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Sunday Update: The Front Range Forecast: Wandering Thunder

In Brief:

Warm temperatures and afternoon storms set up.

Sunday Update:

Temperatures are quite warm this week with moisture coming into the state from the Gulf. We'll see afternoon thunderstorms most days with a bit more of a cool down and more water Wednesday with a brief cool front passage.

Spring is settling in.  I'm thinking that any I-25 snow, between now and June, is looking very unlikely.

figure1u_05122024
Figure 1 update: the 10 day graphical forecast for Longmont from weatherunderground.com

End Sunday Update.

The Forecast Discussion:

A short wave ridge is moving in pushed by a short wave trough (Figure 2) that will rapidly warm us up this weekend (Figure 1), then brings fairly strong winds to the Front Range (Figure 3) Monday and Tuesday. See the Longer Range Forecast, below, for the end of the week.

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Figure 1: the 10 day graphical forecast for Longmont from weatherunderground.com
 
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Figure 2: the 500mb upper air map for Monday from the GFS and tropicaltidbits.com

 

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Figure 3: the surface wind speed forecast map from the GFS and weather5280.com

 

The Longer Range Forecast:

The next 5 days sees precipitation (rain and snow - Figures 4 and 5) confined to the mountains. A broad trough and cut-off low moves in for the end of the week bringing us an extended period of cool wet weather.  I don't see any snow for I-25 folks through mid-month. Was that "it" for snow this side of Summer?

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Figure 4: the precipitation forecast map from the GFS and weather5280.com
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Figure 5: the 10:1 ratio snowfall forecast map from the GFS and weather5280.com

 


About the Author: John Ensworth

John Ensworth used to work from Longmont as the PI for the NASA through the IGES (The Institute for Global Environmental Strategies). He now teaches technology, algebra, astronomy, meteorology, film school, and Lego robotics to middle/high school.
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Current Weather

Partly sunny

Partly sunny

52°F

UV Index
1 Low
Pressure
29.74 Steady
Visibility
8 miles
Dewpoint
29 °F
Humidity
40%
Wind
SE 1.6 mph
Gust
5.1 mph
Wind Chill
52 °F

Hourly Forecast

Today
10 AM
51°F
Intermittent clouds
Today
11 AM
55°F
Mostly cloudy
Today
12 PM
59°F
Mostly cloudy
Today
1 PM
62°F
Mostly cloudy
Today
2 PM
60°F
Mostly cloudy
Today
3 PM
57°F
Mostly cloudy
Today
4 PM
53°F
Mostly cloudy
Today
5 PM
49°F
Cloudy
Today
6 PM
45°F
Showers
Today
7 PM
42°F
Cloudy
Today
8 PM
39°F
Cloudy
Today
9 PM
36°F
Snow

7 Day Forecast

Partly sunny w/ showers

Sunday

62 °F

Mild with intervals of clouds and sunshine, turning windy this afternoon with a passing shower or two


Snow

Sunday Night

25 °F

Periods of snow, accumulating 1-3 inches; untreated surfaces will be slippery late


Mostly cloudy

Monday

47 °F

Turning cloudy; cooler; holiday travel disruptions from an impactful storm expected later this week; check AccuWeather often


Intermittent clouds

Monday Night

27 °F

Partly cloudy


Mostly cloudy

Tuesday

50 °F

Mostly cloudy


Cloudy

Tuesday Night

29 °F

Cloudy


Snow

Wednesday

36 °F

Occasional wet snow, accumulating an inch or two; snow can make roads and sidewalks slippery, disrupting travel


Mostly cloudy w/ flurries

Wednesday Night

16 °F

A little snow in the evening with little or no accumulation; otherwise, becoming clear and colder; storm total snowfall an inch or two; roads could be slippery


Sunny

Thursday

39 °F

Plenty of sunshine, but cold


Mostly clear

Thursday Night

14 °F

Mainly clear


Sunrise and Sunset

Sunrise
6:57 AM
Sunset
4:37 PM

Based on AccuWeather data