Tropical Storm Don

Tropical Storm Don was the fourth named storm of the 2017 hurricane season, forming with a max sustained wind of 40 mph on the evening of July 17 2017, after a reconnaissance aircraft flew in and found the winds to be sustained at 40 mph and a central pressure of 1009. The storm strengthened 12 hours later to its peak before falling apart 18 hours after that.

None known.

• ECMWF - Suppressed the system too much, never developing it into anything.

• CMC - Saw the storm, but not before the GFS-PARA. Developed it slightly, but not much.

• GFS - Saw the storm, but made it way too strong.

• GFS-PARA - Correct on intensity, though late on finding it.

• NAVGEM - Weak system the whole time, but took the storm south of the Islands instead of north.

• UKMET - N/A

• HWRF - Too strong.

• HMON-PARA - Too strong as well.

End Result: Though the GFS found Don first with the CMC trailing behind it, it failed in overblowing intensity, while the ECMWF suppressed the storm too much. The HMON, HWRF and its new PARA did as well. However, the GFS-PARA kept intensity low enough, but high enough to take the win.

Tropical Storm Don

N/A

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