AIR MAIL
Where today’s air came from
The air arriving over Dunedin about 5,000 feet above the ground was over Alabama and Mississippi three days ago, and over the eastern Gulf of Mexico a day ago, about 640 miles back along its path. Near the ground the air came from Alabama and Mississippi; at 10,000 feet, from the western Gulf of Mexico. Air off the water carries moisture, which is why it feels humid. Traced back 72 hours through NOAA’s hourly RAP analyses, nine paths at each of three heights.