Good morning bloggers,
KCI Airport hit 100 degrees for the first time this year on Sunday. And, today will be our third day in a row of officially reaching 95° or higher which means this is a heat wave. We are forecasting a high in the upper 90s this afternoon.
The weather pattern is about to go through a massive transition as the new LRC begins setting up in three to four weeks. Unfortunately we are still in the final stages of last year’s weather pattern and I am ready for the change. Some changes are already in motion this week, but it is really an intensifying early fall version of last year’s pattern. The new pattern is still around 15 to 25 days from beginning to show up.
The map above shows the 500 mb flow valid at 7 PM this evening. There are some subtle changes going on and there are a few things to monitor this week. First of all, the upper high has weakened and shifted east this morning but it is still over Missouri today. There is an upper level disturbance over the southwestern United States that may combine with a front to bring us an increasing chance of rain around Sunday. There is another system crossing the USA/Canada border that will drag a weak cold front through us Wednesday into Thursday. A chance of thunderstorms will arrive with the front as well. And, the jet stream is strengthening over Canada in response to colder air masses now beginning to form far to the north.
At least these changes are showing up. September is supposed to be a wet month and it should be easier to produce rain. Let’s see what happens with this week’s rain chances. In the mean time, it’s a September heat wave that will last a bit longer.
Tropical Storm Humberto has formed off the west coast of Africa. It is forecast to become a hurricane by Wednesday, and this would tie for the latest first hurricane ever recorded. Let’s see what happens, but Humberto seems to be organizing fast.
Thank you for spending a few minutes reading the Action Weather Blog. Let us know if you have any thoughts or questions. Have a great start to the week.