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Thursday Update: The Front Range Forecast: Slight chance of snow, cold Friday, then another warmup

In Brief:

Friday is chilly, windy, with a bit of snow, then we become dry and 'warm' again.

Thursday Update:

Another windy cold system will sweep down the state Friday.  You will really feel the chill. The I-25 cities will not see much except maybe Denver that may pick up an inch or two of snow (Figure 2 update). Other locations may see a dusting to an inch. Sadly, this is not a big storm for Colorado this time.

Figure2u_01132021
Figure 2 update: the 2 day snowfall total forecast for Colorado from weather5280.com and the GFS.

End Thursday Update.

Tuesday Update:

Other than a cold front on Friday that brings mountain snows and a chace of snow showers along I-25 (with a short cool down) - things remain dry and above normal for the next 10 days.  Sorry all!

Figure1u_01112021
Figure 1 update: the 10 day graphical forecast for Denver from weatherunderground.com

End Tuesday Update.

 

Forecast Discussion:

The storm played out as advertised.  It was a rough commute last night with blowing snow, icy conditions and fog at times. Figure 1 shows snow reports as of 7 a.m. Thursday.  Longmont got 4.5-6.5 inches. Boulder received 7-11 inches.  Figure 2 shows the Denver Metro where sites around Broomfield received 5-6 inches. Temperatures went down to +/- 0F. 

Figure1_01062022v2
Figure 1: The CoCoRaHS new snowfall reports for Thursday 7am. (Repaired).

 

Figure2_01062022
Figure 2: the CoCoRaHS snowfall reports as of Tuesday AM for the Denver Metro.

The Longer-Range Forecast:

There are about three weak cold fronts coming this week (Figure 3) that is powered by the trough marked in red in Figure 4.  The first one gives us a chance of of snow Saturday night.  Amounts look to be around a dusting to an inch of snow from Longmont to Broomfield (Figure 5).  I'll update as needed here. After that, we have a stretch of dry weather with highs around 50F with little additional snow in northern Colorado.  You can see evidence of a good southern Colorado storm sometime later in the 10-day forecast window.

 

Figure4_01062022
Figure 4: the 500mb upper air forecast map for Saturday PM from the GFS and tropicaltidbits.com
Figure5_01062022
Figure 5: the 5 day (10:1 ratio) total snowfall forecast from the GFS and weather5280.com
Figure6_01062022
Figure 6: the 10 day (10:1 ratio) total snowfall forecast from the GFS and weather5280.com

 


About the Author: John Ensworth

John Ensworth works from Longmont as the Principle Investigator for the NASA Science Mission Directorate Earth and space science education product review through the IGES (The Institute for Global Environmental Strategies – www.strategies.org).
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Current Weather

Mostly cloudy

Mostly cloudy

67°F

UV Index
0 Low
Pressure
30.14 Steady
Visibility
8 miles
Dewpoint
59 °F
Humidity
76%
Wind
SSE 1.7 mph
Gust
3.3 mph
Wind Chill
67 °F

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7 Day Forecast

Mostly cloudy w/ t-storms

Monday

80 °F

Not as warm with more clouds than sun; a heavy thunderstorm this afternoon; watch for flooding


Thunderstorms

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61 °F

A thunderstorm this evening; otherwise, cloudy most of the time


Mostly cloudy w/ t-storms

Tuesday

82 °F

Variable clouds with a strong thunderstorm in spots in the afternoon


Partly cloudy w/ t-storms

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A thunderstorm on the prowl in the evening; otherwise, clear to partly cloudy


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58 °F

Mainly clear


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Thursday

89 °F

Mostly sunny and beautiful


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58 °F

Mainly clear


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Friday

84 °F

Partly sunny with a thunderstorm in spots in the afternoon


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