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Saturdaty Update: Front Range Forecast: Warm and windy again

In Brief:

Very warm and windy conditions return.

Saturday Update:

Very warm (70F today!) weather returns and the winds pick up again creating fire weather danger. We return to seasonable temperatures with low precipitation chances until we get to Thursday. The week-end storm looks fairly warm and not particularly wet, but I'll keep an eye on it here.  Go out and play - it is beautiful out there!

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

End Saturday update.

The Forecast Discussion:

We have a few days of unusual warmth and wind creating red flag fire warning conditions (Figure 1).  A strong, but fast moving, cold front hits Monday night.  (See the Longer Range forecast below for more).

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

The Longer Range Forecast:

The approaching upper air trough stretches from Canada down into the Pacific (Figure 2).  If this could have arrived as a cut-off low (as the models showed a week ago) - we could have had significant state-wide snowfall.  But, it will move through rather quickly. The peak snowfall for the storm appears to center on lunchtime Tuesday (high sun angle will make sticking snow difficult to achieve - Figure 3).

Currently, the GFS (Figure 4) gives Longmont 2-4 inches.  The NAM (Figure 5) gives us 1-3 inches with more quickly piling up closer to the mountains.

More later!

After that passes, it looks like we return to the 60's very quickly.

 

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Figure 2: the 500mb upper air forecast map from the GFS and tropicaltidbits.com
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Figure 3: the surface conditions forecast map from the GFS and tropicaltidbits.com
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Figure 4: the 10:1 snowfall forecast from the GFS and weather5280.com through Wednesday.
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Figure 5: the 10:1 snowfall forecast from the NAM and weather5280.com through Wednesday.

 


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

47°F

UV Index
0 Low
Pressure
29.61 Rising
Visibility
8 miles
Dewpoint
22 °F
Humidity
37%
Wind
WSW 4.9 mph
Gust
13.6 mph
Wind Chill
45 °F

Hourly Forecast

Today
5 AM
43°F
Intermittent clouds
Today
6 AM
42°F
Mostly cloudy
Today
7 AM
43°F
Cloudy
Today
8 AM
47°F
Partly sunny w/ showers
Today
9 AM
51°F
Partly sunny
Today
10 AM
54°F
Intermittent clouds
Today
11 AM
56°F
Intermittent clouds
Today
12 PM
58°F
Mostly cloudy
Today
1 PM
59°F
Showers
Today
2 PM
61°F
Intermittent clouds
Today
3 PM
60°F
Intermittent clouds
Today
4 PM
59°F
Intermittent clouds

7 Day Forecast

Partly sunny w/ showers

Tuesday

61 °F

Very windy; a couple of showers this morning; otherwise, times of clouds and sun


Partly cloudy

Tuesday Night

34 °F

Partly cloudy


Intermittent clouds

Wednesday

57 °F

Cool with times of clouds and sun


Mostly cloudy

Wednesday Night

39 °F

Increasing clouds


Partly sunny w/ showers

Thursday

56 °F

Times of clouds and sun with a couple of showers; cool


Cloudy

Thursday Night

40 °F

Cloudy


Mostly cloudy

Friday

66 °F

Mostly cloudy and warmer


Mostly clear

Friday Night

40 °F

Mainly clear


Intermittent clouds

Saturday

74 °F

Pleasant and warmer with periods of clouds and sun


Mostly clear

Saturday Night

43 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:52 AM
Sunset
8:02 PM

Based on AccuWeather data