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Sun Update: The Front Range Forecast: Good storm chances

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Figure 3: the 5 day precipitation forecast from the GFS and weather5280.com

In Brief:

A healthy chance of afternoon thunderstorms and rain through the next 10 days.

Sunday Update:

My chaperone duties in Washington DC come to an end today.  A full update tomorrow!  Plenty of moisture and daytime heating plust a favorable upper air pattern means we continue with a good chance of showers for most of the week ahead.  Nothing severe on the plate.

Ens Sunday update.

Tuesday update:

The SPC graphic is not yet out today, but we have a Marginal risk of severe weather again today (1 out of 5). The primary risk is hail and high winds again.  Keep an eye on the western sky!

End Tuesday update:

The Forecast Discussion;

The pattern is for moisture and instability to increase a bit each day for the next 10 days (Figure 1). The severe threat moves off to the east a bit (Figure 2), but storms can produce hail and heavy rain and winds for a few minutes at any time (pulse storms - Figure 2).  We are quite warm for a few days, then cool as a trough moves in and increases rain chances a lot by Friday (Figure 1).

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Figure 1: the 10 day graphical forecast for Denver from weatherunderground.com

 

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Figure 2: the Day 2 (Monday) SPC forecast for thunderstorms and severe weather.

The Longer Range Forecast:

Over the next 5 days, we should see about a quater of an ince of precipitation in Longmont or Broomfield, unless a thunderstorm core hits your neighborhood (Figure 3). The increased precipitation chances later in the week may give us 1-2 inches of rain over that period (Figure 4). We are definitely in a wet pattern!

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Figure 3: the 5 day precipitation forecast from the GFS and weather5280.com
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Figure 4: the 10 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 sunny

Partly sunny

57°F

UV Index
4 Moderate
Pressure
29.85 Falling
Visibility
7 miles
Dewpoint
46 °F
Humidity
66%
Wind
NNE 1.1 mph
Gust
3.2 mph
Wind Chill
57 °F

Hourly Forecast

Today
10 AM
63°F
Partly sunny
Today
11 AM
68°F
Partly sunny
Today
12 PM
73°F
Intermittent clouds
Today
1 PM
77°F
Intermittent clouds
Today
2 PM
76°F
Cloudy
Today
3 PM
75°F
Cloudy
Today
4 PM
73°F
Cloudy
Today
5 PM
70°F
Cloudy
Today
6 PM
68°F
Cloudy
Today
7 PM
65°F
Cloudy
Today
8 PM
62°F
Thunderstorms
Today
9 PM
59°F
Cloudy

7 Day Forecast

Mostly cloudy

Thursday

77 °F

Turning cloudy; warm


Thunderstorms

Thursday Night

47 °F

A thunderstorm in spots this evening; otherwise, considerable cloudiness


Thunderstorms

Friday

70 °F

Mostly cloudy and not as warm with a couple of thundershowers


Thunderstorms

Friday Night

43 °F

Cloudy with a couple of thundershowers


Rain

Saturday

46 °F

Chilly with periods of rain and a thunderstorm


Rain and snow

Saturday Night

39 °F

Cloudy with rain, mixed with a little snow late


Mostly cloudy

Sunday

59 °F

Mostly cloudy and warmer; a stray afternoon thundershower


Partly cloudy

Sunday Night

36 °F

Partly cloudy


Partly sunny

Monday

71 °F

Partly sunny and warmer


Partly cloudy

Monday Night

39 °F

Partly cloudy


Sunrise and Sunset

Sunrise
6:07 AM
Sunset
7:50 PM

Based on AccuWeather data