{ "generated_at": "2026-11-09T18:12:58.995Z", "flood_events": { "test": "River flood score vs Copernicus EMS satellite flood footprints", "run_at": "2026-11-09T17:46:41.637Z", "points_per_class_per_area": 250, "definitions": { "hit_rate_in_zone": "Share of really flooded points that score 20+ (inside the mapped 1-in-500-year river flood zone).", "hit_rate_in_or_near_zone": "Share of flooded points scoring 10+ (in the zone, or a 1-in-100-year flood within ~200 m).", "hit_rate_100yr": "Share of flooded points scoring 40+ (inside the 1-in-100-year zone).", "dry_flagged_in_zone": "Share of points in the same mapped area that stayed dry this time but score 20+. One flood rarely fills the whole hazard zone, so this is an upper bound on false alarms.", "auc": "Chance that a random flooded point scores higher than a random dry point (0.5 = coin flip, 1.0 = perfect)." }, "summary": [ { "group": "all", "events": 19, "areas": 35, "flooded_points": 8750, "dry_points": 8750, "hit_rate_in_zone_pct": 66.9, "hit_rate_in_zone_ci95": [ 65.9, 67.9 ], "hit_rate_in_or_near_zone_pct": 78.5, "hit_rate_100yr_pct": 63.3, "dry_flagged_in_zone_pct": 26.1, "dry_flagged_100yr_pct": 24.4, "auc": 0.744 }, { "group": "riverine", "events": 18, "areas": 31, "flooded_points": 7750, "dry_points": 7750, "hit_rate_in_zone_pct": 68.8, "hit_rate_in_zone_ci95": [ 67.8, 69.8 ], "hit_rate_in_or_near_zone_pct": 79.8, "hit_rate_100yr_pct": 65.3, "dry_flagged_in_zone_pct": 29, "dry_flagged_100yr_pct": 27.1, "auc": 0.741 }, { "group": "flash", "events": 3, "areas": 4, "flooded_points": 1000, "dry_points": 1000, "hit_rate_in_zone_pct": 52.4, "hit_rate_in_zone_ci95": [ 49.3, 55.5 ], "hit_rate_in_or_near_zone_pct": 68.6, "hit_rate_100yr_pct": 47.7, "dry_flagged_in_zone_pct": 3.9, "dry_flagged_100yr_pct": 3.6, "auc": 0.807 } ], "areas": [ { "code": "EMSR659", "aoi": "AOI01", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR659/AOI01/DEL_PRODUCT/EMSR659_AOI01_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 13.2, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 131, "wet_hit_in_or_near_zone": 162, "wet_hit_100yr": 122, "dry_flagged_in_zone": 108, "dry_flagged_100yr": 105 }, { "code": "EMSR659", "aoi": "AOI02", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR659/AOI02/DEL_PRODUCT/EMSR659_AOI02_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 0.2, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 1, "wet_hit_in_or_near_zone": 187, "wet_hit_100yr": 1, "dry_flagged_in_zone": 51, "dry_flagged_100yr": 48 }, { "code": "EMSR663", "aoi": "AOI01", "product": "GRA_PRODUCT_v3", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR663/AOI01/GRA_PRODUCT/EMSR663_AOI01_GRA_PRODUCT_v3.zip", "flood_type": "riverine", "flooded_km2": 42.1, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 174, "wet_hit_in_or_near_zone": 221, "wet_hit_100yr": 158, "dry_flagged_in_zone": 50, "dry_flagged_100yr": 45 }, { "code": "EMSR680", "aoi": "AOI01", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR680/AOI01/DEL_PRODUCT/EMSR680_AOI01_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 2.1, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 76, "wet_hit_in_or_near_zone": 108, "wet_hit_100yr": 72, "dry_flagged_in_zone": 7, "dry_flagged_100yr": 6 }, { "code": "EMSR680", "aoi": "AOI03", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR680/AOI03/DEL_PRODUCT/EMSR680_AOI03_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 0.3, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 18, "wet_hit_in_or_near_zone": 37, "wet_hit_100yr": 18, "dry_flagged_in_zone": 11, "dry_flagged_100yr": 9 }, { "code": "EMSR692", "aoi": "AOI01", "product": "DEL_MONIT01_v3", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR692/AOI01/DEL_MONIT01/EMSR692_AOI01_DEL_MONIT01_v3.zip", "flood_type": "riverine", "flooded_km2": 153.4, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 88, "wet_hit_in_or_near_zone": 110, "wet_hit_100yr": 80, "dry_flagged_in_zone": 29, "dry_flagged_100yr": 27 }, { "code": "EMSR692", "aoi": "AOI02", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR692/AOI02/DEL_PRODUCT/EMSR692_AOI02_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 133.3, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 223, "wet_hit_in_or_near_zone": 243, "wet_hit_100yr": 216, "dry_flagged_in_zone": 36, "dry_flagged_100yr": 30 }, { "code": "EMSR696", "aoi": "AOI01", "product": "GRA_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR696/AOI01/GRA_PRODUCT/EMSR696_AOI01_GRA_PRODUCT_v1.zip", "flood_type": "flash", "flooded_km2": 0.2, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 127, "wet_hit_in_or_near_zone": 188, "wet_hit_100yr": 98, "dry_flagged_in_zone": 6, "dry_flagged_100yr": 5 }, { "code": "EMSR696", "aoi": "AOI02", "product": "GRA_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR696/AOI02/GRA_PRODUCT/EMSR696_AOI02_GRA_PRODUCT_v2.zip", "flood_type": "flash", "flooded_km2": 0.7, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 2, "wet_hit_in_or_near_zone": 38, "wet_hit_100yr": 2, "dry_flagged_in_zone": 6, "dry_flagged_100yr": 6 }, { "code": "EMSR697", "aoi": "AOI01", "product": "DEL_PRODUCT_v3", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR697/AOI01/DEL_PRODUCT/EMSR697_AOI01_DEL_PRODUCT_v3.zip", "flood_type": "flash", "flooded_km2": 9.7, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 173, "wet_hit_in_or_near_zone": 221, "wet_hit_100yr": 162, "dry_flagged_in_zone": 15, "dry_flagged_100yr": 13 }, { "code": "EMSR697", "aoi": "AOI04", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR697/AOI04/DEL_PRODUCT/EMSR697_AOI04_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 1.2, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 5, "wet_hit_in_or_near_zone": 16, "wet_hit_100yr": 5, "dry_flagged_in_zone": 0, "dry_flagged_100yr": 0 }, { "code": "EMSR720", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR720/AOI01/DEL_PRODUCT/EMSR720_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 0.3, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 236, "wet_hit_in_or_near_zone": 250, "wet_hit_100yr": 220, "dry_flagged_in_zone": 72, "dry_flagged_100yr": 67 }, { "code": "EMSR720", "aoi": "AOI02", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR720/AOI02/DEL_PRODUCT/EMSR720_AOI02_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 1.6, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 189, "wet_hit_in_or_near_zone": 233, "wet_hit_100yr": 142, "dry_flagged_in_zone": 57, "dry_flagged_100yr": 46 }, { "code": "EMSR728", "aoi": "AOI01", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR728/AOI01/DEL_PRODUCT/EMSR728_AOI01_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 0.1, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 250, "wet_hit_in_or_near_zone": 250, "wet_hit_100yr": 250, "dry_flagged_in_zone": 11, "dry_flagged_100yr": 11 }, { "code": "EMSR728", "aoi": "AOI03", "product": "DEL_MONIT01_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR728/AOI03/DEL_MONIT01/EMSR728_AOI03_DEL_MONIT01_v2.zip", "flood_type": "riverine", "flooded_km2": 11.6, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 237, "wet_hit_in_or_near_zone": 247, "wet_hit_100yr": 234, "dry_flagged_in_zone": 65, "dry_flagged_100yr": 62 }, { "code": "EMSR753", "aoi": "AOI01", "product": "GRA_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR753/AOI01/GRA_PRODUCT/EMSR753_AOI01_GRA_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 16.7, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 175, "wet_hit_in_or_near_zone": 240, "wet_hit_100yr": 144, "dry_flagged_in_zone": 29, "dry_flagged_100yr": 15 }, { "code": "EMSR763", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR763/AOI01/DEL_PRODUCT/EMSR763_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 15.4, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 194, "wet_hit_in_or_near_zone": 234, "wet_hit_100yr": 180, "dry_flagged_in_zone": 175, "dry_flagged_100yr": 166 }, { "code": "EMSR768", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR768/AOI01/DEL_PRODUCT/EMSR768_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 7.9, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 243, "wet_hit_in_or_near_zone": 249, "wet_hit_100yr": 239, "dry_flagged_in_zone": 109, "dry_flagged_100yr": 106 }, { "code": "EMSR768", "aoi": "AOI02", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR768/AOI02/DEL_PRODUCT/EMSR768_AOI02_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 8.8, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 231, "wet_hit_in_or_near_zone": 237, "wet_hit_100yr": 230, "dry_flagged_in_zone": 30, "dry_flagged_100yr": 27 }, { "code": "EMSR771", "aoi": "AOI01", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR771/AOI01/DEL_PRODUCT/EMSR771_AOI01_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 29.9, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 93, "wet_hit_in_or_near_zone": 130, "wet_hit_100yr": 87, "dry_flagged_in_zone": 37, "dry_flagged_100yr": 37 }, { "code": "EMSR771", "aoi": "AOI04", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR771/AOI04/DEL_PRODUCT/EMSR771_AOI04_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 0.1, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 0, "wet_hit_in_or_near_zone": 0, "wet_hit_100yr": 0, "dry_flagged_in_zone": 0, "dry_flagged_100yr": 0 }, { "code": "EMSR772", "aoi": "AOI01", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR772/AOI01/DEL_PRODUCT/EMSR772_AOI01_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 231.5, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 184, "wet_hit_in_or_near_zone": 208, "wet_hit_100yr": 153, "dry_flagged_in_zone": 64, "dry_flagged_100yr": 55 }, { "code": "EMSR772", "aoi": "AOI02", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR772/AOI02/DEL_PRODUCT/EMSR772_AOI02_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 611, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 250, "wet_hit_in_or_near_zone": 250, "wet_hit_100yr": 248, "dry_flagged_in_zone": 238, "dry_flagged_100yr": 236 }, { "code": "EMSR773", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR773/AOI01/DEL_PRODUCT/EMSR773_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "flash", "flooded_km2": 156.5, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 222, "wet_hit_in_or_near_zone": 239, "wet_hit_100yr": 215, "dry_flagged_in_zone": 12, "dry_flagged_100yr": 12 }, { "code": "EMSR773", "aoi": "AOI02", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR773/AOI02/DEL_PRODUCT/EMSR773_AOI02_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 0.6, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 94, "wet_hit_in_or_near_zone": 212, "wet_hit_100yr": 67, "dry_flagged_in_zone": 4, "dry_flagged_100yr": 4 }, { "code": "EMSR779", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR779/AOI01/DEL_PRODUCT/EMSR779_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 78.4, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 178, "wet_hit_in_or_near_zone": 215, "wet_hit_100yr": 165, "dry_flagged_in_zone": 68, "dry_flagged_100yr": 56 }, { "code": "EMSR779", "aoi": "AOI02", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR779/AOI02/DEL_PRODUCT/EMSR779_AOI02_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 1295.5, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 250, "wet_hit_in_or_near_zone": 250, "wet_hit_100yr": 249, "dry_flagged_in_zone": 241, "dry_flagged_100yr": 238 }, { "code": "EMSR783", "aoi": "AOI01", "product": "DEL_PRODUCT_v3", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR783/AOI01/DEL_PRODUCT/EMSR783_AOI01_DEL_PRODUCT_v3.zip", "flood_type": "riverine", "flooded_km2": 4.8, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 160, "wet_hit_in_or_near_zone": 176, "wet_hit_100yr": 158, "dry_flagged_in_zone": 6, "dry_flagged_100yr": 6 }, { "code": "EMSR783", "aoi": "AOI03", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR783/AOI03/DEL_PRODUCT/EMSR783_AOI03_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 1.6, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 238, "wet_hit_in_or_near_zone": 250, "wet_hit_100yr": 234, "dry_flagged_in_zone": 25, "dry_flagged_100yr": 24 }, { "code": "EMSR838", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR838/AOI01/DEL_PRODUCT/EMSR838_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 878.6, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 209, "wet_hit_in_or_near_zone": 241, "wet_hit_100yr": 192, "dry_flagged_in_zone": 145, "dry_flagged_100yr": 118 }, { "code": "EMSR838", "aoi": "AOI02", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR838/AOI02/DEL_PRODUCT/EMSR838_AOI02_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 106.2, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 246, "wet_hit_in_or_near_zone": 250, "wet_hit_100yr": 244, "dry_flagged_in_zone": 231, "dry_flagged_100yr": 223 }, { "code": "EMSR857", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR857/AOI01/DEL_PRODUCT/EMSR857_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 882.5, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 249, "wet_hit_in_or_near_zone": 250, "wet_hit_100yr": 248, "dry_flagged_in_zone": 175, "dry_flagged_100yr": 170 }, { "code": "EMSR857", "aoi": "AOI02", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR857/AOI02/DEL_PRODUCT/EMSR857_AOI02_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 121.5, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 237, "wet_hit_in_or_near_zone": 243, "wet_hit_100yr": 231, "dry_flagged_in_zone": 61, "dry_flagged_100yr": 58 }, { "code": "EMSR868", "aoi": "AOI01", "product": "DEL_PRODUCT_v1", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR868/AOI01/DEL_PRODUCT/EMSR868_AOI01_DEL_PRODUCT_v1.zip", "flood_type": "riverine", "flooded_km2": 26, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 245, "wet_hit_in_or_near_zone": 248, "wet_hit_100yr": 244, "dry_flagged_in_zone": 55, "dry_flagged_100yr": 54 }, { "code": "EMSR868", "aoi": "AOI02", "product": "DEL_PRODUCT_v2", "source_url": "https://rapidmapping.emergency.copernicus.eu/backend/EMSR868/AOI02/DEL_PRODUCT/EMSR868_AOI02_DEL_PRODUCT_v2.zip", "flood_type": "riverine", "flooded_km2": 58.5, "wet_points": 250, "dry_points": 250, "wet_hit_in_zone": 229, "wet_hit_in_or_near_zone": 237, "wet_hit_100yr": 229, "dry_flagged_in_zone": 54, "dry_flagged_100yr": 54 } ], "attribution": "Flood footprints: Copernicus Emergency Management Service (c) European Union. Hazard maps: JRC/GloFAS v2.1, CC BY 4.0." }, "england_ea": { "test": "River flood zones vs Environment Agency Flood Map for Planning (England)", "run_at": "2026-11-09T18:12:30.782Z", "points_per_town": 400, "definitions": { "fz3_caught_by_our_100yr_zone": "Share of points in official Flood Zone 3 (1%+ a year) that we also put in our 1-in-100-year zone.", "fz3_caught_by_our_any_zone": "Share of Flood Zone 3 points we put in any of our zones (up to 1-in-500-year).", "outside_ea_but_flagged_by_us": "Share of points outside both official zones that we still flag.", "overall_agreement": "Share of all points where both maps agree on \"in a flood zone\" vs \"not\".", "auc": "Chance that a random official-zone point scores higher than a random point outside (0.5 = coin flip)." }, "summary": { "towns": 10, "points": 4000, "ea_fz3_points": 492, "fz3_caught_by_our_100yr_zone_pct": 71.5, "fz3_caught_by_our_any_zone_pct": 73.6, "fz3_caught_by_our_any_zone_ci95": [ 69.5, 77.3 ], "fz2or3_caught_by_our_any_zone_pct": 66, "outside_ea_but_flagged_by_us_pct": 4.8, "overall_agreement_pct": 90.4, "auc": 0.848 }, "towns": [ { "town": "York", "points": 400, "ea_fz3": 28, "ea_fz2": 23, "ea_outside": 349, "fz3_in_our_100yr": 24, "fz3_in_our_any_zone": 24, "fz2or3_in_our_any_zone": 36, "outside_but_our_zone": 93 }, { "town": "Carlisle", "points": 400, "ea_fz3": 55, "ea_fz2": 19, "ea_outside": 326, "fz3_in_our_100yr": 32, "fz3_in_our_any_zone": 32, "fz2or3_in_our_any_zone": 40, "outside_but_our_zone": 4 }, { "town": "Shrewsbury", "points": 400, "ea_fz3": 40, "ea_fz2": 6, "ea_outside": 354, "fz3_in_our_100yr": 30, "fz3_in_our_any_zone": 30, "fz2or3_in_our_any_zone": 32, "outside_but_our_zone": 19 }, { "town": "Worcester", "points": 400, "ea_fz3": 45, "ea_fz2": 10, "ea_outside": 345, "fz3_in_our_100yr": 31, "fz3_in_our_any_zone": 31, "fz2or3_in_our_any_zone": 31, "outside_but_our_zone": 2 }, { "town": "Gloucester", "points": 400, "ea_fz3": 75, "ea_fz2": 21, "ea_outside": 304, "fz3_in_our_100yr": 61, "fz3_in_our_any_zone": 63, "fz2or3_in_our_any_zone": 70, "outside_but_our_zone": 2 }, { "town": "Oxford", "points": 400, "ea_fz3": 62, "ea_fz2": 19, "ea_outside": 319, "fz3_in_our_100yr": 48, "fz3_in_our_any_zone": 52, "fz2or3_in_our_any_zone": 65, "outside_but_our_zone": 14 }, { "town": "Leeds", "points": 400, "ea_fz3": 10, "ea_fz2": 13, "ea_outside": 377, "fz3_in_our_100yr": 4, "fz3_in_our_any_zone": 4, "fz2or3_in_our_any_zone": 10, "outside_but_our_zone": 4 }, { "town": "Doncaster", "points": 400, "ea_fz3": 66, "ea_fz2": 28, "ea_outside": 306, "fz3_in_our_100yr": 37, "fz3_in_our_any_zone": 37, "fz2or3_in_our_any_zone": 48, "outside_but_our_zone": 2 }, { "town": "Nottingham", "points": 400, "ea_fz3": 68, "ea_fz2": 19, "ea_outside": 313, "fz3_in_our_100yr": 54, "fz3_in_our_any_zone": 57, "fz2or3_in_our_any_zone": 66, "outside_but_our_zone": 7 }, { "town": "Bedford", "points": 400, "ea_fz3": 43, "ea_fz2": 11, "ea_outside": 346, "fz3_in_our_100yr": 31, "fz3_in_our_any_zone": 32, "fz2or3_in_our_any_zone": 38, "outside_but_our_zone": 13 } ], "attribution": "Contains Environment Agency information (c) Environment Agency and/or database right. Open Government Licence v3.0. Hazard maps: JRC/GloFAS v2.1, CC BY 4.0." }, "us_fema": { "test": "River flood zones vs FEMA National Flood Hazard Layer (US)", "run_at": "2026-11-09T17:52:24.413Z", "points_per_city": 300, "definitions": { "sfha_caught_by_our_any_zone": "Share of points in FEMA 1%-a-year zones (A, AE, AH, AO) that we put in any of our zones.", "outside_fema_but_flagged_by_us": "Share of points outside every FEMA flood zone that we still flag.", "overall_agreement": "Share of points (excluding levee-protected and coastal) where both maps agree." }, "summary": { "cities": 10, "points": 3000, "fema_sfha_points": 450, "sfha_caught_by_our_100yr_zone_pct": 80, "sfha_caught_by_our_any_zone_pct": 82.2, "sfha_caught_by_our_any_zone_ci95": [ 78.4, 85.5 ], "outside_fema_but_flagged_by_us_pct": 12.6, "overall_agreement_pct": 85.8, "auc": 0.882, "levee_points_left_out": 338 }, "cities": [ { "city": "Cedar Rapids IA", "points": 300, "fema_sfha": 29, "fema_02pct": 15, "fema_levee": 0, "fema_outside": 256, "sfha_in_our_100yr": 24, "sfha_in_our_any_zone": 25, "outside_but_our_zone": 11 }, { "city": "Des Moines IA", "points": 300, "fema_sfha": 43, "fema_02pct": 0, "fema_levee": 25, "fema_outside": 232, "sfha_in_our_100yr": 35, "sfha_in_our_any_zone": 35, "outside_but_our_zone": 5 }, { "city": "Nashville TN", "points": 300, "fema_sfha": 29, "fema_02pct": 7, "fema_levee": 7, "fema_outside": 257, "sfha_in_our_100yr": 20, "sfha_in_our_any_zone": 22, "outside_but_our_zone": 32 }, { "city": "Sacramento CA", "points": 300, "fema_sfha": 71, "fema_02pct": 0, "fema_levee": 103, "fema_outside": 126, "sfha_in_our_100yr": 70, "sfha_in_our_any_zone": 70, "outside_but_our_zone": 98 }, { "city": "Kansas City MO", "points": 300, "fema_sfha": 31, "fema_02pct": 5, "fema_levee": 48, "fema_outside": 216, "sfha_in_our_100yr": 28, "sfha_in_our_any_zone": 28, "outside_but_our_zone": 12 }, { "city": "Omaha NE", "points": 300, "fema_sfha": 33, "fema_02pct": 0, "fema_levee": 90, "fema_outside": 177, "sfha_in_our_100yr": 27, "sfha_in_our_any_zone": 27, "outside_but_our_zone": 11 }, { "city": "Fargo ND", "points": 300, "fema_sfha": 48, "fema_02pct": 129, "fema_levee": 46, "fema_outside": 77, "sfha_in_our_100yr": 42, "sfha_in_our_any_zone": 43, "outside_but_our_zone": 43 }, { "city": "Harrisburg PA", "points": 300, "fema_sfha": 69, "fema_02pct": 11, "fema_levee": 0, "fema_outside": 220, "sfha_in_our_100yr": 49, "sfha_in_our_any_zone": 49, "outside_but_our_zone": 1 }, { "city": "Little Rock AR", "points": 300, "fema_sfha": 75, "fema_02pct": 9, "fema_levee": 4, "fema_outside": 212, "sfha_in_our_100yr": 52, "sfha_in_our_any_zone": 58, "outside_but_our_zone": 37 }, { "city": "Columbus OH", "points": 300, "fema_sfha": 22, "fema_02pct": 16, "fema_levee": 15, "fema_outside": 247, "sfha_in_our_100yr": 13, "sfha_in_our_any_zone": 13, "outside_but_our_zone": 4 } ], "attribution": "FEMA National Flood Hazard Layer (public domain), via Esri Living Atlas \"USA Flood Hazard Areas\". Hazard maps: JRC/GloFAS v2.1, CC BY 4.0." }, "stations": { "test": "Heat, rain and frost: NASA POWER grid (our data) vs NOAA GHCN-Daily stations", "run_at": "2026-11-09T17:43:56.889Z", "period": "2005-2024", "definitions": { "median_error": "Typical size of the gap between our number and the station, in the metric unit.", "median_bias": "Typical direction of the gap. Negative = we read lower than the station.", "rank_correlation": "Do places rank in the same order? 1.0 = same order, 0 = no link (Spearman).", "same_grade_pct": "Share of stations where our A-E grade equals the grade the station data gives." }, "note": "A station is one point; our data is a ~50 km grid average. Some gap is expected, mostly for rain extremes and hilly or coastal sites.", "stations": 111, "overall": { "metrics": { "hot_days_35c": { "unit": "days/yr", "stations": 81, "median_error": 2.5, "median_bias": -0.8, "median_bias_pct": -25, "rank_correlation": 0.834 }, "hottest_day": { "unit": "C", "stations": 81, "median_error": 1.6, "median_bias": -1.4, "median_bias_pct": -3, "rank_correlation": 0.887 }, "annual_rain": { "unit": "mm/yr", "stations": 74, "median_error": 94.5, "median_bias": 50, "median_bias_pct": 11, "rank_correlation": 0.964 }, "wettest_day": { "unit": "mm", "stations": 74, "median_error": 11, "median_bias": -10.5, "median_bias_pct": -24, "rank_correlation": 0.853 }, "frost_days": { "unit": "days/yr", "stations": 68, "median_error": 9.6, "median_bias": 0, "median_bias_pct": -2, "rank_correlation": 0.958 } }, "grades": { "heat": { "stations": 81, "same_grade_pct": 61.7, "within_one_grade_pct": 91.4, "median_score_gap": 7 }, "drought": { "stations": 74, "same_grade_pct": 68.9, "within_one_grade_pct": 98.6, "median_score_gap": 4 }, "heavy_rain": { "stations": 74, "same_grade_pct": 41.9, "within_one_grade_pct": 87.8, "median_score_gap": 10.5 }, "cold": { "stations": 68, "same_grade_pct": 73.5, "within_one_grade_pct": 95.6, "median_score_gap": 3.5 } } }, "by_region": { "Africa": { "stations": 20, "metrics": { "hot_days_35c": { "unit": "days/yr", "stations": 17, "median_error": 15.3, "median_bias": -12.8, "median_bias_pct": -25, "rank_correlation": 0.89 }, "hottest_day": { "unit": "C", "stations": 17, "median_error": 1.5, "median_bias": -1.4, "median_bias_pct": -3, "rank_correlation": 0.892 }, "annual_rain": { "unit": "mm/yr", "stations": 7, "median_error": 48, "median_bias": 40, "median_bias_pct": 21, "rank_correlation": 0.679 }, "wettest_day": { "unit": "mm", "stations": 7, "median_error": 4.4, "median_bias": 2.4, "median_bias_pct": 9, "rank_correlation": 0.857 }, "frost_days": { "unit": "days/yr", "stations": 12, "median_error": 0.3, "median_bias": 0, "median_bias_pct": -14, "rank_correlation": 0.923 } }, "grades": { "heat": { "stations": 17, "same_grade_pct": 52.9, "within_one_grade_pct": 82.4, "median_score_gap": 7 }, "drought": { "stations": 7, "same_grade_pct": 71.4, "within_one_grade_pct": 100, "median_score_gap": 4 }, "heavy_rain": { "stations": 7, "same_grade_pct": 85.7, "within_one_grade_pct": 100, "median_score_gap": 4 }, "cold": { "stations": 12, "same_grade_pct": 91.7, "within_one_grade_pct": 100, "median_score_gap": 0 } } }, "Middle East": { "stations": 20, "metrics": { "hot_days_35c": { "unit": "days/yr", "stations": 11, "median_error": 9.9, "median_bias": -6.2, "median_bias_pct": -7, "rank_correlation": 0.918 }, "hottest_day": { "unit": "C", "stations": 11, "median_error": 0.9, "median_bias": -0.5, "median_bias_pct": -1, "rank_correlation": 0.875 }, "annual_rain": { "unit": "mm/yr", "stations": 10, "median_error": 26.5, "median_bias": 22, "median_bias_pct": 9, "rank_correlation": 0.766 }, "wettest_day": { "unit": "mm", "stations": 10, "median_error": 10, "median_bias": -8.8, "median_bias_pct": -25, "rank_correlation": 0.418 } }, "grades": { "heat": { "stations": 11, "same_grade_pct": 72.7, "within_one_grade_pct": 90.9, "median_score_gap": 3 }, "drought": { "stations": 10, "same_grade_pct": 60, "within_one_grade_pct": 100, "median_score_gap": 5 }, "heavy_rain": { "stations": 10, "same_grade_pct": 50, "within_one_grade_pct": 100, "median_score_gap": 10 } } }, "Europe": { "stations": 20, "metrics": { "hot_days_35c": { "unit": "days/yr", "stations": 17, "median_error": 0.1, "median_bias": 0, "median_bias_pct": -74, "rank_correlation": 0.803 }, "hottest_day": { "unit": "C", "stations": 17, "median_error": 2.5, "median_bias": -2.5, "median_bias_pct": -8, "rank_correlation": 0.914 }, "annual_rain": { "unit": "mm/yr", "stations": 18, "median_error": 115, "median_bias": 95, "median_bias_pct": 13, "rank_correlation": 0.651 }, "wettest_day": { "unit": "mm", "stations": 18, "median_error": 8.3, "median_bias": -8.2, "median_bias_pct": -24, "rank_correlation": 0.543 }, "frost_days": { "unit": "days/yr", "stations": 15, "median_error": 10, "median_bias": 7.4, "median_bias_pct": 5, "rank_correlation": 0.963 } }, "grades": { "heat": { "stations": 17, "same_grade_pct": 76.5, "within_one_grade_pct": 100, "median_score_gap": 9 }, "drought": { "stations": 18, "same_grade_pct": 72.2, "within_one_grade_pct": 100, "median_score_gap": 6 }, "heavy_rain": { "stations": 18, "same_grade_pct": 27.8, "within_one_grade_pct": 94.4, "median_score_gap": 8.5 }, "cold": { "stations": 15, "same_grade_pct": 66.7, "within_one_grade_pct": 100, "median_score_gap": 2 } } }, "South and East Asia": { "stations": 20, "metrics": { "hot_days_35c": { "unit": "days/yr", "stations": 16, "median_error": 2.2, "median_bias": -1.5, "median_bias_pct": -71, "rank_correlation": 0.815 }, "hottest_day": { "unit": "C", "stations": 16, "median_error": 1.9, "median_bias": -1.1, "median_bias_pct": -3, "rank_correlation": 0.814 }, "annual_rain": { "unit": "mm/yr", "stations": 16, "median_error": 78, "median_bias": 11.5, "median_bias_pct": 1, "rank_correlation": 0.983 }, "wettest_day": { "unit": "mm", "stations": 16, "median_error": 35.3, "median_bias": -35.3, "median_bias_pct": -38, "rank_correlation": 0.762 }, "frost_days": { "unit": "days/yr", "stations": 10, "median_error": 16.8, "median_bias": 16.8, "median_bias_pct": 32, "rank_correlation": 0.951 } }, "grades": { "heat": { "stations": 16, "same_grade_pct": 50, "within_one_grade_pct": 93.8, "median_score_gap": 13.5 }, "drought": { "stations": 16, "same_grade_pct": 87.5, "within_one_grade_pct": 100, "median_score_gap": 2 }, "heavy_rain": { "stations": 16, "same_grade_pct": 18.8, "within_one_grade_pct": 68.8, "median_score_gap": 23.5 }, "cold": { "stations": 10, "same_grade_pct": 60, "within_one_grade_pct": 100, "median_score_gap": 5 } } }, "North America": { "stations": 20, "metrics": { "hot_days_35c": { "unit": "days/yr", "stations": 20, "median_error": 5, "median_bias": -0.8, "median_bias_pct": -32, "rank_correlation": 0.53 }, "hottest_day": { "unit": "C", "stations": 20, "median_error": 1.5, "median_bias": -1.1, "median_bias_pct": -3, "rank_correlation": 0.659 }, "annual_rain": { "unit": "mm/yr", "stations": 20, "median_error": 108.5, "median_bias": 69.5, "median_bias_pct": 18, "rank_correlation": 0.826 }, "wettest_day": { "unit": "mm", "stations": 20, "median_error": 7.9, "median_bias": -7.8, "median_bias_pct": -22, "rank_correlation": 0.858 }, "frost_days": { "unit": "days/yr", "stations": 20, "median_error": 10.3, "median_bias": -3.5, "median_bias_pct": -7, "rank_correlation": 0.892 } }, "grades": { "heat": { "stations": 20, "same_grade_pct": 60, "within_one_grade_pct": 90, "median_score_gap": 7.5 }, "drought": { "stations": 20, "same_grade_pct": 50, "within_one_grade_pct": 95, "median_score_gap": 6 }, "heavy_rain": { "stations": 20, "same_grade_pct": 50, "within_one_grade_pct": 85, "median_score_gap": 8 }, "cold": { "stations": 20, "same_grade_pct": 80, "within_one_grade_pct": 95, "median_score_gap": 3.5 } } }, "Latin America": { "stations": 11, "metrics": { "frost_days": { "unit": "days/yr", "stations": 8, "median_error": 12.7, "median_bias": -11.3, "median_bias_pct": -53, "rank_correlation": 0.81 } }, "grades": { "cold": { "stations": 8, "same_grade_pct": 50, "within_one_grade_pct": 75, "median_score_gap": 9 } } } }, "attribution": "Stations: NOAA NCEI GHCN-Daily. Grid: NASA Langley Research Center POWER Project." } }