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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

77°F

UV Index
11 Extreme
Pressure
30.05 Rising
Visibility
8 miles
Dewpoint
44 °F
Humidity
30%
Wind
E 3.3 mph
Gust
7.7 mph
Wind Chill
77 °F

Hourly Forecast

Today
1 PM
77°F
Mostly sunny
Today
2 PM
80°F
Mostly sunny
Today
3 PM
82°F
Mostly sunny
Today
4 PM
84°F
Partly sunny
Today
5 PM
82°F
Intermittent clouds
Today
6 PM
80°F
Intermittent clouds
Today
7 PM
78°F
Intermittent clouds
Today
8 PM
74°F
Partly sunny
Today
9 PM
70°F
Partly cloudy
Today
10 PM
67°F
Partly cloudy
Today
11 PM
64°F
Partly cloudy
Tomorrow
12 AM
62°F
Partly cloudy

7 Day Forecast

Mostly sunny

Thursday

84 °F

Mostly sunny; a nice day for outdoor activities


Intermittent clouds

Thursday Night

54 °F

Partly cloudy


Mostly sunny

Friday

83 °F

Mostly sunny and delightful


Partly cloudy

Friday Night

54 °F

Patchy clouds


Mostly sunny

Saturday

92 °F

Mostly sunny and pleasant


Partly cloudy

Saturday Night

55 °F

Partly cloudy


Partly sunny

Sunday

77 °F

Partly sunny with a thundershower in spots in the afternoon


Mostly clear

Sunday Night

51 °F

Mainly clear


Mostly sunny

Monday

87 °F

Mostly sunny, pleasant and warmer


Clear

Monday Night

52 °F

Clear


Sunrise and Sunset

Sunrise
5:37 AM
Sunset
8:33 PM

Based on AccuWeather data