Autumn/Fall 2017 Thread (Sept-Oct-Nov) (warm, average, temperatures, Chicago)

[Cambium]

Originally Posted by speagles84

Snow in the High Alleghenies?!?!?!

Nice! Maybe flurries down to 1500'? but that's too detailed to know right now. Wouldn't be anything unusual.

Originally Posted by ral31

Down to 42F at 7 AM! A bit cooler than forecast.

This is the coolest it's been since March 16.

Nice! Seems like you had a bigger cool down than I did given the time frame between our lows.

Originally Posted by speagles84

Nice! Wow, very chilly morning for you! I was in a rush this morning and didn't check my PWS for the low, I'm excited to get home to see what it was. The ground looked actually frozen so I may have hit 28°

I'm curious as well. My low was 38.2 but the surface was 31-34


I placed a thermometer at the ground and it was showing 34° while my air temp was 38.2...


I was wondering why it wasn't 32 at the ground but then realized plastic doesn't radiate as well as the grass blades do, the grass blades with frost was 32° obviously (frozen liquid).

[nei]

I saw thick frost on some lawns even at 8:40 am. Looks like all of Vermont reached freezing, even Burlington which is milder due to Lake Champlain

https://twitter.com/TylerJankoski/st...18613558579200

[Cambium]

Originally Posted by nei

I saw thick frost on some lawns even at 8:40 am. Looks like all of Vermont reached freezing, even Burlington which is milder due to Lake Champlain

https://twitter.com/TylerJankoski/st...579200/photo/1

Wow at VT... My frost was gone by 8:45 with sun up.


Here are the lows for the day.





Sorted by lowest temp for state of Massachusetts. Just change state abbreviation in link for other states. (Air = Current temp)

[FirebirdCamaro1220]

29.4°C with a dewpoint of 7.2°C at 9am Pacific Time

[Cambium]

Last post for today..


We go from this this week........... 70s up to North Dakota Friday, Above normal 60s/70s east of Rockies. 80s for south most likely.






To this.......









With that jet diving down like that, lots of cold air going to spill in next week...


GFS12z 850mb temp anomalies for next Wednesday afternoon as the front is pushing off the coast.

[tar21]

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Frosty cold morning in WNY. This taken in Machias ny. <a href="https://t.co/t5KyJJne8P">pic.twitter.com/t5KyJJne8P</a></p>&mdash; Robert Speta (@WHEC_RSPETA) <a href="https://twitter.com/WHEC_RSPETA/status/920290265973362689?ref_src=twsrc%5Etfw">October 17, 2017</a></blockquote>
<script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>
https://twitter.com/WHEC_RSPETA/stat...90265973362689

[Isleofpalms85]

^^^^^^^^^^^^^^^^


And as usual, the Midwest/Ohio Valley gets the worst of the cold shots.

[Infamous92]

Originally Posted by ral31

Down to 42F at 7 AM! A bit cooler than forecast.

This is the coolest it's been since March 16.

That’s colder than I got (46F), which was the coolest temp here since May 14 (also 46F).

Last time I got as low as 42F was on April 9.

[FirebirdCamaro1220]

33.9°C with a dewpoint of 7.8°C at noon Pacific Time

[BullochResident]

52 F here this morning. Now up to 70 F. Tonight will be dropping into the 40s.

Originally Posted by Infamous92

That’s colder than I got (46F), which was the coolest temp here since May 14 (also 46F).

Last time I got as low as 42F was on April 9.

The moderating power of water.

Originally Posted by Cambium

Last post for today..


We go from this this week........... 70s up to North Dakota Friday, Above normal 60s/70s east of Rockies. 80s for south most likely.






To this.......









With that jet diving down like that, lots of cold air going to spill in next week...


GFS12z 850mb temp anomalies for next Wednesday afternoon as the front is pushing off the coast.

Current 10 day for my area shows high of 84 F Friday and Saturday and a low of 46 F the night of the 25th.