Skip to content

Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – February 2, 2019

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

Forecast Discussion:

We keep warming up (even if we get windy at times) this weekend as the super-cold slides northeast out of the U.S. over the next couple of days.  Easy come, easy go? (Figure 1). The big ridge overhead is the force responsible for our comfort as is the corresponding departing trough out east (Figure 2).

The ripple in the jet stream to our south will be associated with some storminess that will bring snow to the western slopes into the later weekend. We stay dry down on the Plains (Figure 3 and 4).  Even Estes Park is expected to receive only some rain on Sunday. That is unusual February warmth!

The longer range forecast:

Things are still looking cool and mostly cloudy in Punxsutawney, Pa for this morning (we'll see what the guys in the top hats say) and clear locally, though clouds form as moisture in the mid levels slips over the Rockies from that approaching western storm (Figure 5). The models are all over the place concerning our midweek snow chances, so don't place any bets yet.  The weather undergroundmodel gives us 1-3 inches.  But, really, anything is on the table from 0 to 6 inches at this point.  You'll have to come back later to find out!

Figure 1: the current temperatures chart from Friday PM from weatherunderground.com

Figure 2: NCEP 500 mb upper air map from Friday PM. Blue lines are ridges, red lines are troughs.

Figure 3: The forecast surface map for Saturday night. From NCEP.

Figure 4: The forecast surface map for Sunday AM. From NCEP.

Figure 5: the graphical forecast for the next 10 days for Longmont, CO from weatherunderground.com

Current Weather

Cloudy

Cloudy

49°F

UV Index
0 Low
Pressure
29.89 Falling
Visibility
7 miles
Dewpoint
44 °F
Humidity
84%
Wind
NW 1.1 mph
Gust
2.1 mph
Wind Chill
49 °F

Hourly Forecast

Today
8 AM
51°F
Partly sunny
Today
9 AM
59°F
Partly sunny
Today
10 AM
65°F
Intermittent clouds
Today
11 AM
71°F
Intermittent clouds
Today
12 PM
75°F
Intermittent clouds
Today
1 PM
77°F
Intermittent clouds
Today
2 PM
75°F
Thunderstorms
Today
3 PM
73°F
Cloudy
Today
4 PM
73°F
Cloudy
Today
5 PM
72°F
Cloudy
Today
6 PM
68°F
Cloudy
Today
7 PM
65°F
Cloudy

7 Day Forecast

Mostly cloudy w/ t-storms

Thursday

77 °F

Turning cloudy, warm; breezy, a stray thunderstorm this afternoon


Thunderstorms

Thursday Night

47 °F

A thunderstorm in spots this evening; otherwise, considerable cloudiness


Thunderstorms

Friday

69 °F

Mostly cloudy and not as warm with a couple of thundershowers


Thunderstorms

Friday Night

44 °F

Cloudy with a couple of thundershowers


Rain

Saturday

46 °F

Chilly with periods of rain and a thunderstorm


Rain and snow

Saturday Night

39 °F

Cloudy with rain, mixed with a little snow late


Mostly cloudy

Sunday

59 °F

Mostly cloudy and warmer; a stray afternoon thundershower


Partly cloudy

Sunday Night

36 °F

Partly cloudy


Mostly sunny

Monday

71 °F

Mostly sunny and warmer


Partly cloudy

Monday Night

39 °F

Partly cloudy


Sunrise and Sunset

Sunrise
6:07 AM
Sunset
7:50 PM

Based on AccuWeather data