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The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – November 2, 2017

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

Forecast Discussion:

Other than wind, we are between systems right now, there isn't much to dwell on, so I'll be brief.

The infrared satellite image in Figure 1 shows the colder temperatures (yellows and greens in this image) and clouds north of the big frontal boundary draped across the continent.  We are 'just' south of that in warmer temperatures (more aqua, teal and blue in this image).

Figure 2 shows the broad trough with the center of the jet stream flow skirting north of the state.  Wind speeds today in some mountain passes and up in Wyoming topped 100mph.  There were high wind warnings up there today.  I didn't note it yesterday because Longmont only received enough wind to knock over trash cans now and then.

We warmed to 71F with the down-slope winds today.  This will occur now and then this week (with Thursday looking calmer and cooler with a weak cool front).  Figure 3 shows those mountain winds later on Wednesday.

Figure 1: The infrared satellite image with surface analysis Wednesday PM>

Figure 2: The 500mb upper air map for Wednesday PM.

Figure 3: The evening wind speed map for Colorado Wednesday PM.

In the longer range forecast:

We'll revisit the storminess and colder weather slated for the end of the weekend and beginning of next week as it gets closer.

Current Weather

Mostly sunny

Mostly sunny

57°F

UV Index
0 Low
Pressure
29.92 Steady
Visibility
8 miles
Dewpoint
30 °F
Humidity
36%
Wind
E 2.8 mph
Gust
5.5 mph
Wind Chill
57 °F

Hourly Forecast

Today
9 PM
51°F
Mostly cloudy
Today
10 PM
49°F
Mostly cloudy
Today
11 PM
47°F
Mostly cloudy
Tomorrow
12 AM
45°F
Cloudy
Tomorrow
1 AM
44°F
Cloudy
Tomorrow
2 AM
42°F
Cloudy
Tomorrow
3 AM
41°F
Cloudy
Tomorrow
4 AM
39°F
Mostly cloudy
Tomorrow
5 AM
38°F
Intermittent clouds
Tomorrow
6 AM
36°F
Partly sunny
Tomorrow
7 AM
35°F
Partly sunny
Tomorrow
8 AM
42°F
Partly sunny

7 Day Forecast

Mostly cloudy

Thursday

65 °F

Becoming cloudy


Mostly cloudy

Thursday Night

35 °F

Mostly cloudy


Partly sunny

Friday

71 °F

Pleasant with partial sunshine


Partly cloudy

Friday Night

38 °F

Partly cloudy


Partly sunny

Saturday

66 °F

Partial sunshine


Mostly clear

Saturday Night

41 °F

Clear to partly cloudy


Mostly cloudy

Sunday

76 °F

Rather cloudy; breezy in the afternoon


Intermittent clouds

Sunday Night

46 °F

Partly cloudy


Cloudy

Monday

60 °F

Cloudy and cooler with a shower in spots; windy in the afternoon


Mostly cloudy

Monday Night

41 °F

Breezy in the evening; otherwise, mostly cloudy


Sunrise and Sunset

Sunrise
5:58 AM
Sunset
7:57 PM

Based on AccuWeather data