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TUESDAY NOVEMBER 14 - RECENT VERY DRY PERIOD
Prior to last Thursday, we hadn't seen any rain - not a drop - for three weeks.
That 21-day stretch goes into the books as the fourth longest dry spell in the
official records, which in Philadelphia go all the way back to 1872.
We didn't come close to the all-time record, which is 29 days. That was set
back in October and November of 1874, beating out the next-longest dry spell by
a whole week. What's interesting about these
long dry spells is that almost all of
them occur this time of year.
In an earlier Franklin Fact, I discussed how autumn tends to be the most tranquil
season weatherwise - on average, our driest season. In 128 years of records, there've
only been six times when we've had a stretch of 20 or more days without a drop of rain.
All of those stretches either started or ended in September or October, and four
of the six fell between October 10 and Thanksgiving.