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Tag Archives: Upper level

Very stormy Mother’s Day and entire upcoming week

So much weather is on tap for the U.S. today (Fig. 1), and then for the whole week, that it’s impossible to cover the scenario in depth. Instead, look at these brief summaries of impending events…To read the entire feature, click here. Originally published 05/11/14

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Wildly different air masses spell wild weather

The first in a series of strong upper level troughs and associated surface low-pressure systems (one of which helped spawn several days of severe weather and heavy thunderstorms) is exiting the western Great Lakes region today (Fig. 1). In its wake, a second, stronger system will be moving into…To read

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Winter transitions to spring but weather pattern stays the same

Spring arrived yesterday. Except for a brief warm-up in some places the next few days, the weather pattern of warm and dry in the west and cool/cold and wet in the east seems set to continue until further notice….To read the entire feature, click here. Originally published 03/21/14

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Only a brief collapse of the winter 2013-2014 weather pattern

Yesterday was the Ides of February (Feb. 15). That means that meteorological winter will be over in less than two weeks. Astronomical winter has a bit more than a month to go. Winter officially ends (and Spring begins) on Mar. 20, 2014…To read the entire feature, click here. Originally published

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The polar vortex returns to the eastern U.S.; an upper ridge dominates weather in the west

If you liked the polar vortex earlier this month, then you’ll definitely like its return this week. Although the polar won’t be quite as far south or quite as cold, it will still make its presence felt. By the way, the only thing of consequence about the “polar vortex” is…To

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Three cold fronts this week for southwest Florida

Enjoy today’s unseasonable warmth. The downhill slide begins tomorrow (Tues., Jan. 14, 2014) and continues through the upcoming weekend. A series of three cold fronts…To read the entire feature, click here. Originally published 01/13/14

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Polar vortex may not be the culprit in recent arctic blast!

If you watched many TV weathercasters report during the first week of January 2014, you heard explanations about how the polar vortex, and its associated pool of bitterly cold arctic air, controlled the weather across the eastern two-thirds of North America (Fig. 1). The counter-clockwise circulation…To read the entire feature,

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Arctic air invading the US

Starting today (Dec. 1, 2013) and tomorrow across parts of the Pacific Northwest, a complex storm system will herald the arrival of this week’s bitter arctic air mass for much of the US. With meteorological winter starting today…To read the entire feature, click here. Originally published 12/1/13

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Strong subsidence event leads to dramatic dew point drops in northern California

The National Weather Service (NWS) office in Monterey, CA posted an image and a brief summary of a strong drying event that occurred in north-central California during the Nov. 20, 2013 to Nov. 22, 2013 period. Santa Rosa (just north of the San Francisco Bay area) recorded a 56-degree dew

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Significant November Great Lakes storm expected this weekend

It’s going to be a stormy weather weekend across the central part of the US. Starting today (Sat., Nov. 16, 2013), wintry weather is expected across the Rockies. Locally heavy snowfall, especially at higher elevations, is expected. Along the Front Range of the Rockies, high wind watches and warnings…To read

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