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The 2013 Boulder Flood: Four years and three billion dollars later

Four years ago this week, torrential rains fell across the Front Range, triggering one of the worst floods in Colorado’s short recorded history, accompanied by a staggering repair bill now approaching $3 billion. With Boulder County at the epicenter of the disaster, the road to recovery has been long and arduous, and still continues today. We take a look back at this historic event, explain how it happened, and provide an update on related analysis performed since.

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When will Boulder’s first snow occur? Enter for a chance to win!

3rd Annual BoulderCAST First Snow Contest
*This contest is now closed to entries*

Are you eager for the first snow of the season? Have you already waxed your skis and purchased your Epic Pass? Our first big snow could be right around the corner! We provide a brief overview of Boulder’s first snowfall climatology and then pose a question…“When will Boulder’s first snow occur this year?” Submit your guess for not only a chance to win recognition among local weather enthusiasts, but prizes too. Those who get closest to the date of our first snow win. Read on for all the details.

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DayCAST: Thu 09/14/17

Today will bring the best chance of precipitation for the week to the Front Range as a small but potent wave treks across western Colorado.

The 500 mb vorticity map below shows a autumn-like trough digging into the Pacific Northwest (big “L”), and also the small wave moving through Utah and western Colorado tonight (little “L”). Moisture in eastern Colorado, especially at the lower levels, will be fairly low today and tonight. The bulk of the precipitation will remain in western Colorado and Wyoming.  However,  there will be a decent chance of storms today across the Metro area…maybe 20% between 3PM and midnight this evening as the disturbance approaches.  Highs will be cooler today in the low to middle 80’s with mostly cloudy skies developing by afternoon.

This big trough across the Northwest is actually cold enough for snow in the higher elevations of western Wyoming and Montana! Those wondering when snowfall may return to our Mountains should keep an eye on the middle of next week as ensembles are coming into agreement for an even colder and deeper trough developing across the West…

LEFT: 500 mb height anomaly for the middle of next week from the ECMWF. RIGHT: GFS ensemble 850 mb temperature anomaly


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This week in weather: September 11, 2017

A warm and fairly dry week is expected across the Front Range. However, we’re once again watching the tropics this weekend for another East Coast landfall and one storm which could impact Colorado. Read on for details.

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We just need to survive one more day of smoke!

The winds are shifting and the smoke will soon be departing our region. Read on for details.

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Hurricane Irma to make landfall in Florida?

As the nation braces for impact of another major tropical cyclone, we update you on the status of Hurricane Irma. Where is she headed and when will she arrive? Read on to find out.

DISCLAIMER: This update was created Wednesday, September 6, 2017. Any life-sustaining decisions regarding Irma should be made on your own accord following the most up to date guidance from the local emergency authorities. 

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This week in weather: September 5, 2017

The week ahead starts off feeling like autumn thanks to yesterday’s cold frontal passage. We are rather quiet for the most part with only a slight chance of storms late in the week as temperatures moderate back into the 80’s. More details can be found within, including when we expect the wildfire smoke to exit the region.

We also provide thoughts on Category 5 Hurricane Irma which could be making landfall in Florida this weekend.

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Our delightful Labor Day weekend forecast

It’s been nearly two weeks in Boulder since our last measurable rainfall. Labor Day weekend will continue this trend with generally dry and at times, hot conditions prevailing across the state of Colorado. We provide our forecast of the entire holiday weekend for the Metro area and the Mountains.

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This week in weather: August 28, 2017

The week ahead will be generally quiet across Colorado’s Front Range with large scale ridging in place and the window for monsoon moisture quickly waning. Read on to find out which day we think offers the best chance of rain.

We also provide thoughts on the recent landfall of Category 4 Hurricane Harvey in Texas.

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How our weather changed during the eclipse

With the Great American Eclipse of 2017 now behind us, we take a look back at the impacts that the moon’s shadow had on our temperature during the once-in-a-lifetime event!

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This week in weather: August 21, 2017

After a warm weekend, the chance of thunderstorms returns to the region this week, along with somewhat cooler temperatures. What days will likely see the best chance? Read on to find out. We also discuss the eclipse today and the threat of clouds hampering the viewing party!

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The Evolving Eclipse Forecast: Colorado, Wyoming, or Nebraska? (Updated Aug 20)

Follow along with us as we provide forecasts leading up to the total solar eclipse on Monday, August 21st for Colorado, Wyoming, and Nebraska. We’re here to help you decide where the best drive-able viewing will be.

*Forecast updates will be included in this post, as needed*

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What can weather radars tell us about bats?

We examine the fascinating amount of information about bats that can be gleaned from their signatures on weather radars!

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