Sunday, December 23, 2012

Weather Rewind: December 16-22, 2012

Temperatures averaged nine degrees above normal last week in Philadelphia, buoyed by the continued mild regime in the East that has dominated this month's weather so far.  Saturday's high of 42 was the coldest we've seen this month in Philadelphia -- but given clouds in the region, the daily low of 35 was enough to push keep temperatures above average for the day as well.  Two storm systems, both mild, brought rain to the region as we were soaked with two inches of rain in the city, more to the city's north and northwest where closer to three inches fell between the two storm systems this past week.

The second storm system, on Thursday night into Friday, brought high winds with it to the region. The combination of those strong south winds pushing water up the Delaware plus heavy rains caused the fourth highest tidal flood mark along the Delaware River since records were first kept in 1922.

Nationally, it's continued to be a November in December type of month -- temperatures for much of the country have been above average, with significant warmth for the eastern half of the country on the whole.  While the pattern has changed to a more typical December setup, these huge positive anomalies in temperature will hold for the month, leaving some places with one of their warmest Decembers on record.