1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) include an overlay of GLM Flash Extent Density — which showed the severe thunderstorm that produced an EF3-rated tornado in Virginia Beach, Virginia on 30 April 2023. With that particular storm a lightning jump began around 2135 UTC and peaked at 2142 UTC, and the coldest cloud-top infrared... Read More

Overlapping 1-minute Mesoscale Domain Sectors provided GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images at 30-second intervals (above), which included plots of time-matched (+/- 3 minutes) SPC Storm Reports — showing thunderstorms that produced a few tornadoes, hail as large as 1.75 inches in diameter and wind gusts to 76 mph across... Read More

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) include plots of time-matched (+/- 3 minutes) SPC Storm Reports — which showed thunderstorms that produced hail as large as 4.50 inches in diameter and wind gusts to 63 mph across North Texas on 26 April 2023.  Cloud-top infrared brightness temperatures... 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