Sources and references
Tracking map Tracking data comes from the National Hurricane Center and the Joint Typhoon Warning Center. The map shows probabilities of 5 percent or more. The forecast is valid for up to five days, with that period beginning up to three hours before the reported time the storm reaches its last location. Wind speed probability data is not available north of 60.25 degrees north latitude.
Wind arrival table Arrival times are derived from a New York Times analysis of National Hurricane Center data. Geographic locations are based on data from the U.S. Census Bureau and Natural Earth. Time zones are based on Google. The table shows the predicted arrival times of sustained, destructive winds of 58 mph or greater for selected cities that have a probability of those winds reaching them. When destructive winds reach a location, they have no more than a 10 percent chance of arriving before the “earliest reasonable” time and a 50 percent chance of arriving before the “most likely” time.
Radar map The radar images come from the National Oceanic and Atmospheric Administration through Iowa State University. These mosaics are created by combining individual radar stations that make up the NEXRAD network.
Storm surge map Storm surge data comes from the National Hurricane Center. Forecasts include only the Gulf and Atlantic coasts of the United States, Puerto Rico, and the U.S. Virgin Islands. Actual areas that may be inundated may vary from those shown on this map. This map takes into account tides, but not waves or flooding caused by rain. The map also includes tidal areas that are regularly inundated during typical high tides.
Satellite map Images are from the National Oceanic and Atmospheric Administration and the Japanese Meteorological Agency via the Cooperative Institute for Research in the Atmosphere.
precipitation Map Data for multi-day forecasts or observed precipitation amounts come from the National Weather Service. The 1-day forecast comes from the National Oceanic and Atmospheric Administration.