Christopher C. Burt is the author of 'Extreme Weather; A Guide and Record Book'. He studied meteorology at the Univ. of Wisconsin-Madison.
By: Christopher C. Burt , 8:16 PM GMT on November 20, 2012
Northwest Storm Update for Tuesday, November 20th
The worst of the latest storm affecting Washington and Oregon has passed, although gusty winds and heavy rain showers continue across much of the region. Another fairly decent storm is expected to move into the region Wednesday and Thursday. Some very impressive wind speeds and rainfall amounts were reported from this latest storm. Here is a brief recap of these.
Top wind speeds observed
The highest winds reported occurred along the coast and coastal ranges of northern Oregon and southern Washington with a peak gust of 114 mph reported from Naselle Ridge in extreme southwest Washington. An elk hunter was killed near Nehalem, Oregon when a tree fell on his tent.
Here is a summary of wind reports encompassing the time period from 3 p.m. PST Sunday, November 18th to 3 p.m. PST November 19th. After 3 p.m. on the 19th the front had passed inland and sagged to the south and the wind diminished in intensity. Last night a wind gust of 67 mph was reported from Humboldt County in northwest California.
Storm rainfall totals
The NWS noted this morning that for the southern Oregon counties of Curry and Douglas this storm ranked among the top 5 November rain events on record. A remarkable 9.84” was measured three miles northeast of Harbor, Oregon (near Brookings on the extreme southern coast) in the 24 hours ending at 7 a.m. PST Tuesday, November 20th. Red Mounds, Oregon picked 7.84”, Brookings 7.72”, and Gold Beach 6.44” during this same period of time. Inland, Roseburg received 3.67” (Roseburg’s all-time 24-hour precipitation record is 4.35” on November 19, 1996). The Oregon state 24-hour rainfall remains safe with the 13.20” at Lee’s Camp on November 6, 2006. Lee’s Camp picked up 7.90” in 24 hours during this current storm.
In Washington the top rain report was 8.10” in 24 hours at Swift Creek snotel on the southern flank of Mt. Saint Helens at 4,400’ elevation. The storm total at Swift Creek was a respectable 12.80” for the 3-day period of Saturday-Monday November 17-19. Washington’s state 24-hour precipitation record remains the 14.26” at Mt. Mitchell on November 23-24, 1986.
This Google Earth view shows the location (identified by the coordinates of 46.16N, 122.18W) of Swift Creek, Washington on the southern flank of Mt. Saint Helens at 4,440’ elevation. It is a snotel RAWS station that has been in operation since 2002. Image from Google Earth.
I’ll be posting a new blog after the holiday. Happy Thanksgiving everybody!
Christopher C. Burt
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