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6PM Update: Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – January 1, 2019

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

Forecast Discussion:

6pm Update:

The forecast turned out pretty close to my forecast...

Longmont received about 1/2 inch, Boulder received 2-4 inches.  Now for a long cold night...

Figure 1 update: The snowfall totals as of 7am Tuesday 1/1/2019 from CoCoRaHS.

End 6pm Update.

Posting early, before the eggnog takes hold... snow is tapering off and I'll update with snow reports in the am (official reporting is at 7 am MT). Immediately, the critical item is the cold tonight. The NWS has issued a...

Wind Chill Advisory

Issued: 6:54 PM Dec. 31, 2018 – National Weather Service

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST TUESDAY...

...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS

AFTERNOON...

* WHAT...Very cold wind chills expected. Wind chills as low as

20 below zero expected.

* WHERE...Denver, Boulder and the western suburbs of Denver.

* WHEN...Through 8 AM MST Tuesday.

* ADDITIONAL DETAILS...The cold wind chills could cause

frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will

combine to create low wind chills. Frostbite and hypothermia can

occur if precautions are not taken. Make sure you wear a hat and

gloves.

The longer range forecast:

Figure 1 shows the likely upper teens F high for today (Tuesday) as snow flurries taper off in the early morning. Temperatures rocket up as a ridge builds in the West giving us possible 60's F for a high on Friday. Wow.

The 'mimic' storm next weekend has become less of an 'item' at present. We'll watch it as the new year begins. Happy New Year all!

Figure 1: the graphical forecast for the next 10 days forecast for Longmont, CO from weatherunderground.com

Wind Chill Advisory

Current Weather

Light rain

Light rain

55°F

UV Index
0 Low
Pressure
29.68 Rising
Visibility
8 miles
Dewpoint
40 °F
Humidity
57%
Wind
NNW 4.3 mph
Gust
11 mph
Wind Chill
55 °F

Hourly Forecast

Today
10 PM
54°F
Cloudy
Today
11 PM
54°F
Cloudy
Tomorrow
12 AM
53°F
Cloudy
Tomorrow
1 AM
52°F
Cloudy
Tomorrow
2 AM
51°F
Cloudy
Tomorrow
3 AM
51°F
Cloudy
Tomorrow
4 AM
50°F
Cloudy
Tomorrow
5 AM
51°F
Cloudy
Tomorrow
6 AM
51°F
Cloudy
Tomorrow
7 AM
52°F
Cloudy
Tomorrow
8 AM
56°F
Cloudy
Tomorrow
9 AM
59°F
Cloudy

7 Day Forecast

Mostly cloudy w/ showers

Thursday

72 °F

Turning cloudy, warm; an afternoon shower or two


Thunderstorms

Thursday Night

50 °F

A thunderstorm in parts of the area this evening; otherwise, considerable cloudiness and mild


Thunderstorms

Friday

70 °F

Mostly cloudy with a couple of thundershowers


Thunderstorms

Friday Night

43 °F

Cloudy with a couple of thundershowers


Rain

Saturday

46 °F

Chilly with periods of rain and a thunderstorm


Rain and snow

Saturday Night

39 °F

Cloudy with rain, mixed with a little snow late


Mostly cloudy

Sunday

59 °F

Mostly cloudy and warmer; a stray afternoon thundershower


Partly cloudy

Sunday Night

36 °F

Partly cloudy


Partly sunny

Monday

71 °F

Partly sunny, pleasant and warmer


Partly cloudy

Monday Night

42 °F

Partly cloudy


Sunrise and Sunset

Sunrise
6:07 AM
Sunset
7:50 PM

Based on AccuWeather data