With a strong midlatitude cyclone centered over Iowa on 31 March 2023, the Storm Prediction Center (SPC) outlined 2 areas of relatively rare High Risk for severe weather — and GOES-16 (GOES-East) Total Precipitable Water along with the Lifted Index (LI) and Convective Available Potential Energy (CAPE) Derived Stability Indices (above) showed that a corridor of moisture and instability... Read More

The NOAA/CIMSS ProbSevere LightningCast model uses GOES-R ABI reflectances and brightness temperatures along with artificial intelligence methods to predict next-hour lightning anywhere in the GOES-R field of view. It is particularly adept at nowcasting lightning initiation. A long, potent cold front spawned a number of storms from Iowa to Texas today... Read More

The animation above, created at the CSPP Geosphere site (direct link to the animation), shows showers dissipating over and south of the Samoan island chain shortly after sunset, and then redeveloping to the north of the island chain. The redevelopment in the RGB imagery followed the usual color change associated with developing convection: faint pink/red... Read More

Much of the mid-Mississippi River valley was placed under a Moderate Risk of severe weather by the Storm Prediction Center on 31 March 2023. Day Night Band imagery from NOAA-20 (mislabeled as Suomi NPP), above, shows two bore-like features with very different orientations (there is also a notable lightning feature over eastern South Dakota!). The feature over Iowa is... Read More