A cool air mass will settle in late this week. Frost is possible over northern sections of the Commonwealth tonight. We also should break our string of rainy starts to the weekend, as the tables below show that the last 4 Saturdays have had rain at Williamsport and Harrisburg.

4400 AM Thursday May 30th, 2024: Friday morning will be another cold morning, before temperatures moderate during the afternoon hours.

Rain Ends Tonight with Pleasant Weather expected through Friday.

Severe Thunderstorm Warning continues for Greencastle PA, State Line PA and Mercersburg PA until 4:45 PM EDT

Severe Thunderstorm Warning including Chambersburg PA, Greencastle PA and State Line PA until 4:45 PM EDT

A special weather statement has been issued for Mifflintown PA, Port Royal PA and Thompsontown PA until 8:30 PM EDT

Here is the shelf cloud approaching our office associated with a line of showers and thunderstorms pushing eastward across the area. Wind gusts between 30-45 mph have been observed with this line.

Drier & cooler today with highs in the upper 60s & low to mid 70s (mountains 50s). Skies remain mostly to partly cloudy with clearing overnight. Some patchy frost is possible west of Allegheny Front where lows fall into the 30s. Lows elsewhere in the 40s & 50s. #MDwx #VAwx #WVwx

1:10PM-Showers & t-storms continue to increase in coverage as we head into the afternoon (through 6pm). Activity is scattered around the Baltimore/Washington DC metros with an organized line pushing east of I-81. Threats include gusts up to 50 mph, small hail, & heavy rainfall.

This morning's satellite imagery shows clouds associated with low pressure over Ohio pushing into western Pennsylvania. Clouds, showers, and perhaps some thunder, will expand across the region this afternoon as low pressure passes overhead. #ctpwx

🌫️ Localized valley fog will lower visibilities for the morning commute with rapidly changing conditions. Fog is expected to dissipate around 9AM this morning. ☔️⛈️ Showers and storms enter central PA later today and are expected to be more widespread compared to yesterday. #PAwx

Small river rises were seen yesterday due to isolated heavy rain. Dry conditions are now expected until Sunday.

A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN BLAIR AND SOUTH CENTRAL CAMBRIA COUNTIES THROUGH 300 PM EDT [wind: 40 MPH, hail: 0.25 IN] mesonet.agron.iastat…

Mostly dry conditions are expected throughout the day today. Cannot completely rule out an isolated shower or thunderstorm, mainly along and south of I-66 later today. #VAwx #WVwx #MDwx #DCwx

HARRISBURG PA May 29 Climate: High: 74 Low: 57 Precip: 0.03" Snow: 0.0" Snow Depth: 0" mesonet.agron.iastat… pic.twitter.com/WvXz…

Scattered shower and t-storm activity will gradually increase from west to east as we head into mid to late afternoon (through 7pm). Gusty winds (40-50 mph) and small hail are the primary threats with t-storm activity today as a cold front crosses the region. #MDwx #VAwx #WVwx