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 >

The Pacific Streamline Analysis is a Forecast Chart produced by the National Weather Service located in Honolulu, Hawaii.

A streamline analysis is a depiction of the surface wind field. Streamlines are drawn parallel to the wind. Surface meteorological features are then analyzed and drawn on to the chart using weather symbols. For more information on what these weather symbols represent, see the Symbols & Test Chart below.

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