BoulderCAST Weather 🏔️⛈️
@bouldercast.com
The official BlueSky account of BoulderCAST, a team of local meteorologists that forecast Boulder and Denver weather as well as nearby mountain conditions.
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Colorado Forecast Update: Damaging winds and near-critical fire danger for the Front Range on Wednesday, planned Xcel power shutdowns are highly likely
If you thought Monday’s sunshine was the start of a quiet week, think again. The next 48 hours will bring a dramatic shift in our weather —starting with breezy but pleasant conditions Tuesday, then es...
bouldercast.com
UPDATE: Damaging winds and critical fire danger for the Front Range on Wednesday, planned Xcel power shutdowns are highly likely 💨🚩🔥
We break down when/where the strongest 80+MPH winds will hit & how this event compares to the Marshall Fire day: bouldercast.com/colorado-for... #COwx #Colorado
We break down when/where the strongest 80+MPH winds will hit & how this event compares to the Marshall Fire day: bouldercast.com/colorado-for... #COwx #Colorado
⚡️POWER SHUTDOWN UPDATE: Xcel is projecting to cut power Wed Dec. 17, at ~10AM impacting ~50,000 customers in Boulder, Clear Creek, Jefferson, Larimer & Weld counties.
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
December 17, 2025 at 12:36 AM
⚡️POWER SHUTDOWN UPDATE: Xcel is projecting to cut power Wed Dec. 17, at ~10AM impacting ~50,000 customers in Boulder, Clear Creek, Jefferson, Larimer & Weld counties.
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
Reposted by BoulderCAST Weather 🏔️⛈️
This would be the second preemptive shutdown from Xcel in #Boulder County. Here’s what to know. boulderreportinglab.org/2025/12/16/x...
Xcel plans power shutoff in Boulder on Dec. 17 ahead of extreme fire risk
While Xcel is still finalizing the outage scope, maps by the utility suggest it could affect around 100,000 customers in Boulder County.
boulderreportinglab.org
December 16, 2025 at 8:03 PM
This would be the second preemptive shutdown from Xcel in #Boulder County. Here’s what to know. boulderreportinglab.org/2025/12/16/x...
Comparison of the wind forecast from the last time Xcel cut power in Boulder (April 2024) with the wind event on Wednesday Dec 17th where power will likely also be cut #COwx
December 16, 2025 at 10:41 PM
Comparison of the wind forecast from the last time Xcel cut power in Boulder (April 2024) with the wind event on Wednesday Dec 17th where power will likely also be cut #COwx
📩 Join thousands of other Front Range weather enthusiasts and subscribe to our FREE email list. You'll receive instant email notifications of our storm updates, weekly outlooks, recaps, seasonal updates & more (~1-2 emails per week)
➡️ bouldercast.com/subscribe/ #COwx #colorado
➡️ bouldercast.com/subscribe/ #COwx #colorado
December 16, 2025 at 7:41 PM
📩 Join thousands of other Front Range weather enthusiasts and subscribe to our FREE email list. You'll receive instant email notifications of our storm updates, weekly outlooks, recaps, seasonal updates & more (~1-2 emails per week)
➡️ bouldercast.com/subscribe/ #COwx #colorado
➡️ bouldercast.com/subscribe/ #COwx #colorado
The TL;DR from today's rather lengthy forecast discussion for what will be a high impact (though short lived) downslope wind event and fire risk #COWx #Colorado #RedFlagWarning #HighWindWarning #Denver #boulder #cofire
December 16, 2025 at 6:57 PM
The TL;DR from today's rather lengthy forecast discussion for what will be a high impact (though short lived) downslope wind event and fire risk #COWx #Colorado #RedFlagWarning #HighWindWarning #Denver #boulder #cofire
UPDATE: Damaging winds and critical fire danger for the Front Range on Wednesday, planned Xcel power shutdowns are highly likely 💨🚩🔥
We break down when/where the strongest 80+MPH winds will hit & how this event compares to the Marshall Fire day: bouldercast.com/colorado-for... #COwx #Colorado
We break down when/where the strongest 80+MPH winds will hit & how this event compares to the Marshall Fire day: bouldercast.com/colorado-for... #COwx #Colorado
Colorado Forecast Update: Damaging winds and near-critical fire danger for the Front Range on Wednesday, planned Xcel power shutdowns are highly likely
If you thought Monday’s sunshine was the start of a quiet week, think again. The next 48 hours will bring a dramatic shift in our weather —starting with breezy but pleasant conditions Tuesday, then es...
bouldercast.com
December 16, 2025 at 5:47 PM
UPDATE: Damaging winds and critical fire danger for the Front Range on Wednesday, planned Xcel power shutdowns are highly likely 💨🚩🔥
We break down when/where the strongest 80+MPH winds will hit & how this event compares to the Marshall Fire day: bouldercast.com/colorado-for... #COwx #Colorado
We break down when/where the strongest 80+MPH winds will hit & how this event compares to the Marshall Fire day: bouldercast.com/colorado-for... #COwx #Colorado
Those located inside the dotted lines could be impacted by Xcel's Public Safety Power Shutdown on Wednesday December 17th due to high wind risk.
This includes more than 500,000 Colorado homes which could be without power for at least 12 hours, likely longer. #COWx #Colorado
This includes more than 500,000 Colorado homes which could be without power for at least 12 hours, likely longer. #COWx #Colorado
December 15, 2025 at 8:33 PM
❗️High Wind Watch posted preemptively for Wednesday in the Mountains, Foothills and western suburbs, including Boulder (but not Denver). Gusts up to 90 MPH possible. Beginning Wednesday A.M. up high, spreading east/downhill quickly thereafter. Fire danger will be high until the evening front. #COWX
December 15, 2025 at 8:27 PM
❗️High Wind Watch posted preemptively for Wednesday in the Mountains, Foothills and western suburbs, including Boulder (but not Denver). Gusts up to 90 MPH possible. Beginning Wednesday A.M. up high, spreading east/downhill quickly thereafter. Fire danger will be high until the evening front. #COWX
Overshadowed by the extreme windstorm that occurred on the day of the #MarshallFire, many forget there was nearly as impressive of a windstorm 2 weeks prior on 12/15/2021 which had 90-105 MPH gusts & a rainbow-inducing squall line.
Our forecast from the day: bouldercast.com/brace-for-im... #COwx
Our forecast from the day: bouldercast.com/brace-for-im... #COwx
BRACE FOR IMPACT: Our final thoughts as a brief snow squall & hurricane-force winds bear down on the Front Range!
Things are about to start rocking and rolling across the Front Range as a potent storm system rapidly races across Colorado early this morning. Here's the latest update on the timing of everything, wh...
bouldercast.com
December 15, 2025 at 6:10 PM
Overshadowed by the extreme windstorm that occurred on the day of the #MarshallFire, many forget there was nearly as impressive of a windstorm 2 weeks prior on 12/15/2021 which had 90-105 MPH gusts & a rainbow-inducing squall line.
Our forecast from the day: bouldercast.com/brace-for-im... #COwx
Our forecast from the day: bouldercast.com/brace-for-im... #COwx
Xcel Energy now advertising a potential a Public Safety Power Shutoff targeting customers along the Front Range beginning on Wednesday Dec. 17 around noon due to the increased fire danger.
More details here: co.my.xcelenergy.com/s/outage-saf... #COwx #Cofire #Colorado #Denver #boulder #RedFlag
More details here: co.my.xcelenergy.com/s/outage-saf... #COwx #Cofire #Colorado #Denver #boulder #RedFlag
December 15, 2025 at 4:09 PM
This Week in Colorado Weather: A very warm and dry lead up to Christmas with intermittent high fire danger 🥵🔥🎄
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
December 15, 2025 at 3:16 PM
This Week in Colorado Weather: A very warm and dry lead up to Christmas with intermittent high fire danger 🥵🔥🎄
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
🏆❄️ Congrats to the winners of the 2025 BoulderCAST First Snowfall Contest.
Official Boulder verification was November 29th at 0.3".
Prizes have been sent out, but you can check if you won here: bouldercast.com/announcing-t... #COWx #snow
Official Boulder verification was November 29th at 0.3".
Prizes have been sent out, but you can check if you won here: bouldercast.com/announcing-t... #COWx #snow
Announcing the 2025 First Snowfall Contest Winners
Apologies for the delay, but with Boulder's record-shattering latest first snow of the season officially in the bag back on November 29th, it's time to announce the winners of our 11th Annual First Sn...
bouldercast.com
December 14, 2025 at 12:41 AM
🏆❄️ Congrats to the winners of the 2025 BoulderCAST First Snowfall Contest.
Official Boulder verification was November 29th at 0.3".
Prizes have been sent out, but you can check if you won here: bouldercast.com/announcing-t... #COWx #snow
Official Boulder verification was November 29th at 0.3".
Prizes have been sent out, but you can check if you won here: bouldercast.com/announcing-t... #COWx #snow
The December that has felt like October continues with bone dry and unseasonable warmth persisting into next week (or longer). The Front Range is heading towards a brown Christmas
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
December 12, 2025 at 3:52 PM
The December that has felt like October continues with bone dry and unseasonable warmth persisting into next week (or longer). The Front Range is heading towards a brown Christmas
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
December 12, 2025 at 3:29 PM
The unrelenting west downslope winds have kept temperatures at our station above 60° for the last ~24 hours, peaking at 66°F this A.M.
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
December 12, 2025 at 12:30 AM
The unrelenting west downslope winds have kept temperatures at our station above 60° for the last ~24 hours, peaking at 66°F this A.M.
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
🔥 RED FLAG WARNING UNTIL SUNSET THURSDAY ⚠️
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
December 11, 2025 at 6:38 PM
🔥 RED FLAG WARNING UNTIL SUNSET THURSDAY ⚠️
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
BoulderCAST Daily – Wed 12/10/25 | A recap of the Foothills windstorm and a look at what’s next (spoiler: more wind): bouldercast.com/bouldercast-... #COwx #colorado #HighWindWarning
December 10, 2025 at 2:45 PM
BoulderCAST Daily – Wed 12/10/25 | A recap of the Foothills windstorm and a look at what’s next (spoiler: more wind): bouldercast.com/bouldercast-... #COwx #colorado #HighWindWarning
Last week's snowstorm dumped 9.1" in Boulder, all within the single calendar day for December 3rd.
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
December 9, 2025 at 10:20 PM
Last week's snowstorm dumped 9.1" in Boulder, all within the single calendar day for December 3rd.
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
December 9, 2025 at 8:58 PM
HIGH WIND WARNING **CANCELLED** FOR AREAS BELOW 6000 FEET
Peak gusts in Boulder so far...
NCAR Mesa: 44 MPH
NCAR Foothills: 31 MPH
BoulderCAST Station: 29 MPH
Boulder Airport: 29 MPH
CU East Campus: 27 MPH
#COwx #Boulderwx
Peak gusts in Boulder so far...
NCAR Mesa: 44 MPH
NCAR Foothills: 31 MPH
BoulderCAST Station: 29 MPH
Boulder Airport: 29 MPH
CU East Campus: 27 MPH
#COwx #Boulderwx
December 9, 2025 at 7:27 PM
HIGH WIND WARNING **CANCELLED** FOR AREAS BELOW 6000 FEET
Peak gusts in Boulder so far...
NCAR Mesa: 44 MPH
NCAR Foothills: 31 MPH
BoulderCAST Station: 29 MPH
Boulder Airport: 29 MPH
CU East Campus: 27 MPH
#COwx #Boulderwx
Peak gusts in Boulder so far...
NCAR Mesa: 44 MPH
NCAR Foothills: 31 MPH
BoulderCAST Station: 29 MPH
Boulder Airport: 29 MPH
CU East Campus: 27 MPH
#COwx #Boulderwx