Wallowa storm history

A social media report from Lostine, Oregon indicated that hail stones up to 1.25 inches in size fell around 1627 PDT. A trained spotter 1 mile west northwest of Lostine reported hail stones to the size of 1 inch around 1628 PDT.

Public reported several downed trees and power outages. Wind speed estimated from damage.

Social media reported a large tree down in Imnaha with power outages. Wind gust of 56 mph measured from co-op observer.

A thunderstorm developed over the Wallowa Mountains late in the afternoon of April 14, moving northwest into more populated areas of the Wallowa Valley, such as Joseph and Lostine.

A trained spotter in Wallowa, OR reported a severe thunderstorm that was producing hailstones the size of tennis balls. Reports and pictures received from the public also indicated that hail had damaged the sidings of windows of homes, as well as damaging the panels and windows o…

Nickle to quarter size hail covering the ground in Joseph.

Flood stage is 10.0 feet. The river rose above flood stage on February 7, at 125 am, crested at 11.73 feet on February 7, 1015 am, then fell below flood stage on February 8, at 430am. There was moderate flooding along the Grande Ronde River from Troy downstream to the Washington …

Field and roadway flooding was seen along the Grande Ronde River and numerous other small streams with significant snowmelt and heavy rain.

Largest hail estimated at 1 inch in diameter near Imnaha in Wallowa county.

Run off and land slides damaged Imnaha Highway (Hwy 350) between mile posts 14 and 20. Road was closed and clean up continued into at least the next day. Rainfall south of Imnaha was as much as 0.87 inches over a one and a half hour period leading up to the flood.

The Imnaha River at Imnaha had minor flooding early on May 6th, due to snow melt. The river crested at the flood stage of 5.5 feet early on May 6th.

The Grande Ronde river at Troy (flood stage 10.0 feet) crested at 11.5 feet at 1000 on March 16, fell below flood stage and then rose again to 11.7 feet at 0100 on March 19th. River went below flood stage around 1400 on March 20th.

Trained Spotter Estimated a 70 MPH wind gust.

Public reported 12 large trees downed.

Although this is reported as 1 inch hail, it was discovered 15 hours after the storm. Indicating this could have been much larger hail.

ODOT reported trees down across Highway 350 at mile post 16.8.

Winds gusting to 40 mph preceded the hail.

The Imnaha River at Imnaha crested at 5.94 feet on April 26 at 10:30 pm. Flood stage is 5.5 feet.

Hail was followed by heavy rainfall.

Hail ranged from pea size up to quarter size. Also, .60 inch of rainfall in about 20 minutes and wind gusts to 30 mph.

Thunderstorm downed four large trees at the Scout Camp south of Wallowa Lake.

Only minor flooding observed. The river at Troy crested at 10.3 which was .3 above flood stage.

Hail of ping pong and golf ball size reported by the public and a spotter.

Quarter sized hail covered the ground and chipped paint on car. Hail was accompanied by heavy rainfall.

Thunderstorm winds broke the 1.5 inch diameter top off a 10 year old maple tree. Winds accompanied by very heavy rainfall and hail.

Wallowa County dispatch reported a tree blown down on Highway 3 at milepost 30.

The Grande Ronde River at Troy crested 10 pm on June 4 at 10.8 feet. Flood stage is 10.0 feet.

The Imnaha River at Imnaha crested at 6.1 feet on June 4 at 730 pm. Flood stage is 5.5 feet.

Flooding reported in the Minam area with emergency crews sandbagging local businesses and removing debris from surrounding area. A USGS river gauge was destroyed.

Spotter reported the ground was white with hail and small branches were knocked down.

Rainfall of 1.1 inches was measured in 20 minutes.

In additon, heavy rain fell for almost 1 hour.

Oregon Department of Fish and Wildlife reported nickel sized hail.

The Imnaha River gage crested several times above flood stage with a peak of 6.26 on May 19.