A large oak tree came crashing down this morning along American River Drive, blocking the street and onto the roof of a house.
The towering oak split down the middle after several days of hot weather. Work crews worked through the morning to clear thick branches from the roadway at American River Drive and Callnon Court near Watt Avenue.
What caused the tree to fall is not clear.
However, the tree came down after several days of hot weather. During hot days. tree limbs and trunks are susceptible to a phenomenon called "summer branch drop." Summer branch drop mainly affects older trees. Some arborists explain it this way:
During a stretch of hot days, water is sent up a tree to cool off its limbs. The branches become too heavy with water and can suddenly and unpredictably break.
That's what city officials said they thought happened on June 9, 2001 when a 35-foot branch snapped in Fremont Park at 16th and P streets and crashed down on an 11-month-old boy in a stroller, killing the baby.
Wednesday's high temperature in the Sacramento area was expected to hit 105.
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