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The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – August 29th, 2018

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

Forecast Discussion:

We have some more summer to get through BUT there IS now a change in the pattern showing up in the models. Oh boy!

Figure 1, in the meantime, shows a high pressure system sitting overhead. It will be hot and dry today.

The upper air pattern has a ridge and zonal (west to east) flow over the state today (Figure 2). It is just another way to say: hot and dry today.

The fire activity to the west is GREATLY diminished, which is good news for them and us (Figure 3). So it will be  hot, dry, but not so smoky today.

Figure 1: The forecast surface map for Wednesday PM. From NCEP.

Figure 2: The forecast surface map for Wednesday AM. From NCEP.

Figure 3: The HRRR (high resolution rapid refresh) model forecast of smoke at all levels for Wednesday morning.

The longer range forecast:

There does seem to be a short wave and accompanying cool front headed our way for Saturday giving us a small cool down and a small chance of afternoon showers (Figure 4).  In the middle of next week, a more significant system MAY move in and make things feel more like September around here. It looks like the pools will still be nice to swim in one final weekend!

Figure 4: the next 10 days of the graphical forecast for Longmont, CO from weatherunderground.com

Current Weather

Mostly cloudy

Mostly cloudy

73°F

UV Index
6 High
Pressure
30.03 Falling
Visibility
8 miles
Dewpoint
44 °F
Humidity
35%
Wind
ESE 4 mph
Gust
8.3 mph
Wind Chill
73 °F

Hourly Forecast

Today
2 PM
75°F
Partly sunny
Today
3 PM
78°F
Mostly sunny
Today
4 PM
76°F
Partly sunny w/ t-storms
Today
5 PM
74°F
Mostly sunny
Today
6 PM
71°F
Mostly sunny
Today
7 PM
68°F
Mostly sunny
Today
8 PM
65°F
Partly sunny
Today
9 PM
63°F
Partly cloudy
Today
10 PM
61°F
Partly cloudy
Today
11 PM
58°F
Partly cloudy
Tomorrow
12 AM
57°F
Partly cloudy
Tomorrow
1 AM
56°F
Partly cloudy

7 Day Forecast

Partly sunny w/ t-storms

Saturday

78 °F

Sunny to partly cloudy and not as warm, becoming breezy this afternoon with a thunderstorm in spots


Partly cloudy

Saturday Night

49 °F

Partly cloudy


Mostly sunny

Sunday

84 °F

Sunshine and patchy clouds; breezy in the afternoon


Mostly clear

Sunday Night

49 °F

Mainly clear


Partly sunny w/ t-storms

Monday

70 °F

Cooler with times of sun and clouds; a thunderstorm in spots in the afternoon


Thunderstorms

Monday Night

46 °F

Cloudy with a couple of thundershowers


Thunderstorms

Tuesday

60 °F

Mostly cloudy and cooler; a couple of afternoon showers and a thunderstorm


Intermittent clouds

Tuesday Night

37 °F

Partly cloudy


Partly sunny

Wednesday

73 °F

Pleasant and warmer with partial sunshine


Mostly clear

Wednesday Night

40 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:41 AM
Sunset
8:13 PM

Based on AccuWeather data