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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

Mostly cloudy

Mostly cloudy

53°F

UV Index
3 Moderate
Pressure
29.53 Rising
Visibility
8 miles
Dewpoint
23 °F
Humidity
31%
Wind
W 11.7 mph
Gust
27.8 mph
Wind Chill
53 °F

Hourly Forecast

Today
3 PM
55°F
Showers
Today
4 PM
55°F
Cloudy
Today
5 PM
55°F
Cloudy
Today
6 PM
55°F
Cloudy
Today
7 PM
55°F
Cloudy
Today
8 PM
53°F
Mostly cloudy
Today
9 PM
51°F
Intermittent clouds
Today
10 PM
49°F
Intermittent clouds
Today
11 PM
48°F
Partly cloudy
Tomorrow
12 AM
47°F
Mostly clear
Tomorrow
1 AM
47°F
Mostly clear
Tomorrow
2 AM
45°F
Mostly clear

7 Day Forecast

Mostly cloudy w/ showers

Monday

57 °F

Strong winds developing; cooler with variable cloudiness, brief showers this morning followed by a shower in spots this afternoon


Intermittent clouds

Monday Night

41 °F

Partly cloudy


Partly sunny w/ showers

Tuesday

58 °F

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


Partly cloudy

Tuesday Night

33 °F

Partly cloudy


Intermittent clouds

Wednesday

60 °F

Times of clouds and sun


Mostly cloudy

Wednesday Night

38 °F

Increasing clouds


Partly sunny w/ showers

Thursday

56 °F

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


Cloudy

Thursday Night

37 °F

Cloudy


Mostly cloudy

Friday

62 °F

Mostly cloudy and warmer


Mostly clear

Friday Night

36 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:53 AM
Sunset
8:01 PM

Based on AccuWeather data