What is the Jet Stream?

Posted: July 30, 2014, 2:13 pm by jmartucci
Image above is of 300 mb winds and heights. The jet stream is shown by the dark blues and purples (maxing out at 170+ mph over northern New Hampshire)

“We should be smooth sailing today. The jet stream is at our back, making our flight arrive a half hour early.”

“ The jet stream is way to our south, bringing us very cold temperatures for the rest of the week.”

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Seasonal Temperature Lag

Posted: July 21, 2014, 1:48 pm by jmartucci

We are now well into July and many places in the Northeast are at their peak of summertime heat. Why is it that maximum temperatures are not in June, when the longest day of the year is typically on June 20th or 21st (the summer solstice)? As it turns out, the oceans and lakes we all like to visit for our long awaited summer vacations hold much of the answer to that question.

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Northeast 4th of July Weather Statistics

Posted: July 1, 2014, 12:16 pm by jmartucci

The fourth of July is almost here and much of the Northeast has firmly settled into a summer pattern. Average highs for the 4th are typically in the 80s for most locations, although some get close to 90°F near our nation's capitol and the Delmarva region (see the chart below). In general, the Northeast is no stranger to summertime scorchers, and the 4th of July has been known to bring temperatures into the triple digits on several occasions.

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Midwest Independence Day Weather Statistics

Posted: July 1, 2014, 11:41 am by jmartucci

The Fourth of July is nearly here and the Midwest has firmly settled into a warm pattern. Average highs for the 4th are typically in the mid-80s, with normal lows tending to fall back around or just below 65°F. With that being said, there has been a lot of variability over the years, with readings ranging the gambit from scorching hot, to at times, unusually chilly. Since 1872, Chicago has seen 25 days with highs reaching over 90 degrees (approximately 15% of days), while just two of those days saw the mercury climb to over 100°F.

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