Day 20 of the Perdigao IOP. Today was another pleasant day, with mostly clear skies and warm temperatures. Surface winds were weak, while winds aloft were veering, from the NNW to SSW.
Four sondes were launched today, at 00 UTC, 06 UTC, 12 UTC & 18 UTC, with no issues. Supersonde schedule is being discussed for Sunday or Monday, with decision to be made after weather briefing on Sunday.