{"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"}], "weights": [0.19930000000000003, 0.8007], "name": "gmpe_a2026gssrbg_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"}], "weights": [0.19930000000000003, 0.8007], "name": "gmpe_a2026gssrbg_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"}], "weights": [0.19930000000000003, 0.8007], "name": "gmpe_a2026gssrbg_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"}], "weights": [0.19930000000000003, 0.8007], "name": "gmpe_a2026gssrbg_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"}], "weights": [0.19930000000000003, 0.8007], "name": "gmpe_a2026gssrbg_custom"}}, "input": {"event_information": {"depth": "25.007", "event_id": "a2026gssrbg", "eventsource": "AK", "netid": "AK", "eventsourcecode": "a2026gssrbg", "id": "a2026gssrbg", "productcode": "a2026gssrbg", "productsource": "ak", "producttype": "shakemap", "event_ref": "Origin", "fault_ref": "Origin", "intensity_observations": "0", "latitude": "51.5032", "longitude": "176.064", "location": "257 km (160 miles) SE of Attu Station", "magnitude": "4.5253", "origin_time": "2026-04-06T04:21:32.051618Z", "seismic_stations": "13", "src_mech": "ALL", "event_description": "257 km (160 miles) SE of Attu Station", "event_type": "ACTUAL", "origin_reviewed": "unknown"}}, "strec": {"TectonicRegion": "Subduction", "FocalMechanism": "ALL", "TensorType": "composite", "TensorSource": "composite", "KaganAngle": null, "CompositeVariability": 0.658414663580378, "NComposite": 3, "DistanceToStable": 233.8478248282177, "DistanceToActive": 62.46753808114452, "DistanceToSubduction": 0.0, "DistanceToVolcanic": 5138.639918735433, "Oceanic": false, "DistanceToOceanic": 76.87165803919886, "DistanceToContinental": 0.0, "SlabModelRegion": "", "SlabModelDepth": null, "SlabModelDepthUncertainty": null, "SlabModelDip": null, "SlabModelStrike": null, "SlabModelMaximumDepth": null, "ProbabilityActive": 0.272898931606414, "ProbabilityStable": 0.0, "ProbabilitySubduction": 0.7271010683935861, "ProbabilityVolcanic": 0.0, "ProbabilitySubductionCrustal": 0.14491124293084173, "ProbabilitySubductionInterface": 0.5821898254627443, "ProbabilitySubductionIntraslab": 0.0, "ProbabilityActiveDeep": 0.0, "ProbabilityActiveShallow": 0.272898931606414, "DistanceToBackarc": 1700.4722757977593, "ProbabilityVolcanicShallow": 0.0, "ProbabilityStableShallow": 0.0}, "output": {"ground_motions": {"PGA": {"units": "g", "bias": "0.0", "max_grid": "0.018", "max": "0.002"}, "SA(1.0)": {"units": "g", "bias": "0.0", "max_grid": "0.006", "max": "0.002"}, "PGV": {"units": "cms", "bias": "0.0", "max_grid": "0.608", "max": "0.106"}, "SA(3.0)": {"units": "g", "bias": "0.0", "max_grid": "0.0", "max": "0.0"}, "SA(0.3)": {"units": "g", "bias": "0.0", "max_grid": "0.028", "max": "0.004"}, "MMI": {"units": "intensity", "bias": "0.0", "max_grid": "3.548", "max": "2.432"}}, "map_information": {"grid_points": {"longitude": "693", "latitude": "433", "units": ""}, "grid_spacing": {"longitude": "0.0083333", "latitude": "0.0083333", "units": "degrees"}, "grid_span": {"longitude": "5.767", "latitude": "3.6", "units": "degrees"}, "min": {"longitude": "173.3", "latitude": "49.667", "units": "degrees"}, "max": {"longitude": "179.067", "latitude": "53.267", "units": "degrees"}}, "uncertainty": {"grade": "--", "mean_uncertainty_ratio": null, "total_flagged_mi": "0", "total_flagged_pgm": "0"}}, "processing": {"ground_motion_modules": {"gmpe": {"module": "gmpe_a2026gssrbg_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": "2026-04-06T07:33:54Z", "map_version": 7, "map_comment": "automatic run", "map_data_history": [["2026-04-06T04:23:56Z", "ak", 1, "automatic run"], ["2026-04-06T04:26:30Z", "ak", 2, "automatic run"], ["2026-04-06T04:28:18Z", "ak", 3, "automatic run"], ["2026-04-06T04:30:14Z", "ak", 4, "automatic run"], ["2026-04-06T04:32:11Z", "ak", 5, "automatic run"], ["2026-04-06T04:44:07Z", "ak", 6, "automatic run"], ["2026-04-06T07:33:48Z", "ak", 7, "automatic run"]], "map_status": "automatic"}, "site_response": {"vs30default": "760.0", "site_correction": "GMPE native"}}}