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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

85°F

UV Index
5 Moderate
Pressure
29.73 Falling
Visibility
8 miles
Dewpoint
52 °F
Humidity
32%
Wind
SW 1.6 mph
Gust
7.3 mph
Wind Chill
85 °F

Hourly Forecast

Today
10 AM
88°F
Sunny
Today
11 AM
91°F
Mostly sunny
Today
12 PM
93°F
Mostly sunny
Today
1 PM
95°F
Mostly sunny
Today
2 PM
97°F
Mostly sunny
Today
3 PM
99°F
Mostly sunny
Today
4 PM
98°F
Mostly sunny
Today
5 PM
96°F
Mostly sunny
Today
6 PM
94°F
Mostly sunny
Today
7 PM
92°F
Mostly sunny
Today
8 PM
87°F
Mostly sunny
Today
9 PM
82°F
Mostly clear

7 Day Forecast

Mostly sunny

Sunday

99 °F

Mostly sunny and hot; stay hydrated when outside in the heat


Mostly clear

Sunday Night

64 °F

Mainly clear and mild


Partly sunny

Monday

97 °F

Hot with sun and some clouds; unattended vehicles can become dangerously hot


Mostly clear

Monday Night

63 °F

Clear to partly cloudy and mild


Mostly sunny

Tuesday

98 °F

Mostly sunny and hot


Mostly clear

Tuesday Night

61 °F

Clear to partly cloudy


Partly sunny

Wednesday

95 °F

Partly sunny with a thunderstorm around in the afternoon


Intermittent clouds

Wednesday Night

65 °F

Partly cloudy and mild


Intermittent clouds

Thursday

94 °F

Sun and areas of high clouds and very warm


Partly cloudy

Thursday Night

64 °F

Partly cloudy and mild


Sunrise and Sunset

Sunrise
5:32 AM
Sunset
8:34 PM

Based on AccuWeather data