Tuesday September 10th is the height of hurricane season.
It is the midpoint between the beginning and end of the season for the Atlantic Basin.
In the Atlantic Basin, it has been a quiet year.
Since June 1st (the start of the Atlantic Basin hurricane season) there have been 8 named storms.
None of these storms strengthened into hurricanes.
The forecast released by the National Hurricane Center (NHC) in May of this year was for 13 to 20 storms with 7 to 11 becoming hurricanes.
At the beginning of the summer, the NHC was forecasting an above average season and there is still plenty of time for more storms to form.
The hurricane season runs through November 30th in the Atlantic Basin.
But with such a quiet start to the year, the NHC did trend the forecast numbers downward with an August forecast update.
The East Pacific hurricane season runs May 15th through November 30th.
So far this year there have been 12 named storms with six of these becoming hurricanes.
The NHC forecast was for 11 to 16 named storms with 5 to 8 of those strengthening into hurricanes.
So far the forecast has panned out for the Pacific hurricane season.
Plus there is still time to push those numbers up.
It is the East Pacific hurricane season that most influences weather here in Arizona.
While the storms themselves do not generally move far enough inland to cause problems in the Southwest, the moisture from the storms can surge into the area.
When this happens soupy, tropical air takes over the state with heavy tropical downpours flooding washes and roads across widespread areas.
That is exactly what happened the first full weekend on September.
Tropical Storm Lorena hit the coast of the Baja Peninsula on September 6th and 7th.
Lorena then fell apart but her leftover moisture was drawn northward.
That led to gray skies and showery days for southern Arizona.