Jun 29, 2007
Severe Thunderstorms on June
29, 2007
On the afternoon and early evening of June 29th,
2007, strong thunderstorms moved through eastern Washington and the Idaho Panhandle.
The loop below shows the visible satellite imagery
A loop of the radar imagery for this event shows how the initial line of thunderstorms just as it was moving over the Spokane Valley. The line continued to intensify into a "bow echo" as it moved south of Sandpoint. These storms blew down trees and produced penny-sized hail in Hayden, ID. Another bow echo moved north of Sandpoint causing tree damage in Coolin and Bonners Ferry.
Towards the end of the event, more thunderstorms formed over the Blue Mountains of northeast Oregon and moved across the southern panhandle of Idaho. These storms produced golf ball sized hail on the Camas Prairie southeast of Lewiston.
Strong rotation was observed by the weather radar. The loop below shows this rotation. Green colors indicate wind blowing towards the radar (i.e. from the southeast) and red colors represent winds blowing away from the radar (from the northwest). Tornado warnings were issued for Lewis and Clearwater counties. A tornado was reported near Orofino east of Lewiston.
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