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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

Cloudy

Cloudy

-4°F

UV Index
0 Low
Pressure
30.32 Steady
Visibility
6 miles
Dewpoint
-13 °F
Humidity
65%
Wind
SSW 2.2 mph
Gust
2.7 mph
Wind Chill
-4 °F

Hourly Forecast

Tomorrow
12 AM
-2°F
Cloudy
Tomorrow
1 AM
-2°F
Cloudy
Tomorrow
2 AM
-2°F
Cloudy
Tomorrow
3 AM
-2°F
Cloudy
Tomorrow
4 AM
-2°F
Cloudy
Tomorrow
5 AM
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Cloudy
Tomorrow
6 AM
-2°F
Cloudy
Tomorrow
7 AM
-2°F
Cloudy
Tomorrow
8 AM
-1°F
Cloudy
Tomorrow
9 AM
-1°F
Cloudy
Tomorrow
10 AM
4°F
Cloudy
Tomorrow
11 AM
8°F
Cloudy

7 Day Forecast

Snow

Saturday

18 °F

Much colder with snow and flurries, accumulating a coating to an inch; storm total snowfall 4-8 inches; streets and sidewalks will be slippery


Cold

Saturday Night

-3 °F

Partly to mostly cloudy and very cold; extreme cold can be dangerous for outdoor activities


Flurries

Sunday

16 °F

Cloudy and cold; a stray flurry in the afternoon; start of a prolonged cold wave; bundle up


Snow

Sunday Night

0 °F

Frigid with snow and flurries at times, accumulating an inch or two; extreme cold can be dangerous for outdoor activities


Partly sunny w/ flurries

Monday

12 °F

A morning flurry; otherwise, mostly sunny and cold


Cold

Monday Night

-9 °F

Clear and bitterly cold; extreme cold can be dangerous for outdoor activities


Mostly cloudy

Tuesday

39 °F

Mostly cloudy and not as cold


Intermittent clouds

Tuesday Night

17 °F

Clearing


Intermittent clouds

Wednesday

38 °F

A blend of sun and clouds


Mostly clear

Wednesday Night

10 °F

Mainly clear


Sunrise and Sunset

Sunrise
7:20 AM
Sunset
5:03 PM

Based on AccuWeather data