Tropical Storm Simon says, 'US Southwest is an 'arm's reach'

Infrared satellite imagery from NASA's Aqua satellite shows what looks like an arm from Tropical Storm Simon's northern quadrant, reaching over Baja California to mainland Mexico. Forecasters at the National Hurricane Center ...

NASA sees System 98W become Tropical Depression Kammuri

Strong thunderstorms around the center of circulation in tropical low pressure System 98W were seen on infrared satellite imagery and were a clue to forecasters that the storm was intensifying. Early on Sept. 24, the storm ...

NASA sees Tropical Depression Polo winding down

Infrared satellite imagery from NASA's Aqua satellite showed only a swirl of low-level clouds some deep clouds around Polo's weakening center on Sept. 22 as the storm weakened to a depression.

NASA sees Tropical Storm Polo intensifying

Tropical storm warnings now issued for a portion of the Southwestern coast of Mexico as Polo continues to strengthen. Infrared imagery from NASA's Aqua satellite showed powerful thunderstorms around the center of the storm.

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