Severe thunderstorms are forecast to develop from the mid-Mississippi River Valley south into the ArkLaTex on Tuesday. These storms can bring large hail, damaging winds, a few tornadoes and flash flooding. Residents should heed any warnings issued and follow local forecast office social media pages for updates. Read More >
Weather Spotters
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Storm spotters are volunteers who help their community and NOAA's National Weather Service by keeping an "eye on the sky" during severe weather. Our spotters contact the NWS via phone, amateur radio, or the internet, keeping our forecast staff updated with the latest weather information from their location. Anyone over the age of 15 years old can become a spotter. If you would like to become a severe weather spotter for northeast or north-central Wisconsin, you must either attend training presented by NWS Green Bay or take the three online courses in the "Training Online" section below. To remain a spotter in good standing, you must either attend a refresher course or retake the online courses (see "Training Online" section below) every 2-4 years. For additional information concerning the spotter program, click here for answers to Storm Spotter Frequently Asked Questions. |
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Frequently Requested Severe Weather Products and Pages
Hazardous Weather Outlook -- NWS Green Bay Forecast Area
Severe Thunderstorm/Tornado Watches -- NWS Green Bay Forecast Area
Severe Weather Watches -- For Wisconsin
Our Severe Weather Forecast Page -- Forecasts, watches, and warnings
Submit a Storm Report to NWS Green Bay
NWS Storm Prediction Center
Severe Thunderstorm Risk Categories Explained -- Image
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Amateur Radio Operations at NWS Green Bay - WX9GRB
Amateur radio spotters provide valuable weather reports to the NWS Green Bay office during severe weather. Several volunteer net controllers, led by Christian Reynolds (KC0ARF), staff the amateur radio desk at the NWS Green Bay office--WX9GRB (above, left)--and stay in contact with spotters across northeast and north-central Wisconsin. The 80 ft tower (above, right) is home to the antennas.
Skywarn Recognition Day
WFO Green Bay once again participated in the annual event, celebrating the contributions that volunteer SKYWARN radio operators make to the National Weather Service. During the day, SKYWARN operators visit NWS offices and contact other radio operators across the world. Click here for more information about the event.
Spotter Brochures & Instructions
Tri-Fold Spotter Brochure-- .pdf format
Measuring Snowfall for NWS Green Bay -- .pdf format
Weather Spotter's Field Guide -- .pdf format
Spotter Training
The online classes below can be taken in lieu of attending in-person classes (all should be completed together). Upon completing the online courses, email the Certificates of Completion to jeff.last@noaa.gov -- You will then receive additional information on becoming a spotter for northeast Wisconsin.
| Skywarn Spotter Training -- Two modules/sections to receive full credit. Registration required. Email Certificates of Completion to jeff.last@noaa.gov |
Radar Interpretation
The radar training is not required to become a spotter, but is recommended for advanced spotters or net control operators.
Introduction to the WSR-88D NWS Doppler Radar -- Basic Doppler radar overview
Doppler Weather Radar Fundamentals -- Fundamentals of Doppler weather radar operations & how to interpret common phenomena
Dual Polarization Radar Fundamentals -- Dual-pol radar information
Severe Weather
Severe Weather 101 -- Severe weather basics
Additional Spotter Information
Packerland Amateur Radio Skywarn Society (PASS)
Milwaukee Area Skywarn Association (MASA)
Wisconsin Spotter Amateur Radio Frequencies
Watch the Weather Daily -- How you can contribute every day!
Become a Weather-Ready Nation Ambassador -- How your organization can become a WRN Ambassador
Severe Weather Awareness
The Microburst Handbook
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