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Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – April 24, 2019

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

In Brief:

We have a stretch of 5 more days of mild weather with only a small chance of a thundershower most afternoons. A cool down with some rain showers return Monday/Tuesday, then we warm up but have continued shower chances next week.

Forecast Discussion:

There aren't any organized storms around the state, but there is a weak lee trough (yellow line) just east of the mountains (Figure 1). There will be some moisture around and weak low level convergence along the Front Range. With day time heating- small thundershowers may pop up (Figure 2) and drift to the southeast on northwest flow aloft (not shown). Temperatures are very nice in the lower to middle 70's F this week.

The Longer Range Forecast:

Over the next 5 days, there is a chance of a little bit of rain almost anywhere across the state (Figure 3). There are indications of cooler weather and rain beginning Sunday night (Figure 2) with rainfall over the next 10 days over 1.5" (Figure 4). Remember, we have seen the GFS get really excited many days out and then fade out on us. I wouldn't count on big rains yet.

Figure 1: The forecast surface map for Wednesday PM from NCEP.
Figure 2: the graphical forecast for the next 10 days for Longmont, CO from weatherunderground.com
Figure 3: the forecast accumulated precipitation map from the GFS and weather5280.com for Colorado,over the next 5 days.
Figure 4: the forecast accumulated precipitation map from the GFS and weather5280.com for Colorado,over the next 10 days.


Current Weather

Mostly cloudy

Mostly cloudy

56°F

UV Index
6 High
Pressure
29.51 Steady
Visibility
8 miles
Dewpoint
24 °F
Humidity
28%
Wind
W 13 mph
Gust
30.6 mph
Wind Chill
56 °F

Hourly Forecast

Today
1 PM
55°F
Showers
Today
2 PM
56°F
Cloudy
Today
3 PM
57°F
Cloudy
Today
4 PM
57°F
Cloudy
Today
5 PM
56°F
Cloudy
Today
6 PM
55°F
Cloudy
Today
7 PM
55°F
Cloudy
Today
8 PM
53°F
Mostly cloudy
Today
9 PM
51°F
Intermittent clouds
Today
10 PM
49°F
Intermittent clouds
Today
11 PM
48°F
Partly cloudy
Tomorrow
12 AM
47°F
Mostly clear

7 Day Forecast

Showers

Monday

57 °F

Winds becoming strong; mostly cloudy and cooler with brief showers this morning followed by a shower this afternoon


Intermittent clouds

Monday Night

41 °F

Partly cloudy


Partly sunny w/ showers

Tuesday

58 °F

A couple of showers in the morning; otherwise, windy and cool with times of clouds and sun


Partly cloudy

Tuesday Night

33 °F

Partly cloudy


Intermittent clouds

Wednesday

60 °F

Times of clouds and sun


Mostly cloudy

Wednesday Night

38 °F

Increasing clouds


Partly sunny w/ showers

Thursday

56 °F

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


Cloudy

Thursday Night

37 °F

Cloudy


Mostly cloudy

Friday

62 °F

Mostly cloudy and warmer


Mostly clear

Friday Night

36 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:53 AM
Sunset
8:01 PM

Based on AccuWeather data