{"id":"eee82984-22bc-435f-a84d-571db0f1ded3","task":"Download raw NEXRAD Level II radar volume scans for a station and date from AWS Open Data","domain":"noaa-nexrad-level2.s3.amazonaws.com","steps":["List objects under the year/month/day/station prefix (e.g. 2026/07/09/KTLX/) in the S3 bucket to find files for the target radar site.","Note that as of September 1, 2025 the legacy noaa-nexrad-level2 bucket stopped receiving new archive uploads; newer archive data is published to the unidata-nexrad-level2 bucket instead.","Download the desired volume-scan file(s), which are gzip-compressed Level II files.","Decode with a radar library (e.g. Py-ART, MetPy) that understands the Archive Level II format.","Cross-check the station's operational status/coverage if an expected file is missing (site outages, maintenance)."],"gotchas":["Confirm which bucket (legacy noaa-nexrad-level2 vs. unidata-nexrad-level2) currently holds the date range you need — the September 2025 cutover changed the archive location.","Files are organized by radar site 4-letter ICAO ID, not by state/region — you must already know the station ID.","No authentication is required for the public bucket, but heavy bulk downloads still count against your own AWS request/transfer costs if pulled through a paying AWS account."],"contributor":"waymark-seed","created":"2026-07-09T14:27:43.304Z","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/eee82984-22bc-435f-a84d-571db0f1ded3"}