![]() or 2.54 mm), and (c) measurable snow depth (SNWD = 1 in. or 0.254 mm), (b) measurable snowfall (SNOW ≥ 0.1 in. Maps of the 1981–2010 average number of January days with (a) measurable precipitation (PRCP = 0.01 in. Differences are shown in inches, and positive differences indicate that the average is greater than the median. Map of differences between the climatological average and median monthly precipitation totals for January during 1981–2010. 3, but for July average precipitation totals. Maps of 1981–2010 January average totals of (a) precipitation (in.) and (b) snowfall (in.) across the contiguous 48 states, Alaska, Hawaii, Puerto Rico, the Virgin Islands, and various islands in the central and western Pacific (including American Samoa, Guam, Johnston Atoll, Marshall Islands, Northern Mariana Islands, Federated States of Micronesia, Midway Islands, Palau, and Wake Island).Īs in Fig. For details on these methods, see section 3a. The symbols identify the locations of the stations, and their shapes indicate how the average monthly total was computed: from a complete record of 30 observed July totals between 19 (circles), from a combination of observed and estimated July totals (squares), or using the quasi-normals approach (triangles). Numbers indicate the average precipitation totals in inches. Climate Normals.Īverage July precipitation totals during 1981–2010 for stations with varying degrees of data completeness in two distinct regions: (a) Champaign 9 SW (GHCN-Daily station USW00054808 40.0528°N, 88.3728°W) and its 10 nearest neighbors with average monthly PRCP totals and (b) all stations within 100 km of Zuni (USW00093044 35.0706°N, 108.8389°W). Locations of (a) the 9307 stations with average monthly precipitation totals and (b) the 5279 stations with the full range of precipitation, snowfall, and snow-depth statistics in the 1981–2010 U.S.
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