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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

Clear

Clear

48°F

UV Index
0 Low
Pressure
30.29 Steady
Visibility
8 miles
Dewpoint
42 °F
Humidity
79%
Wind
WNW 1.6 mph
Gust
3.4 mph
Wind Chill
48 °F

Hourly Forecast

Today
2 AM
49°F
Mostly clear
Today
3 AM
48°F
Mostly clear
Today
4 AM
46°F
Mostly clear
Today
5 AM
45°F
Mostly clear
Today
6 AM
44°F
Mostly sunny
Today
7 AM
47°F
Mostly sunny
Today
8 AM
52°F
Intermittent clouds
Today
9 AM
58°F
Intermittent clouds
Today
10 AM
64°F
Intermittent clouds
Today
11 AM
67°F
Intermittent clouds
Today
12 PM
70°F
Intermittent clouds
Today
1 PM
72°F
Intermittent clouds

7 Day Forecast

Mostly sunny

Thursday

71 °F

Sunny to partly cloudy, pleasant and warmer


Clear

Thursday Night

44 °F

Clear


Partly sunny w/ t-storms

Friday

75 °F

Times of clouds and sun with a thunderstorm in spots in the afternoon


Mostly clear

Friday Night

45 °F

Clear to partly cloudy


Mostly sunny

Saturday

81 °F

Sunny to partly cloudy and very warm


Mostly clear

Saturday Night

44 °F

Clear to partly cloudy


Partly sunny

Sunday

83 °F

Very warm with sunshine mixing with some clouds; windy in the afternoon


Partly cloudy

Sunday Night

48 °F

Partly cloudy


Mostly cloudy

Monday

84 °F

Very warm with more clouds than sunshine


Mostly clear

Monday Night

52 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:52 AM
Sunset
8:02 PM

Based on AccuWeather data