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The Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – July 6th and 7th, 2018

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

Forecast Discussion:

This post brings us to the 1/2 mark of my camping trip the northern Colorado.  We are under a flash flood watch as I type today.  Thursday PM (yesterday) promised to be very stormy along I-25 with a marginal risk.  But that hasn't happened yet as I type.

After the "fun" of Thursday, the upper level ridge will move/expand westward.  It dominates the eastern 2/3rds of the nation and will really heat things up again.  Often moisture gets trapped under a ridge and is available for thunderstorm formation in the afternoons when heating hits a maximum.

Figure 1 shows the first three days of the forecast period as reaching near peak heat again with afternoon thunderstorms possible. With moisture around, the heat index (temperature + moisture levels) will be very high.  We get very dry early in the week as the ridge moves a bit further west giving us northwest flow.  Southwest flow returns midweek and a cool front might enter the state to bring back showers (and severe chances out on the plains?).

More in a couple of days!

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

Current Weather

Mostly cloudy

Mostly cloudy

55°F

UV Index
0 Low
Pressure
29.94 Steady
Visibility
7 miles
Dewpoint
39 °F
Humidity
54%
Wind
N 2.2 mph
Gust
4.3 mph
Wind Chill
55 °F

Hourly Forecast

Today
10 PM
54°F
Mostly cloudy
Today
11 PM
51°F
Mostly clear
Tomorrow
12 AM
49°F
Mostly clear
Tomorrow
1 AM
48°F
Mostly clear
Tomorrow
2 AM
46°F
Mostly clear
Tomorrow
3 AM
45°F
Mostly clear
Tomorrow
4 AM
43°F
Mostly clear
Tomorrow
5 AM
42°F
Mostly clear
Tomorrow
6 AM
39°F
Mostly sunny
Tomorrow
7 AM
41°F
Mostly sunny
Tomorrow
8 AM
47°F
Intermittent clouds
Tomorrow
9 AM
53°F
Intermittent clouds

7 Day Forecast

Intermittent clouds

Saturday

64 °F

Cooler with clouds giving way to some sun


Mostly clear

Saturday Night

39 °F

A shower in spots this evening; otherwise, clear to partly cloudy


Mostly cloudy

Sunday

78 °F

Cloudy most of the time, breezy and warmer


Mostly cloudy

Sunday Night

47 °F

Rather cloudy and windy


Windy

Monday

60 °F

Very windy; cloudy and cooler


Intermittent clouds

Monday Night

41 °F

Partly cloudy


Intermittent clouds

Tuesday

59 °F

Cool with times of clouds and sun; windy in the afternoon


Partly cloudy

Tuesday Night

32 °F

Partly cloudy


Intermittent clouds

Wednesday

60 °F

Times of clouds and sun


Intermittent clouds

Wednesday Night

35 °F

Partly cloudy


Sunrise and Sunset

Sunrise
5:55 AM
Sunset
7:59 PM

Based on AccuWeather data