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Tuesday update: The Front Range Forecast: Severe still!

In Brief:

Severe weather again today then dry. 

Tuesday update:

Amazingly, the afternoon severe weather chances continue now into the second week of August (Figure 2 update). The risk near I-25 and in the mountains is for hail and high winds.  Just a bit east of I-25, there is a chance of an isolated tornado or two. As always, keep an eye out to the western/northwestern sky this afternoon. It looks like we get a break Wednesday!

 

figure2u_08082023
Figure 2 update: the Day 1, Tuesday SPC severe weather forecast.

End Tuesday update.

Sunday update:

High surface moisture levels and favorable wind directions and speeds throughout the atmosphere over Colorado means, yes, more hail in the stronger late afternoon and evening storms today (Figure 1 update). The Storm Prediction Center also noted that they may need to up the hail chances from Marginal (1 out of 5 risk) to Slight (2 out of 5) as more data comes in today,

figure1_08062023
Figure 1 update: the hail forecast map from the SPC and NOAA for Sunday.

End Sunday update.

Forecast Discussion:

A cool front has arrived and is bringing a surge of moisture back to the I-25 communities. With a short wave expected to arrive this afternoon, we should see a spike in thunderstorm activity again (Figure 1). There is a marginal risk (1 out of 5) of severe weather north of Longmont, a slight risk (2 out of 5) south and east of Longmont, and an enhanced risk (3 out of 5) southeast of Denver and east of Colorado Springs (Figure 2).

The enhanced risk region has a chance of tornadoes (Figure 3) while the marginal and slight regions have a chance for damaging hail and high winds (Figure 4). The severe chances keep rolling!

We will see pretty cool weather Sunday and remain below normal through mid-week (Figure 1).

figure1_08052023
Figure 1: the 10 day graphical forecast for Denver from weatherunderground.com
figure2_08052023
Figure 2: the SPC severe weather outlook for Saturday (Day 1).
figure3_08052023
Figure 3: the SPC tornado outlook for Saturday (Day 1).
figure4_08052023
Figure 4: the SPC hail outlook for Saturday (Day 1).

The Longer Range Forecast:

The end of the week sees normal high temperatures return (Figure 1) with rain, over the next 5 days, falling largely in the mountains and eastern plains.

figure5_08052023
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

Partly cloudy

Partly cloudy

73°F

UV Index
0 Low
Pressure
30.06 Steady
Visibility
32 miles
Dewpoint
39 °F
Humidity
28%
Wind
WSW 1.6 mph
Gust
2.4 mph
Wind Chill
73 °F

Hourly Forecast

Today
11 PM
73°F
Mostly clear
Tomorrow
12 AM
70°F
Mostly clear
Tomorrow
1 AM
68°F
Clear
Tomorrow
2 AM
66°F
Clear
Tomorrow
3 AM
64°F
Clear
Tomorrow
4 AM
63°F
Clear
Tomorrow
5 AM
61°F
Clear
Tomorrow
6 AM
59°F
Sunny
Tomorrow
7 AM
63°F
Sunny
Tomorrow
8 AM
68°F
Sunny
Tomorrow
9 AM
74°F
Sunny
Tomorrow
10 AM
79°F
Mostly sunny

7 Day Forecast

Mostly cloudy

Wednesday

95 °F

Turning cloudy and very warm


Mostly clear

Wednesday Night

59 °F

Clear to partly cloudy


Intermittent clouds

Thursday

94 °F

Very warm with intervals of clouds and sunshine


Intermittent clouds

Thursday Night

64 °F

Partly cloudy


Partly sunny w/ t-storms

Friday

90 °F

Sun and some clouds with a thundershower in parts of the area in the afternoon


Clear

Friday Night

60 °F

Clear


Partly sunny

Saturday

93 °F

Partly sunny with a thunderstorm in a couple of spots in the afternoon


Clear

Saturday Night

58 °F

Clear


Partly sunny

Sunday

89 °F

Partly sunny with a thunderstorm in parts of the area


Mostly clear

Sunday Night

57 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:35 AM
Sunset
8:34 PM

Based on AccuWeather data