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The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – October 20th, 2018

This content was originally published by the Longmont Observer and is licensed under a Creative Commons license.

The Forecast Discussion:

There really isn't much to report - this is a VERY NICE stretch of weather. The temperature departures from normal (Figure 1) today are just a little above or a little below normal depending on where you are. For Sunday, things are a touch warmer, but not extreme (Figure 2) - maybe about 72°F. We have a ridge over the west, so it is dry.

More below in the extended forecast...

Note: I'll be on a big family vacation at the end of the month. There will be no updates to this column for the period October 26-Nov 4. I'll probably create a page of links to my favorite forecast pages in my absence.

Figure 1: forecast surface temperature anomaly for Colorado (departure from normal) for Saturday noon from weather5280.com

Figure 2: forecast surface temperature anomaly for Colorado (departure from normal) for Sunday noon from weather5280.com

The longer range forecast:

We do get a complex split flow with a couple short wave troughs traveling under the big ridge by mid-week next week (Figure 3). There isn't much moisture around, or instability expected with this set-up, so rain chances (Figure 4- green circle) remain low. We just cool to below normal as the short waves travel through (normal is about 65°F this week).

Enjoy the extreme niceness.

Figure 3: The 500mb forecast upper air analysis for Wednesday AM. Pink dot is Longmont. Red lines are troughs, blue lines are ridges.

Figure 4: the next 10 days of the graphical forecast for Longmont, CO from weatherunderground.com

Current Weather

Clear

Clear

39°F

UV Index
0 Low
Pressure
30.14 Steady
Visibility
8 miles
Dewpoint
28 °F
Humidity
64%
Wind
WSW 1.7 mph
Gust
3.2 mph
Wind Chill
39 °F

Hourly Forecast

Today
1 AM
36°F
Clear
Today
2 AM
35°F
Clear
Today
3 AM
33°F
Clear
Today
4 AM
32°F
Clear
Today
5 AM
31°F
Clear
Today
6 AM
30°F
Mostly clear
Today
7 AM
29°F
Clear
Today
8 AM
32°F
Sunny
Today
9 AM
39°F
Sunny
Today
10 AM
45°F
Sunny
Today
11 AM
51°F
Sunny
Today
12 PM
54°F
Mostly sunny

7 Day Forecast

Sunny

Monday

60 °F

Milder with sunshine; the start of a stretch of dry and mild weather


Clear

Monday Night

29 °F

Clear


Sunny

Tuesday

62 °F

Plenty of sunshine


Mostly clear

Tuesday Night

30 °F

Mainly clear


Mostly sunny

Wednesday

63 °F

Mostly sunny and beautiful


Mostly clear

Wednesday Night

30 °F

Mainly clear


Intermittent clouds

Thursday

66 °F

Sun and areas of high clouds and pleasant; breezy in the afternoon


Partly cloudy

Thursday Night

31 °F

Partly cloudy


Mostly cloudy

Friday

61 °F

Becoming cloudy with a thundershower in spots in the afternoon


Mostly cloudy

Friday Night

32 °F

Mostly cloudy


Sunrise and Sunset

Sunrise
7:06 AM
Sunset
7:11 PM

Based on AccuWeather data