{"multigmpe": {"PGA": {"gmpes": [{"gmpes": ["[AbrahamsonEtAl2014]", "[BooreEtAl2014]", "[CampbellBozorgnia2014]", "[ChiouYoungs2014]"], "weights": [0.25, 0.25, 0.25, 0.25], "name": "active_crustal_nshmp2014"}, {"gmpes": ["[ParkerEtAl2020SInterAK]", "[AbrahamsonGulerce2020SInterAK]", "[KuehnEtAl2020SInterAK]"], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_interface_alaska"}, {"gmpes": ["[ParkerEtAl2020SSlab]\nregion = \"AK\"", "[AbrahamsonGulerce2020SSlab]\nregion = \"USA-AK\"", "[KuehnEtAl2020SSlab]\nregion = \"USA-AK\""], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_slab_alaska"}], "weights": [0.6890087832069396, 0.25, 0.06099121679306041], "name": "gmpe_a2026fwdmas_custom"}, "SA(1.0)": {"gmpes": [{"gmpes": ["[AbrahamsonEtAl2014]", "[BooreEtAl2014]", "[CampbellBozorgnia2014]", "[ChiouYoungs2014]"], "weights": [0.25, 0.25, 0.25, 0.25], "name": "active_crustal_nshmp2014"}, {"gmpes": ["[ParkerEtAl2020SInterAK]", "[AbrahamsonGulerce2020SInterAK]", "[KuehnEtAl2020SInterAK]"], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_interface_alaska"}, {"gmpes": ["[ParkerEtAl2020SSlab]\nregion = \"AK\"", "[AbrahamsonGulerce2020SSlab]\nregion = \"USA-AK\"", "[KuehnEtAl2020SSlab]\nregion = \"USA-AK\""], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_slab_alaska"}], "weights": [0.6890087832069396, 0.25, 0.06099121679306041], "name": "gmpe_a2026fwdmas_custom"}, "SA(0.3)": {"gmpes": [{"gmpes": ["[AbrahamsonEtAl2014]", "[BooreEtAl2014]", "[CampbellBozorgnia2014]", "[ChiouYoungs2014]"], "weights": [0.25, 0.25, 0.25, 0.25], "name": "active_crustal_nshmp2014"}, {"gmpes": ["[ParkerEtAl2020SInterAK]", "[AbrahamsonGulerce2020SInterAK]", "[KuehnEtAl2020SInterAK]"], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_interface_alaska"}, {"gmpes": ["[ParkerEtAl2020SSlab]\nregion = \"AK\"", "[AbrahamsonGulerce2020SSlab]\nregion = \"USA-AK\"", "[KuehnEtAl2020SSlab]\nregion = \"USA-AK\""], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_slab_alaska"}], "weights": [0.6890087832069396, 0.25, 0.06099121679306041], "name": "gmpe_a2026fwdmas_custom"}, "PGV": {"gmpes": [{"gmpes": ["[AbrahamsonEtAl2014]", "[BooreEtAl2014]", "[CampbellBozorgnia2014]", "[ChiouYoungs2014]"], "weights": [0.25, 0.25, 0.25, 0.25], "name": "active_crustal_nshmp2014"}, {"gmpes": ["[ParkerEtAl2020SInterAK]", "[AbrahamsonGulerce2020SInterAK]", "[KuehnEtAl2020SInterAK]"], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_interface_alaska"}, {"gmpes": ["[ParkerEtAl2020SSlab]\nregion = \"AK\"", "[AbrahamsonGulerce2020SSlab]\nregion = \"USA-AK\"", "[KuehnEtAl2020SSlab]\nregion = \"USA-AK\""], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_slab_alaska"}], "weights": [0.6890087832069396, 0.25, 0.06099121679306041], "name": "gmpe_a2026fwdmas_custom"}, "SA(3.0)": {"gmpes": [{"gmpes": ["[AbrahamsonEtAl2014]", "[BooreEtAl2014]", "[CampbellBozorgnia2014]", "[ChiouYoungs2014]"], "weights": [0.25, 0.25, 0.25, 0.25], "name": "active_crustal_nshmp2014"}, {"gmpes": ["[ParkerEtAl2020SInterAK]", "[AbrahamsonGulerce2020SInterAK]", "[KuehnEtAl2020SInterAK]"], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_interface_alaska"}, {"gmpes": ["[ParkerEtAl2020SSlab]\nregion = \"AK\"", "[AbrahamsonGulerce2020SSlab]\nregion = \"USA-AK\"", "[KuehnEtAl2020SSlab]\nregion = \"USA-AK\""], "weights": [0.3333, 0.3333, 0.3334], "name": "subduction_slab_alaska"}], "weights": [0.6890087832069396, 0.25, 0.06099121679306041], "name": "gmpe_a2026fwdmas_custom"}}, "input": {"event_information": {"depth": "14.7633", "event_id": "a2026fwdmas", "eventsource": "AK", "netid": "AK", "eventsourcecode": "a2026fwdmas", "id": "a2026fwdmas", "productcode": "a2026fwdmas", "productsource": "ak", "producttype": "shakemap", "event_ref": "Origin", "fault_ref": "Origin", "intensity_observations": "0", "latitude": "57.4091", "longitude": "-154.109", "location": "16 km (10 miles) SSW of Larsen Bay", "magnitude": "3.20202", "origin_time": "2026-03-24T21:04:41.038475Z", "seismic_stations": "9", "src_mech": "SS", "event_description": "16 km (10 miles) SSW of Larsen Bay", "event_type": "ACTUAL", "origin_reviewed": "unknown"}}, "strec": {"TectonicRegion": "Subduction", "FocalMechanism": "SS", "TensorType": "composite", "TensorSource": "composite", "KaganAngle": 83.19669868143647, "CompositeVariability": 0.3014834648178708, "NComposite": 3, "DistanceToStable": 755.7093646127806, "DistanceToActive": 231.9591961874713, "DistanceToSubduction": 0.0, "DistanceToVolcanic": 2866.5457190208667, "Oceanic": false, "DistanceToOceanic": 230.70357608212242, "DistanceToContinental": 0.0, "SlabModelRegion": "Alaska-Aleutians", "SlabModelDepth": 31.510435104370117, "SlabModelDepthUncertainty": 21.19640350341797, "SlabModelDip": 12.312434196472168, "SlabModelStrike": 223.43882751464844, "SlabModelMaximumDepth": 45, "ProbabilityActive": 0.0, "ProbabilityStable": 0.0, "ProbabilitySubduction": 1.0, "ProbabilityVolcanic": 0.0, "ProbabilitySubductionCrustal": 0.6890087832069396, "ProbabilitySubductionInterface": 0.25, "ProbabilitySubductionIntraslab": 0.06099121679306041, "ProbabilityVolcanicShallow": 0.0, "ProbabilityActiveShallow": 0.0, "ProbabilityActiveDeep": 0.0, "DistanceToBackarc": 82.1088241637239, "ProbabilityStableShallow": 0.0}, "output": {"ground_motions": {"PGA": {"units": "g", "bias": "0.04", "max_grid": "0.01", "max": "0.01"}, "SA(1.0)": {"units": "g", "bias": "0.145", "max_grid": "0.001", "max": "0.001"}, "SA(0.3)": {"units": "g", "bias": "0.288", "max_grid": "0.016", "max": "0.016"}, "MMI": {"units": "intensity", "bias": "0.003", "max_grid": "3.135", "max": "3.135"}, "PGV": {"units": "cms", "bias": "0.205", "max_grid": "0.274", "max": "0.274"}, "SA(3.0)": {"units": "g", "bias": "0.178", "max_grid": "0.0", "max": "0.0"}}, "map_information": {"grid_points": {"longitude": "799", "latitude": "435", "units": ""}, "grid_spacing": {"longitude": "0.0083333", "latitude": "0.0083333", "units": "degrees"}, "grid_span": {"longitude": "6.65", "latitude": "3.617", "units": "degrees"}, "min": {"longitude": "-157.25", "latitude": "55.55", "units": "degrees"}, "max": {"longitude": "-150.6", "latitude": "59.167", "units": "degrees"}}, "uncertainty": {"grade": "--", "mean_uncertainty_ratio": null, "total_flagged_mi": "0", "total_flagged_pgm": "0"}}, "processing": {"ground_motion_modules": {"gmpe": {"module": "gmpe_a2026fwdmas_custom", "reference": ""}, "ipe": {"module": "VirtualIPE", "reference": ""}, "gmice": {"module": "WGRW12", "reference": ""}, "ccf": {"module": "LothBaker2013", "reference": ""}, "basin_correction": {"module": "None", "reference": ""}, "directivity": {"module": "None", "reference": ""}}, "model_flags": {"no_macroseismic": false, "no_seismic": false, "no_rupture": false}, "miscellaneous": {"bias_max_dsigma": "1.5", "bias_max_mag": "7.0", "bias_max_range": "120.0", "median_dist": "False", "do_outliers": true, "outlier_deviation_level": "3.0", "outlier_max_mag": "7.0"}, "shakemap_versions": {"shakemap_revision": "4.4.6", "shakemap_revision_id": "4.4.6", "shakemap_modules_revision": "1.1.13", "esi_shakelib_revision": "1.1.13", "process_time": "2026-03-25T21:01:02Z", "map_version": 4, "map_comment": "automatic run", "map_data_history": [["2026-03-24T21:20:12Z", "ak", 1, "automatic run"], ["2026-03-24T21:22:51Z", "ak", 2, "automatic run"], ["2026-03-24T21:28:15Z", "ak", 3, "automatic run"], ["2026-03-25T21:00:56Z", "ak", 4, "automatic run"]], "map_status": "automatic"}, "site_response": {"vs30default": "760.0", "site_correction": "GMPE native"}}}