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In San Francisco, there were 35 inches of precipitation in December 1861–January 1862, and almost 50 for the season. [16] There were four distinct rainy periods: The first occurred on December 9, 1861, the second on December 23–28, the third on January 9–12, and the fourth on January 15–17.
In the Great Flood of 1862, San Francisco receives 24.49 inches (622.0 mm) of rainfall for January, its highest monthly rainfall on record, and the “rain year” total from July 1861 to June of 49.27 inches (1,251.5 mm) is also the highest ever. [1]
A USGS model image shows the enormous atmospheric river that may have been present during the 1861–1862 flood event.. The ARkStorm (for Atmospheric River 1,000) is a hypothetical megastorm, whose proposal is based on repeated historical occurrences of atmospheric rivers and other major rain events first developed and published by the Multi-Hazards Demonstration Project (MHDP) of the United ...
This map shows rainfall from Helene and in the days preceding the storm that combined to create disastrous flooding.
Record-breaking rain that month led to a devastating flood. The rainiest Jan. 23 was in 1996 with 1.57 inches of rain. By contrast, the NWS recorded 0.45 inches of rain Tuesday , and 0 inches ...
Download QR code; Print/export Download as PDF; ... Map of Minnesota showing the snowfall totals from the 1991 Halloween ... Most rain in 24 hours [6] 15.10 inches ...
Here are rainfall amounts, in inches, from the last 24 hours (unless otherwise noted) by locality, according to National Weather Service St. Louis: Illinois locations Belleville: 6.23, 6.33
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