Skip to content

The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – November 9, 2017

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

Forecast Discussion:

The melt is already underway. We climbed to the mid 40's in Longmont on Wednesday after waking up to about 1/2" more snow across the town (Figure 1). The total snow depth with compression and some melting (from below) was about 3" Wednesday morning.

Today (Thursday) - a 'back door' cold front - or cold front coming from the northeast - will keep us only in the mid to upper 40's for a high today (Figure 2). We could be warmer except for the dry front with a ridge overhead today (Figure 3 blue line).  There is quite a jet stream flow heading towards and north of our state (pink arrow). But things are dry and warming.

Figure 1: The new snowfall reports reported 7am Wednesday.

Figure 2: Thursday morning forecast surface map from NCEP.

Figure 3: The 500mb upper air forecast map for Thursday PM.

The longer range forecast:

Things are still quiet and semi-warm in the 7-10 day forecast.  As an example, Figure 4 is the upper air pattern for Sunday night, and there is a ridge overhead again. The fast flowing jet even retreats to the west.  Enjoy the mildness!

Figure 4: The 500mb upper air forecast map for Sunday PM.

Current Weather

Mostly clear

Mostly clear

58°F

UV Index
0 Low
Pressure
29.9 Rising
Visibility
7 miles
Dewpoint
41 °F
Humidity
54%
Wind
NNW 4 mph
Gust
7.6 mph
Wind Chill
58 °F

Hourly Forecast

Today
11 PM
55°F
Mostly cloudy
Tomorrow
12 AM
53°F
Intermittent clouds
Tomorrow
1 AM
51°F
Partly cloudy
Tomorrow
2 AM
49°F
Mostly clear
Tomorrow
3 AM
47°F
Mostly clear
Tomorrow
4 AM
45°F
Clear
Tomorrow
5 AM
43°F
Mostly clear
Tomorrow
6 AM
41°F
Mostly clear
Tomorrow
7 AM
45°F
Partly sunny
Tomorrow
8 AM
49°F
Partly sunny
Tomorrow
9 AM
55°F
Partly sunny
Tomorrow
10 AM
62°F
Intermittent clouds

7 Day Forecast

Mostly sunny

Wednesday

75 °F

Mostly sunny, pleasant and warmer


Partly cloudy

Wednesday Night

41 °F

Patchy clouds


Mostly cloudy w/ t-storms

Thursday

75 °F

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


Thunderstorms

Thursday Night

49 °F

A thunderstorm in spots in the evening; otherwise, considerable cloudiness


Thunderstorms

Friday

70 °F

Mostly cloudy with a couple of thundershowers


Thunderstorms

Friday Night

46 °F

Cloudy with a couple of thundershowers


Rain

Saturday

50 °F

Chilly with periods of rain


Rain and snow

Saturday Night

39 °F

Cloudy with rain, mixed with a little snow late


Mostly cloudy

Sunday

59 °F

Mostly cloudy with a stray thundershower in the afternoon


Partly cloudy

Sunday Night

36 °F

Partly cloudy


Sunrise and Sunset

Sunrise
6:08 AM
Sunset
7:49 PM

Based on AccuWeather data