Skip to content

Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – August 18-19, 2019

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

In Brief:

Moisture diminishes a bit as a strong ridge dominates the weather through Tuesday AM. We will see upper 90'sF until moisture returns Tuesday PM and temperatures drop about 10F.

Forecast Discussion:

The wind flow across the nation is bringing us air flow and moisture from the west/Pacific (Figure 1). With a ridge growing over the southern U.S. and Colorado (Figure 3) - we dry out and get quite hot Sunday-Tuesday (Figure 2).

The Longer Range Forecast:

In the more distant future, the ridge will weaken, a trough takes a bite out of it by Tuesday so we see moisture return - storm chances return as well for a bit. It is going to get quiet after the Saturday clouds, winds, and showers move on.

Figure 1: Wind flow/streamline map for Sunday from the weather channel.
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 Monday AM. Pink dot is Longmont. Red lines are troughs, blue lines are ridges.

Current Weather

Mostly cloudy

Mostly cloudy

49°F

UV Index
0 Low
Pressure
29.6 Steady
Visibility
8 miles
Dewpoint
18 °F
Humidity
29%
Wind
W 5.3 mph
Gust
11.9 mph
Wind Chill
47 °F

Hourly Forecast

Today
3 AM
46°F
Mostly clear
Today
4 AM
44°F
Partly cloudy
Today
5 AM
43°F
Intermittent clouds
Today
6 AM
42°F
Mostly cloudy
Today
7 AM
44°F
Cloudy
Today
8 AM
46°F
Partly sunny w/ showers
Today
9 AM
51°F
Partly sunny
Today
10 AM
54°F
Intermittent clouds
Today
11 AM
56°F
Intermittent clouds
Today
12 PM
58°F
Mostly cloudy
Today
1 PM
59°F
Showers
Today
2 PM
61°F
Intermittent clouds

7 Day Forecast

Showers

Monday

57 °F

A few showers in the morning; otherwise, mostly cloudy, breezy and cooler


Intermittent clouds

Monday Night

42 °F

Partly cloudy; breezy late


Partly sunny w/ showers

Tuesday

61 °F

Very windy; a couple of showers this morning; otherwise, times of clouds and sun


Partly cloudy

Tuesday Night

34 °F

Partly cloudy


Intermittent clouds

Wednesday

57 °F

Cool with times of clouds and sun


Mostly cloudy

Wednesday Night

39 °F

Increasing clouds


Partly sunny w/ showers

Thursday

56 °F

Times of clouds and sun with a couple of showers; cool


Cloudy

Thursday Night

40 °F

Cloudy


Mostly cloudy

Friday

66 °F

Mostly cloudy and warmer


Mostly clear

Friday Night

40 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:53 AM
Sunset
8:01 PM

Based on AccuWeather data