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National Operational Hydrologic
Remote Sensing Center

Airborne Snow Survey Program

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Operational Snow Survey Program

The National Operational Hydrologic Remote Sensing Center (NOHRSC) has developed, and currently maintains, an operational Airborne Gamma Radiation Snow Survey Program to make airborne Snow Water Equivalent (SWE) and soil moisture measurements. Airborne SWE measurements are used by NWS Weather Forecast Offices (WFO) and NWS River Forecast Centers (RFC) when issuing river and flood forecasts, water supply forecasts, and spring flood outlooks.

2020 - 2021 Snow Season Surveys

Name Dates Surveyed States and Provinces
North Central River Basin
January 13, 2021 ND, WI, MN
Northeast River Basin
February 11, 2021 NY
NERFC, MARFC, and OHRFC
February 14, 2021 NY, CT, NH, OH, PA, MA
NERFC
February 18, 2021 ME
NCRFC
February 25, 2021 IL, IN, WI, IA
MBRFC
March 1, 2021 NE
Lake Superior
March 2, 2021 MI, MN, WI
Eastern Region
March 2, 2021 WV, PA, OH, IL.IN, OHI
NCRFC
March 8, 2021 MN, MI, MI
NCRFC
March 12, 2021 MN, MI, MI
NERFC
March 22, 2021 ME, NH, VY, NY
CNRFC
March 29, 2021 CA
APRFC
April 5, 2021 AK, YT



NOHRSC
Mission Statement  |  Contact


National Weather Service
National Operational Hydrologic Remote Sensing Center
Office of Water Prediction
1735 Lake Drive W.
Chanhassen, MN 55317

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Page last modified: Sep 19, 2017
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