<P> Hurricanes are another natural disaster found in the US, which can hit anywhere along the Gulf Coast or the Atlantic Coast as well as Hawaii in the Pacific Ocean . Particularly at risk are the central and southern Texas coasts, the area from southeastern Louisiana east to the Florida Panhandle, peninsular Florida, and the Outer Banks of North Carolina, although any portion of the coast could be struck . </P> <P> Hurricane season runs from June 1 to November 30, with a peak from mid-August through early October . Some of the more devastating hurricanes have included the Galveston Hurricane of 1900, Hurricane Andrew in 1992, Hurricane Katrina in 2005, and Hurricane Harvey in 2017 . </P> <P> Hurricanes (known as cyclones in the Pacific Ocean) fail to landfall on the Pacific Coast of the United States due to water temperatures being too cool to sustain them . However, the remnants of tropical cyclones from the Eastern Pacific occasionally impact the western United States, bringing moderate to heavy rainfall . </P> <P> Occasional severe flooding is experienced . There was the Great Mississippi Flood of 1927, the Great Flood of 1993, and widespread flooding and mudslides caused by the 1982--83 El Niño event in the western United States . Localized flooding can, however, occur anywhere, and mudslides from heavy rain can cause problems in any mountainous area, particularly the Southwest . Large stretches of desert shrub in the west can fuel the spread of wildfires . The narrow canyons of many mountain areas in the west and severe thunderstorm activity during the summer lead to sometimes devastating flash floods as well, while nor'easter snowstorms can bring activity to a halt throughout the Northeast (although heavy snowstorms can occur almost anywhere). </P>

What major physical feature divides the u.s half