Marine Weather and Tide Forecast for Holly Hills, CO

DISCUSSION /Through Thursday/
Issued at 216 PM MDT Thu Apr 30 2026

Current radar imagery shows snow showers are picking up over the Front Range. While the latest high-res model guidance has trended drier over the plains and lower elevations, there is still a good chance for snow accumulations between 4 and 10 inches for the high elevation areas under the Winter Weather Advisory. Travel will be poor to hazardous, particularly at the higher passes and as road temperatures cool after sunset.

We decided to lower PoPs a bit over the plains, but there is still a decent chance (50-70%) for a few showers to develop over the Denver metro area this afternoon and early evening. We have also reduced QPF amounts across the region given that we do not expect QPF to be greater than 0.10"-0.20" over Denver. Snow levels around 6500-7000ft this evening may lead to some light snow accumulations on grassy surfaces over the Palmer Divide as well as some slush on pavements.

Snow and rain shower activity will taper off overnight except for a few lingering snow showers over the southern Front Range and Mosquito Range into early Friday morning. There is a small chance (20%) for an afternoon shower over the Denver metro area Friday afternoon as daytime destabilization occurs, but QPF amounts will be limited to no more than a few hundredths.

Warm and dry weather will arrive for the weekend as an upper level ridge sits over Colorado, allowing temperatures to climb into the upper 60s and low 70s over the plains. Cloud cover will increase late Sunday afternoon due to a surge of mid-level moisture from the Pacific. However, it appears that the main source of moisture for next week's unsettled weather will be a a push of moisture sliding down from Alberta into the northern plains as a ridge axis sits over southeast Alaska and a trough strengthens to the east. While it is still too early for specific amounts, Monday evening into Tuesday looks to be the next best chance for measurable snow in the mountains and a few showers over the plains. A cold front will bring cooler temperatures for Tuesday and Wednesday.

AVIATION /00Z TAFS through 00Z Saturday/
Issued at 548 PM MDT Thu Apr 30 2026

A few isolated showers are present across the plains this evening. The airports could see a shower or two, but coverage is expected to remain on the low end, so we left the Prob30 in there for this evening. Rain chances will decrease around 02Z to 03Z, bringing an end to our precip chances for this TAF package.
Ceilings will continue to hover around 2000 to 4000ft for the next few hours, with ceilings slowly improving overnight. Winds overnight through tomorrow morning will generally be from the southwest or light and variable. By late morning tomorrow, winds are expected to shift to the N/NNE.

BOU WATCHES/WARNINGS/ADVISORIES
Winter Weather Advisory until 6 AM MDT Friday for COZ033-034-037.