Such methodology was applicable to all counties in the contiguous United States. This provided the average, which was subsequently used to calculate the standard deviation for each county-month pairing. We reconstructed these averages to verify that we were using the proper methodology and then applied that methodology to the county-level monthly average dataset. These averages are specific to each county and month. NCEI references these averages as varieties of climate normals, we will reference these values as average. The NClimDiv database hosts multiple types of historical averages: 30-year averages starting from 1901, 1895-2010 average, and 20th century average, the latter is being used in this experience. Although presented side-by-side with the county-level averages, the Hawaiian data are station-specific averages and should not be considered representative of county-level climate. To provide a comprehensive account of climate across the United States, we supplemented the dataset with individual station data for each county in Hawaii. Those data exclude Hawaii because NCEI indicated county-level averages could not be constructed with the limited data and highly variable climate patterns of the Hawaiian Islands. We leveraged the county-level temperature and precipitation averages to showcase climatic anomalies in comparison to the 20th century average. Its NOAA Monthly US Climate Divisional Database (NClimDiv) 1 provides data for temperature, precipitation, drought indices, and heating and cooling degree days for US climate divisions, states, multi-state regions, and the nation from 1895 to the present. The National Centers for Environmental Information (NCEI), is a sub-bureau of the National Oceanic and Atmospheric Administration (NOAA). The combined paths of the three tornadoes totaled 125 miles.Data Methodology Temperature and Precipitation Datasets Dataset Description It was on the ground for 37 miles with winds that reached 155 mph and was almost a mile wide. The third tornado, an EF-3 which hit Amory, first touched down in Chickasaw County and moved across Monroe County, killing two people, before pushing into Itawamba County. Three deaths are being blamed on that storm which was on the ground for almost 29 miles. The National Weather Service says the tornado was up to three-quarters of a mile wide, had top winds of 170 miles an hour and was on the ground for about 59 miles– beginning in Issaquena County and ending in Holmes County.Īnother tornado that’s being rated an EF-3 with winds up to 155 mph developed in Carroll County and tracked across Montgomery County. But the damage pales in comparison to the utter devastation caused by the EF-4 tornado in Rolling Fork and Silver City where 16 people (updated figure) were killed Friday night. Although the stormy weather affected recovery efforts in some of the hardest-hit areas, the worst of Sunday’s storms were near I-20– in areas that escaped the tornado damage Friday night.Ī fire station lost its roof in Bolton, a Sonic Drive-in was damaged in Clinton and lots of trees were blown down, some of them hitting homes. Winds up to 70 miles an hour, heavy rain and hail the size of baseballs tore through Mississippi Sunday, less than 48 hours after three tornadoes devastated parts of Sharkey, Humphreys, Carroll and Monroe counties.
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