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The Dexes / Heavy Rain / 307466

Eventdex · Heavy Rain

EAST SLOPES NORTHERN CASCADES

307466

The record

Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.

Event typeevent_typeDebris Flow
NOAA NCEI event IDncei_event_id307,466
Episode IDepisode_id50,947
Begin UTCbegin_utc2011-05-14T20:00:00+00:00
End UTCend_utc2011-05-14T20:20:00+00:00
StatestateWASHINGTON
County/zone typecz_typeZ
County/zone namecz_nameEAST SLOPES NORTHERN CASCADES
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourcePark/Forest Service
Episode narrativeepisode_narrativeA wet spring season resulted in saturated soils across the Inland Northwest. Rivers, small streams, and creeks began to rise as warming temperatures on May 13th and 14th melted mountain snowpack across the east slopes of the northern Cascades and Northeast Mountains. Warm and dry weather transitioned to cooler but considerably wetter conditions over the weekend May 14th and 15th. An upper level low pumped a considerable amount of moisture into the region with an extended period of heavy rainfall over the Cascades to the Okanogan Highlands early Saturday morning through Sunday morning. This heavy rainfall slowly pushed to the northeast into the Spokane Area and Northeast Mountains by Sunday afternoon into Monday. Forty-eight hour rainfall totals ranged from one to three inches across the east slopes of the northern Cascades, one to one and a half inches across the Spokane Area, to one to two and a quarter inches across the Northeast mountains. In addition to the flooding, landslides were reported, and even a few trees were downed as winds picked up across the Okanogan Highlands Saturday morning.
Event narrativeevent_narrativeMud and debris flowed into Lake Chelan down the Meadow Creek drainage. A section of the Lakeshore Trail was damaged during the landslide. Estimated the timing of the slide as it was reported to have occurred sometime either the 14th or the 15th.
Yearyear2,011

Provenance

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EAST SLOPES NORTHERN CASCADES — Heavy Rain — TerraPulse