Tropical Storm Debby formed in the eastern Gulf of Mexico on 23 June 2012 — Debby was the earliest “D”-named (4th storm of the season) Atlantic Basin tropical cyclone on record. GOES-13 10.7 µm IR channel... Read More

According to the Alaska Volcano Observatory, the Mount Cleveland volcano erupted around 22:05 UTC on 19 June 2012 (volcanic activity notice). A comparison of AWIPS images of the MODIS volcanic ash mass loading, ash height, and ash effective radius products (above) showed the volcanic ash plume about 1 hour and 40 minutes later (23:44 UTC). The... Read More

A radar reflectivity composite (above) showed a large Mesoscale Convective System (MCS) that was moving across parts of Minnesota and Wisconsin on 14 June 2012, producing heavy rainfall (2.99 inches at Zumbrota in southeastern Minnesota) and some hail (SPC... Read More

AWIPS images of Suomi NPP VIIRS 0.64 µm visible channel and 1.61 µm near-IR channel data (above) showed that there was a wide ice-free passage leading from the Bering Sea northward and northeastward through the Chukchi Sea toward Barrow, Alaska (station identifier PABR) on 14 June 2012. On the visible... Read More