GFS sea-level pressure valid 12z 2/2
Notes:
GFS forecast sea-level pressure forecasts are shown on this slide, all valid at 12. The oldest forecast (a 60 hour forecast) is shown on the bottom right, with the newest (a 12 hour forecast) is shown on the upper left. Similar to the SREF, there was a slightly northward trend in the forecast surface low position through the period.
Slide 5