11th grader David Sukhin's Snow Day Calculator uses weather data, user judgment calls, and algorithms of his own devising to predict the chances of a snow day for any school in the US. And, so far, to his knowledge it has never been wrong.
posted by Miko on Jan 28, 2011 - 32 comments

California's calm before the storm. It's just rain, right? Well, the meteorologists are publicly talking about a potentially epic storm that could trigger major flooding and mudslides, especially in areas effected by the state's widespread fires of the past few years. More ominously, though, is this internal email from CAL FIRE Division Chief Bob Wallen, which talks of the potential for "multiple large and powerful storm systems" with "a tremendous amount of precipitation . . . Much of NorCal is likely to see 5-10 inches in the lowlands, with 10-20 inches in orographically-favored areas. Most of SoCal will see 3-6 inches at lower elevations, with perhaps triple that amount in favored areas", with the potential for a massive snowfall, gusts in the 100-200 mph range in the high Sierras, possibly followed by plentiful warm rains that could melt the snow and cause massive flooding statewide. "The next 2-3 weeks (at least) are likely to be more active across California than any other 2-3 week period in recent memory."
posted by markkraft on Jan 16, 2010 - 176 comments

What Britain looks like without the Gulf Stream.
posted by Artw on Jan 7, 2010 - 134 comments

CoCoRaHS - "Volunteers working together to measure precipitation across the nation." Sponsored by NWS, NOAA, and more... Volunteers Wanted (pdf)
posted by MrBCID on Nov 19, 2009 - 8 comments

The Digital Snow Museum has all kinds of photographs and images of snow around the world. With an assortment of forecasting tools, weather maps, travel reports, info for skiers and snowboarders, a library and art gallery. Let It Snow. For those in the northern hemisphere, December 21st is the Winter Solstice, also known as Yule, the darkest day of the year. From this day until that of Midsummer, the days grow longer. Previously. [more inside]
posted by nickyskye on Dec 22, 2008 - 6 comments

It was a cold day on Mount Washington in New Hampshire today, where the weather can really suck. With a temperature of -37F and a peak wind gust of 117mph, it was cold enough to turn boiling water to snow (youtube). Also, previously on MeFi.
posted by SteveInMaine on Mar 6, 2007 - 60 comments

The Alaska Pacific River Forecast Center provides massive amounts of NWS remote weather station data on precipitation statewide. With avalanche season about to begin, these data are extremely useful to both amateur recreationists and snow professionals.
posted by mistermoore on Nov 14, 2006 - 9 comments

Halifax under curfew. The Globe and Mail and the CBC are reporting that the Province of Nova Scotia has placed Halifax, Canada, under a curfew tonight. The city has taken this unprecedented peacetime action to allow the snow plows to deal with the 100cm (~50 inches) of snow that has fallen in the last 24 hours. Anyone caught on the streets between 11pm and 7am faces a CDN$1000 fine.
posted by tiamat on Feb 20, 2004 - 35 comments

Snow Removal
posted by jeremias on Dec 7, 2003 - 9 comments

With a potential blizzard blanketing the northeast, it looks like flashmobs are out and snowball fights are in. What do you think, are we gonna see a lot more of this kind of thing now that online invitations are setting the standard? This invite seems to be flying around NYC pretty fast indeed. The question is: How big will the battle be?
posted by n9 on Dec 5, 2003 - 24 comments

More than you ever wanted to know about snow, from the physics of formation to just priddy pictures.
[Link via CuriousLee]
posted by Su on Jan 29, 2002 - 7 comments