We have been warning our followers for several days about this threat. Details are especially coming into focus now that we are just three days out. Here is what we know as of Thursday Evening.

        A low pressure system moving across the Eastern Great Lakes will partner with a cold front, sweeping through the area Sunday Afternoon into the Evening. CAPE will top out near 2,000 J/kg, and the lifted index will be in the range of -5 to -6 across much of Central and Eastern PA. All mentioned factors support the development of widespread severe thunderstorms.

        There will not be as much cloud cover as originally expected, opening the door for more instability in the atmosphere. Furthermore, storms will be moving from west to east ahead of the cold front. Timing will be important because the location of the front will determine the location of the storms. Where the storms are located in the late afternoon/early evening will be the area at the greatest risk for severe thunderstorms.

        Here is our updated Severe Thunderstorm Threat Map (with key below it), along with a Main Risks Graphic, take a look!

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SEVERE THUNDERSTORM SCALE

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        We will be providing the latest information on this high threat in the coming days. We will also be posting all watches and warnings on our facebook page, like us by clicking here! Stay safe everyone!

Josh has been passionate about weather as long as his memory dates! From watching the Weather Channel at age 7, to making hand-drawn hurricane maps at age 11, starting his first weather site at 13, and founding PWA at 15 and forecasting for the state for the past 9 years, Josh's interest in weather has never dwindled! As difficult as it is, he greatly enjoys forecasting for Pennsylvania due to its countless microclimates. The state is an East Coast severe weather hotspot and nearly always home to the rain/snow line during winter storms!