A surface outflow boundary (resulting from a dissipating mesoscale convective system over southern Texas) created an undular bore that propagated southward and southwestward during the night-time hours on 07 May 2012. AWIPS comparisons of 1-km resolution Suomi NPP VIIRS 0.7 µm “Day/Night Band” images with the corresponding VIIRS 11.45 µm... Read More

Tornadoes are relatively rare in Japan, and the majority of them occur in association with tropical cyclones — but a tornado struck the city of Tsukuba, Japan on 06 May 2012, and was responsible for one fatality, over 40 injuries, and damage (rated F2 to F3) to nearly 500 homes... Read More

AWIPS images of 4-km resolution GOES-13 10.7 µm IR channel data (above; click image to play animation) showed the development of large thunderstorms over the far eastern Gulf of Mexico during the pre-dawn hours on 03 May 2012.Better detail of the cold convective cloud tops could be seen in a series of... Read More

Surface outflow from dissipating convection over southern Manitoba, Canada during the pre-dawn hours on 02 May 2012 created an undular bore, which then propagated southeastward across northeastern North Dakota and northwestern Minnesota. AWIPS images of 4-km resolution GOES-13 10.7 µm IR channel data... Read More