Pattern Change on the Horizon will Bring Falling Temperatures Next Week

This week has been phenomenal, with highs climbing into the 70's for the past several days. The great weather continues into the first half of the weekend, with 70's in the forecast through Saturday.

We won't notice as much sunshine Saturday, compared to the rest of the week, as moisture levels and clouds increase ahead of our next cold front. Our first cold front will pass Sunday, and will bring temperatures back near average, with highs in the 60s's through Monday. The reason it won't 'cool off' too much, is because the air mass behind the front originated in the Pacific Northwest. Air masses from this area are typically mild in nature.

However, there is a pattern change on the horizon that will drop temperatures even more, and even has the potential to bring on the first freeze of the season. To find the reason for the pattern change, you have to look west......way west. We set our sights on the Pacific Ocean, near the Philippines. This is where now Typhoon Lan is positioned, to the east of Manilla. Typhoon Lan is forecast to strengthen to a Super Typhoon as it nears Japan this weekend. As Lan moves north, it forces jet stream winds north as well, and they strengthen. This will shuffle multiple lows along those jet winds this week. There will be a stronger low moving into the Gulf of Alaska into the weekend, which will create divergence and strengthening in the jet stream winds. As this happens, it will dislodge a colder Canadian air mass that will dive south across the Midwest, Plains, and east coast next week. Temperatures will crash into the low to mid 50's by the middle of next week, but overnight lows have the potential to fall into the 30's. This could prompt the first freeze of the season! Typically the first freeze occurs on average the 10th of October.