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Update 5/30 10am: Longmont Weather Update

For May 29-30, 2020 from the Cherrywood Observatory

Update 5/30 10am:

In Brief:

Expect above normal temperatures with more and sometimes fewer thunderstorms every day for the next week.

The 5/30 10am update:

Figure 1 update shows the Storm Prediction Center (SPC) is painting us with a marginal (1 on a scale of 1-5) risk of severe weather this afternoon.  Storm coverage will be better today and tonight than the past few days, but conditions are not great for severe weather.  I expect only a few cells to approach severe limits - which would include large hail and damaging winds.  More likely, many folks will see around 0.10 inch of water.  Sunday (Figure 2 update - another marginal risk) will be very similar to today, but storms and/or rain will be more widely scattered.   The real main threat, as always with thunderstorms, is lightning.  Be ready to seek shelter if you hear thunder.  Enjoy the warm beautiful weekend!

End of the 5/30 10am update.

Forecast Discussion:

The front that cooled things down on Thursday will drift off to the east brining on the heat (Figure 1 in the gallery). We'll see garden variety storms Friday afternoon with very warm (almost 90F) (Figure 2 in the gallery).  Enjoy your morning walk!

The Longer-Range Forecast:

Temperatures stay very warm through the weekend. Storms may become a bit more severe (barely) on Saturday afternoon with the heat and moisture in place (Figure 4 in the gallery). The big ridge over our heads is responsible for the warmth and the nearby trough to the west will help generate some lift (Figure 3 in the gallery). We will probably see the high temperature climb above 90F on Monday as the ridge gets even larger and stronger by the end of the weekend (Figure 5 in the gallery). There is a bit of a cool down and more storms Tuesday/Wednesday, next week (Figure 2), as a trough punches through the ridge (Figure 6 in the gallery). With a pattern like this, one has to look closely at the data for interesting changes!


About the Author: John Ensworth

John Ensworth used to work from Longmont as the PI for the NASA through the IGES (The Institute for Global Environmental Strategies). He now teaches technology, algebra, astronomy, meteorology, film school, and Lego robotics to middle/high school.
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Current Weather

Light rain

Light rain

50°F

UV Index
0 Low
Pressure
29.65 Steady
Visibility
7 miles
Dewpoint
44 °F
Humidity
80%
Wind
SSW 2.2 mph
Gust
6.1 mph
Wind Chill
50 °F

Hourly Forecast

Today
4 AM
50°F
Showers
Today
5 AM
51°F
Cloudy
Today
6 AM
51°F
Cloudy
Today
7 AM
52°F
Cloudy
Today
8 AM
55°F
Cloudy
Today
9 AM
60°F
Cloudy
Today
10 AM
62°F
Thunderstorms
Today
11 AM
65°F
Cloudy
Today
12 PM
68°F
Cloudy
Today
1 PM
67°F
Thunderstorms
Today
2 PM
70°F
Mostly cloudy
Today
3 PM
68°F
Mostly cloudy

7 Day Forecast

Mostly cloudy w/ showers

Thursday

72 °F

Turning cloudy, warm; an afternoon shower or two


Thunderstorms

Thursday Night

49 °F

Considerable cloudiness and mild; a thunderstorm in parts of the area in the evening followed by a brief shower or two late


Thunderstorms

Friday

70 °F

Mostly cloudy with a couple of thundershowers


Thunderstorms

Friday Night

45 °F

Cloudy with a couple of thundershowers


Rain

Saturday

48 °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


Partly cloudy

Sunday Night

36 °F

Partly cloudy


Partly sunny

Monday

71 °F

Partly sunny, pleasant and warmer


Partly cloudy

Monday Night

45 °F

Partly cloudy


Sunrise and Sunset

Sunrise
6:07 AM
Sunset
7:50 PM

Based on AccuWeather data