Thursday 17 April is the 125th anniversary of the beginning of American Sovereignty over American Samoa. Part of the celebration includes the Fautasi, a regatta that depends on weather. What tools are available to help forecast in the long-term and in the short-term? The animation above (from the CSPP Geosphere site) shows the Night... Read More
Himawari-9 clean window (Band 13, 10.4 µm) infrared imagery, below, (created using geo2grid software and HSD files from the SSEC Data Center) shows strong convection developing in the Philippine Sea between the Philippines to the southwest, the Ryuku Islands to the west, Japan to the north, and Guam far to the east. The... Read More
Advanced Scatterometry (ASCAT) plots derived from MetopB and MetopC, above, shows a pulse of winds associated with a Gulf of Tehuantepec wind event. Gales are widespread, and winds up to 45 knots are plotted. When Tehuano Gap Winds occur in clear skies (as in this example), the effect on the sea state can... Read More
Light winds and clear skies with High Pressure over the western Great Lakes fostered the development of a warm(ish) patch of water over central Lake Michigan on 6 April 2025. (This has happened before!) Light winds means little vertical mixing in the surface layer of the lake, and solar insolation can heat the water. The... Read More
