tag:blogger.com,1999:blog-7478606652950905956.post235927767791325005..comments2024-03-27T21:02:08.203-07:00Comments on Cliff Mass Weather Blog: The December 20 Windstorm and the Start of WinterCliff Mass Weather Bloghttp://www.blogger.com/profile/13948649423540350788noreply@blogger.comBlogger19125tag:blogger.com,1999:blog-7478606652950905956.post-46657062636797836202018-12-23T22:39:43.579-08:002018-12-23T22:39:43.579-08:00Rangers at Larrabee State Park at Chuckanut Drive ...Rangers at Larrabee State Park at Chuckanut Drive near Bellingham reported 60 mph wind gusts. Next day preparing for the winter solstice walk, this ~110 year Douglas fir was down. Skagit Valley college has a popular trail also with a row of largest second growth Dougfirs down. https://photos.app.goo.gl/cD6PBUjA2yC39Ciu6clive boultonhttps://www.blogger.com/profile/13368132383395164003noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-38080204056231099312018-12-22T20:04:30.888-08:002018-12-22T20:04:30.888-08:00My Anemometer is on my roof, 25' extension pol...My Anemometer is on my roof, 25' extension pole, secured with guy-wires. I get almost the exact same wind reading as SeaTac airport about 1.7 miles east of my location. <br /><br />So if you install on a roof and can get over 10' above the roof line, you will likely have very accurate readings as long as you don't have other obstacles in the way. Get high enough of your roof and wind will not be influenced by the roofline. Michael Snyderhttps://www.blogger.com/profile/06230219537755848399noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-83912622419635491322018-12-22T13:51:40.897-08:002018-12-22T13:51:40.897-08:00Still waiting for an official NOAA call that we ar...Still waiting for an official NOAA call that we are in El Nino:<br /><br />http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/ensodisc.shtml<br /><br />https://www.climate.gov/news-features/blogs/enso/december-2018-enso-update-relationship-advice<br /><br />Seems odd given that November and December have been pretty warm. Any alternative explanations for the warmth or is it just normal variation or Madden-Julian Oscillation (MJO)?<br /><br />(Oddly, our witch hazel starting blooming. We did it plant it last spring, so perhaps the plant is confused by the transplant and not the weather.)MAC in Bellinghamhttps://www.blogger.com/profile/00951163853106956325noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-50546692169563716692018-12-22T12:43:53.504-08:002018-12-22T12:43:53.504-08:00Cliff,
The Davis Vantage Pro2 on the Cama Beach S...Cliff,<br /><br />The Davis Vantage Pro2 on the Cama Beach State Park boathouse recorded a high gust of 78MPH. It's on a roof but highly exposed, see the photos at the bottom of the CWOP page https://weather.gladstonefamily.net/site/search?site=E2796&Get+information=Get+information )<br /><br />The data didn't get uploaded to Weather Underground because the internet was out.<br /><br />Kimelephanthttps://www.blogger.com/profile/13556247443773749071noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-91602082396752838402018-12-22T06:25:08.741-08:002018-12-22T06:25:08.741-08:00Perhaps that Blob out there in the Pacific might g...Perhaps that Blob out there in the Pacific might get churned out.BAMCIShttps://www.blogger.com/profile/05285865892838328830noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-88935128986765540642018-12-22T05:51:27.279-08:002018-12-22T05:51:27.279-08:00My weather station is about 4-5 metres (15-20 feet...My weather station is about 4-5 metres (15-20 feet) above my house, which is in a relatively open and unprotected by trees area. Is this reliable? If so, at my house in Port Townsend, the wind reached a maximum gust of 64 km/h (40 mph).Anonymoushttps://www.blogger.com/profile/02837853860139645250noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-27236673239402008312018-12-22T01:55:02.015-08:002018-12-22T01:55:02.015-08:00"Moderate" ?!? Cliff ... this wind storm..."Moderate" ?!? Cliff ... this wind storm ( preceded by & accompanied by driving rain) hit Whidbey Island with a "force" that knocked out the power at approx. 11 a.m. - picked-up speed - toppled trees which knocked down power lines - blocked roads ( including SR 525 - SR 20 ) - fell on homes & other buildings ( including the Greenbank Progressive Club clubhouse - where a tree severed the roof like a knife )... most of Whidbey Island was sans power until Friday afternoon ... and there are pockets NOW that are still without power - PSE sez they will not have power until Christmas Eve Day. Along the west side of Whidbey Island there was extensive damage done by the wind-driven storm surges of the high tide. floaterhttps://www.blogger.com/profile/04353784905773758854noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-66445294483619398022018-12-21T21:41:11.861-08:002018-12-21T21:41:11.861-08:00Thanks for your post Cliff. I prefer these kinds o...Thanks for your post Cliff. I prefer these kinds of analysis, vs debating settled science re the dramatic change in climate caused by humans. Re wind, it's okay to have microscale measurements vs just regional observations - such as Beacon Hill (Seattle) or Indian Hill (NE Tacoma). Placement variety provides a more complete view of the power and impacts of wind storms. Considering that the "cyclone" was forecasted to hit the center of mountainous Vancouver Island, I didn't think the impacts would be much in Edmonds. In fact, we lost nary a big tree branch. However, in the open terrain of Paine Field (Everett) - a reported gust of ~ 66 mph, at ~ 11 a.m. on 12/20, temporarily knocked-out the power in that areaStephen Fryhttps://www.blogger.com/profile/12950234135801092922noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-13381976996862719242018-12-21T20:39:57.659-08:002018-12-21T20:39:57.659-08:00Forecast for Olympia--at the airport--is a low of ...Forecast for Olympia--at the airport--is a low of 39 degrees. However it is already 32 degrees and has been since around 7:00pm. It is not unusual for the forecast and the actual temperature to be off by five or more degrees. Is this this a problem for all NWS forecasts or is there something unusual about the forecasts for the Olympia airport?<br /><br /><br />Fortunately the temperature at our house is at our house so the lemon tree is ok. I am bringing it in for the night though.Readerhttps://www.blogger.com/profile/06938732389434946072noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-67013124355245008242018-12-21T19:54:19.677-08:002018-12-21T19:54:19.677-08:00Our ski group got hit by a few 35+ mph gusts today...Our ski group got hit by a few 35+ mph gusts today on the ridges above Cutthroat lake off of the closed hwy 20. Est. at 6800 feet.<br /><br />From our perch we could observe two climax Avalanches. One on the north-facing slope under the Corniced saddle which Trends southerly towards Blue Peak. <br /><br />The second climax Avalanche was observed on the north-facing slope just below the rock walls that make up the North Face of Blue Peak. From our distance we were unable to observe debris piles.<br /><br /> Both slopes are popular ski lines, especially for the local helicopter ski operation.(they commandeer that area during they're operating season)<br /><br />For those that don't know a climax slide is a an Avalanche exposes the ground, IE the ground is bed surface or sliding surface.<br /><br />If you read my report here at the end of November,I mentioned air spaces at the snow and ground interface. <br /><br />That is where what are known as basal facets (or Base layer facets)often reside, especially when we have early season snows in the mountains which sit there for a bit in a thin snow pack. <br /><br />There were also some Crown Avalanches observed which most likely slide on the 12-9 weak layer which consists of a thin crust (south-facing aspect est 5800' and 6400' elevation) four feet down with facets (snow grain types most likely formed as surface Frost during the previous arctic cold spell) on top of the crust and facets growing beneath the crust. <br /><br />That weak layer combo is now buried four feet below the surface. Total snow depth at 5800' is approximately 5 feet 1 inch.<br /><br />Chris H <br />Heli-free North Cascades<br />Chris H.https://www.blogger.com/profile/10922945102509424248noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-29846708233962791182018-12-21T13:13:31.819-08:002018-12-21T13:13:31.819-08:00Interesting that we had another mountain wave alon...Interesting that we had another mountain wave along the middle of the Strait. Temps got near 58 near Sequim briefly in late morning, but not enough wind with this one to cause problems around Bell Hill. Humidity dropped briefly into the low 40’s before returning to 60’s as the wind backed around to the west.<br /><br />Last friday, it was 63 degrees with mid-20’s humidty during the wave. So this one was milder.<br /><br />Of course, our Blue Hole exists because of this descending air, and that’s very common, but normally with much more modest changes in wind, temp, humidity. <br /><br />I don’t recall having such intense, warm, dry, windy downslopes in previous years. Not sure if that’s a failure of my perceptions and memory, or if this is an uusual year for Olympic mountain waves. <br /><br />I will say that last night was the most dramatic Moon I’ve seen all year. Clear sky with a hint of mist at ground level made everything bright and glowing silver. Very different than a summer Moon as the post storm air was crystal overhead, but cold ground mist down below was glowing so bright that it made it special.<br /><br />My dogs and I sat covered in blankets on the deck at 3am and enjoyed the show. I think they enjoyed it as much as I did.Johnamarhttps://www.blogger.com/profile/17737399978789523366noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-4989848175540009732018-12-21T10:51:30.563-08:002018-12-21T10:51:30.563-08:00Any way to get a higher-res image of your second e...Any way to get a higher-res image of your second exhibit (the colour synoptic chart)?<br />Thanks, AndrewAndrewhttps://www.blogger.com/profile/11256466649979104124noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-28032460863125562742018-12-21T10:39:06.105-08:002018-12-21T10:39:06.105-08:00I was watching the building storm out the back win...I was watching the building storm out the back windows of my house while enjoying a late breakfast. Suddenly a huge gust hit, and one of those free-standing patio canopies flew up out of one neighbors yard, vaulted over a six foot fence, and crashed into the yard of the house next door, leaving a ruinous pile of flapping fabric and metal struts. Sort of cool and horrible at the same time. Time to call FEMA!JayWhttps://www.blogger.com/profile/01720743156875939800noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-15729076247977963442018-12-21T10:16:38.142-08:002018-12-21T10:16:38.142-08:00My wife and I took advantage of our location in NE...My wife and I took advantage of our location in NE Seattle and drove down to Magnuson Park at the peak of the storm. From the shore one could view the development of the storm with unimpeded sight lines. The white caps on Lake Washington were impressive, but I've definitely seem them more intimidating. The wind and waves were a magnet for Kite and Sail Board pros. There were a half dozen of them flying across the lake, literally in the case of the wings which were effectively used to lift the rider several meters off the water when they decided to. One question about the forecast, Cliff. I just read the 3:15 AM UW Washington State Forecast Discussion and it states that the models show the probability of wind and rain on Sunday, albeit not nearly as strong as previous activity, then improving through most of Christmas Day. Is it your opinion this is now less likely?John McBridehttps://www.blogger.com/profile/09503331313775640577noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-59243398342270441122018-12-21T10:06:27.311-08:002018-12-21T10:06:27.311-08:00I'm one of those stations with poor wind expos...I'm one of those stations with poor wind exposure even though my anemometer is 30 feet off the ground, so yes you need to add about 15 mph or so to the measurements but I'll take that over not having power (My Gen is still in the original box) for days or a 120 ft Douglas Fir in my bedroom.Unknownhttps://www.blogger.com/profile/06555161607600658403noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-69337205043682107362018-12-21T09:22:15.968-08:002018-12-21T09:22:15.968-08:00I had 43 high wind gust in North Marysville. My wi...I had 43 high wind gust in North Marysville. My wind anemometer is 8' above my roof line. I wish I have an open field to get an accurate reading.RGPhttps://www.blogger.com/profile/14406637941738601864noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-35928348779563878272018-12-21T09:07:23.391-08:002018-12-21T09:07:23.391-08:00Wind gusts of 119 mph at the top of Mission Ridge ...Wind gusts of 119 mph at the top of Mission Ridge Ski Area at 11:00 pm Thursday nightREWhttps://www.blogger.com/profile/11644965348090826312noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-88177755268070495342018-12-21T08:03:18.893-08:002018-12-21T08:03:18.893-08:00Sure blew through the Kitsap peninsula with a veng...Sure blew through the Kitsap peninsula with a vengeance! At just after 11am gusts caused multiple trees down and wiped out all the power on Bainbridge where I was. Kudos to PSE for getting our power back by 9pm last night<br />Island Girlhttps://www.blogger.com/profile/18392985169758538473noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-90062561432746652272018-12-21T07:18:12.012-08:002018-12-21T07:18:12.012-08:00The 10 m. specification for wind speed measurement...The 10 m. specification for wind speed measurement calls into question the agricultural weather station networks of the West. CIMIS (CA) anemometers are 2 m. AgriMet's at 3 m. Is there a reasonably reliable fudge factor that enables use of anemometers at lower heights above ground level?Bobhttps://www.blogger.com/profile/14843643676867089353noreply@blogger.com