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DayCAST: Wed 07/10/19

July 10, 2019 / Ben Castellani

A pleasant mid-week lull The upper-level ridge of high pressure near the Four Corners region is drifting a bit further to the west than models were showing a few days ago. As a result, this will keep most of Colorado in a west or west-northwest flow regime....significantly hampering the chance for showers and storms across the area both today and tomorrow thanks …

DayCAST: Tue 07/09/19

July 9, 2019 / Ben Castellani

Zero percent Today is the only day this week that will offer a ZERO percent chance of rain around Boulder and Denver. Drier west-southwest flow has downsloped into the Front Range, effectively scouring out the low-level moisture that has been with us for the better part of a week now. Precipitable water values are down around 0.5 inches today which will allow for …

DayCAST: Sun 07/07/19

July 7, 2019 / Andy

Partly Sunny skies today thanks to more clouds sticking around today. Not much has changed in the overall pattern, with a constant trough in Washington state, and a ridge to our southeast, keeping us in that southwest flow aloft. There are, however, some differences in the models in regards to precipitation. We'll see highs near the middle 80's with scattered …

DayCAST: Sat 07/06/19

July 6, 2019 / Andy

More hail reports from yesterday's severe thunderstorms. The below picture was a hailstone observed in Gunbarrel, Colorado. It was approximately quarter size. However, larger hail sizes were reported just east of Boulder, such as Lafayette (below), with up to 2.5 to 3" diameter hail. There likely will be some damaged cars, similar to last summer. That reminds me, I should …

DayCAST: Fri 07/05/19

July 5, 2019 / Andy

We hope you had a fun and safe 4th of July yesterday. A portion of the BoulderCAST team went to Red Rocks for the concert. We also saw the fireworks in the east as an icing on the cake (below). Of course, we also had to deal with some storms toward the latter part of the night - some brief …

DayCAST: Thu 07/04/19

July 4, 2019 / Ben Castellani

Minor chance of storms, supercells north and east With the large-scale pattern remaining remarkably unchanged once again today, most of our area will experience the same exact weather that we had yesterday: morning sun, increasing clouds, isolated late-day weak storms, and temperatures topping out in the lower 90's. We do have a possible game-changer moving into far northeast Colorado this …

DayCAST: Wed 07/03/19

July 3, 2019 / Ben Castellani

An interesting pattern has taken shape across the western and central United States right now. Today's 500 mb height anomaly forecast map is shown below from the GFS model. Look at all of the blue coloring across the entire area. These below normal heights are typically found in troughs. However, on the contrary, ridging is present across Colorado today. We're …