*** Paul Piorek is editor and publisher of Paul's Local Weather Journal for southwestern Connecticut ... Paul is the on-air meteorologist at WICC 600 AM and 107.3 FM ... Paul is a New York Emmy award winner (2007), five-time Emmy nominee, and four-time winner of the Connecticut Associated Press Broadcasters' Association award for Best TV Weathercast (2006, 2008, 2009, 2012) ... Paul was voted Best Local Television Personality by the readers of Fairfield County Weekly Magazine (2012) ... Paul was inducted into the Housatonic Community College Hall of Fame and received the Distinguished Alumni Award (2012) ... The local weather journal is a two-time winner of the Communicator Award of Distinction (2012 & 2013) ... Paul is currently a full-time teacher of Earth Science and Mathematics in Fairfield ... Follow Paul on Twitter @PaulPiorekWICC ...

Tuesday, July 23, 2013

Dew Point Streak Unprecedented

This month will long be remembered for the longest heat wave on record in southwestern Connecticut. The mercury topped 90 degrees for seven straight days from Sunday, July 14, through Saturday, July 20. The previous record of six straight 90-degree days happened twice, July 7 through July 12, 1993, and July 16 through July 21, 1991.

However, another impressive streak is unprecedented in these parts. The dew point has climbed to 70 degrees or above for 30 straight days. That dwarfs the previous record of 21 straight days in 1988. When the dew point reaches 65 degrees or higher, it becomes uncomfortable. The air is tropical and oppressive once the dew point reaches 70 degrees. This has happened every day for over four weeks!


Take a look at the following chart created by local climatologist Ralph Fato. It shows the maximum number of consecutive days with dew points of 70 degrees or higher over the last 30 years. Notice that 23 of the 30 years had the highest number of consecutive days with 70+ dew points in the single digits. Six of the previous 30 years had streaks in the double-digits, including 16 straight days in 1995, 2003, and 2010. There was a 15-day streak in 1994. Click the chart to enlarge.


As for the heat, the average temperature this month is 80.6 degrees, making this the hottest July and hottest month ever on record. That's 6.5 degrees above normal and 2.2 degrees above the record of 78.4 degrees in 1994. All but two days this month have been warmer-than-normal, and there have been eight days with an average temperature of at least 10 degrees above normal. The warmest temperature this month was 95 degrees on July 16.

The dew point should hold close to 70 degrees after midnight tonight before it begins to drop into the 60s tomorrow. The streak will finally come to a close Thursday when dew points are expected to drop into the 50s across the region. By that time, we'll finally have a chance to breathe. This month has been record setting as far as heat and humidity are concerned. Quite frankly, I can't wait for Autumn.

Paul