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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

Mostly cloudy

Mostly cloudy

53°F

UV Index
0 Low
Pressure
29.87 Rising
Visibility
8 miles
Dewpoint
40 °F
Humidity
59%
Wind
SSE 2.7 mph
Gust
5.8 mph
Wind Chill
53 °F

Hourly Forecast

Today
11 PM
48°F
Cloudy
Tomorrow
12 AM
46°F
Cloudy
Tomorrow
1 AM
44°F
Cloudy
Tomorrow
2 AM
42°F
Mostly cloudy
Tomorrow
3 AM
40°F
Mostly cloudy
Tomorrow
4 AM
38°F
Mostly cloudy
Tomorrow
5 AM
37°F
Mostly cloudy
Tomorrow
6 AM
35°F
Mostly cloudy
Tomorrow
7 AM
37°F
Mostly cloudy
Tomorrow
8 AM
41°F
Mostly sunny
Tomorrow
9 AM
46°F
Partly sunny
Tomorrow
10 AM
50°F
Partly sunny

7 Day Forecast

Mostly cloudy

Wednesday

68 °F

A morning shower in spots; otherwise, clouds and breaks of sun


Thunderstorms

Wednesday Night

35 °F

A thunderstorm in spots this evening; otherwise, mostly cloudy


Intermittent clouds

Thursday

63 °F

A blend of sun and clouds


Mostly cloudy

Thursday Night

39 °F

Mostly cloudy


Partly sunny

Friday

64 °F

Some sun; breezy in the afternoon


Partly cloudy

Friday Night

36 °F

Partly cloudy


Partly sunny

Saturday

66 °F

Partial sunshine


Mostly clear

Saturday Night

41 °F

Clear to partly cloudy


Mostly cloudy

Sunday

78 °F

Rather cloudy and warmer; breezy in the afternoon


Mostly cloudy

Sunday Night

43 °F

Rather cloudy


Sunrise and Sunset

Sunrise
5:59 AM
Sunset
7:56 PM

Based on AccuWeather data