Relative Humidity vs Dewpoint

Posted: July 10, 2018, 12:06 pm by spatrick

This summer has had many days of hot and sticky weather. You may have checked on the humidity, only to find it was at a meager 50%. How could the humidity be so low, when it feels so high? The answer: dewpoint!!

Dewpoint is the temperature at which water vapor in the air condenses into liquid water, such as in the form of dew, fog, or possibly rain. The dewpoint is always lower or equal to the air temperature, hence why dew or fog often occurs during the early morning hours, when the air temperatures are typically lowest and the dewpoint highest.

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Start of 2017: A Taste of...Spring?

Posted: February 1, 2017, 5:35 am by spatrick

Our meteorologists enjoy the simple things in life, like watching the snow fall before coming into work. Photograph by Meteorologist Mark Miller. 

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Closing out the Year: December 2016

Posted: January 3, 2017, 7:15 pm by spatrick

Hoar frost that developed on Meteorologist Matt Potter's car in northeast Philadelphia on Christmas morning.

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What is Freezing Rain?

Posted: December 31, 2016, 10:30 am by spatrick

The heart of winter is upon us, and although rain may seem like a break from snow removal operations during season, it can be treacherous if it falls as freezing rain. But just what is the difference between freezing rain and "plain old" rain?

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A Tale of Two Regions: November 2016

Posted: December 5, 2016, 6:48 am by spatrick


Route 17 in Bergen County, New Jersey November 20, 2016


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All Four Seasons In One: October 2016

Posted: November 1, 2016, 3:19 pm by spatrick
The first frost of the season in Nazareth, PA, Oct. 11, 2016. Picture courtesy of meteorologist Mike Mihalik.


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Watches and Warnings: Hurricane Edition

Posted: October 6, 2016, 11:51 am by spatrick


Hurricane Matthew GR2 analyst radar image as it approaches Florida October 6, 2016


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Dry Start but Wet End for September 2016

Posted: September 29, 2016, 11:32 am by spatrick


The U.S. Drought Monitor map as of September 27th, 2016.


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Ending on a High Note: August 2016

Posted: August 30, 2016, 7:24 am by spatrick

August, the last month of meteorological summer, continued the streak of above-average monthly temperatures. Numerous areas within the mid-Atlantic saw near to just above half of the days of the month above 90 degrees, though New England had their fair share of hot and humid days (Boston and Hartford each reached a high of 98 degrees on August 12th!). Northern New Jersey through southern New Hampshire are still experiencing abnormally dry to drought conditions. Northeastern Massachusetts and southern New Hampshire have been the driest, dipping into an extreme drought this month.

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Wet & Stormy July: Some Drought Relief

Posted: August 2, 2016, 9:26 am by spatrick

July has remained relatively dry across the Northeast (with some exceptions, we'll touch upon that later). As of July 26th, before the locally heavy thunderstorms that plagued the region for the last few days of the month, many areas dipped further into a drought. This resulted in some water restrictions for areas that depend on reservoirs as their main water source, such as in northern New Jersey, Long Island, and parts of Connecticut.

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