May 29, 2014 7:40 AM by Stephen Bowers
High pressure shifting from on top of us yesterday to our east today will bring about an increase in humidity up its western quadrant. The southeasterly wind flow around the southwest side of the high will serve to enhance the upslope breeze this afternoon, so showers and thunderstorms will form in the mountains and move out to the I-25 corridor, especially near the Palmer Divide, this afternoon and evening. Areas along the Lower Arkansas River Valley will more likely stay dry, while higher elevations will benefit from the scattered showers and thunderstorms.
As humidity increases today and tomorrow, expect the air to feel a little heavier. We will stay dry from 7 AM to 10 PM as we warm from near 60 into the 70's near and west of I-25 with 80's on the Southeastern Plains. Nearly everyone is in the 80's by noon with 70's limited to the high elevations and a spot shower or two beginning to develop in the Southern Sangres near La Veta or even Trinidad. Between 2 PM and 5 PM, showers are beginning to rev up in the mountains, but only a few showers are moving out of the mountains with temperatures in the 80's and 90's. From 5 PM to 10 PM a few of those showers escape the mountains and move out toward I-25. Many of those showers will fade, but areas around Colorado Springs could get a brief downpour this evening. Away from the mountains, most spots stay dry.
A mid-level low pressure wave will move across Colorado tomorrow. That will work with the increasing moisture and the persistent upslope breeze to generate more showers and thunderstorms, which likely will be more numerous tomorrow than today. Temperatures respond with some slight and brief cooling. By Saturday the more abundant moisture is exiting our area to leave us with just a few mountain showers. A few of those mountain showers may jump out to I-25, but showers east of the mountains will be sparse. Temperatures will continue to warm Sunday and Monday, but on Tuesday a developing low pressure circulation on top of us will help to draw some slightly cooler air into Southern Colorado from the north.