Based on spotter reports and radar data, a Severe Thunderstorm Warning for extreme eastern Douglas County was issued at 1630 LDT. This warning expired at 1720 LDT, but was extended at 1735 LDT.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 MFR wrote it up.
Based on spotter reports and radar data, a Severe Thunderstorm Warning for extreme eastern Douglas County was issued at 1630 LDT. This warning expired at 1720 LDT, but was extended at 1735 LDT. The extension expired at 1859 LDT. The warning was verified by spotter reports of hail up to an inch in diameter.WSR-88D data and spotter reports indicated that heavy rain was occurring with this storm, and the storm was moving slowly. Thus, a Flash Flood Warning was issued for this storm at 1847 LDT, and it expired at 2100 LDT.
The Medford radar (KMAX), 139 km away, was scanning. The volume nearest the first event began at 03:10 UTC.
1 flash flood. Local standard time, as filed.
WSR-88D estimated a storm total precipitation maximum of 4.1 inches over Mt. Bailey...5 NM west of Diamond Lake.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 1999Every state in 1999This day in weather historyWarnings in Oregon, July 1999
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: 5716292.