Storm Events Database

Event Details

Event Flood
-- Flood Cause Heavy Rain / Snow Melt
State WASHINGTON
County/Area OKANOGAN
WFO OTX
Report Source Park/Forest Service
NCDC Data Source CSV
Begin Date 2011-05-27 00:00:00.0 PST-8
Begin Location 9WNW MAZAMA ARPT
Begin Lat/Lon 48.72/-120.68
End Date 2011-05-31 23:00:00.0 PST-8
End Location 6NE TWISP ARPT
End Lat/Lon 48.41/-119.99
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 8.00K
Crop Damage 0.00K
Episode Narrative A wet spring season continued for the Inland Northwest during the last week of May as another, wet storm system moved through the region producing in the neighborhood of half to one and a half inches of liquid precipitation over Northern Washington May 25-26th. Many basins were already swollen from wet conditions and excessive snowmelt earlier in the month and soils were very saturated and unstable in some locations. As a result, rivers, small streams, and creeks continued to rise near bankfull to above flood stages. Additionally, several landslides occurred in the Okanogan National Forest.
Event Narrative Several roads sustained water damage from flooding creeks and streams within the Okanogan National Forest. These roads include West Chewuch Road, Volstead Road, Cub Creek Road, Boulder Creek, and Harts Pass. The extent of the damage is not known at this time and damage costs were estimated.


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 22.00K 17.00K
MAZAMA ARPT OKANOGAN CO. WA 05/27/2011 00:00 PST-8 Flood 0 0 8.00K 0.00K
OLDS CHELAN CO. WA 05/28/2011 17:00 PST-8 Flood 0 0 0.00K 0.00K
EAST SLOPES NORTHERN CASCADES ... EAST SLOPES NORTHERN CASCADES ... WA 05/31/2011 07:00 PST-8 Landslide 0 0 0.00K 0.00K
EAST SLOPES NORTHERN CASCADES ... EAST SLOPES NORTHERN CASCADES ... WA 05/31/2011 15:35 PST-8 Landslide 0 0 14.00K 17.00K
Totals: 0 0 22.00K 17.00K