National Weather Service United States Department of Commerce

Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Recently, we recorded an upper-air launch at our office. Much of the edited video is from a first person perspective, giving unique insight into how our meteorologists launch the weather balloon. It was breezy the day the radiosonde was launched, adding some excitement to the mix.

We normally launch the balloon twice a day. The sounding, as it is called, is released around 4am/pm or 5am/pm depending on whether daylight savings time is in effect or not.

Example output from our most recent sounding:

Most recent sounding from KRAP Upper-Air site