Infrared imagery over the Hawai’ian Islands on 25/26 October, below, shows convective development over Maui and Oahu. This was also a region of strong vertical wind shear, as shown below, as upper level cloud features were moving southeastward, low level clouds were moving to the west).GREMLIN is a machine-learning tool... Read More

MIMIC TPW fields for the first half of 22 October (at which point the data feed from NOAA/NESDIS was interrupted) shows the Samoan Islands within an isolated region of relatively dry air with moisture moving in from the east. GFS fields showing the Galvez Davison Index (GDI) that is sometimes... Read More

VIIRS Day Night Band visible imagery (at 0.7 µm) on 23 October, above, shows a dark patch over the Mid-Atlantic right to the east of New Jersey and the Delmarva peninsula. Chesapeake Bay waters are also much darker than most of the adjacent Atlantic Ocean. Dark patches such as these... Read More

From a Slack Channel (because email is so 2012!) comes a link to RealEarth (imagery shown below) that shows Advanced Clear-Sky Processor for Oceans (ACSPO) estimates of SSTs. The sinuous bendings of the Gulf Stream include a pronounced warm eddy with a ragged thermal edge. (The exercise in determining whether this is inertial instability in this anticyclonic gyre... Read More