Skip to content

Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – December 10, 2018

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

Forecast Discussion:

Oh so quiet and dry. Figure 1 shows a weak lee trough over the I-25 corridor (just tells the direction that wind is blowing, not much more 'weather' is happening with it). High pressure will keep us abnormally warm and dry.

Figure 1: The forecast surface map for Monday night. From NCEP.

The longer range forecast:

Figure 2 is the upper air pattern for the next 10 days showing a ridge over the western U.S. for most of the time. There is a trough Wednesday/Thursday, but it will remain dry on the eastern side of the Rockies. The western slopes and higher elevations will get snow now and then. A nearly ideal winter?

Figure 3 is the 10 day graphic and it shows that Wednesday/Thursday cold front, but only a 6% chance of showers for 20 minutes in the late night Wednesday. Nothing notable.

Sorry things aren't more exciting!

Figure 2: Animation of the 500mb upper air pattern for the next 10 days from tropicaltidbits.com and the GFS.

Figure 3: the graphical forecast for the next 10 days forecast for Longmont, CO from weatherunderground.com

Current Weather

Cloudy

Cloudy

36°F

UV Index
0 Low
Pressure
30.24 Steady
Visibility
8 miles
Dewpoint
30 °F
Humidity
77%
Wind
ENE 2.8 mph
Gust
5.5 mph
Wind Chill
34 °F

Hourly Forecast

Today
6 PM
39°F
Cloudy
Today
7 PM
39°F
Cloudy
Today
8 PM
39°F
Cloudy
Today
9 PM
39°F
Cloudy
Today
10 PM
39°F
Cloudy
Today
11 PM
38°F
Cloudy
Tomorrow
12 AM
38°F
Cloudy
Tomorrow
1 AM
37°F
Cloudy
Tomorrow
2 AM
36°F
Cloudy
Tomorrow
3 AM
35°F
Cloudy
Tomorrow
4 AM
35°F
Mostly cloudy
Tomorrow
5 AM
34°F
Mostly cloudy

7 Day Forecast

Rain and snow

Thursday

39 °F

Cloudy and much colder; snow showers this morning, accumulating a coating to an inch followed by a brief shower or two this afternoon


Mostly cloudy

Thursday Night

34 °F

Mostly cloudy


Mostly cloudy w/ showers

Friday

47 °F

Chilly with some sun, then turning cloudy; a little rain in the afternoon


Rain and snow

Friday Night

33 °F

Periods of snow; rain mixed in early, accumulating an inch or two


Flurries

Saturday

43 °F

A bit of morning snow with little or no accumulation; otherwise, cloudy and chilly; storm total snowfall an inch or two


Intermittent clouds

Saturday Night

31 °F

Partly cloudy


Partly sunny

Sunday

69 °F

Pleasant and warmer with partial sunshine


Partly cloudy

Sunday Night

44 °F

Partly cloudy


Intermittent clouds

Monday

79 °F

Very warm with a blend of sun and clouds


Intermittent clouds

Monday Night

36 °F

Increasing clouds


Sunrise and Sunset

Sunrise
6:17 AM
Sunset
7:43 PM

Based on AccuWeather data