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DayCAST: Tue 08/28/18

August 28, 2018 / Ben Castellani

Cooler with a chance of rain A cold front moved through overnight and the stage is set for a much cooler day today across the Metro area. While the NAM model has more pronounced cooling for far eastern Colorado (below on right) than the GFS (below on left), the differences are smaller in the Boulder/Denver area. Temperatures won't climb all that …

DayCAST: Sun 08/26/18

August 26, 2018 / Ben Castellani

Sorry for the late post today. It turns out Andrew did not have cellphone internet access at his cabin in Steamboat... Today's weather will be rather mundane, anyways. There is a fairly significant trough digging into the northern Rockies right now. We're far enough away still that warm southwest flow will be controlling our weather. Expect temperatures to reach into …

DayCAST: Sat 08/25/18

August 25, 2018 / Andy

Another warm day and relatively dry. Trough of low pressure remains across the Pacific Northwest with southwesterly flow taking over in Colorado and Utah. A few disturbances pushing northward from New Mexico will increase thunderstorm chances for the High Country and Plains. However, given weak instability and moisture, the chances will be meager at about 10-20% both today and Sunday. …

DayCAST: Fri 08/24/18

August 24, 2018 / Andy

More smoke and warmth today! Below shows today's mid-level pattern. That pesky area of low pressure which brought the wildfire smoke back into the area has pushed into Minnesota. High pressure exists in New Mexico and western Texas, while a secondary trough is over the Pacific Northwest. Under mostly sunny skies today, we should reach near 90 degrees. As mentioned …

DayCAST: Thu 08/23/18

August 23, 2018 / Ben Castellani

Warmer times and smoke lie ahead The cool airmass that was with us the last few days is long gone, replaced now by a warmer northwesterly downslope flow. The 800 mb temperature map below shows the warm air across the Front Range and a big dip in the height line over Colorado this afternoon. This is a lee trough downslope signature. …

DayCAST: Tue 08/21/18

August 21, 2018 / Ben Castellani

Cooler and showery A weak cold front is backing into eastern Colorado today associated with a trough of low pressure in the northern Great Plains. By late morning, the front will be banked right up against the Foothills. The cooler air and southeasterly flow behind the front are visible in the 800 mb temperature map below. This front will push …

DayCAST: Sun 08/19/18

August 19, 2018 / Andy

The area of low pressure in Wyoming brought us some severe storms last evening. In fact, if you missed it, here is a shot of the lightning from north Boulder. The picture (looking southeast toward the storm) doesn't really do it justice. There was some crazy lightning with that storm! That low pressure is now centered in western Nebraska (see …