Iceland enjoyed a remarkable string of clement weather in mid-May. The true-color animation below, taken from the NASA Worldview site, shows almost a fortnight of clear skies!VIIRS gives a high-resolution view of the surface and cloud features as shown above. JPSS satellites carry sounder instruments used to create NUCAPS data; NUCAPS profiles... Read More
A shortwave impulse spawned numerous supercell thunderstorms in a highly unstable and well-sheared environment in the Southeast U.S. ProbSevere v3 readily tracked numerous severe and tornadic storms across the region.One storm in particular produced tornadoes in Madison, Alabama, and prompted a tornado emergency warning. In this example, the ProbTor v3 was much higher... Read More
A negatively tilted shortwave trough and associated dynamical response created a rapidly deepening surface low in the Dakotas on May 15. These features worked together to bring high theta-E air from the southern U.S. up into Minnesota and Wisconsin, creating ample instability in the region. A strong mid-level jet streak... Read More
From the mailbag early on Friday 9 May 2025 The contrail show over the Lake MI region is pretty crazy this morning with the rotated flow aloft. Wondering if these are originating from a bunch of intercontinental flights that touch high latitudes in "great circle" fashion.What did the mid-level water... Read More
