NWS Duluth Situational Awareness

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Request for Comments: The National Weather Service is planning to modernize its Cooperative Observer Program (COOP) network by harnessing new technology, optimizing observation sites and leveraging high-quality commercial data.
NOAA Weather Radio User Survey (Open until May 28, 2026)
Skywarn Spotter Training - Miss our in-person training this spring? You can still watch the virtual recorded training anytime!

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Observed Temperature Dates

Date of Most Recent <= 28 F Freeze	# Days of Last 14 With <= 28 Freeze	Date of Most Recent <= 32 Freeze

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Observed Dates

Growing/Stress Degree Days

Sping Climo

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Growing and Stress Degree Days

GDD base 45 Since Last <=28 Freeze	GDD Base 50 Since Last <= 28 Freeze	GDD Base 54 Since Last <= 28 Freeze

GDD base 45 Since Last <=32 Freeze	GDD Base 50 Since Last <= 32 Freeze	GDD Base 54 Since Last <= 32 Freeze

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Observed Dates

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Spring Climatology

Median Last <=28 Freeze	Median Last <=32 Freeze	Last <=32 Freeze

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Observed Dates

Growing/Stress Degree Days

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Fall Climatology

Median First <=28 Freeze	Median First <=32 Freeze	Earliest <=32 Freeze

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Observed Dates

Growing/Stress Degree Days

Sping Climo

Fall Climo

Snow Climo

Snow Climatology

Median First Measurable Snowfall	Earliest First Measurable Snowfall	Latest First Measurable Snowfall

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Observed Dates

Growing/Stress Degree Days

Sping Climo

Fall Climo

Snow Climo

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