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

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

Forecast Discussion:

We received the snow. My personal forecast was for 1-4 inches (see NextDoor) in Longmont and we saw about 3-4 inches (Figure 2). This equate to almost 2/3rds of an inch of water (Figure 1). More drought busting goodness.

For Friday afternoon, the NEXT system is already moving in bringing snow to the mountains and afternoon rain showers that will turn to snow at night. This is not at all as vigorous as the last two storms, it is just a normal spring system is coming through (Figure 3). Rain chances taper off late morning Saturday.

It looks like this next system will deliver .05 to .25 inch of water (Figure 4) and a coating to 1 inch of snow (Figure 5).

The longer range forecast:

We briefly visit 70F on Sunday before the Next Next system comes in cooling us down (but not really to freezing). We see rain showers Tuesday becoming an unsettled period of occasional showers through Thursday. More on that later (Figure 4)!

Figure 1: total new precipitation totals for Wednesday/Thursday up to 7am for Boulder county from CoCoRaHS.
Figure 2: total new snow totals for Wednesday/Thursday up to 7am for Boulder county from CoCoRaHS.
Figure 3: The forecast surface map for Fridaay PM from NCEP.
Figure 4: the graphical forecast for the next 10 days for Longmont, CO from weatherunderground.com
Figure 5: the forecast accumulated precipitation map from the GFS and weather5280.com for Colorado, over the next 3 days.
Figure 6: the forecast accumulated snowfall map from the GFS and weather5280.com for Colorado, over the next 3 days.


Current Weather

Partly sunny

Partly sunny

61°F

UV Index
3 Moderate
Pressure
29.82 Rising
Visibility
4 miles
Dewpoint
22 °F
Humidity
23%
Wind
WNW 5.6 mph
Gust
12.4 mph
Wind Chill
61 °F

Hourly Forecast

Today
5 PM
58°F
Intermittent clouds
Today
6 PM
57°F
Intermittent clouds
Today
7 PM
56°F
Intermittent clouds
Today
8 PM
54°F
Intermittent clouds
Today
9 PM
51°F
Intermittent clouds
Today
10 PM
48°F
Intermittent clouds
Today
11 PM
45°F
Intermittent clouds
Tomorrow
12 AM
44°F
Intermittent clouds
Tomorrow
1 AM
43°F
Intermittent clouds
Tomorrow
2 AM
42°F
Cloudy
Tomorrow
3 AM
41°F
Cloudy
Tomorrow
4 AM
41°F
Cloudy

7 Day Forecast

Partly sunny

Wednesday

60 °F

Partly sunny and cool


Mostly cloudy

Wednesday Night

40 °F

Increasing clouds


Partly sunny w/ showers

Thursday

52 °F

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


Partly cloudy

Thursday Night

42 °F

Partly cloudy


Mostly cloudy

Friday

61 °F

Mostly cloudy and warmer


Partly cloudy

Friday Night

39 °F

Partly cloudy


Mostly sunny

Saturday

66 °F

Mostly sunny


Mostly cloudy w/ t-storms

Saturday Night

43 °F

Mostly cloudy with showers and thunderstorms late


Mostly cloudy

Sunday

72 °F

Mostly cloudy with a thunderstorm in spots in the afternoon


Intermittent clouds

Sunday Night

44 °F

A thunderstorm in the evening; otherwise, becoming clear


Sunrise and Sunset

Sunrise
5:51 AM
Sunset
8:03 PM

Based on AccuWeather data