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The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – June 11, 2018

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

Forecast Discussion:

With a cool front that pushed across the state Sunday PM, we are very quiet and dry today. Temperatures are down about 12 F from Sunday (Sunday hit 99F in Longmont and 97F in Denver).

Figure 1 shows the bone dry, post-frontal state with no notable weather occurring as it scours moisture out of Colorado and cools the lower atmosphere (more stable). There was A LOT of smoke aloft over Longmont Sunday morning, but Figure 2 shows the front has pushed all the smoke way off into Kansas an deep south Colorado where the closest major fire is still burning.

Figure 1: The forecast surface map for this afternoon. From NCEP.

Figure 2: The HRRR model forecast for smoke at all levels for midday Monday. From NOAA.gov

The longer range forecast:

We drop to the lower 80'sF (no matter what Figure 3 says) then warm back up the the 90'sF over the next couple of days.  A VERY low chance of afternoon thunderstorms return, when a bit of monsoon-like moisture returns, and heat helps trigger them starting Tuesday PM.  Real cooling and rain chances seem to return come next weekend.  More later!

Figure 3: the total 10 days of the graphical forecast for Longmont, CO from weatherunderground.com

Current Weather

Mostly sunny

Mostly sunny

57°F

UV Index
9 Very High
Pressure
29.6 Falling
Visibility
8 miles
Dewpoint
24 °F
Humidity
28%
Wind
WSW 10.1 mph
Gust
21.9 mph
Wind Chill
57 °F

Hourly Forecast

Today
12 PM
58°F
Showers
Today
1 PM
59°F
Mostly cloudy
Today
2 PM
60°F
Intermittent clouds
Today
3 PM
62°F
Intermittent clouds
Today
4 PM
60°F
Intermittent clouds
Today
5 PM
58°F
Intermittent clouds
Today
6 PM
56°F
Intermittent clouds
Today
7 PM
54°F
Intermittent clouds
Today
8 PM
51°F
Intermittent clouds
Today
9 PM
48°F
Partly cloudy
Today
10 PM
45°F
Partly cloudy
Today
11 PM
43°F
Partly cloudy

7 Day Forecast

Partly sunny w/ showers

Tuesday

62 °F

A couple of brief showers late this morning; windy with times of clouds and sun


Partly cloudy

Tuesday Night

34 °F

Partly cloudy and colder; there can be frost in the normally colder spots


Intermittent clouds

Wednesday

59 °F

Cool with times of clouds and sun


Mostly cloudy w/ showers

Wednesday Night

37 °F

Increasing clouds with a shower in spots late


Partly sunny w/ showers

Thursday

56 °F

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


Partly cloudy

Thursday Night

40 °F

Partly cloudy


Mostly cloudy

Friday

63 °F

Mostly cloudy and warmer


Clear

Friday Night

40 °F

Clear


Mostly sunny

Saturday

74 °F

Mostly sunny, pleasant and warmer


Mostly clear

Saturday Night

43 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:52 AM
Sunset
8:02 PM

Based on AccuWeather data