WXforum.net

General Weather/Earth Sciences Topics => Weather Conditions Discussion => Topic started by: alexstaar on December 16, 2016, 01:11:12 AM

Title: Interesting Obs from a station just west of Pueblo, CO
Post by: alexstaar on December 16, 2016, 01:11:12 AM
As the subject suggests, I found a very fascinating weather station (CWOP ID E5552) observation just west of Pueblo, CO from the morning of 12/15/16 ahead of the approaching winter system. The temp jumped from 36 to 65 in just 15 mins! Notice the wind direction shift... the wind shifted from upslope (E) to downslope (W) during this period which resulted in the wild temperature swing. Also notice the response of the different pressures ([from left to right] station, SLP, and altimeter). SLP dropped significantly (11.4 mb) to compensate for the then much less dense air, but altimeter only drops the same as the station pressure. A good example of the difference between SLP and altimeter. Check it out in the screenshots below!

 [ You are not allowed to view attachments ]

 [ You are not allowed to view attachments ]
Title: Re: Interesting Obs from a station just west of Pueblo, CO
Post by: W3DRM on December 16, 2016, 03:57:20 PM
Sounds like a typical Chinook wind. I can remember some huge temp swings occurring in short periods of time (hours) when I lived in Great Falls, Montana. I saw temp swings from -15F to around 45F in less than an hour. See the link below that defines the "Chinook" and also has a link to the greatest 24-hour temp swing in US history in Loma, Montana just north of Great Falls.
Title: Re: Interesting Obs from a station just west of Pueblo, CO
Post by: Scalphunter on December 16, 2016, 09:07:16 PM
What it sounds like to me here.  Can get them  here in  Fairbanks  where your -20  and in 24 hours be up to 40-50 deg above and snow gone in  nothing flat.  Old saying here

There no nookie like an chinookie.


John
Title: Re: Interesting Obs from a station just west of Pueblo, CO
Post by: alexstaar on December 17, 2016, 02:46:55 AM
Ah yes, I knew there was a name for it! Impressive stuff for sure!  \:D/