Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 43 kts.
State IDAHO
County/Area NEZ PERCE
WFO OTX
Begin Date 08/28/2011 18:27:00 PST-8
Begin Range 3
Begin Azimuth NNE
Begin Location LEWISTON ORCHARDS
Begin Lat/Lon 46.41/-116.93
End Date 08/28/2011 18:36:00 PST-8
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 7.00K
Crop Damage 0.00K
Episode Narrative A combination of surface heating and weak ascent ahead of a compact upper-level low drifting into north-central Oregon resulted in scattered thunderstorms over Northeastern Oregon on the afternoon of the 28th. Meanwhile, very dry boundary layer conditions were developing over North Idaho. By the late afternoon and early evening, southerly steering flow directed the storms into the Idaho Panhandle. While gusty outflow winds were common with most storms, two storms were thought to have produced a microburst resulting in localized damage in each of Nez Perce and Kootenai Counties.
Event Narrative A highly localized microburst or possible gustnado resulted in minor damage of the Eagle Point subdivision approximately four miles east of downtown Lewiston. A section of a sheet metal roof was lifted off a two-story shop, a boat trailer was pushed into the outbuilding denting the sheet metal, three two-inch diameter trees were snapped, a travel trailer was knocked down, and lawn objects became airborne breaking one window of a house.


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 307.00K 0.00K
LEWISTON ORCHARDS NEZ PERCE CO. ID 08/28/2011 18:27 PST-8 Thunderstorm Wind 43 kts. EG 0 0 7.00K 0.00K
WORLEY KOOTENAI CO. ID 08/28/2011 22:13 PST-8 Thunderstorm Wind 48 kts. EG 0 0 300.00K 0.00K
Totals: 0 0 307.00K 0.00K