Signs of the Autumn season show up nicely on MODIS true color imagery (above): snow cover is gradually becoming established in parts of the northern and central Rocky Mountains, as well as the northern Black Hills of South Dakota (close-up MODIS images centered at Read More
A 200-image animation (29 MB QuickTime movie, above) of Super Rapid Scan Operations (SRSO) GOES-10 visible channel imagery shows the development of supercell thunderstorms at 1-minute intervals across northern Arkansas and southern Missouri between 17:00 and 22:07 UTC (12:00 Noon and 5:07 PM local time) on Read More
A deepening mid-latitude cyclone (located over southeastern Colorado / southwestern Kansas at 12 UTC) began to transition from the mature stage to the occluded stage during the morning hours on 21 September. The tell-tale occluding cyclone signature... Read More
Cold air advection in the wake of a secondary cold front helped to generate some well-defined lake effect rain bands over Lake Huron on 20 September (QuickTime animation of GOES-12 visible images). The cold air mass allowed Read More
