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The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – November 20, 2017

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

Forecast discussion:

The quiet (and sometimes cloudy) weather continues. We climb to lower 60's today with the northwest flow/jet stream still fairly close to the north.  In the 10 day graphical forecast in Figure 1 - there are two weak fronts that are on tap. One comes through tomorrow/Tuesday knocking temperatures down just a touch and kicking off some snow and rain showers up in the mountains (giving us a tiny chance of a sprinkle).

Figure 2 shows that front pushing in from the northeast with those mountain showers. Nothing really notable.

Figure 1: The 10 day graphical forecast from weatherunderground.com.

Figure 2: The NCEP surface analysis map forecast for Tuesday AM.

The longer range forecast:

Thanksgiving is still high and dry with a High of 70F, a Low of 45F with partly cloudy skies and light west winds.

Our next weak front comes in Saturday, but is really too far off and (at this point) minor to worry about (Figure 1 again).

Current Weather

Sunny

Sunny

52°F

UV Index
4 Moderate
Pressure
30.18 Steady
Visibility
8 miles
Dewpoint
23 °F
Humidity
32%
Wind
NNE 1.7 mph
Gust
4.4 mph
Wind Chill
52 °F

Hourly Forecast

Today
10 AM
54°F
Partly sunny
Today
11 AM
56°F
Intermittent clouds
Today
12 PM
58°F
Intermittent clouds
Today
1 PM
59°F
Intermittent clouds
Today
2 PM
60°F
Mostly cloudy
Today
3 PM
62°F
Cloudy
Today
4 PM
61°F
Showers
Today
5 PM
59°F
Cloudy
Today
6 PM
57°F
Cloudy
Today
7 PM
54°F
Cloudy
Today
8 PM
52°F
Intermittent clouds
Today
9 PM
50°F
Mostly cloudy w/ t-storms

7 Day Forecast

Mostly cloudy w/ showers

Tuesday

62 °F

Cooler with some sun, then turning cloudy; a couple of afternoon showers


Partly cloudy w/ t-storms

Tuesday Night

39 °F

An evening thundershower; otherwise, partly cloudy


Mostly sunny

Wednesday

76 °F

Pleasant and warmer with sunshine and patchy clouds


Partly cloudy

Wednesday Night

41 °F

Patchy clouds


Mostly cloudy

Thursday

75 °F

Turning cloudy, warm; breezy, a thunderstorm around in the afternoon


Cloudy

Thursday Night

48 °F

Considerable cloudiness


Showers

Friday

69 °F

Mostly cloudy with a couple of showers


Thunderstorms

Friday Night

46 °F

Cloudy; thundershowers in the evening followed by periods of rain late


Showers

Saturday

53 °F

Cloudy and cooler with a couple of showers


Showers

Saturday Night

39 °F

Cloudy with occasional rain and drizzle late


Sunrise and Sunset

Sunrise
6:10 AM
Sunset
7:48 PM

Based on AccuWeather data