Safety

The rules we build around

• The National Weather Service is authoritative. If NWS issues a warning, follow it — regardless of what any CrewCast score says.
• Scores are estimates. The Job-Site Score and trade badges are computed from forecast data with documented thresholds (tap "Why this score?"). Forecasts have error bars; our confidence label reflects data freshness, not certainty.
• Verify on site. Microclimates, site conditions, equipment, and crew factors are invisible to any weather app.
• OSHA and local code always win. Nothing in CrewCast overrides OSHA guidance (heat illness prevention, severe-weather stop-work, trenching after rain, work-at-height wind limits) or local requirements.

Lightning

If you can hear thunder, you are within striking distance. Follow the NWS "When Thunder Roars, Go Indoors" guidance: suspend outdoor work, get off roofs, lifts, and scaffolds, and wait at least 30 minutes after the last thunder before resuming.

Heat

Heat index estimates in CrewCast use the standard NWS formula, but exertion, PPE, and direct sun raise effective heat stress well beyond the number shown. Follow OSHA's water-rest-shade guidance and acclimatization schedules.

Wind & work at height

Our wind thresholds are general industry rules of thumb. Your equipment manuals (cranes, lifts, hoists) and site safety plan set the real limits — use the lower of the two.

Flooding & trenches

Rain saturating soil creates cave-in risk that persists after the rain stops. A "conditions favorable" badge after a storm does not mean a trench is safe — re-inspect per OSHA requirements.

Emergency information

CrewCast is not an emergency service. For life-threatening situations call 911. For official forecasts and warnings visit weather.gov.