The Dance of the Summer Upper Level Ridge

Forecast Discussion

The forecast this week, as it will be for much of the summer, is driven by a warm ridge of high pressure, which is currently located of the Western United States. Nederland and the Colorado Front Range are currently on the east side of this ridge which places the area under a northwesterly upper wind flow. Moisture and pieces of weak upper level energy will result in the  possibility of afternoon and evening thunderstorms on Monday and again on Tuesday. The ridge will push slightly eastward by Tuesday resulting in warmer temperatures. Tuesday will be the warmest day of the week with temps nearing 80 in Ned. By Wednesday, Pacific energy will begin to erode the ridge and force it to retrograde (move westward). This will allow cooler air and more moisture to push into Northeastern Colorado.   This will increase chances of afternoon and evening thunderstorms Wednesday and Thursday. Friday and Saturday look to be decent days with near normal temperatures and only isolate afternoon showers. Monsoonal moisture may begin to infiltrate the region by Sunday.


Monday: Morning sunshine mixing with afternoon clouds. A brief and isolated afternoon thunderstorm is possible. High 77. Light winds becoming NE 5-12 mph.

Monday Night: Partly Cloudy. Low 51. Light winds

Tuesday: Mostly Sunny early with a few afternoon clouds. Hot. High 80. Winds WNW 5-12 mph.

Wednesday: Showers and thunderstorms possible in the afternoon. Cooler.  High 75. Winds becoming NE 5-12 MPH.

Thursday: Showers and thunderstorms possible in the afternoon. High 73. Winds NE 5 – 12 MPH

Friday: Plenty of sunshine. Slight chance of a late day shower. High 75.



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