EUMETSAT Meteosat-9 High Resolution Visible (HRV) images (above) showed the classic signature of a “warm seclusion“: a nearly cloud free eye-like structure at the center of the circulation. Surface station wind barbs (in knots) are also plotted in cyan on the images.A similar eye-like appearance was seen on Meteosat-9 water vapor... Read More

 MTSAT-1R 10.8 µm IR channel images from the CIMSS Tropical Cyclones site (above) showed Category 1 Tropical Storm Thane (06B) in the Bay of Bengal, moving toward the east coast of India on 28 December 2011.Contours of 850-200 hPa Read More

Strong winds aloft associated with a cyclonically-curved jet streak over the Northern Rocky Mountains were responsible for a number of mountain waves and lee “banner clouds” over parts of Wyoming and Montana on 25 December – 26 December 2011. A side-by-side comparison of GOES-15 (GOES-West) and GOES-13 (GOES-East) 6.5 µm water vapor... Read More

 On 25 December 2011 a new all-time record high temperature of +9.9° F (-12.3° C) was set at the Amundsen-Scott South Pole Station — the previous all-time record high was +7.5° F (-13.6° C) on 27 December 1978. A NOAA-18 AVHRR false color Red/Green/Blue... Read More