The sun stays strong today, and with high pressure docked in Pennsylvania, the wind flow returns to the south and we’ll put a few more temperature points on the board. High pressure has the upper hand until Friday. The best chance of showers and storms is Friday afternoon and evening. Deja vu all over? Not quite. This week’s storms won’t rival the rain makers of last Friday, but you might still tailgate with an umbrella for Friday Night Football.
Today’s the day we lose the sun before 8pm in the evening. You should treasure every minute of September 11, 2012. For so many reasons.
I was on TV the morning of 9/11. I remember wrapping up the morning show with a wacky graphic showing the forecast for that evening’s Jimmy Buffet concert as (what is now) Klipsch in Noblesville.
That outdoor concert was cancelled. It would have happened under a clear sky. The beautiful blue sky over much of the Eastern US that morning is the backdrop for a million memories today.
After 9/11 you’ll recall that all commercial air traffic was grounded for three days. Airplanes produce contrails, those wisps of condensation that trail jets in the sky. Depending on the amount of moisture, you may see quite a few at any given time.
Meteorologists were curious as to how the lack of contrails would effect the weather. They found that for those three days, the average range between highs and lows at more than 4,000 weather stations across the US increased by 1.1 degrees Celsius (2 degrees Fahrenheit.) In other words, it was a bit warmer in the day and a bit cooler at night with the cloud competition.
The effect was biggest here in the Midwest and in the Pacific Northwest, probably because the combination of usual air traffic, and moisture-laden air. The effect would be smaller in the desert southwest.
The average high today is 80 and the average low is 58. The records are 95 and 39. Sunrise time is 7:23 and it sets at 7:59.
PAUL’S PREVIOUS PREDICTION
The high yesterday was 76. The forecast was 76.
It remains “medium-high” all the way through Friday.
DETAILED INDIANAPOLIS FORECAST:
Today: Sunny and warmer. High 81.
Tonight: Clear. Low 57.
Wednesday: Mostly sunny. High 83.
Wednesday Night: Mostly clear. Low 59.
Thursday: Partly cloudy. High 83.
Thursday Night: Partly cloudy. Low 62.
Friday: Partly to mostly cloudy with a chance of mainly afternoon showers and storms. High 80.
Friday Night: Shower and storm chances. Low 59.
Saturday: Partly to mostly cloudy with a slight chance of showers and storms. High 75.
Saturday Night: Partly cloudy. Low 56.
Sunday: Partly sunny. High 75.
Sunday Night: Mostly clear. Low 57.
Monday: Mostly sunny. High 76.