It was supposed to be a dry frontal passage this morning, but that hasn’t panned out. The models show as little as a 4% chance of showers this morning, but the short range models (GFS-LAMP) have increased the chances s bit. Nonetheless, radar shows that an area of fast-moving showers is passing through.
NEXRAD Radar PHL 9:25 AM today
Interestingly, the NAM model was updated and enhanced this past Tuesday, but I see little improvement in the precipitation forecasts since then.
For the balance of the day, broken clouds, showers early morning , then clearing in the mid-afternoon.
In some areas today, there was a large high cirrus cloud cover, even an altocumulus congestus layer which kept temperatures down. There were more high level clouds than I had expected.
A weak frontal boundary will move through Sunday morning with cloudy skies early. The models keep us dry. Skies clear during the day as a dry northerly flow develops.
So for Sunday, clouds in the early morning with blue skies and billowy fair weather clouds in the afternoon.
A cold upper aircyclonic flow will allow mostly sunny skies for Saturday, with perhaps some fair weather cumulus developing in the afternoon. A weak upper air disturbance and front will rotate through Sunday morning and will be offshore Sunday evening.
Sat 8/16: Sunny and beautiful. High 83.
Sun 8/17: Cloudy, in the early morning with a chance of a shower. Skies clear during the afternoon. High 84.
