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Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – January 14, 2019

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

Forecast Discussion:

We are back in a quiet and above average (temperature) pattern with high pressure over the state (Figure 1). There isn't much to say about it except that a storm is again passing to our south (1) while the storm behind it (2) will crash into our western mountain slopes again by the end of the week.

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

The storm (1 - Figure 2) passing to the south isn't a blip on the radar for us.  Storm 2 has a chance of giving us some snow Friday. There is another storm in the distant 10 day forecast, but let's not get excited THAT far out yet.   Figure 3 shows the widespread snow across the northern Rockies, western Colorado and Midwest with this storm and an arctic front headed out of Canada. Figure 4, the GFS, though, suggests that while the western slopes will see widespread 1-foot snow amounts, Longmont is in a hole of nothingness.  We'll keep watching it as the week goes on.  (I want snow!  *falls to ground and kicks feet having a fit...*)

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

Figure 3: Forecast highs and precipitation type for the U.S. for Friday Jan 18th from the Weather Channel.

Figure 4: The forecast accumulated snow map from the GFS and weather5280.com for Colorado, for the next 6 days through Saturday PM.

Current Weather

Sunny

Sunny

54°F

UV Index
4 Moderate
Pressure
30.18 Steady
Visibility
8 miles
Dewpoint
24 °F
Humidity
31%
Wind
ENE 1.9 mph
Gust
4.9 mph
Wind Chill
54 °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