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17233 |
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Date: September 07, 2020 at 08:31:31
From: Eve, [DNS_Address]
Subject: Drastic Denver temperature plunge could set historic record |
URL: https://www.accuweather.com/en/weather-news/drastic-denver-temperature-plunge-could-set-historic-record/808470 |
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Residents in Denver, Colorado, are set to experience summer and winterlike
temperatures within the span of just 24 hours.
Temperatures tied a record high of 97 degrees Fahrenheit in Denver on Sunday
afternoon, while a winter storm watch was in effect for the metro area. With
forecasters predicting a low of 33 degrees on Monday night, this could be a
record-setting temperature drop.
“This would be the earliest in recorded history that a swing of this magnitude
occurs,” AccuWeather Meteorologist Jake Sojda said.
Sojda said this is due to a powerful storm system and large dip in the jet stream
that will direct a shot of Arctic air into the Plains and central Rockies Monday
through Tuesday.
“The flat terrain of the High Plains allows strong, gusty northerly winds to push
the fresh Arctic air southward along the Front Range very quickly and efficiently.
The air doesn’t have time to moderate, leading to a very sharp change in
temperature,” Sojda said.
While Sojda says a 50- to 60-degree temperature change in one day is not
particularly uncommon in Denver, and has happened many times in the city since
weather data recording began in Denver in 1872, usually a surge of Arctic air like
this happens in the winter months. This will likely be the most significant push
of cold air between November and February.
“The previous record was from Sept. 19, 2010, when the temperature fell from 96 to
41 in one day, a 55-degree drop. The next earliest was Oct. 9, 2019, another 55-
degree drop when when the temperature went from a high of 83 to a low of 28,”
Sojda said.
The all-time record for the largest one-day temperature change occurred on Jan.
25th, 1872, when Denver fell from a high of 46 to a low of -20, a 66-degree
change, Sojda reports.
“With a forecast high in the low to mid-90s on Monday, and then a low in the low
to mid-30s Monday night, this event could fall in the top five all-time for one-
day changes, but will likely fall a little short of the all-time record,” Sojda
said.
Still, for it technically being summer, this is going to be a historic event.
"There was also a two-day temperature change of 76 degrees on Dec. 14, 2008, when
Denver went from a high 58 to a low -18,” Sojda said.
Severe thunderstorms are not expected to be triggered from this, according to
Sojda, but strong and locally damaging wind gusts as well as heavy snow in higher
elevations will be a problem.
“Because of the heat leading up to this, in cities like Denver, the ground and
especially paved surfaces will still have a lot of heat content. This is going to
make it difficult for snow to accumulate and snow totals will almost certainly be
much lower than if it were mid-winter. Still, elevated surfaces can still cool
very rapidly and turn icy. This could make bridges and overpasses icy, even if
snow isn’t piling up on the ground around them,” Sojda said.
Higher elevations, above 6,000 to 7,000 feet, will get colder, and the heat still
contained in the ground may be eliminated more efficiently, Sojda said, which
allows for more accumulation and even some slushy and icy roads.
“The drastic change in temperature can also have a big effect on infrastructure.
Railroads, in particular, are susceptible as the rail lines can warp and buckle
both with the extreme heat but also the extreme change,” Sojda said.
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Responses:
[17234] [17241] [17242] [17238] [17236] [17237] |
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17234 |
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Date: September 07, 2020 at 13:15:32
From: pamela, [DNS_Address]
Subject: Re: Drastic Denver temperature plunge could set historic record |
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Here too. We got 38 degrees F right now with rain, hail
and high wind warnings til midnight. And some power
outages in parts of town. I saw some snow flakes
falling too after the hail. Turned my heater back on.
Yesterday it was 82.
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Responses:
[17241] [17242] [17238] [17236] [17237] |
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17241 |
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Date: September 09, 2020 at 11:01:11
From: Awen, [DNS_Address]
Subject: How are the roads? |
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Here in Indiana we've had our roads buckle or split
with less extreme temperature shifts than
that....usually with a boom if anyone's nearby to
hear.
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Responses:
[17242] |
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17242 |
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Date: September 09, 2020 at 11:59:18
From: pamela, [DNS_Address]
Subject: Re: How are the roads? |
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pot hole city, due to city more concentrated on
installing LED lighting street lights and other things
than fixing the roads. Also installing more wifi shit.
Hasn't been that hot here and usually most cooler than
the rest of the country in summer.
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Responses:
None |
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17238 |
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Date: September 07, 2020 at 20:46:00
From: Eve, [DNS_Address]
Subject: Re: Drastic Denver temperature plunge could set historic record |
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That's quite a transition in short period of time.
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Responses:
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17236 |
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Date: September 07, 2020 at 13:36:45
From: Redhart, [DNS_Address]
Subject: Re: Drastic Denver temperature plunge could set historic record |
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wow, talk about weather whiplash!
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Responses:
[17237] |
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17237 |
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Date: September 07, 2020 at 20:44:41
From: Eve, [DNS_Address]
Subject: Re: Drastic Denver temperature plunge could set historic record |
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Responses:
None |
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