An area of low pressure is moving through the Gulf of Alaska off the northwest coast of the United States. (See the satellite loop below taken Friday morning.)
Computer models project the low/energy will move southeast in to the Rocky Mountains Saturday. Once in the mountains, a surface low is expected to develop over southeast Colorado Saturday afternoon. As the low moves east, cold air will begin to filter in from the north/northwest.
Almost all of the data suggests moisture will begin to fall in the central mountains of Colorado Saturday. The moisture is expected to move east and southeast over eastern Colorado Sunday afternoon. Both medium-range computer models, the GFS and European forecast agency's model, suggest that moisture will remain in place over eastern Colorado through mid-day Monday.
Overall, the computer models are very bullish with the amount of moisture falling from this system. Here is a look at a 27-computer model average of how much moisture will fall for locations in southeast Colorado through 6pm Monday MT.
- Colorado Springs: 0.70"
- Monument Hill: 1.03"
- La Junta: 0.48"
- Lamar: 0.37"
- Pueblo: 0.61"
- Colorado Springs: 0.52"
- Monument Hill: 0.76"
- La Junta: 0.08"
- Lamar: 0.01"
- Pueblo: 0.13"
Keep in mind this is still a couple days away from happening. Computer models will get a better handle on the storm, the amount of moisture and the timing once it gets better sampling over the land.
|Winter Storm Watch (in blue) Saturday night|
through Monday morning.