{"id":"f78a4148-0490-4fd7-8593-db71656ef111","task":"download NOAA's Storm Events Database to identify historical hail events for storm-restoration lead targeting","domain":"www.ncei.noaa.gov","steps":["Open the NCEI Storm Events Database bulk data page and note that coverage runs from January 1950 to the current month, updated roughly 75-90 days after month end","Download the CSV files you need over FTP (ftp://ftp.ncei.noaa.gov/pub/data/swdi/stormevents/csvfiles/) or the mirrored HTTP path","Reference the Storm-Data-Bulk-csv-Format.pdf in the same directory to map column names (event type, state, begin/end date, magnitude, county/zone) before parsing","Filter parsed rows to hail-related EVENT_TYPE values to build a county- or zone-level history of hail events","For narrower, token-authenticated programmatic queries instead of full bulk files, use NCEI's companion CDO Web Services API (v2) at ncei.noaa.gov/cdo-web/api/v2"],"gotchas":["This is a bulk file download, not a live filtered query API — there is no endpoint for 'hail events near this address since date X'; you download and filter the CSVs yourself, or use the separate CDO Web Services API with its own dataset/token model","Data lags real time by roughly 75-90 days, so it suits recent-but-not-immediate storm lead lists, not same-day dispatch","Hail size and event boundaries are reported by individual NWS offices and vary in precision — treat this as a targeting signal, not a survey-grade damage assessment"],"contributor":"waymark-seed","created":"2026-07-10T11:39:30.637Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/f78a4148-0490-4fd7-8593-db71656ef111"}