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Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – February 19, 2019

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

Forecast Discussion:

(Posting early again...) Some parts of the Front Range have received many inches of snow, but in town, we've only received about 1/4 to 1/2 inch. The NWS has a bulletin issued concerning the cold and snow around the Denver Metro for the next 48 hours (Figure 1).

The temperatures are still too high on Figure 2 (from weatherunderground.com) we are only at 15F at 1pm. The HRRR (Figure 3) through 1am tonight shows virtually no snow at all, but models show that another surge of snow will move up the front range tonight. For the next 24 hours (Figure 4) the weather5280.com forecasters still give us a trace to 3" (the low end is more likely). The GFS in Figure 5 has Longmont in a snow-hole (as always) from down slope flow. The GFS has us in the trace to 1 inch zone for the next 48 hours

The longer range forecast:

Figure 2 snows another inch of snow coming in Friday/Saturday with temperatures staying around freezing each day. A nice period of winter!


Figure 1: weather highlights from the NWS Boulder
Figure 2: the graphical forecast for the next 10 days for Longmont, CO from weatherunderground.com
Figure 3: the forecast accumulated snow map from the HRRR and weather5280.com for Colorado, through Tuesday 1am.
Figure 4: The hand drawn 24 hour snow forecast from the forecasters at weather5280.com published on the public post Monday afternoon.
Figure 5: the forecast accumulated snow map from the GFS and weather5280.com for Colorado, through Tuesday PM.

Current Weather

Sunny

Sunny

57°F

UV Index
4 Moderate
Pressure
29.6 Steady
Visibility
8 miles
Dewpoint
45 °F
Humidity
64%
Wind
WNW 3.8 mph
Gust
12.1 mph
Wind Chill
57 °F

Hourly Forecast

Today
10 AM
59°F
Cloudy
Today
11 AM
61°F
Cloudy
Today
12 PM
64°F
Cloudy
Today
1 PM
66°F
Mostly cloudy
Today
2 PM
68°F
Mostly cloudy
Today
3 PM
70°F
Mostly cloudy
Today
4 PM
69°F
Mostly cloudy
Today
5 PM
66°F
Cloudy
Today
6 PM
63°F
Thunderstorms
Today
7 PM
59°F
Cloudy
Today
8 PM
56°F
Cloudy
Today
9 PM
53°F
Cloudy

7 Day Forecast

Thunderstorms

Friday

70 °F

Mostly cloudy with a couple of thundershowers this afternoon; gusty winds and small hail can accompany any downpour


Thunderstorms

Friday Night

44 °F

Cloudy; a couple of showers and a thunderstorm this evening followed by periods of rain late; gusty winds and small hail can accompany any downpour


Rain

Saturday

47 °F

Chilly with periods of rain and a thunderstorm; travel in the foothills and mountains will be slippery due to snow


Rain and snow

Saturday Night

36 °F

Cloudy with rain, mixed with a little snow late; travel in the foothills and mountains will be slippery due to snow


Mostly cloudy

Sunday

61 °F

Mostly cloudy and warmer


Intermittent clouds

Sunday Night

36 °F

A thunderstorm in spots in the evening; otherwise, partly cloudy


Partly sunny

Monday

71 °F

Partly sunny, pleasant and warmer


Partly cloudy

Monday Night

45 °F

Partly cloudy


Mostly sunny

Tuesday

73 °F

Pleasant with sunshine and patchy clouds


Partly cloudy

Tuesday Night

43 °F

Partly cloudy


Sunrise and Sunset

Sunrise
6:06 AM
Sunset
7:51 PM

Based on AccuWeather data