The overall theme of the September outlook
is the same, but several changes were made to the forecast for the upcoming month from NOAA's Climate Prediction Center
. The likelihood of warmer than normal temperatures have been expanded across most of the nation, especially in the Northeast and Southwest. The previous forecast had the focus for above average temperatures in the Northeast and Northwest.
A larger area of wetter than normal weather has been added from the Four Corners through the Plains to the western Great Lakes. Another area has been added along the Gulf of Mexico coastline, where drier than normal conditions had been previously predicted. Above average precipitation is still predicted for the Middle Atlantic and Southeast. Below normal precipitation is still expected in the Northwest.
[The previously issued September outlook, tweeted by the Climate Prediction Center on August 16th]
The Climate Prediction Center states
that the updates were adjust to reflect changes in short and long term forecast models. Other factors that contributed to the revised outlooks included ocean surface temperatures and dry soil moisture conditions in some areas. El Nino is expected to develop later this year, as shown in the autumn outlook
released earlier in the month, but it is not a factor at this time.
: Meteorologist Mace Michaels