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Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – January 15, 2019

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

Forecast Discussion:

Not much has changed since the discussion yesterday. The two western lows (pink arrows) have moved closer to the state. The western slopes of Colorado will start to feel the storm effects (yes more snow) by tonight (Figure 1). We stay dry and abnormally warm on this side of the Divide.

Figure 1: The forecast surface map for Tuesday PM. From NCEP. The longer range forecast:

We don't see any storm effects until Friday (still) but temperatures are looking warmer during that storm than previously (forecasted by the weatherunderground model). Through the storm's precipitation event, temperatures are around 40° F again (very much like last Friday's - spooky similarity!). We may not see much snow, but just more rain (Figure 2).

Estes Park and the mountains see more snow staring Wednesday and on through Saturday (at least at small chances - Figure 3). Snow isn't far away. The snowfall from the GFS over the next 5 days shows that the GFS thinks we are a bit colder and gives us 1/10th to 1 inch of snow by Saturday PM (Figure 4). The forecast will become more accurate in a day or two!

Figure 2: the graphical forecast for the next 10 days forecast for Longmont, CO from weatherunderground.com

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

Figure 4: The forecast accumulated snow map from the GFS and weather5280.com for Colorado, for the next 5 days through Saturday PM.

Current Weather

Cloudy

Cloudy

56°F

UV Index
0 Low
Pressure
29.8 Steady
Visibility
8 miles
Dewpoint
35 °F
Humidity
44%
Wind
SW 4.3 mph
Gust
9 mph
Wind Chill
56 °F

Hourly Forecast

Today
8 PM
56°F
Thunderstorms
Today
9 PM
53°F
Cloudy
Today
10 PM
50°F
Cloudy
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

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 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