Severe Thunderstorms Expected Sunday & Monday; Flash Flooding & Damaging Winds Possible

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After what has seemed like a long break from severe weather, strong to severe storms will target the state Sunday and Monday. Much of the western half of the state has experienced abundant amounts of rainfall over the past few days due to non-severe, slow moving storms. Suburbs of Pittsburgh, Johnstown, and Altoona have all seen flash flooding over the past few days. With the ground waterlogged in many areas, it will not take much more rain for significant flash flooding to occur.


Area A – This includes Western PA as well as much of Northern PA. Main threats include flash flooding and damaging winds.

Area B – This includes Southcentral and Eastern PA with the exception of Philadelphia and surrounding counties. The main threat will be damaging winds.


The same areas that currently have a high flash flood risk will be the main target for Sunday’s Storms. Damaging winds will be a risk in all areas. Here is our risk graphic for Sunday (6/18).

The threat of hail and tornadoes will be relatively low, as shown above.


The Storm Prediction Center has already addressed the threat of severe thunderstorms for Monday. The highlighted region includes much of Eastern PA, extending down into Southcentral PA. At this point, threats include damaging winds, hail, and isolated tornadoes.

A sentence to keep in mind across the next few days is “Turn Around, Don’t Drown.” It only takes SIX inches of water to cause loss of control and potential stalling of most passenger cars. Warn your friends and family by sharing this article using the icons below, stay safe!

Hello, my name is Josh Adams. This year I am a junior in high school in South Central PA. I have had a passion for weather since I was five or six years old, watching the Weather Channel when the average kid my age was watching cartoons. At age 11, I discovered that there is a significant amount of weather info online from knowledgeable meteorologists to weather models and everything in between. I had the privilege to take part in a group that held informational weather discussions nearly everyday. I gained a significant amount of knowledge in several months back in 2012, constantly studying meteorology for hours each and just about every day. I created Northeast Weather Action in early 2013, just after the previous winter had ended. Things were pretty slow to start, however the winter of 2013-2014 greatly helped grow the page. Several of my forecasts verified nicely across the area. I met Chris during that winter in a facebook group, and we talked often about anticipated weather events. Just before the start of the 2014-2015 Winter, I added Chris to Northeast Weather Action (now Pennsylvania Weather Action), and once again we hit several key forecasts. Chris and I are looking forward to giving you the most up to date and reliable forecasts!

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