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A little breezy on the east side....
- garyabrill
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- Marcus
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Thanks for the talk last night Gary -- good stuff. We went out and mulled it over at the Old Time...
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I'd imagine there'd be 2+ feet of wind deposited snow on sheltered and lee slopes at Mission. Maybe I'll report back after skiing tomorrow.
Aaron, I'd bet there is snow all the way from Mission to Spokane. Two feet of fresh, downed trees on a multitude of aspects.....
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- garyabrill
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My favorite weather...
Thanks for the talk last night Gary -- good stuff. We went out and mulled it over at the Old Time...
Thanks, Marcus. Glad you enjoyed it.
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www.nwac.us/~nwac/products/OSOMSR
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[WENATCHEE — The Liberator chairlift may reopen today. Mission Ridge ski area crews worked day and night over the weekend to repair the ski lift’s heavy storm damage.
Winds up to 135 miles an hour broke the windows in the lift’s drive terminal Thursday night, said general manager Mark Milliette.
Snow blew in from the broken windows and piled up on the control panels and electrical wiring.
Mission Ridge crews boarded up the windows and dried the electrical components over the weekend.
“Right now we’re starting to zero in on last of the trouble-shooting,” said general manager Mark Milliette.
The goal is to reopen the lift today, Milliette said in a phone interview this morning. Milliette said he will know by this afternoon whether the repairs could be finished today.
PUD crews restored power to Mission Ridge at 11:30 a.m. Friday, Milliette said.
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- garyabrill
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www.nwac.us/~nwac/products/OSOMSR
It's going to be scary to see the aftermath...
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- Amar Andalkar
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I remember reading somewhere on the internet that the highest wind gust ever recorded on Mission was 132 mph. Maybe this is a new record?
I believe the 135mph gust was not only the strongest Mission has recorded, but likely the highest winds (below Muir) ever recorded on NWAC telemetry. There are no "official records" that have been kept, although the back data is saved - at least for a number of years.
I've been curious about this ever since your posts. I finally found a couple of hours right now to go through the Mission Ridge telemetry data and find the record wind gust. Here's a summary of each season's maximum wind speeds (plus any other dates with 100+ mph winds) since the telemetry site was installed in 1988:
1988-89: 89 mph 17Jan1989
1989-90: 83 mph 10Feb1990
1990-91: 83 mph 19Dec1990
1991-92: 66 mph 11Dec1991
1992-93: 72 mph 24Jan1993
1993-94: 68 mph 04Jan1994
1994-95: 85 mph 28Dec1994
1995-96: 71 mph 27Feb1996
1996-97: all data missing
1997-98: 74 mph 26Mar1998
1998-99: 136 mph 02Feb1999; also 100 mph 26Dec1998, 108 mph 14Jan1999, 100 mph 19Feb1999
1999-00: 116 mph 15Dec1999 and 09Jan2000
also 101 mph 11Dec1999, 103 mph 17Dec1999, 105 mph 08Jan2000, 108 mph 14Mar2000, 100 mph 18Mar2000
2000-01: 112 mph 15Dec2000
2001-02: 112 mph 11Mar2002; also 103 mph 20Jan2002, 106 mph 19Mar2002, 100 mph 16Apr2002
2002-03: 101 mph 03Jan2003; also 100 mph 26Dec 2002 and 11Mar2003
2003-04: 106 mph 30Jan2004; also 102 mph 05Mar2004
2004-05: 80 mph 12Jan2005
2005-06: all data missing after late Dec
These values were extracted directly from the original NWAC data files (many thanks to Garth Ferber for making these available). I've tried to purge any obviously erroneous values in the data prior to searching for each season's maximum, but some of the values listed above may nevertheless be wrong, since I have no control over the quality of the original automated telemetry data and there is some missing data every season. It might be useful to double-check the plausibility of these earlier values by making sure there was actually a major storm on these dates. According to the Daily Weather Map Archive , a powerful 988 mbar low hit the BC coast on 02Feb1999, producing a strong pressure gradient throughout WA, so the 136mph reading does meet a simple plausibility standard. I haven't bothered checking any of the other dates.
So it appears that the previous record was 136 mph in 1999, and the 135 mph on 15Dec2006 fell just short . . . until today's 137 mph mark. Here are the dates this season with 100+mph winds:
111 mph 13Nov2006
121 mph 13Dec2006
135 mph 15Dec2006
113 mph 02Jan2007
137 mph 07Jan2007
134 mph 09Jan2007
Clearly 2006-7 is an extremely unusual season for high-wind storms in the central WA Cascades, with the half-dozen storms hitting 110+ mph surpassing the total number during the previous 15 years of data. And the 20 consecutive hours with 100+ mph maxima between 0400 and 2300 on 07Jan2007 (see table below) is COMPLETELY unprecedented in the history of the Mission Ridge telemetry site, most other high wind events only last a few hours (100+ max winds for 1-3 hours). Perhaps the Mission Ridge anemometer just has some slippery new bearings this year . . . ?
Northwest Weather and Avalanche Center
Mission Ridge Ski Area, Washington
MM/DD Hour Temp Temp Temp RH RH Wind Wind Wind Hour Total 24 Hr Total
PST F F F % % mph Max Dir Prec. Prec. Snow Snow
6740' 5300' 4600' 6740' 5300' 6740' 6740' 6740' 5300' 5300' 5300' 5300'
1 6 2300 15 22 25 94 100 39 54 226 0 0 0 51
1 7 0 15 22 25 94 100 37 50 225 0 0 0 52
1 7 100 15 22 25 94 100 36 46 225 .02 .02 0 52
1 7 200 15 22 25 95 100 45 65 228 .03 .05 0 51
1 7 300 19 24 26 96 100 58 86 239 .03 .08 0 52
1 7 400 21 27 31 97 100 70 102 241 0 .08 0 52
1 7 500 22 28 32 97 100 71 111 253 0 .08 0 52
1 7 600 24 30 34 98 100 77 126 252 0 .08 0 52
1 7 700 25 31 35 98 100 79 120 254 0 .08 0 52
1 7 800 25 31 35 98 100 79 129 256 0 .08 0 52
1 7 900 25 31 34 98 100 81 132 257 .03 .11 0 52
1 7 1000 26 31 33 98 100 78 123 259 .04 .15 0 51
1 7 1100 26 32 33 98 100 79 126 260 .02 .17 0 52
1 7 1200 26 32 34 98 100 -6999 134 260 .01 .18 1 52
1 7 1300 26 31 34 98 100 -6999 135 265 .01 .19 1 53
1 7 1400 25 31 34 98 100 -6999 136 271 0 .19 1 53
1 7 1500 24 30 33 97 100 -6999 136 272 .01 .2 1 53
1 7 1600 24 30 34 98 100 -6999 134 273 0 .2 1 53
1 7 1700 25 30 35 98 100 82 137 275 0 .2 1 53
1 7 1800 24 30 35 98 100 78 117 275 0 .2 2 53
1 7 1900 24 30 35 98 100 78 123 273 0 .2 1 53
1 7 2000 24 29 34 97 100 75 116 275 0 .2 1 52
1 7 2100 23 29 34 97 100 65 100 278 0 .2 1 53
1 7 2200 22 28 33 97 100 67 113 278 0 .2 1 53
1 7 2300 22 28 33 97 100 58 105 285 0 .2 1 53
1 8 0 21 26 31 96 100 30 59 304 0 .2 1 52
(Edited on 09Jan2007 to include that day's new storm info, plus added info on older 100+ mph storms.)
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Obviously there's been an extreme number of powerful storms this season, but is it possible that the installation of the Liberator Express high-speed quad in the summer of 2005 has changed the wind flow past the anemometer, perhaps by removing some trees or forcing the wind to accelerate slightly as it flows around the upper lift terminal? According to an article in the Seattle-PI , "The upper terminal for the express lift is in a spot 750 feet beyond and 50 feet higher than the old double." How close to the top of the lift is the NWAC telemetry site? Maybe I'll have to head over to Mission Ridge and take a look around when they finally reopen.
(And I'm not sure what the -6999 error code means, but the previous record gust of 136 mph in 1999 also has -6999 for the average that hour. Maybe Garth will see these posts and reply.)
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- Amar Andalkar
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Here's an updated list of days this season with 100+mph winds:
111 mph 13Nov2006
112 mph 12Dec2006
121 mph 13Dec2006
135 mph 15Dec2006
113 mph 02Jan2007
137 mph 07Jan2007
134 mph 09Jan2007
107 mph 15Feb2007
102 mph 19Feb2007
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