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Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – June 12, 2019

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

In Brief:

Today will be clear and dry (Wednesday). Clouds increase through the rest of the week with increasing afternoon storm chances each day until the weekend when afternoon storm chances get a bit greater. We stay near 80F for the next week as well (a bit warmer Thur/Fri, a bit cooler Sunday).

Forecast Discussion:

There are no nearby storm systems today (Wednesday). We are high and dry with just a few afternoon mountain showers off to the west (Figure 1).

Simple and straightforward.

The Longer Range Forecast:

We warm to the mid 80'sF over the next couple of days as a ridge aloft passes over (Figure 2). The ridge is the blue line in figure 3.

By the weekend (Figure 4) that ridge is replace by a trough (red line) that means cooler temperatures and better afternoon storm chances with colder air aloft (Figure 2). There aren't headlines here except - overall nice weather is here!

Figure 1: The forecast surface map for Wednesday night from NCEP.
Figure 2: the graphical forecast for the next 10 days for Longmont, CO from weatherunderground.com
Figure 3: The 500mb forecast upper air analysis for Wednesday PM. Pink dot is Longmont. Red lines are troughs, blue lines are ridges.
Figure 4: The 500mb forecast upper air analysis for Saturday AM. Pink dot is Longmont. Red lines are troughs, blue lines are ridges.

Current Weather

Mostly clear

Mostly clear

55°F

UV Index
0 Low
Pressure
29.89 Steady
Visibility
9 miles
Dewpoint
42 °F
Humidity
63%
Wind
NW 4.2 mph
Gust
9.6 mph
Wind Chill
55 °F

Hourly Forecast

Today
1 AM
52°F
Partly cloudy
Today
2 AM
50°F
Mostly clear
Today
3 AM
47°F
Mostly clear
Today
4 AM
45°F
Clear
Today
5 AM
43°F
Mostly clear
Today
6 AM
41°F
Mostly clear
Today
7 AM
45°F
Partly sunny
Today
8 AM
50°F
Partly sunny
Today
9 AM
55°F
Partly sunny
Today
10 AM
62°F
Intermittent clouds
Today
11 AM
66°F
Intermittent clouds
Today
12 PM
70°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 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 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