Friday, March 15, 2013

Spring to Winter to Spring: Snow for St. Patty's Day!


Hope you enjoyed the Spring weather this week, back to Winter weather in the Pacific Northwest  & northern Rockies for Saint Patrick’s Day Weekend.

The Ridge of High pressure that brought warm & dry weather this past week to the West & Rockies  gets flattened out and a Westerly flow develops from the Pacific Northwest across the Northern Rockies and into the Plains States, with gradually cooling temps.

A small, but very strong Low pressure system will move across the Pacific Northwest on Saturday, and be over Idaho Saturday night, with a strong cold front passing thru Western Wyoming on Sunday.

This potent little weather system will bring a pretty good shot of snow and much colder temps across the Pacific Northwest .

For the Jackson Hole Area, expect between 6 & 12 inches at higher elevations of the Tetons and 2 to 4 inches at lower elevations from overnight Saturday and thru the day on Sunday. Other mountain areas do pretty well also. (See forecast weather map and snowfall forecast map below.)

Snow showers linger early next week……..then on Wednesday, the First Day of Spring, a larger Low pressure system moves into the NW US with warmer temps initially, then another cold front plows across the Northern Rockies on Thursday. Bringing more snow & colder temps again the end of the week.  Looks like High pressure builds back over us for next weekend, with temps warming again.

Sunday March 17, 2013 Forecast Weather Maps

Surface Map for Sunday
Total Snowfall thru Sunday Evening


Post by meteorologist Jim Woodmencey
Graphics from NWS

1 comment :

  1. Good to know winter is coming back. Do you know how plane traffic affects the weather? I've read that over 90k planes crisscross North America every day and many of them leave lingering trails that spread out and form high heat-trapping cirrus clouds. We certainly had a high haze throughout the recent heat wave... http://www.oilfreefun.com/2013/03/losing-snowpack-rapidly-consider-this.html?utm_source=BP_recent

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