Seth's Weather Report

Seth's Weather Report Run by Seth Linden. Career Meteorologist. From Seth's Weather Report, this is now my main page.
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Detailed Colorado Weather Forecasts, Snow Forecast Maps, Severe Weather, Seasonal Outlooks, Fall Forecasts, Outdoors, Skiing, Nature Photos and more.

06/05/26 9am: Happy Friday! Going to be a nice and fairly hot weekend, but a good weekend to be outside with limited thu...
06/05/2026

06/05/26 9am: Happy Friday! Going to be a nice and fairly hot weekend, but a good weekend to be outside with limited thunderstorm chances. A weak cold-front expected Sun evening into Mon, otherwise hot again from Tue-Wed. Then tracking a a colder storm system and some unsettled weather for next week: Thu/Fri (06/11-06/12).

For today, very limited storm chances, a few storms from the Palmer Divide south and in the central mountains after 3pm-9pm, won't be much.

For tomorrow a slightly better chance for storms for both the north-central mountains / front-range mountains and the front-range urban corridor (Den/Bou) from 2pm-8pm, again best chances from Denver south and in the mountains along/south of I-70.

I'll have more soon. (Have a 9am meeting).

First image is forecast radar over the next 60 hours (6am this morning through 6pm Sun) from latest NAM-3im model. Second and third images compare the airmass from Sat (ridge of high-pressure) and then compared to a colder trough / colder air aloft next Thu morning via forecast 700mb temps from GFS.

06/03/26 1:45pm: Getting active in parts of the Front Range mountains and foothills with thunderstorms developing now. M...
06/03/2026

06/03/26 1:45pm: Getting active in parts of the Front Range mountains and foothills with thunderstorms developing now. Mostly all under severe criteria for now, with just brief heavy rain in spots.

These storms are moving east and will impact parts of the front-range urban corridor over the next several hour, but likely stay below severe criteria.

Later a better chance for stronger / severe storms along/east of a line from Greeley to DIA with possible some hail in spots. You can see a few storms starting to form along this boundary (a DCVZ: Denver Cyclone, wind-flow boundary out there) right now.

Latest satellite/radar below.

06/03/26 9:15am: Another chance for some strong to severe storms today for Den/Bou and the front-range with best chances...
06/03/2026

06/03/26 9:15am: Another chance for some strong to severe storms today for Den/Bou and the front-range with best chances along/east of I-25 in the 2pm-8pm timeframe.

First good to see more rain yesterday across Den/Bou. At my house I measured 0.16" of rain.

Here are a few notable rain reports:

Aguilar 7.0 WSW: 0.46"
Arvada 3.6 NW: 0.37"
Westminster 2.5 WSW: 0.30"
Broomfield 2.3 SSW: 0.27"
Pinecliffe 2.5 WNW: 0.21"
Denver 10.3 NW: 0.18"

Anyway, for today, storms will first develop in the front-range mountains and foothills (mostly east of the Cont. Divide) by 1pm, then spread east.

For Den/Bou scattered strong to severe storms mostly from 2pm-6pm.

Strongest storms expected just east of I-25 (Greeley to DIA) and east from 3pm-9pm, some severe storms with hail, heavy rain and wind in spots.

For tomorrow, turning drier and hotter across the state. Just a few isolated high-based storms for the mountains and front-range tomorrow: 3pm-9pm, won't be much.

Turning hot this weekend with high temps getting back into the 90s for Den/Bou for Fri, Sat and Sun.

Cooler weather and better rain chances return next Mon into next week, I'll have more on that later.

First image loop shows forecast radar over the next 14 hours, from now through 10pm this evening from latest HRRR. Second image shows top 24hr rain reports from CoCoRaHS across the state. Third image is forecast slide from Den/Bou NWS office.

06/02/26 1:35pm: Getting active out there with some stronger storms coming off the foothills now. So far all below sever...
06/02/2026

06/02/26 1:35pm: Getting active out there with some stronger storms coming off the foothills now. So far all below severe limits, with just some brief heavy rain, small hail and wind.

These storms are moving due east today and may develop into stronger / severe storms near and east of I-25 after 2-3pm today.

06/02/26 9am: Some big hail and heavy rain in spots from yesterday, especially across part of Denver and the eastern pla...
06/02/2026

06/02/26 9am: Some big hail and heavy rain in spots from yesterday, especially across part of Denver and the eastern plains. As we saw yesterday, several reports of 1-2" hail across parts of Denver and east with some damage in spots (photos 3 and 4 show the hail in Denver yesterday from some group members, mentioned below).

More importantly 0.25" to 0.75" of rain in spots across parts of the Denver metro area and the eastern plains, it was spotty and hit or miss though (tis the nature of strong thunderstorms).

Here are some notable top 24hr rain reports from CoCoRaHS:

Yuma 4.6 N 1.41
Vernon 6.4 WSW 1.15
Aurora 8.5 NNE 1.11
Woodrow 9.7 SSW 1.10
Wray 4.2 NNE 1.00
Denver 1.7 NNE 0.77
Thornton 7.1 N 0.62
Elizabeth 0.4 WSW 0.59
Two Buttes 10.0 NNW 0.56
Longmont 5.1 E 0.55
Highlands Ranch 2.8 SW 0.48
Bellvue 5.9 W 0.48
Denver 6.7 NE 0.42
Highlands Ranch 3.2 SW 0.42
Aurora 0.7 WSW 0.39
Otis 5.7 W 0.35

Anyway, for today another decent chance for some strong to severe storms in/around Den/Bou and east, over the eastern plains 2pm-8pm. Hail could be an issue again today, watch the radar.

Less action west of the Cont. Divide today but a few storms in the mountains as well 1pm-7pm.

First image shows 24hr observed rainfall from MRMS. Second image shows a map of 24hr rain reports over Den/Bou and adjacent areas from CoCoRaHS.

Photo 3: Joe Magnabosco: Cheesman park at 1:30
Photo 4: Sam Hall: Just west of downtown Denver

How much rain or hail did you get? Any damage? Unfortunately my wife's new car, which was parked in Denver yesterday, did have some small hail damage on the hood.

06/01/26 9pm: I'm continuing to see signs of a more active and wetter pattern going forward for Colorado. El Nino contin...
06/02/2026

06/01/26 9pm: I'm continuing to see signs of a more active and wetter pattern going forward for Colorado. El Nino continues to develop in the Pacific, we have additional warm water off the CA coast and the MJO (Madden Julian Oscillation) is getting into a more favorable phase right now (phase 7).

Latest data show SST anomalies of +0.8 degC and climbing in the Nino 3.4 region. Latest climate models are a bit more locked in and now show a strong El Nino (not super duper lol) but still very strong (anomaly of around + 2 degC) peaking by Nov/Dec 2026.

This should keep an active southern branch of the jet-stream going, bringing more frequent storms and moisture into CO (especially in fall into winter, but should help out with summer moisture and monsoon flow as well).

There is also much warmer than average SST's off the southwest coast of CA, not uncommon during El Nino, but this is pretty warm and what it does is put more moisture and energy into the southern branch of the jet-stream pointed at areas across the southwest U.S. into CO (favoring southern CO and NM)... This should help enhance summer thunderstorms and monsoon moisture later.

Lastly the MJO is getting into the more favorable phase 7. The MJO is a semi-permanent area of convection (upward motion and thunderstorms) in the Pacific that moves east to west on a 2-6 week cycle. When this cluster (or area of low pressure) is closer to the western U.S. (like it is in phase 7) this can also enhance the southern branch of the jet-stream and bring more energy, moisture and thunderstorms into the western U.S.

Phase 7 and 8 of the MJO usually bring a more favorable storm pattern to Colorado (more areas of low pressure moving through) but the impacts are more uncertain during the summer when the jet-stream is weak. But could allow for more "spring-like" troughs into mid-summer we shall see.

And generally speaking I am seeing a fairly active pattern over the next 1-2 weeks.

I can tell you one thing overall, I think we are in for some much more wild and wet weather compared to this last year (I mean take today for example with the big hail storm!)

First image shows the latest El Nino SST forecast from the CFSv2 ensemble. Image 3 shows current SST anomalies in the Pacific I circled both the Nino region and the warm water off the CA coast. Third image shows current / observed SST for the Nino 3.4 region.

06/01/26 1:50pm: Some serious storms out there today. All of these Severe Warned storms are producing 1-2" hail in the c...
06/01/2026

06/01/26 1:50pm: Some serious storms out there today. All of these Severe Warned storms are producing 1-2" hail in the core, moving to the east / northeast at about 15-20 mph. Protect your cars if you are in the path. That Denver storm put down some serious hail and another big one coming into Centennial now.

06/01/26 1:15pm Getting active across parts of the front-range now. A strong thunderstorm just developed over Denver, li...
06/01/2026

06/01/26 1:15pm Getting active across parts of the front-range now. A strong thunderstorm just developed over Denver, likely putting down some 0.25" to 0.50" hail in spots. This storm is moving to the east / northeast. Also a strong / severe thunderstorm between Colorado Springs and Black Forest, also putting down some hail in spots (moving to the east/northeast).

Expect some strong storms in spots over the next couple hours. Areas near/along I-25 should watch the radar for some bigger hail in spots.

06/01/26 9am: Morning, its Monday, but at least its the first day of meteorological summer (June 1st). In early summer f...
06/01/2026

06/01/26 9am: Morning, its Monday, but at least its the first day of meteorological summer (June 1st). In early summer fashion we have a chance for some stronger thunderstorms in spots today.

Thunderstorms will first form near the foothills and over parts of Den/Bou after 1pm today. With a chance for isolated to scattered storms across the front-range urban corridor mostly from 2pm-6pm.

Stronger thunderstorm will develop east / southeast of Denver today. There is a threat of severe storms with up to 1" hail, heavy rain, strong wind and a brief tornado in the 3pm-9pm timeframe mostly east of a Greeley to DIA to Parker to east Springs line. Strong storms over the east / northeast plains this evening.

You can see where the biggest risk for large hail, an isolated tornado this afternoon on the maps below (DIA east, and most of northeast CO).

In the mountains most of the action today will be well east of the Cont. Divide (really from the front-range foothills and east), so not much. A better chance tomorrow.

On Tuesday: rinse, wash, repeat, pretty similar. Strong storms in spots, mostly over eastern CO in the 2pm-8pm timeframe, favoring southeast CO again. More on that later.

First image loop shows forecast radar over the next 18 hours (for today into early tomorrow). Second image is forecast slide from Den/Bou NWS officed (yellow area has highest chance for severe thunderstorms). Images 3 and 4 show the hail risk and tornado risk for today.

05/31/26 10:15am: Happy Sunday! I can't believe its the last day of May, the last day of meteorological spring! Summer i...
05/31/2026

05/31/26 10:15am: Happy Sunday! I can't believe its the last day of May, the last day of meteorological spring! Summer is here. Anyway, lets take a look at what we can expect weather wise this week.

Models show a surge of early monsoon moisture moving into the state from the south/southeast Tue-Thu and this will bring increased thunderstorm chances for parts of southern CO and the front-range (Den/Bou) this week, starting Mon afternoon. First image I show where best thunderstorm chances will be this week, 1pm-8pm each day.

- Overall pretty dry today, just a few isolated storms over parts of the northwest / north-central mountains (after 2pm) and near the Palmer Divide and east (after 4pm). Most areas stay dry. Breezy but nice

- Models show a little cool-front moving into northeast CO tomorrow afternoon and this surge of northeast upsloe, combined with a short-wave aloft, will bring better storm chances to parts of the front-range (Den/Bou) and eastern plains tomorrow from 1pm-8pm. Best chances from Denver south and east and especially near/along the Palmer Divide and east.

- Some strong / severe storms expected over eastern / northeast CO tomorrow afternoon, mostly after 3pm

- Then moisture increases on Tue. Initially on Tue, after 12pm the focus for storms will be over parts of southern CO: San Juans and especially the Sangres and east onto the southeast plains.

- But then another good chance for storms for Den/Bou and the front-range on Tue afternoon from: 3pm-9pm

- Then biggest surge of moisture likely on Wed (but again favoring areas east of the Cont. Divide and parts of southern CO)

- So for Den/Bou, foothills and the front-range another good chance for storms on Wed afternoon: 2pm-8pm primarily

- For the north-central mountains also an increased chance for thunderstorms on especially Tue and Wed but the focus will be from Summit Co east (including Summit, ClearCreek, Grand, western Boulder/Larimer counties) from 1pm-7pm each day

- Less chances west of Vail Pass. Unfortunately looking quite dry across western CO during this stretch but some isolated storms in spots each day

- We will still with continued storm chances over the eastern half o the state on Thu as well, detail need to be worked out (1pm-8pm again)

First image shows forecast total liquid precip from now through 6am Fri from latest NWS Blend of Models, take amounts with big grain of salt (convection) but it gives general idea of where best rain/thunderstorm chances will be. Image 2 is a loop showing forecast Precipitable Water Anomaly over the next 6-7 days from the GFS, we look for the deeper greens moving into CO. Third image shows forecast radar at 5pm tomorrow from latest NAM-3km model, showing the chance for strong storms in spots (near PD).

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