{"uid":"cap_7YEp1eAYJvy8T5qmaUkuz","slug":"x402-factory-winter-storm-alerts-a018285f","name":"x402-factory Winter Storm Alerts","description":"Active and forecast winter storm risk (NWS + model) — Active NWS alerts filtered to winter storm hazards for any US point, with model-based risk context. Same shape as /v1/alerts/severe with the hazard class fixed to winter storm.","url":"https://x402-factory.com/v1/alerts/winter","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"lat":{"type":"number","maximum":90,"minimum":-90},"lon":{"type":"number","maximum":180,"minimum":-180},"state":{"type":"string","pattern":"^[A-Za-z]{2}$","maxLength":2,"minLength":2}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["data","meta"],"properties":{"data":{"type":"object","required":["active","model_risk"],"properties":{"active":{"type":"array","items":{"type":"object","required":["event","severity","headline","onset","expires","source"],"properties":{"event":{"type":"string"},"onset":{"type":"string"},"source":{"type":"string","const":"NWS"},"expires":{"type":"string"},"headline":{"type":"string"},"severity":{"type":"string"}},"additionalProperties":false}},"model_risk":{"type":"array","items":{"type":"object","required":["hazard","window_start","window_end","probability"],"properties":{"hazard":{"type":"string"},"window_end":{"type":"string"},"probability":{"type":"number","maximum":1,"minimum":0},"window_start":{"type":"string"}},"additionalProperties":false}}},"additionalProperties":false},"meta":{"type":"object"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RXG4hnfmFOhQjzDmULDG1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns active NWS winter storm alerts and model-based probabilistic risk for any US point or state, filtered strictly to winter hazards.","exampleAgentPrompt":"Are there any active NWS winter storm warnings or watches for Denver, Colorado right now, and what does the model say about the probability of winter hazards there this week? Use lat 39.74 and lon -104.98.","exampleUseCases":[{"title":"Travel safety check before a road trip","prompt":"I'm driving from Chicago to Minneapolis tomorrow — can you check if there are any active blizzard or winter storm warnings along the way? Check the Minneapolis area around lat 44.98, lon -93.27."},{"title":"State-level winter storm monitoring for emergency management","prompt":"Pull all active NWS winter storm alerts for the state of Michigan right now and tell me which are most severe and when they expire."},{"title":"Automated overnight winter risk alert for a fleet manager","prompt":"Check the winter storm risk probability for our depot in Buffalo, NY — lat 42.89, lon -78.87 — and tell me if there's a meaningful chance of a winter hazard in the next 48-hour window so I can decide whether to pull trucks off the road."}],"resultDescription":"Returns two arrays: 'active' containing current NWS winter storm alerts (event name, severity, headline, onset/expires timestamps, source), and 'model_risk' containing probabilistic model-based forecasts for winter hazards (hazard type, forecast window start/end, probability 0–1). Also includes a metadata object.","failureModes":["Missing or invalid lat/lon and no state provided — returns error or empty result","State code not matching two-letter pattern — validation error","Coordinates outside US bounding box — no alerts returned or error","No active winter storm alerts for the queried location — empty active array","NWS data feed temporarily unavailable — upstream timeout or partial data","Model risk data not available for the period — empty model_risk array"],"whenToPreferThis":"Choose this endpoint when you specifically need winter storm hazard data (blizzards, ice storms, winter weather advisories) for a US location and want both live NWS alert status and probabilistic model-based risk in one call. Prefer it over general severe weather endpoints when the hazard class is specifically winter storms, and when you need the combined active-alert + model-probability shape rather than raw NWS feeds.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:57:15.531Z","isFirstParty":false}