- How to Read the Fifteen Content Areas
- The Written Exam Format and Registration Mechanics
- Foundation Domains: Knowledge, Data, Physics, and Models
- Systems Domains: Cyclones, Jets, and Regional Weather
- Remote Sensing Domains: Radar and Satellite
- Hazard Domains: Severe Storms, Flooding, Tropics, Winter, and Safety
- Climate and Station Scientist Domains
- What Is Not a Written-Test Domain
- Sequencing the Fifteen Areas Over Your Prep Window
- Frequently Asked Questions
- The AMS Certified Broadcast Meteorologist written test is organized around 15 substantive subject headings, from General Meteorological Knowledge through...
- AMS publishes no topic weights for these areas, so treat any "highest-weight domain" claim as unverified guesswork.
- The written exam is 100 multiple-choice/true-false questions with a 75% passing score; the weathercast evaluation is a separate hurdle.
- Remote first-attempt cost is $390 for members and $720 for nonmembers, before dues and preparation materials.
How to Read the Fifteen Content Areas
Every candidate for the American Meteorological Society's Certified Broadcast Meteorologist credential eventually asks the same question: what exactly is on the written test? The most reliable answer comes straight from the issuer. The AMS CBM Study Guide and its linked References page list the subject headings candidates are expected to prepare for. We counted fifteen substantive headings, running from General Meteorological Knowledge through Winter Weather. A general glossary entry appears just ahead of them on the reference list, but it is a terminology resource, not a subject area, so it is not counted among the fifteen.
Two caveats matter before you build a study plan around these headings. First, they are unweighted, issuer-published test-reference topics. They are not an official weighted or exhaustive examination blueprint. AMS does not publish percentages for them on the study guide or the references page, and the currently linked public reference list carries no numbered examination version. Second, any practice-question allocation you see on a prep site, including ours, is editorial. It reflects how we organize practice, not how AMS builds the exam.
For a full-path overview that ties these domains to application, evaluation, and renewal, see our CBM Study Guide 2026: How to Pass on Your First Attempt. If you are still confirming that this is the credential you mean, What Is CBM Certification? covers the basics of the Certified Broadcast Meteorologist program.
The Written Exam Format and Registration Mechanics
Knowing the domains is only half the picture. The written test itself has a specific shape, and the registration process has its own mechanics that are worth understanding before you start studying.
| Item | What the public sources show |
|---|---|
| Question count | 100 multiple-choice/true-false written questions |
| Scored vs. unscored split | Not disclosed |
| Open or closed book | Closed book |
| Time limit | 120 minutes per the legacy-provider official FAQ; reconfirm with your current appointment |
| Passing score | 75% on the written exam |
| Delivery | Remote or test center; current provider is SMT/Prometric, though an older AMS FAQ still names PSI |
| Application fee | $330 member / $660 nonmember |
| Testing fee per scheduling | $60 remote, $75 US center, or $85 international center |
| Remote first-attempt total | $390 member / $720 nonmember, excluding dues and preparation |
| Calculator and adaptive rules | Unverified; confirm at scheduling |
You apply through AMS first and schedule your testing appointment afterward. Because the testing fee is charged each time you schedule, a rescheduled or repeated attempt adds cost. Our CBM Certification Cost 2026: Complete Pricing Breakdown walks through how those pieces add up, and CBM Passing Score 2026: Exactly What You Need to Pass explains the 75% threshold in more detail.
Two format details shape how you should study. The test is closed book, so formulas, thresholds, and classification criteria must live in your memory. And with 100 questions in a fixed window, you have roughly a minute or so per item, which rewards fast recognition of standard patterns over long derivations. Because the scored versus unscored split is not disclosed, treat every question as if it counts.
Foundation Domains: Knowledge, Data, Physics, and Models
Four of the fifteen areas form the conceptual base that everything else sits on. Master these first, because later domains assume you can already use their vocabulary.
Domain 1: General Meteorological Knowledge
The entry point on the AMS list, and the broadest. Expect the core atmospheric science a degree-holding meteorologist should carry without looking anything up.
- Atmospheric structure, pressure, temperature, and moisture relationships
- Stability concepts and how they connect to cloud and precipitation development
- Basic wind and pressure-gradient reasoning used in everyday forecasting
- Standard meteorological terminology, which the AMS Glossary of Meteorology supports
Domain 4: Data & Instruments
This area tests whether you understand where weather information comes from and how reliable it is, not just how to display it on air.
- Surface and upper-air observing platforms and what each measures
- Instrument limitations, siting issues, and common sources of measurement error
- Interpreting observations correctly before they reach a graphic
Domain 6: Numerical Weather Prediction
Broadcasters live and die by model guidance, so this domain probes how models work and where they fail.
- How models represent the atmosphere and why forecasts diverge
- Strengths and weaknesses of different guidance types
- Recognizing when to trust, discount, or blend model output
Domain 7: Physical Meteorology
The physics layer: radiation, thermodynamics, and cloud and precipitation processes.
- Energy balance and radiative processes
- Thermodynamic reasoning behind condensation, evaporation, and phase change
- Microphysical ideas that explain precipitation type and intensity
If your degree was heavy on dynamics but light on instrumentation or model behavior, Domains 4 and 6 are common places to find gaps. For a realistic read on how demanding the overall exam feels, see How Hard Is the CBM Exam? Complete Difficulty Guide 2026.
Systems Domains: Cyclones, Jets, and Regional Weather
Domain 3: Cyclones and Jets
Large-scale dynamics: the engines that organize weather across a forecast area.
- Cyclone structure and the lifecycle of midlatitude systems
- Jet stream placement and its influence on surface weather
- Connecting upper-level patterns to the forecast you give viewers
Domain 9: Regional Weather
This is where broadcast meteorology becomes local. Regional patterns, terrain effects, and recurring seasonal setups all belong here.
- How geography shapes temperature, precipitation, and wind in a region
- Recurring regional phenomena and the patterns that precede them
- Applying large-scale reasoning to a local forecast
Regional Weather is one of the headings where preparation should be personal. If you work in one part of the country, deliberately study regimes you rarely forecast. A candidate who has spent a career on Gulf Coast convection can still be caught flat-footed by questions about mountain-influenced or lake-influenced weather elsewhere.
Remote Sensing Domains: Radar and Satellite
Radar and satellite are the two tools a broadcast meteorologist shows viewers most often, which is likely why each earns its own heading.
Domain 8: Radar Meteorology
Beyond reading a reflectivity loop, expect questions about what radar can and cannot tell you.
- Reflectivity and velocity interpretation
- Common artifacts, beam geometry limitations, and misleading returns
- Signatures associated with severe weather and heavy precipitation
Domain 10: Satellite
Satellite imagery interpretation, from basic channel reading to diagnosing features.
- Visible, infrared, and water vapor imagery and what each reveals
- Identifying cloud types, fronts, and developing systems from imagery
- Understanding limitations such as viewing angle and resolution
Hazard Domains: Severe Storms, Flooding, Tropics, Winter, and Safety
Five headings concentrate on the hazards viewers care about most. This cluster is where broadcast-specific judgment shows up most clearly.
Domain 11: Severe Storm Structure/Tornadoes
Storm organization, tornado formation, and the environments that favor each storm mode.
- Supercell and other convective storm structures
- Environmental ingredients for severe weather and tornadoes
- Recognizing hazard-producing features as they develop
Domain 5: Flooding
Flood forecasting and the meteorology that drives flash and river flooding.
- Rainfall processes and the setups that lead to flash flooding
- Differences between flash flooding and longer-duration river flooding
- Communicating flood threat clearly to a general audience
Domain 13: Tropical Meteorology
Tropical systems and the hazards that come with them.
- Tropical cyclone structure, development, and intensity change
- Associated hazards such as surge, wind, rainfall, and tornadoes
- Interpreting forecast products and uncertainty for these storms
Domain 15: Winter Weather
The last heading on the AMS list covers cold-season forecasting, where small temperature errors change everything.
- Precipitation-type reasoning: snow, sleet, freezing rain, and rain
- Temperature profile analysis and the role of warm and cold layers
- Winter storm impacts and how they differ across regions
Domain 14: Weather Safety
Safety belongs on a broadcaster's exam for a reason: your words affect decisions people make.
- Protective actions appropriate to different hazards
- Responsible warning communication and avoiding confusing messages
- The broadcaster's role during dangerous weather
These heading names are the actual labels in the AMS reference list, so use them as your search terms when pulling study materials. Not sure whether your career goals justify the effort? Is the CBM Certification Worth It? Complete ROI Analysis 2026 weighs that question, and CBM Jobs covers where the credential tends to matter.
Climate and Station Scientist Domains
Domain 2: Climatology & Climate Change
Climatology supports everyday broadcast content, from records and normals to seasonal outlooks, and climate change questions are part of the picture.
- Climate normals, variability, and how to describe departures accurately
- Large-scale climate patterns that influence seasonal weather
- Presenting climate information with scientific accuracy
Domain 12: Station Scientist
This is the heading most unique to the broadcast profession. A station scientist is often the person a newsroom turns to for scientific credibility, so expect content that goes beyond the forecast itself.
- Explaining science clearly to non-scientists
- Handling viewer questions, misinformation, and newsroom expectations
- Maintaining accuracy and professional standards when under deadline pressure
Candidates from pure research backgrounds sometimes underestimate Station Scientist because it does not look like a classic atmospheric science topic. Treat it as a first-class domain. It is where the credential distinguishes itself from a general meteorology test.
What Is Not a Written-Test Domain
One frequent source of confusion deserves its own section. The CBM program has a second major component, the weathercast evaluation, and its criteria are not written-test topic domains. After the written exam, candidates submit two additional weathercasts, active and routine, each a maximum of five minutes. The program requires an average above 3.0 separately in Graphical Content, Explanation, and Presentation. Spanish-language submissions require an English transcript.
Do not fold those three evaluation criteria into your list of exam domains. They measure your on-air work, not your recall of cyclone dynamics or radar signatures. Our CBM Requirements 2026: Eligibility, Prerequisites & How to Qualify article covers the eligibility side: an accredited meteorology or atmospheric science degree or approved equivalent, required coursework and transcripts, and two years of full-time or three years of part-time on-air experience, with student-station work excluded.
The credential is valid for one year. Annual renewal costs $206 for members and $515 for nonmembers, and 28 professional-development points are required every five years. If you want the quick-reference version of the facts, our CBM Cheat Sheet 2026: One-Page Review of Must-Know Facts compresses them onto a single page. Candidates asking about success rates should read CBM Pass Rate 2026: What the Data Shows, which explains why no current written-exam pass rate is publicly available.
Sequencing the Fifteen Areas Over Your Prep Window
Because the domains build on each other, order matters more than intensity. Here is one CBM-specific sequence, assuming a roughly six-week window; stretch or compress it to fit your exam date (see CBM Exam Dates 2026: Testing Windows, Deadlines & Scheduling for scheduling).
Foundations
- General Meteorological Knowledge and Physical Meteorology
- Skim the AMS glossary for terminology you do not use daily
Tools and Guidance
- Data & Instruments and Numerical Weather Prediction
- Drill model strengths and weaknesses, since closed-book recall matters
Large-Scale and Local Patterns
- Cyclones and Jets, then Regional Weather
- Spend extra time on regions you do not forecast
Remote Sensing and Storms
- Radar Meteorology, Satellite, and Severe Storm Structure/Tornadoes studied together
Hazards
- Flooding, Tropical Meteorology, Winter Weather, and Weather Safety
Profession and Review
- Climatology & Climate Change and Station Scientist
- Full-length timed practice across all fifteen areas
Key Takeaway
Finish with mixed, timed practice rather than topic-by-topic drilling. The real test interleaves all fifteen headings across 100 questions, so your final weeks should feel the same. Our CBM practice tests are built to mix domains this way, and you can review the full path in CBM Training.
If you are weighing how much preparation to buy, remember that the written fees already exceed several hundred dollars before you study a single page. A retake means paying the testing fee again, so one well-structured pass through all fifteen areas is cheaper than a rushed first attempt. When you are ready to test yourself against realistic question styles, start with the CBM Exam Prep practice questions and track which headings need another look.
Frequently Asked Questions
The AMS CBM Study Guide reference list contains fifteen substantive subject headings, from General Meteorological Knowledge through Winter Weather. A general glossary entry precedes them but is a terminology resource, not a subject area. The headings are unweighted study references, not an official exam blueprint.
AMS does not publish topic percentages for these headings, so there is no verified highest-weight domain. Any claim otherwise is a guess. The safest approach is to prepare all fifteen areas to a consistent standard rather than gambling on a few.
No. Graphical Content, Explanation, and Presentation are scored on your two submitted weathercasts, each a maximum of five minutes, and require an average above 3.0 in each criterion. They are separate from the written-test subject headings.
The written exam has 100 multiple-choice/true-false questions, is closed book, and requires a 75% passing score. The legacy-provider FAQ lists 120 minutes, so reconfirm the time limit with your current appointment. The scored versus unscored split is not disclosed.
It targets the broadcast profession specifically: communicating science to a general audience, maintaining accuracy under newsroom pressure, and serving as a credible scientific voice for a station. Treat it as a full domain, not an afterthought, since it distinguishes this credential from a general meteorology exam.