Major Winter Storm on December 19, 2011

A powerful winter storm moved out of New Mexico and west Texas on Monday December 19th and continued into early Tuesday December 20th.  Heavy rainfall was reported in many areas before changing to sleet and snow.  In much of eastern Colorado and far western Kansas the precipitation fell all as snow and very heavy snow was reported.  In addition strong north winds of 30 to 45 mph caused blizzard conditions and snow drifts of 8 to 10 feet were report in some areas, especially near the Colorado border.  Many roads/highways were closed across the western third of the area.

Click on the following map for a larger version.

snowfall map 

The following is a satellite image taken the following day and shows the extensive snowfield and also shows the areas that received little if any snow.  Click on the image for a larger version.

Satellite image showing the snow

 The following map is a display of rain amounts or snow and ice water equivalent (melted down to measure).  Keep in mind that calculating water equivalent in snow is very  challenging when there is so much wind.  Thus, some actual amounts may be higher where there was significant blowing and drifting. (click for larger version)

rainfall and melted snow and ice



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