The Whittemore plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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71° on Nov. 11, 2022, the hottest reading for this week of the year since 1890. Next is 69° in 1990.
Whittemore’s center stands about 780 ft above sea level. Within three miles the land runs from 660 ft to 830 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Michigan Formation (shale), from the Carboniferous, 324 to 359 million years old.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 54×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale. Age: Carboniferous, 324 to 359 million years old. About 24 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Whittemore reaches Lake Huron by way of Mongo Creek and the Au Gres: about 20 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Whittemore; river miles along the main stem, rounded.
Whittemore has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 13° in January. A normal year brings about 49 inches of snow; with the rain, that comes to about 32 inches of water.
On November 14 Whittemore normally reaches 46° and falls to 30°. The record high is 65°, in 1994; the record low 9°, in 1908. The most rain on this date, 1.28 in, fell in 1957.
Normals 1991–2020 and records since 1890 at East Tawas, 15 miles east-northeast, 190 ft lower. NOAA, through RCC-ACIS.
