1-minute Mesoscale Domain Sector GOES-19 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) showed thunderstorms that produced giant hail (as large as 5.00 inches in diameter) and damaging wind gusts (as high as 106 mph) across the Texas Panhandle and North Texas (SPC Storm Reports) on 29 April 2025. The Infrared images revealed pulses of... Read More

Due to a lack of radar coverage over American Samoa, WSO Pago Pago requested 1-minute Mesoscale Domain Sector coverage over the islands during a period of heavy rainfall risk. GOES-18 (GOES-West) Clean Infrared Window (10.3 µm) images (above) displayed showers and thunderstorms that moved across the American Samoa island of Tutuila (where Pago Pago... Read More

Blizzards, dust storms, fires, floods, thunderstorms and tornadoes were the result of very strong back-to-back negatively tilted shortwave troughs through the eastern half of the U.S. From Texas to Wisconsin, New York to Florida, severe wind gusts, large hail, and deadly tornadoes were recorded. The hardest hit states during the... Read More

I awoke to thunderstorms in Madison, Wisconsin this morning. The elevated storms were riding a warm front at 850 mb, fueled by moderate-to-strong warm-air advection.This was a good opportunity to look at ProbSevere LightningCast version 2, which includes Multi-Radar Multi-Sensor (MRMS) Reflectivity -10C as a predictor, along with several visible, near-infrared,... Read More