snow_wizard Posted March 6, 2019 Report Share Posted March 6, 2019 I came up with a chart to compare February 2019 to other historic Februaries for Seattle back to 1880. I chose several key elements to compare...all having to do with either temperature or snowfall. The points of comprison are monthly average temperature, coldest minimum for the month, max temperatures below 40, max temperatures of 32 or below, min temeperatures 32 or below, total monthly snowfall, snowiest day, maximum snow depth, and number of days with 1 inch or more snow on the ground. Each of these metrics are assigned a value from 1 to 5 with 1 being least extreme and 5 being the most extreme. The scales are as follows: Monthly average temperature 39.5 and above = 138.6 - 39.4 = 237.6 - 38.5 = 336.1 - 37.5 = 436.0 and below = 5 Extreme minimum temperature for the month 28 and above = 125 - 27 = 220 - 24 = 315 - 19 = 4Below 15 = 5 Max temperature below 40 (number of days) Below 5 = 15 - 6 = 27 - 8 = 38 - 9 = 410 and above = 5 Max temperature 32 or below (number of days) 1 = 12 = 23 = 34 = 45 and above = 5 Min temperature 32 or below (number of days) Below 8 = 18 - 11 = 212 - 14 = 315 - 17 = 418 and above = 5 Monthly snowfall Below 6" = 16" - 7.9" = 28" - 11.9" = 312" - 14.9" = 415" and above = 5 Greatest daily snowfall Below 4" = 14" - 4.9" = 25" - 5.9" = 36" - 7.9" = 48" and above = 5 Maximum depth Below 4" = 14" = 25" - 6" = 37" - 8" = 4Over 8" = 5 Number of days 1" or more on ground Below 5 = 15 = 26 - 7 = 38 - 9 = 410 or greater = 5 There is also a column for monthly average temperature which is derived from an average of all stations for the Puget Sound Lowlands. The scale for that is as follows: 38.1 or above = 137.1 - 38.0 = 236.1 - 37.0 = 334.6 - 36.0 = 434.5 and below = 5 In tallying up the points columns I used whichever one had the highest point value between Seattle and the Puget Sound Lowlands for monthly average temperature. All other criterion are from either Sea - Tac Airport (1945 - present), the city of Seattle (1891 - 1944), or Tacoma 1883 - 1890). Of the following two tables one is sorted by rank of total points for all of the criteria combined and the other is simply in chronological order. As I'm sure you'll notice the period 1880 through 1899 utterly dominates the top spots. Amazing so many top tier Februaries could happen over such a short period. Quite obviously our just completed February 2019 stacked up pretty well against the competition! 1 Quote Death To Warm Anomalies! Winter 2023-24 stats Total Snowfall = 1.0" Day with 1" or more snow depth = 1 Total Hail = 0.0 Total Ice = 0.2 Coldest Low = 13 Lows 32 or below = 45 Highs 32 or below = 3 Lows 20 or below = 3 Highs 40 or below = 9 Link to comment Share on other sites More sharing options...
snow_wizard Posted March 6, 2019 Author Report Share Posted March 6, 2019 Here are the charts. 2 Quote Death To Warm Anomalies! Winter 2023-24 stats Total Snowfall = 1.0" Day with 1" or more snow depth = 1 Total Hail = 0.0 Total Ice = 0.2 Coldest Low = 13 Lows 32 or below = 45 Highs 32 or below = 3 Lows 20 or below = 3 Highs 40 or below = 9 Link to comment Share on other sites More sharing options...
Front Ranger Posted March 6, 2019 Report Share Posted March 6, 2019 Great work, Wiz! Seems like a very fair way to rate any winter month. Side note: 2017-2019 is the first time since 1955-57 that three Februaries in a row have had an average temp below 40 at OLM. 1 Quote A forum for the end of the world. Link to comment Share on other sites More sharing options...
snow_wizard Posted March 7, 2019 Author Report Share Posted March 7, 2019 Great work, Wiz! Seems like a very fair way to rate any winter month. Side note: 2017-2019 is the first time since 1955-57 that three Februaries in a row have had an average temp below 40 at OLM. Thanks! I've had three consecutive Februaries average below 40 here as well. And all have had snowfall. Quote Death To Warm Anomalies! Winter 2023-24 stats Total Snowfall = 1.0" Day with 1" or more snow depth = 1 Total Hail = 0.0 Total Ice = 0.2 Coldest Low = 13 Lows 32 or below = 45 Highs 32 or below = 3 Lows 20 or below = 3 Highs 40 or below = 9 Link to comment Share on other sites More sharing options...
SilverFallsAndrew Posted March 7, 2019 Report Share Posted March 7, 2019 I really cannot wait to see Silver Falls February stats when they come in, probably in a couple of months. I really really hope they recorded snowfall. They have generally been doing a better job in recent years of doing that. It's pretty obvious they are mostly just calculating snow depth changes as daily snowfall, but that is better than nothing even if it is under representing how much snow actually falls. 1 Quote Snowfall Precip 2022-23: 95.0" 2022-23: 17.39" 2021-22: 52.6" 2021-22: 91.46" 2020-21: 12.0" 2020-21: 71.59" 2019-20: 23.5" 2019-20: 58.54" 2018-19: 63.5" 2018-19: 66.33" 2017-18: 30.3" 2017-18: 59.83" 2016-17: 49.2" 2016-17: 97.58" 2015-16: 11.75" 2015-16: 68.67" 2014-15: 3.5" 2013-14: 11.75" 2013-14: 62.30 2012-13: 16.75" 2012-13: 78.45 2011-12: 98.5" 2011-12: 92.67" It's always sunny at Winters Hill! Fighting the good fight against weather evil. Link to comment Share on other sites More sharing options...
MossMan Posted March 9, 2019 Report Share Posted March 9, 2019 Not going to go by official stats but more personal experience and not just February..This is probably #4 all time for me.#1 November 2006#2 December 2008#3 November 1985#4 February/March 2019#5 December 1996#6 December 1990#7 January 2012#8 February 1989 (I think) #9 January 1980 (I think) #10 February 2018I will explain why later when I don’t have a baby in my arms. Quote Elevation 580’ Location a few miles east of I-5 on the Snohomish Co side of the Snohomish/Skagit border. I love snow/cold AND sun/warmth! Link to comment Share on other sites More sharing options...
snow_wizard Posted March 10, 2019 Author Report Share Posted March 10, 2019 Not going to go by official stats but more personal experience and not just February..This is probably #4 all time for me.#1 November 2006#2 December 2008#3 November 1985#4 February/March 2019#5 December 1996#6 December 1990#7 January 2012#8 February 1989 (I think)#9 January 1980 (I think)#10 February 2018I will explain why later when I don’t have a baby in my arms. Fun idea! I would go with. November 1985 - no way anything I've lived through tops the overall wintriness of this amazing monthJanuary / early Feb 1972 - Always a special place in my heart since I was 8 years old when this happened!December 1990 - Big snow where I was living at the time followed by EPIC cold and a white ChristmasWinter 1988-89 - Where I was living at the time we had a nice C-Zone snow in January besides the major Feb and Mar eventsJanuary 1980 - our last really great JanuaryDecember 2008 - multiple snow events, good duration, solid coldFebruary 2019 - very close race between this and December 2008. This month had my favorite snowstorm since moving to Covington.December 1996 - this one was big but ended too quickly and with a huge messDecember 1974 - one of the heaviest snows I can recall as a child...A big rain transitioning to snow eventFebruary 1985 - multiple snows long lasting decent coldJanuary 2007 - best January event of the 21st century for MBY. Decent snowfall followed by a good period of cold and clear Honorable mention January / early February 1996, February 1990, winter 1992-93, January 2004 Quote Death To Warm Anomalies! Winter 2023-24 stats Total Snowfall = 1.0" Day with 1" or more snow depth = 1 Total Hail = 0.0 Total Ice = 0.2 Coldest Low = 13 Lows 32 or below = 45 Highs 32 or below = 3 Lows 20 or below = 3 Highs 40 or below = 9 Link to comment Share on other sites More sharing options...
TigerWoodsLibido Posted March 11, 2019 Report Share Posted March 11, 2019 For me this was my second best since I moved to Oregon in 1989. Only Dec 2008 tops it and I lived in the N Willamette Valley then. This is the best month in the s valley for snow since I moved to Oregon as well as they largely missed out in Dec 2008. Quote Springfield, Oregon regular season 2023-24 Stats: Coldest high: 25F (Jan 14, 2024) Coldest low: 20F (Jan 14, 2024) Days with below freezing temps: 24 (Most recent: Mar 8, 2024) Days with sub-40F highs: 4 (Most recent: Jan 16, 2024) Total snowfall: 0.0" Total ice: 2.25” Last accumulating snowfall on roads: Dec 27, 2021 (1.9") Last sub-freezing high: Jan 15, 2024 (27F) Last White Christmas: 1990 Significant wind events (gusts 45+): 0 Personal Stats: Last accumulating snowfall on roads: Dec 27, 2021 Last sub-freezing high: Jan 16, 2024 (32F) Last White Christmas: 2008 Total snowfall since joining TheWeatherForums: 42.0" Sub-freezing highs since joining TheWeatherForums: 4 Venmo GoFundMe "College Basketball vs Epilepsy": gf.me/u/zk3pj2 My Twitter @CBBjerseys4hope 24 Link to comment Share on other sites More sharing options...
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