Smoke Sticks Around & Cool Change Coming
Grab Your Camera!
Smoke from wildfires out west continued to give the sun a hazy or milky appearance Tuesday. It will be with us again today. It made for a spectacular sunrise as captured by Barry Butler. The sunset wasn't too shabby either.
I snapped the sunset last night when the sky had an orange hue. Smoke particles scatter out the red and orange colors from the visible light spectrum at sunrise and sunset. Smoke will still be in our sky today so get set for another beautiful sunset.
The HRRR vertically integrated smoke forecast for this afternoon shows smoke stretching from the west coast to the east coast and right through the midwest. Some of that smoke may be dragged closer to the surface (within a few thousand feet) tonight after a cold front comes through but it should not have a significant impact on air quality here.
Canadian Cool Down
We are following the warmest summer on record for Chicago with a warm start to September so far. Through Tuesday the month is running about 1° above average. While it is relatively warm it is much closer to average than what we saw over the summer.
Today should be the warmest day of the week. Some sunshine and a west wind will push our highs into the lower 80s.
A cold front will cross through the area tonight and the drop in temperatures from this afternoon to Friday morning will be dramatic. We will wake up to temperatures Friday that will be about 30-35° cooler than today's highs. Lows Friday morning away from the city will fall into the 40s.
We should only be cool for a couple of days though. We will warm back up into the 70s by Sunday. The signal is growing stronger from temperature probability forecasts that a warmer than average pattern will settle in for the end of September.
The 6-10 day forecast has us outlooked for above average temperatures overall from September 21st through the 25th. A greater probability for above average temperatures is shown in the 8-14 day forecast from September 23rd through the 29th.
Rain Chances Few & Far Between
As the cold front crosses through this late this afternoon and this evening it could squeeze out a few spotty showers. There isn't much moisture for the front to work with so most of us should be dry tonight. There is also a chance for a spotty sprinkle coming in off the lake early Thursday morning. After these small chances for rain the pattern dries out. There is no significant chance of rain all the way through most of next week.
The longer range precipitation probability forecasts keep us relatively dry through the end of the month. Both the 6-10 day and 8-14 day forecasts have us outlooked for below average precipitation overall for end of this month.
Here is my 7 day forecast:
Today: Partly to mostly sunny, hazy, breezy High: 82
Thursday: Mostly sunny, breezy Low: 57 High: 67
Friday: Mostly sunny Low: 49 High: 64
Saturday: Mostly sunny Low: 48 High: 66
Sunday: Mostly sunny Low: 49 High: 69
Monday: Mostly sunny Low: 54 High: 74
Tuesday: Mostly sunny Low: 58 High: 75