Update Sun 08/07 @ 9:59 AM — No rain today. Heat index max from the latest 12z NBM model —
The high temperature forecast is now closer to 92º (from yesterday’s forecast of 93º) but forecast dew points are somewhat higher.
Show More
Update Sat 08/06 @ 10:01 PM — The models continue to forecast widely scattered light showers where none can be found. This will likely be the case again Sunday. Sunday will be mostly sunny, with occasional clouds. While scattered showers are forecast for late afternoon and evening, most areas will remain dry. High 93ª NBM model Blue Bell PA. Dew point temperatures in the mid to upper 60s- increasingly uncomfortable. Update Sat 08/06 @ 10:59 AM — This morning’s models keep us dry through the day Saturday. The anticyclonically curved flow causes the air to sink inhibiting storm development. Update Sat 08/06 @ 9:31 AM —This morning’s water vapor image shows the various potential triggers for showers and thunderstorms today— Showers and storms are possible anytime today, although most of the day will be dry in most places. Previously Posted Fri 8:36 PM — A diffuse summertime pattern with the moist flow of a Bermuda high in the Atlantic pushing back on a weak cold front that has been trying to move through Pennsylvania today. No specific model has correctly identified the timing and location of the storms the past two days. That likely will be the case over the weekend. For those hoping for rain, there is the possibility that a disturbance just to our west in Lancaster/York counties may still spark some storms later this evening. For Saturday, we remain in the hot moist airflow. Some models are forecasting scattered thunderstorms at any time during the day. The Canadian GEM is is pushing for some storms around noon to 1 PM on Saturday. The same pattern continues for Sunday. It will be difficult (maybe impossible) to accurately predict timing and location of any showers/storms. A mix of clouds and sunshine. A chance of showers and thunderstorms any time, especially noon/early afternoon according to the Canadian GEM High temperature 89.4º sd 3.3º NBM model Blue Bell, PA (higher than usual sd- standard deviation- the result of uncertainty in cloud cover and showers) Similar to Saturday. Showers / thunderstorms possible anytime and anywhere. High temperature 90.6º sd 2.5º NBM model Blue Bell, PA
Saturday
Sunday