Weather observation field guide
How to Become a Trained Weather Spotter (SKYWARN Guide)
SKYWARN training teaches volunteers to recognize significant weather, report it clearly, and support local National Weather Service warning decisions without putting themselves in danger.
Quick answer
To become a trained weather spotter, find the National Weather Service Forecast Office that serves your county and follow its SKYWARN training instructions. Classes are normally free and may be offered in person, by live webinar, or through approved online modules. Complete the local registration or quiz if required, save the reporting instructions, and refresh your training on the schedule recommended by that office.
To become a trained weather spotter, find the National Weather Service Forecast Office that serves your county and follow its SKYWARN training instructions. Classes are normally free and may be offered in person, by live webinar, or through approved online modules. Complete the local registration or quiz if required, save the reporting instructions, and refresh your training on the schedule recommended by that office.
What a trained weather spotter does
A spotter observes and reports significant weather to the appropriate National Weather Service office or local network. The role is not to forecast, issue warnings, or chase storms. The value comes from a timely, objective report with a clear location and source.Many spotters are emergency managers, firefighters, dispatchers, amateur radio operators, public-works employees, teachers, farmers, or utility workers. Interested members of the public are also welcome in many local programs.How to become a SKYWARN spotter
- Find your local NWS Forecast Office. Use the official SKYWARN office directory to open the training and reporting page for the office serving your county.
- Read the local requirements. Confirm accepted class formats, registration, age guidance, and whether national online modules count for local recognition.
- Complete the free training. Start with your office's instructions. The National Weather Service Weather Spotter Training Portal also provides national modules. A typical class covers storm development, structure, hazards, safety, reportable events, and communication.
- Finish any quiz or registration. Some offices issue a certificate, ID, or spotter number, others simply record contact details or provide reporting instructions.
- Save the reporting channels. Record the phone number, web form, amateur-radio net, or other methods your office accepts.
- Review the material regularly. Local procedures and reporting thresholds can change, and several offices recommend periodic refresher training.
Why the local office matters
There is no single nationwide certification process applied identically by every office. Some NWS offices accept the two MetEd national SKYWARN modules for recognition, others require a local instructor-led class or a local quiz. Certificates and spotter numbers are also handled locally.Do not assume an online completion badge is your local registration. Check the office serving the location where you will report, and follow that office's current instructions.
What spotter training covers
| Topic | What you learn | Why it matters |
|---|---|---|
| Storm structure | Updrafts, downdrafts, shelf clouds, wall clouds, and visual clues | Helps separate meaningful features from look-alikes |
| Severe criteria | Hail, damaging wind, tornado, flooding, and local winter hazards | Keeps reports aligned with forecast-office needs |
| Reporting | What, where, when, and what the hazard is doing | Gives forecasters usable ground truth |
| Safety | Safe observation locations, escape options, lightning, flooding, and road hazards | A report is never worth taking an avoidable risk |
| Estimation | Hail size, wind damage indicators, distance, direction, and movement | Improves consistency when instruments are unavailable |
How to report severe weather to the National Weather Service
A useful spotter report gives forecasters concise ground truth they can compare with radar and other observations. Use the reporting channel supplied by your local NWS office, lead with the hazard, and state clearly what you measured, estimated, or personally observed.Include the four essentials
- What: the specific hazard, measurement, or damage observed.
- Where: a precise location and direction from a known place.
- When: the observation time and whether it is ongoing.
- Source: identify yourself as a trained spotter and state whether the value was measured or estimated.
Example report: Quarter-size hail measured at 1 inch near Main Street and Oak Avenue in Springfield. It began at 4:22 p.m. and is ongoing. Measured with a ruler by a trained spotter.
| Hazard | Report | Useful details |
|---|---|---|
| Hail | Largest stone diameter | How it was measured, location, start and end time |
| Wind or damage | Measured or estimated wind and observed damage | Instrument or estimate method, tree-limb size and condition, structural damage |
| Flooding or heavy rain | Water depth, road status, or measured rainfall | Standing or flowing water, rising or falling level, measurement period |
| Wall cloud or funnel cloud | What you observed and whether rotation is persistent | Direction, movement, duration, and any uncertainty |
| Tornado | Ground contact, debris cloud, or related damage | Exact location, movement, time, and a safe observation position |