It wouldn't be April in Philadelphia without having temperature forecasting headaches -- and hangovers -- from the afterglow of an 80 degree day in the city. Temperatures have been on an impressive roller coaster ride -- jumping 25 degrees from Tuesday to Wednesday in Philadelphia, only to see the "official" daytime high drop another 15 degrees from yesterday to 1 AM this morning in Philadelphia. Philly has been the home to impressive swings in temperature as of late -- we've shown larger bounces just a week ago. However, unlike last week this week's bounces were really the most significant in Philadelphia.
Allentown and Reading had smaller, less impressive, hikes in temperature between Tuesday and Wednesday -- Reading bouncing up 21 degrees, Allentown just 16 as cooler air held much later in the afternoon in the Lehigh Valley and Berks and prevented larger temperature climbs from taking place. Likewise, Millville climbed 14 degrees between Tuesday and Wednesday as they were able to avoid showers for a longer period of time on Tuesday and were in the warm sector for a while before winds nudged off of the Atlantic and cooled them off.
If anything, this pattern shows how fickle frontal boundaries can be at this time in the year as winter chill gasps for its last signs of life and the strengthening of the Southeast ridge can help negate cold air pushes...or stall them out into fickle boundaries that can screw up forecasts and cause large day-to-day temperature fluctuations.
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