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Re: Spring?
  • Subject: Re: Spring?
  • From: "Johnson, Cyndi D Civ USAF AFMC 95 CS/SCOSI" <cyndi.johnson@edwards.af.mil>
  • Date: Thu, 15 Mar 2012 07:58:12 -0700

This weekend we are supposed to be getting plenty of wind, cold rain and I
heard a rumor of snow down to 3000' (I'll believe that when I see it). It's
been fairly nice for a while now, even last weekend was good although I
didn't get to spend it in the garden. Thought you might be interested in



Remarkable week-long March heat wave hitting U.S.

By Jeff Masters

Mar 14, 2012



A highly unusual week-long heat wave is building over much of the U.S., and
promises to bring the warmest temperatures ever seen so early in year to a
large portion of the Midwest. The exceptional heat will also be
exceptionally long-lasting: record-breaking temperatures 20 - 30 degrees F
above normal are expected today through next Wednesday for much of the
Midwest and Northeast U.S. The weather system responsible is a large
upper-level ridge of high pressure that is "stuck" in place--a phenomenon
known as a "blocking pattern." The jet stream is bending far to the south
over the Western U.S., then bending far to the north over the Rockies and
into Canada, and lies far to the north of the eastern U.S. Since the jet
stream acts as the boundary between cold air to the north and warm air to
the south, the current looping pattern is bringing colder than normal
temperatures and snow to the mountains of the West, and summer-like warmth
to the Eastern U.S. It is common for the jet stream to get stuck in a
blocking pattern for a period of a week or more, but not in to this
extremity. If the current model forecasts prove correct, a high pressure
ridge over the U.S. bringing heat this intense and long-lasting in March
will be unprecedented in the historical record, going back to 1872.

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