It was hot, and now it's cool. But you just have to love what's going on in the weather department--an unusual scenario, and indeed, yet another backdoor cold front.

While hot and humid air built up over the Ohio Valley and Mid-Atlantic states, yet another high pressure bubble developed over southeast Canada. This nudged maritime air southwest, first into Eastern New England, and then finally all the way west through the city into central New Jersey. On Tuesday, we saw highs in the low 90s while Boston shivered in the 50s; on Wednesday, east winds knocked temperatures down here while central New Jersey west of around Morristown stayed in the high 80s.

Now an upper air disturbance is bringing showers to the area and it will be some time before it all dries out with sunny, mild weather.

The particularly neat aspect of this synoptic configuration was the backdoor cold front moving west while a regular cold front moved east. Once they collided over eastern Pennsylvania, the resulting occluded front stalled and now has only very slowly moved east to Long Island.

The computer models, of course, have been hopeless. They just can't digest anomalous features like this, especially so late in the spring. While this is not a signal for any long term pattern this summer, it's incredible how persistent the onshore wind threat has been.