Unpacking the Science Behind Hurricane Tracking: A Deep Dive into the Data and Methodology
The National Hurricane Center (NHC) is the primary source of tracking data for hurricanes, providing critical information on the storm’s trajectory, wind speed, and potential impact. The tracking map, which shows probabilities of at least 5 percent, is a vital tool for predicting the storm’s path and intensity. According to the NHC, the forecast is for up to five days, with the time span starting up to three hours before the reported time that the storm reaches its latest location. However, it’s essential to note that wind speed probability data is not available north of 60.25 degrees north latitude.
The intensity chart, which displays the best track and forecast path, is also sourced from the NHC. Additionally, forecast models are provided by the University of Wisconsin-Milwaukee, offering a comprehensive understanding of the storm’s potential intensity and trajectory. These models are crucial in predicting the storm’s impact and enabling authorities to take necessary precautions. As the NHC notes, “the forecast is based on a combination of model outputs and official NHC forecasts.”
Understanding the Wind Arrivals Table and Its Significance
The wind arrivals table, generated from a New York Times analysis of NHC data, provides predicted arrival times of sustained, damaging winds of 58 m.p.h. or more for select cities. The table uses data from the U.S. Census Bureau and Natural Earth to determine geographic locations, while time zones are based on Google. It’s essential to understand that if damaging winds reach a location, there is no more than a 10 percent chance that they will arrive before the “earliest reasonable” time and a 50 percent chance they will arrive before the “most likely” time. This information is critical in enabling residents to prepare and take necessary precautions.
The radar map, which displays radar imagery from the National Oceanic and Atmospheric Administration (NOAA), provides a visual representation of the storm’s trajectory and intensity. The storm surge map, also sourced from the NHC, forecasts potential flooding along the United States Gulf and Atlantic coasts, Puerto Rico, and the U.S. Virgin Islands. However, it’s crucial to note that the actual areas that could become flooded may differ from the areas shown on this map, as the map accounts for tides but not waves and flooding caused by rainfall.
Additional Tools and Resources for Hurricane Tracking
The rip currents map, which displays rip current data from the NHC, highlights the risk of strong currents, even in areas not directly affected by the hurricane. The satellite map, featuring imagery from NOAA and the Japanese Meteorological Agency via the Cooperative Institute for Research in the Atmosphere, provides a comprehensive view of the storm’s trajectory and intensity. The precipitation map, which displays data from the National Weather Service and NOAA, offers a detailed understanding of potential rainfall totals and multi-day forecasts.
Finally, the historical map, which displays storm paths from NOAA’s HURDAT database, provides a valuable resource for understanding the historical context of hurricane landfalls. The map only shows storms with names that formed after the year 2000 and are within 50 miles of the potential landfall location. By analyzing these various tools and resources, residents and authorities can gain a deeper understanding of the storm’s potential impact and take necessary precautions to ensure public safety.
Note: All basemaps are built with Daylight (urban areas) and Natural Earth (roads, labels, terrain), providing a comprehensive and accurate representation of the storm’s trajectory and potential impact. As the NHC notes, “it’s essential to stay informed and follow the latest forecast and warnings from the National Weather Service and local authorities.”
Image Source: www.nytimes.com
