Now That’s Cold

Freeze Levels in the USA 5 Jan 2010 at 05:00 Zulu

Freeze Levels in the USA 5 Jan 2010 at 05:00 Zulu

I’d been looking for “freeze level” information about the Northern hemisphere (having discovered that it was about 1,000 meters lower in the Southern Hemisphere than historical data indicated as normal during the last 1/2 cycle of the PDO) when I stumbled on this site. I like their graphs of current conditions, now I just need to find somewhere that makes an annual trend chart and has 8 decades of historical maps ;-)

http://www.eldoradocountyweather.com/current/freezinglevel.html

https://chiefio.wordpress.com/2011/01/03/freezing-level/ is where we first looked at Freeze Levels in South America.

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About E.M.Smith

A technical managerial sort interested in things from Stonehenge to computer science. My present "hot buttons' are the mythology of Climate Change and ancient metrology; but things change...
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9 Responses to Now That’s Cold

  1. George says:

    I would be interested in seeing that information in “anomaly” format. What is the delta from “average” for the date?

  2. It never snowed in Los Angeles…until this Landscheidt Minimum

  3. E.M.Smith says:

    @George:

    I’ve only just started looking at Freeze Levels. All I’ve found so far are weather reports, like the page cited here, and that paper on South American levels from 1950’s to date.

    Yes, an ‘annual anomalies’ page would be very nice. If anyone finds one, I’d love to know where to look.

    @Adolfo:

    Have you a pointer to some unusual snow event in L.A.? The snows in the Tejon Pass / Grapevine are more or less normal (modulo being a bit early and cold). If there was snow on the L.A. Basin floor, that ought to be news. I once ‘checked out apartments’ in L.A. and some of them had no heaters at all. The one that I liked the most had a heater. It was about a 1 kW electric element with a small fan mounted in the wall. The person showing the apartment said “I think it works, I’ve never turned it on. You can try it if you like.”

    Then again, this was in the age of incandescent light bulbs and vacuum tube TV’s, so maybe they need heaters now ;-)

    This link:

    http://www.laalmanac.com/weather/we17.htm

    says it snowed in the ’60s and a couple of other times. Then it looks like a long break, and s ‘dusting’ in 2007… Hmmmmm….

    For measurable snow to occur, temperatures at ground level must be at or below 32 degrees Fahrenheit. Nevertheless, on January 17, 2007, an extremely rare light dusting of snow fell in the Malibu area and in West Los Angeles.

    Looks like a convenient metric for cold excursion detection.

  4. George says:

    I remember watching on the news in the early 1970’s of snow in LA but it might have been someplace in LA county, not LA proper.

    They showed video of kids going crazy in it. But LA county varies considerably in altitude.

  5. E.M.Smith

    I heard at a local news radio (Lima,Peru, S.A) to a journalist, speaking from L.A. this morning that “for the first time ever’ it had snowed there.

  6. BTW, here we are having a relatively cold summer, like being with A.C.(from 17 to 22 C) all the time. We are 16 deg. Celsius below the maximum reached during the 1997-98 El Niño. (38 deg.C).
    So you are cold and we are cool.

  7. kuhnkat says:

    I live next door to LA and didn’t hear any reports myself. The snow is earlier and lower than normal this year in the County of LA that includes some of the San Gabriel mountains.

  8. kuhnkat says:

    Oh yeah, it has snowed in 1949 (.3″), 1950 (.2″) and 1954 (.3″).

    http://www.laalmanac.com/weather/we17.htm
    http://www.laalmanac.com/weather/we02.htm

    This is only good thru 2006.

  9. Laurence M. Sheehan, PE says:

    “Trends” are interesting to look at, but can not be used to predict the future. Extrapolating from 2 points on a curve is not at all a good concept. Best look back in history to see what could happen as far as outliers go.

    I figure we have been dealt two pair of global cooling, and are drawing one card to a full house of ice age.

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