Hurricane Helene spent time percolating in the northwestern Caribbean over the past week. The animation above show true-color imagery from the CSPP Geosphere site at 1-day intervals from 13 to 24 September. Convection over the southern Gulf of Mexico on 18-20 September moved northward and expanded greatly before being designated... Read More

LightningCast probabilities (from this website) over the Central Dense Overcast of Tropical Cyclone Bebinca in the western Pacific to the northwest of Guam, above, show increasing values (the island of Guam is center bottom of the imagery above): magenta are values of 75%. Lightning activity within the central core is often a... Read More

Francine became the 4th Hurricane of the Atlantic Tropical Cyclone season at 0000 UTC on 11 September (NHC advisory) 2024. The animation of True-Color imagery, above, from the CSPP Geosphere site, shows sporadic vigorous convection near the storm center in the hours before the hurricane designation. The Gulf of Mexico can be monitored... Read More

VIIRS Day Night Band imagery from the Direct Broadcast site in Honolulu, above, shows Hurricane Hone as it passes south of South Point on the Big Island of Hawai’i on 25 August 2024. NOAA-21, Suomoi-NPP and NOAA-20 viewed the storm at 1130, 1154 and 1218 UTC, respectively. Data were processed at the antenna with... Read More