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Friday Update: Longmont Weather Forecast: Very comfortable, small storm mid week

In Brief:

Unusually warm weekend then an early week chill.

Friday Update:

This is just a quick update before the weekend!  Other than a couple of cold fronts Monday/Tuesday next week that "may" bring some showers - we have a FANTASTIC warm dry weekend ahead and quiet weather for the end of next week. Go enjoy!

 

 

Figure1u_11052021
Figure 1 update: the 10 day graphical forecast for Longmont from weatherunderground.com

End Friday update.

Forecast Discussion:

As I type, snow is falling outside on the fairly warm ground (the near 100% chance of precipitation on the left edge of Figure 1). Cold air is flowing down onto the Great Plains (Figure 2) but is too shallow to make it far up into the mountains. Western Colorado is still warm. This cool air is flowing upslope with occasional short waves and "jet maxes" or faster bits of the jet stream kicking of enhanced shower action (Figure 3). It is a nice taste of late fall/early winter.

Figure1_11012021
Figure 1: the 10 day graphical forecast from weatherunderground for Longmont
Figure2_11012021
Figure 2: the national surface temperature departure from normal for Tuesday from the GFS.
Figure3_11012021
Figure 3: the surface map from the NWS fore Tuesday.

The Longer-Range Forecast:

Most of the precipitation that will fall over the next five days (total precipitation Figure 4, total snow Figure 5) will occur Monday and Tuesday before the cold air slides off to the southeast. Next weekend looks very pleasant, at this time.

Figure4_11012021
Figure 4: the 5-day precipitation total map from weather5280.com from the GFS
Figure5_11012021
Figure 5: the 5-day (10:1 ratio) snow total map from weather5280.com from the GFS

 


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

62°F

UV Index
0 Low
Pressure
29.7 Steady
Visibility
9 miles
Dewpoint
35 °F
Humidity
37%
Wind
WSW 2.7 mph
Gust
4.2 mph
Wind Chill
62 °F

Hourly Forecast

Today
1 AM
60°F
Clear
Today
2 AM
58°F
Clear
Today
3 AM
57°F
Clear
Today
4 AM
55°F
Clear
Today
5 AM
54°F
Clear
Today
6 AM
53°F
Sunny
Today
7 AM
57°F
Mostly sunny
Today
8 AM
64°F
Partly sunny
Today
9 AM
71°F
Partly sunny
Today
10 AM
75°F
Partly sunny
Today
11 AM
79°F
Partly sunny
Today
12 PM
82°F
Partly sunny

7 Day Forecast

Sunny

Monday

88 °F

Sunny and very warm with the temperature approaching the record of 91 set in 1962


Clear

Monday Night

53 °F

Clear


Partly sunny

Tuesday

88 °F

Very warm with partial sunshine; breezy in the afternoon


Clear

Tuesday Night

50 °F

Breezy in the evening; otherwise, clear


Partly sunny w/ showers

Wednesday

73 °F

Cooler with sunshine giving way to clouds, becoming windy with a shower in the area in the afternoon; elevated fire risk due to gusty winds and low humidity


Cloudy

Wednesday Night

46 °F

Overcast


Intermittent clouds

Thursday

71 °F

Beautiful with intervals of clouds and sunshine


Mostly cloudy

Thursday Night

43 °F

Cloudy most of the time


Intermittent clouds

Friday

71 °F

Beautiful with times of clouds and sun


Intermittent clouds

Friday Night

45 °F

Partly cloudy


Sunrise and Sunset

Sunrise
5:48 AM
Sunset
8:06 PM

Based on AccuWeather data