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The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – March 19, 2018

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

Forecast Discussion:

The storm is underway this Sunday evening.  I've had 1.5 inches of snow fall already - along with a good amount of rain beforehand. Rain changed to snow about 6:30pm - 1.5 hours earlier than I expected (but that is not TOO bad).

Figure 1 shows the snow and rain falling Sunday PM across the regions. Figure  2 shows that we have received about 0.2 inches of rainfall already.  The yellow dot is estimated at 2 inches of water.  Wow!

Figure 1: Radar Scope live radar view from around 9pm Sunday.

Figure 2: Radar Scope storm precipitation accumulation view from around 9pm Sunday.

The longer range forecast:

We'll have another ripple in the jet stream move over late today - so rain chances go up briefly before sunset.  Things get REALLY mild and nice until a very wet change arrives next Sunday through Tuesday and beyond.  We'll watch that all week!

Figure 3: The 10- day graphical forecast for Longmont from weatherunderground.com

Current Weather

Cloudy

Cloudy

52°F

UV Index
1 Low
Pressure
29.55 Rising
Visibility
8 miles
Dewpoint
24 °F
Humidity
35%
Wind
W 10.5 mph
Gust
26.5 mph
Wind Chill
52 °F

Hourly Forecast

Today
5 PM
52°F
Showers
Today
6 PM
52°F
Cloudy
Today
7 PM
52°F
Cloudy
Today
8 PM
51°F
Mostly cloudy
Today
9 PM
51°F
Intermittent clouds
Today
10 PM
49°F
Intermittent clouds
Today
11 PM
49°F
Partly cloudy
Tomorrow
12 AM
48°F
Mostly clear
Tomorrow
1 AM
47°F
Mostly clear
Tomorrow
2 AM
46°F
Mostly clear
Tomorrow
3 AM
44°F
Mostly clear
Tomorrow
4 AM
43°F
Partly cloudy

7 Day Forecast

Showers

Monday

57 °F

Strong winds developing; mostly cloudy and cooler with a few showers


Intermittent clouds

Monday Night

42 °F

Partly cloudy and breezy


Partly sunny w/ showers

Tuesday

60 °F

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


Partly cloudy

Tuesday Night

33 °F

Partly cloudy


Intermittent clouds

Wednesday

58 °F

Cool with times of clouds and sun


Mostly cloudy

Wednesday Night

35 °F

Increasing clouds


Partly sunny w/ showers

Thursday

56 °F

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


Cloudy

Thursday Night

43 °F

Cloudy


Mostly cloudy

Friday

62 °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