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The Front Range Forecast: Afternoon storms some severe

In Brief:

Afternoon thunderstorms return, some severe. Summer heat next week.

The Forecast Discussion:

Moisture is returning (Figure 3) from the Gulf of Mexico and temperatures rise.  This means afternoon thunderstorms will become the norm again (Figure 1). An approaching trough (Figure 2) Wednesday will allow some of these storms to reach severe levels with damaging straight line winds and large hail being the primary threats (Figure 4).  Thursday will also see severe weather close or along I-25 again. Make sure your weather apps have notifications turned on!

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Figure 1: the 10 day graphical forecast for Longmont from weatherunderground.com
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Figure 2: The 500mb forecast upper air map for Thursday PM from the GFS and tropicaltidbits.com
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Figure 3: The pricipitatable water forecast map for Wednesday AM from the GFS and tropicaltidbits.com
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figure 4: the Day 2 severe weather forecast map from the NWS and the SPC for Wednesday.

The Longer Range Forecast:

A strong ridge builds over the West by the end of the weekend taking us to summer-like temperatures (Figure 1).  Rainfall, over the next 5 days is spotty and largely confined to the eastern half of the state. 

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Figure 5: the 5 day precipitation forecast 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

Sunny

Sunny

62°F

UV Index
4 Moderate
Pressure
30.41 Steady
Visibility
5 miles
Dewpoint
32 °F
Humidity
32%
Wind
NNE 1.7 mph
Gust
3.8 mph
Wind Chill
62 °F

Hourly Forecast

Today
12 PM
66°F
Mostly sunny
Today
1 PM
69°F
Sunny
Today
2 PM
71°F
Sunny
Today
3 PM
74°F
Sunny
Today
4 PM
76°F
Sunny
Today
5 PM
78°F
Sunny
Today
6 PM
75°F
Mostly sunny
Today
7 PM
70°F
Mostly clear
Today
8 PM
65°F
Mostly clear
Today
9 PM
61°F
Mostly clear
Today
10 PM
58°F
Mostly clear
Today
11 PM
56°F
Mostly clear

7 Day Forecast

Sunny

Sunday

78 °F

Sunny and not as warm but pleasant


Mostly clear

Sunday Night

43 °F

Mainly clear


Mostly sunny

Monday

86 °F

Mostly sunny and warmer


Clear

Monday Night

46 °F

Clear


Partly sunny

Tuesday

84 °F

Partly sunny and very warm


Partly cloudy

Tuesday Night

47 °F

Partly cloudy


Mostly sunny

Wednesday

83 °F

Mostly sunny and warm with the temperature approaching the record of 86 set in 1915


Clear

Wednesday Night

46 °F

Clear


Mostly sunny

Thursday

88 °F

Sunny to partly cloudy and very warm with the temperature tying the record from 1926


Mostly clear

Thursday Night

49 °F

Mainly clear


Sunrise and Sunset

Sunrise
7:03 AM
Sunset
6:33 PM

Based on AccuWeather data