Hurricane Juan - September 28-29, 2003
A large tropical
wave with a broad area of low pressure moved off the west coast of
September 14. Moving westward, the shower activity increased
significantly on the 20th due to
interaction with an upper level cyclone which was carved out by the
outflow of Hurricane Isabel.
A mid-level circulation formed within the convection, which moved
northwest into a decaying
frontal zone. A low-level circulation formed along the old
frontal zone on the 23rd. It slowly
transitioned into a tropical depression the following morning, with
tropical storm status late on
the 24th. Hurricane intensity was reached early on the 26th.
The cyclone began to move north-northwest around a high latitude
blocking ridge. Juan became
a category 2 hurricane on the 27th. Accelerating northward, Juan
crossed Nova Scotia as a
hurricane, becoming absorbed by a large extratropical cyclone in the
Gulf of St. Lawrence.
Below is the track of Juan, supplied by the National Hurricane Center.
The graphics below show the storm total rainfall for Juan, which used rainfall data
provided by Chris Fogarty of the Canadian Hurricane Center, part of Environment Canada.