flooding and Flooding in Ohio, June 15, 2004
- Flash Flood in Minnesota, June 15 to 16, 2004
- Flash Flood and Hail in Nebraska, June 15, 2004
- Tornadoes and Hail in Colorado, June 15, 2004
- Flash Flood in Ohio, June 15, 2004
- Tornadoes and Flash Flood in Kansas, June 15, 2004
- Flash Flooding and Hail in Kansas, June 15, 2004
- Flash Flood in Ohio, June 15, 2004
- Flash Flooding and Damaging Winds in Kansas, June 15, 2004
- Flash Flooding in Texas, June 15, 2004
More
Every storm in Ohio in 2004Every state in 2004This day in weather historyWarnings in Ohio, June 2004
Sources
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: 5408061, 5408060.