Extended Forecast for Sunday, April 10, 2011

As you may or may not know, I do the forecast for Phillyweather.net on Saturday Evening's. This is a plug for a very great site, rich in history about Eastern Pennsylvania, Delaware, and New Jersey for weather...in addition to excellent weather discussions! Check out phillyweather.net ....






Another severe weather outbreak from a potent feature has occurred today from Indiana down into South Carolina. This area has so far been getting hammered this past spring by severe thunderstorms and it appears that at least for the time being, this has developed into a weather pattern. Another outbreak of severe weather, potentially large, will develop in the northern half of the Midwest and this will slide east.

A warm front is moving northward and will arrive on Sunday Night. Ahead of the warm front, mostly cloudy skies and potential showers may develop. There could even be a few isolated thunderstorms on Sunday ahead of the front. All of this will slide to the north and east by early on Monday Morning.

The entire region should see skies clear on early Monday Morning, with northern sections observing the clearing line last. The sunshine will come out and the region will be entrenched well into a warm sector. Southerly winds, gusty at times, will pump in very warm air. Temperatures will likely range between 82 and 86 degrees across most of the region, with cooler readings in the Poconos. Some of our loyal site readers have done some research and have raised the prospect that we may squeeze out 90 degrees. At this point, I don’t believe it will be too widespread, but I will raise the maximum temperature to 86 degrees in Philadelphia. For Philadelphia International Airport, this could be a tricky scenario as a breeze off of the Delaware River could have a localized affect at the airport.

On Monday Night into very early on Tuesday Morning, a round of showers and thunderstorms is expected with a cold front. The cold front will likely arrive earlier in Central and Western Pennsylvania and this is where I anticipate a more widespread outbreak of severe thunderstorms. However, some instability will still be around in our region when the front arrives due to the near or actual record breaking temperature readings on Monday. Therefore, scattered severe thunderstorms are a possibility. It is still a little too early to speculate on the specific types of severe weather the region will see. Both the NAM and GFS really loose the convection at nightfall in our region.