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[Update 4/7 1PM] The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – April 7, 2018

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

Forecast Discussion:

[Saturday 4/7 1pm Update- Post storm reports.]

Figure 1 update shows the total water amounts (with rough division analysis of the amount binning generated by CoCoRaHS site) for the state. The northern mountains and northern front range definable won the water lottery this time!

Figure 2 update has Longmont in the 'just below' one inch snowfall amounts.  The higher foothills picked up a nice 4-8 inches. Figure 3 update has Estes Park pulling a nice 5-7 inches of snow while the western sides of Ft. Collins and Loveland getting a couple of inches.

Figure 4 update shows Denver getting much less snow (it was too warm).  The Rockies baseball game was still held (for better or for worse). One had to go to the foothills to the west to get a reliable 1 inch of snow.

Figure 1 update: CoCoRaHS 24 hr precipitation reports up to 7am today for all of Colorado. Color contours try to outline large scale patterns based on the key colors.

Figure 2 update: CoCoRaHS 24 hr snow reports up to 7am today for Boulder Co.. Color contours try to outline large scale patterns based on the key colors.

Figure 3 update: CoCoRaHS 24 hr snow reports up to 7am today for Larimer Co.. Color contours try to outline large scale patterns based on the key colors.

Figure 4 update: CoCoRaHS 24 hr snow reports up to 7am today for the Denver Metro. Color contours try to outline large scale patterns based on the key colors.

[End UPDATE]

Our current weather event is underway so I'll keep this brief and update with snow/water reports midday today (Saturday).  The next round of showers, actually caused by an upper air trough (missing in the Friday/Saturday snow storm) as it passes- will increase rain chances around 6pm tonight and continuing through the night to about 6am to 8am Sunday. The low Sunday morning should be 35F - don't expect much snow. Figure 1 shows the storm approaching the Four Corners area this afternoon, pumping warm moist air into the mountains. By midnight tonight, the low is near Raton and Trinidad and is pushing warm moist air uphill further to the east.

Figure 1: The GFS forecast precipitation type and intensity for 6 hours around Saturday night 6pm from tropicaltidbits.com

Figure 2: The GFS forecast precipitation type and intensity for 6 hours around Saturday night; 12am Sunday from tropicaltidbits.com

The longer range forecast:

Next week looks very mild (and dry) with temperatures quite close to 80F for highs on Wednesday and Thursday. Figure 3 is an example of the surface temperature departure from normal.  Amazingly warm! Tune in tomorrow for snow totals (we've had 10 hours of snow but maybe 1/2 to 1 inch build up in some grassy locations--- the ground is quite warm).

Figure 3: The surface temperature anomaly for Wednesday night from the GFS and tropicaltidbits.com

Current Weather

Cloudy

Cloudy

50°F

UV Index
1 Low
Pressure
29.46 Steady
Visibility
8 miles
Dewpoint
21 °F
Humidity
32%
Wind
W 10.5 mph
Gust
26.3 mph
Wind Chill
46 °F

Hourly Forecast

Today
9 AM
51°F
Showers
Today
10 AM
53°F
Cloudy
Today
11 AM
54°F
Cloudy
Today
12 PM
55°F
Cloudy
Today
1 PM
55°F
Cloudy
Today
2 PM
55°F
Cloudy
Today
3 PM
55°F
Cloudy
Today
4 PM
55°F
Cloudy
Today
5 PM
54°F
Cloudy
Today
6 PM
54°F
Cloudy
Today
7 PM
53°F
Cloudy
Today
8 PM
50°F
Mostly cloudy

7 Day Forecast

Windy

Monday

55 °F

Winds gusting past 40 mph; a shower in spots this morning; otherwise, cloudy and cooler


Windy

Monday Night

42 °F

Very windy this evening; partly cloudy


Partly sunny w/ showers

Tuesday

59 °F

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


Partly cloudy

Tuesday Night

32 °F

Partly cloudy


Intermittent clouds

Wednesday

60 °F

Times of clouds and sun


Intermittent clouds

Wednesday Night

38 °F

Partly cloudy


Intermittent clouds

Thursday

56 °F

Cool with times of clouds and sun


Cloudy

Thursday Night

39 °F

Cloudy


Intermittent clouds

Friday

62 °F

Times of sun and clouds


Mostly clear

Friday Night

40 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:53 AM
Sunset
8:01 PM

Based on AccuWeather data