There was a conditional outlook for severe storms in Oklahoma on April 19th, owing to uncertainty in the forcing for ascent and a stout warm-sector cap. Well, the cap broke, and mayhem ensued in central Oklahoma. A break in the cirrus deck in southwest Oklahoma likely contributed to surface heating... Read More

There are more than 7300 satellites in orbit above the Earth, and the mp4 animation above (from Rick Kohrs, SSEC; click here for an animated gif) shows their locations during about 3 hours on 6 April 2023. The points were computed using TLE data from https://celestrak.org. Some satellites are in geostationary orbit along the equator... Read More

Severe weather on 15 April and 19 April affords another opportunity to compare Significant Tornado Parameter predictions from a 4-km WRF simulation that includes information from Polar Hyperspectral Soundings and a 3-km HRRR simulation that does not. Consider the example, above, at 2200 and 2300 UTC on 15 April and 0000 and... Read More

Oklahoma City and surrounding areas were struck with severe weather last night, the night of Wednesday 2023-04-19. Nine tornadoes touched down in Oklahoma, making a total of 15 tornadoes from the storm system. Tornadoes were also reported in Nebraska and Iowa. This severe weather took the lives of three Oklahomans.... Read More