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Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – February 13, 2019

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

Forecast Discussion:

Things are on track. A ridge sits overhead and down slope flow/winds will keep us warm in the 50's F. The next system is slowly approaching from the west (Figure 1). Figure 2 shows we stay in the 50's F through Friday (Figure 2).

The longer range forecast:

We have a very small chance of snow later Thursday into Friday AM, then again Saturday AM. The GFS (Figure 3) lays down a coating to maybe an inch of snow around town... you may get a luck dusting. The NAM limits the light snow to the western side of Longmont (Figure 4).

Our big snow storm next week, that faded to nearly nothing yesterday, is back with 1-3 or 2-4 inches of snow Sunday night into Wednesday morning (Figure 2). We can say that Saturday on will be cold, with more confidence. letting the GFS make things up for 10 days, it gives us 1-2 inches of snow over that long stretch of time. More to come! Have a nice Valentines Day!

Figure 1: The forecast surface map for Wednesday PM. From NCEP.
Figure 2: the graphical forecast for the next 10 days for Longmont, CO from weatherunderground.com
Figure 3: the forecast accumulated snow map from the GFS and weather5280.com for Colorado, through Friday noon.
Figure 4: the forecast accumulated snow map from the NAM and tropicaltidbits.com for Colorado, through Friday PM.
Figure 5: the forecast accumulated snow map from the GFS and weather5280.com for Colorado, through the next 10 days.

Current Weather

Cloudy

Cloudy

47°F

UV Index
2 Low
Pressure
30.19 Falling
Visibility
8 miles
Dewpoint
28 °F
Humidity
48%
Wind
SE 2.9 mph
Gust
6.2 mph
Wind Chill
46 °F

Hourly Forecast

Today
11 AM
50°F
Partly sunny
Today
12 PM
54°F
Mostly sunny
Today
1 PM
58°F
Mostly sunny
Today
2 PM
61°F
Partly sunny
Today
3 PM
63°F
Partly sunny
Today
4 PM
65°F
Intermittent clouds
Today
5 PM
66°F
Intermittent clouds
Today
6 PM
65°F
Intermittent clouds
Today
7 PM
63°F
Intermittent clouds
Today
8 PM
60°F
Mostly clear
Today
9 PM
57°F
Mostly clear
Today
10 PM
55°F
Mostly clear

7 Day Forecast

Intermittent clouds

Saturday

66 °F

Not as warm with intervals of clouds and sunshine


Mostly clear

Saturday Night

39 °F

Clear to partly cloudy


Mostly cloudy

Sunday

77 °F

Mostly cloudy and warmer; breezy in the afternoon


Mostly cloudy

Sunday Night

45 °F

Rather cloudy; breezy late


Windy

Monday

60 °F

Very windy; cloudy and cooler


Intermittent clouds

Monday Night

43 °F

Partly cloudy


Intermittent clouds

Tuesday

62 °F

Times of clouds and sun; windy in the afternoon


Partly cloudy

Tuesday Night

36 °F

Partly cloudy


Intermittent clouds

Wednesday

60 °F

Times of clouds and sun


Intermittent clouds

Wednesday Night

35 °F

Partly cloudy


Sunrise and Sunset

Sunrise
5:55 AM
Sunset
7:59 PM

Based on AccuWeather data