Sunday, March 17, 2013

March 17 St. Patrick's day is white this year.

Its a nice, slightly windy day  today. we had no clouds in the morning, but now at 3:24pm we have some cirrus clouds, predominately in the North East direction. The flag at Gordy's across the street from work is blowing to the West (coming from the east).

Temperature: 26°F
Dewpoint: 6°F
Humidity: 47%
Pressure: 1021.2 mb
Wind: 5mph WSW

Cirrostratus
Cirrocumulus Undualtus
These Cirrus clouds indicate a large amount of moisture approaching, according to my field guide these clouds mean you should watch the sky for approaching weather systems that may be unstable.

Update:

Here is an image from around 7pm on March 17, cumulus and cirrus clouds indicate an increase of moisture. This image is to the west.

 On the surface map you can see why today had nice weather, due to the high pressure system to the North East, which explains why the flag was blowing from the east. The low system(s) to the west may approach overnight causing instability.

 There is a great amount of moisture over the mid west states, which will cause precipitation for us in Wisconsin tomorrow.

 Weather stations to our west, in the Dakotas, are experiencing moderate snow fall, and their wind path seems to be headed our direction. You can also see that the Eau Claire area has clear skies, with cloud cover approaching.

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