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{
"dataset": "WRF Severe Weather Overlays",
"version": "1.0",
"description": "Surface weather fields from 250m WRF severe weather simulations",
"domain": "d03 (250m)",
"format": ".npz (numpy compressed)",
"events": {
"enderlin_ef5": {
"event_key": "enderlin_ef5",
"event_name": "Enderlin EF5 Tornado",
"description": "Violent EF5 tornado near Enderlin, North Dakota",
"category": "tornado",
"date": "2025-06-21",
"location": "Enderlin, ND",
"domain": "d03",
"resolution_m": 250,
"grid_shape": [
800,
800
],
"n_timesteps": 360,
"times": [
"2025-06-21T01:00:00",
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],
"time_step_seconds": 61.0,
"fields": {
"t2m": {
"long_name": "2m Temperature",
"units": "degC"
},
"u10": {
"long_name": "10m U-wind",
"units": "m/s"
},
"v10": {
"long_name": "10m V-wind",
"units": "m/s"
},
"wind_speed_10m": {
"long_name": "10m Wind Speed",
"units": "m/s",
"derived": "sqrt(u10^2 + v10^2)"
},
"wind_direction_10m": {
"long_name": "10m Wind Direction",
"units": "degrees",
"derived": "atan2(-u10, -v10), meteorological convention"
},
"surface_pressure": {
"long_name": "Surface Pressure",
"units": "hPa"
},
"pblh": {
"long_name": "PBL Height",
"units": "m"
},
"hfx": {
"long_name": "Sensible Heat Flux",
"units": "W/m2"
},
"lh": {
"long_name": "Latent Heat Flux",
"units": "W/m2"
},
"rain_rate": {
"long_name": "Rain Rate",
"units": "mm/hr",
"derived": "forward difference of accumulated RAINNC"
},
"refc": {
"long_name": "Composite Reflectivity",
"units": "dBZ",
"derived": "column max of REFL_10CM"
},
"wspd10max": {
"long_name": "Max 10m Wind Speed (accumulated)",
"units": "m/s"
},
"w_up_max": {
"long_name": "Max Updraft (accumulated)",
"units": "m/s"
},
"w_dn_max": {
"long_name": "Max Downdraft (accumulated)",
"units": "m/s"
},
"updraft_helicity": {
"long_name": "Max Updraft Helicity (accumulated)",
"units": "m2/s2"
},
"hail_max": {
"long_name": "Max Hail Size (accumulated)",
"units": "mm"
}
},
"data_format": "npz",
"dtype": "float32",
"coordinate_system": "WRF Lambert Conformal, see coords.npz for XLAT/XLONG"
},
"seattle_heat_dome": {
"event_key": "seattle_heat_dome",
"event_name": "Seattle Heat Dome",
"description": "Unprecedented heat dome with all-time records across Pacific Northwest",
"category": "heat",
"date": "2021-06-28",
"location": "Seattle, WA",
"domain": "d03",
"resolution_m": 250,
"grid_shape": [
800,
800
],
"n_timesteps": 21,
"times": [
"2021-06-28T18:00:00",
"2021-06-28T18:15:00",
"2021-06-28T18:30:00",
"2021-06-28T18:45:00",
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],
"time_step_seconds": 900.0,
"fields": {
"t2m": {
"long_name": "2m Temperature",
"units": "degC"
},
"u10": {
"long_name": "10m U-wind",
"units": "m/s"
},
"v10": {
"long_name": "10m V-wind",
"units": "m/s"
},
"wind_speed_10m": {
"long_name": "10m Wind Speed",
"units": "m/s",
"derived": "sqrt(u10^2 + v10^2)"
},
"wind_direction_10m": {
"long_name": "10m Wind Direction",
"units": "degrees",
"derived": "atan2(-u10, -v10), meteorological convention"
},
"surface_pressure": {
"long_name": "Surface Pressure",
"units": "hPa"
},
"pblh": {
"long_name": "PBL Height",
"units": "m"
},
"hfx": {
"long_name": "Sensible Heat Flux",
"units": "W/m2"
},
"lh": {
"long_name": "Latent Heat Flux",
"units": "W/m2"
},
"rain_rate": {
"long_name": "Rain Rate",
"units": "mm/hr",
"derived": "forward difference of accumulated RAINNC"
},
"refc": {
"long_name": "Composite Reflectivity",
"units": "dBZ",
"derived": "column max of REFL_10CM"
},
"wspd10max": {
"long_name": "Max 10m Wind Speed (accumulated)",
"units": "m/s"
},
"w_up_max": {
"long_name": "Max Updraft (accumulated)",
"units": "m/s"
},
"w_dn_max": {
"long_name": "Max Downdraft (accumulated)",
"units": "m/s"
},
"updraft_helicity": {
"long_name": "Max Updraft Helicity (accumulated)",
"units": "m2/s2"
},
"hail_max": {
"long_name": "Max Hail Size (accumulated)",
"units": "mm"
}
},
"data_format": "npz",
"dtype": "float32",
"coordinate_system": "WRF Lambert Conformal, see coords.npz for XLAT/XLONG",
"source": "wrfout_d03 (instantaneous) + auxhist2_d03 (MAX fields)"
},
"nashville": {
"event_key": "nashville",
"event_name": "Nashville EF3 Tornado",
"description": "Deadly EF3 tornado outbreak across middle Tennessee",
"category": "tornado",
"date": "2020-03-03",
"location": "Nashville, TN",
"domain": "d03",
"resolution_m": 250,
"grid_shape": [
800,
800
],
"n_timesteps": 42,
"times": [
"2020-03-03T00:00:00",
"2020-03-03T00:15:00",
"2020-03-03T00:30:00",
"2020-03-03T00:45:00",
"2020-03-03T01:00:00",
"2020-03-03T01:15:00",
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],
"time_step_seconds": 900.0,
"fields": {
"t2m": {
"long_name": "2m Temperature",
"units": "degC"
},
"u10": {
"long_name": "10m U-wind",
"units": "m/s"
},
"v10": {
"long_name": "10m V-wind",
"units": "m/s"
},
"wind_speed_10m": {
"long_name": "10m Wind Speed",
"units": "m/s",
"derived": "sqrt(u10^2 + v10^2)"
},
"wind_direction_10m": {
"long_name": "10m Wind Direction",
"units": "degrees",
"derived": "atan2(-u10, -v10), meteorological convention"
},
"surface_pressure": {
"long_name": "Surface Pressure",
"units": "hPa"
},
"pblh": {
"long_name": "PBL Height",
"units": "m"
},
"hfx": {
"long_name": "Sensible Heat Flux",
"units": "W/m2"
},
"lh": {
"long_name": "Latent Heat Flux",
"units": "W/m2"
},
"rain_rate": {
"long_name": "Rain Rate",
"units": "mm/hr",
"derived": "forward difference of accumulated RAINNC"
}
},
"data_format": "npz",
"dtype": "float32",
"coordinate_system": "WRF Lambert Conformal, see coords.npz for XLAT/XLONG",
"source": "wrfout_d03 (15-min cadence)"
},
"michael": {
"event_key": "michael",
"event_name": "Hurricane Michael",
"description": "Category 5 hurricane landfall in Florida panhandle",
"category": "hurricane",
"date": "2018-10-10",
"location": "Panama City, FL",
"domain": "d03",
"resolution_m": 250,
"grid_shape": [
800,
800
],
"n_timesteps": 35,
"times": [
"2018-10-10T12:00:00",
"2018-10-10T12:15:00",
"2018-10-10T12:30:00",
"2018-10-10T12:45:00",
"2018-10-10T13:00:00",
"2018-10-10T13:15:00",
"2018-10-10T13:30:00",
"2018-10-10T13:45:00",
"2018-10-10T14:00:00",
"2018-10-10T14:15:00",
"2018-10-10T14:30:00",
"2018-10-10T14:45:00",
"2018-10-10T15:00:00",
"2018-10-10T15:15:00",
"2018-10-10T15:30:00",
"2018-10-10T15:45:00",
"2018-10-10T16:00:00",
"2018-10-10T16:15:00",
"2018-10-10T16:30:00",
"2018-10-10T16:45:00",
"2018-10-10T17:00:00",
"2018-10-10T17:15:00",
"2018-10-10T17:30:00",
"2018-10-10T17:45:00",
"2018-10-10T18:00:00",
"2018-10-10T18:15:00",
"2018-10-10T18:30:00",
"2018-10-10T18:45:00",
"2018-10-10T19:00:00",
"2018-10-10T19:15:00",
"2018-10-10T19:30:00",
"2018-10-10T19:45:00",
"2018-10-10T20:00:00",
"2018-10-10T20:15:00",
"2018-10-10T20:30:00"
],
"time_step_seconds": 900.0,
"fields": {
"t2m": {
"long_name": "2m Temperature",
"units": "degC"
},
"u10": {
"long_name": "10m U-wind",
"units": "m/s"
},
"v10": {
"long_name": "10m V-wind",
"units": "m/s"
},
"wind_speed_10m": {
"long_name": "10m Wind Speed",
"units": "m/s",
"derived": "sqrt(u10^2 + v10^2)"
},
"wind_direction_10m": {
"long_name": "10m Wind Direction",
"units": "degrees",
"derived": "atan2(-u10, -v10), meteorological convention"
},
"surface_pressure": {
"long_name": "Surface Pressure",
"units": "hPa"
},
"pblh": {
"long_name": "PBL Height",
"units": "m"
},
"hfx": {
"long_name": "Sensible Heat Flux",
"units": "W/m2"
},
"lh": {
"long_name": "Latent Heat Flux",
"units": "W/m2"
},
"rain_rate": {
"long_name": "Rain Rate",
"units": "mm/hr",
"derived": "forward difference of accumulated RAINNC"
}
},
"data_format": "npz",
"dtype": "float32",
"coordinate_system": "WRF Lambert Conformal, see coords.npz for XLAT/XLONG",
"source": "wrfout_d03 (15-min cadence)"
},
"mayfield": {
"event_key": "mayfield",
"event_name": "Mayfield EF4 Tornado",
"description": "Long-track EF4 tornado devastating Mayfield, KY",
"category": "tornado",
"date": "2021-12-11",
"location": "Mayfield, KY",
"domain": "d03",
"resolution_m": 250,
"grid_shape": [
800,
800
],
"n_timesteps": 22,
"times": [
"2021-12-11T03:00:00",
"2021-12-11T03:15:00",
"2021-12-11T03:30:00",
"2021-12-11T03:45:00",
"2021-12-11T04:00:00",
"2021-12-11T04:15:00",
"2021-12-11T04:30:00",
"2021-12-11T04:45:00",
"2021-12-11T05:00:00",
"2021-12-11T05:15:00",
"2021-12-11T05:30:00",
"2021-12-11T05:45:00",
"2021-12-11T06:00:00",
"2021-12-11T06:15:00",
"2021-12-11T06:30:00",
"2021-12-11T06:45:00",
"2021-12-11T07:00:00",
"2021-12-11T07:15:00",
"2021-12-11T07:30:00",
"2021-12-11T07:45:00",
"2021-12-11T08:00:00",
"2021-12-11T08:15:00"
],
"time_step_seconds": 900.0,
"fields": {
"t2m": {
"long_name": "2m Temperature",
"units": "degC"
},
"u10": {
"long_name": "10m U-wind",
"units": "m/s"
},
"v10": {
"long_name": "10m V-wind",
"units": "m/s"
},
"wind_speed_10m": {
"long_name": "10m Wind Speed",
"units": "m/s",
"derived": "sqrt(u10^2 + v10^2)"
},
"wind_direction_10m": {
"long_name": "10m Wind Direction",
"units": "degrees",
"derived": "atan2(-u10, -v10), meteorological convention"
},
"surface_pressure": {
"long_name": "Surface Pressure",
"units": "hPa"
},
"pblh": {
"long_name": "PBL Height",
"units": "m"
},
"hfx": {
"long_name": "Sensible Heat Flux",
"units": "W/m2"
},
"lh": {
"long_name": "Latent Heat Flux",
"units": "W/m2"
},
"rain_rate": {
"long_name": "Rain Rate",
"units": "mm/hr",
"derived": "forward difference of accumulated RAINNC"
},
"refc": {
"long_name": "Composite Reflectivity",
"units": "dBZ",
"derived": "column max of REFL_10CM"
},
"wspd10max": {
"long_name": "Max 10m Wind Speed (accumulated)",
"units": "m/s"
},
"w_up_max": {
"long_name": "Max Updraft (accumulated)",
"units": "m/s"
},
"w_dn_max": {
"long_name": "Max Downdraft (accumulated)",
"units": "m/s"
},
"updraft_helicity": {
"long_name": "Max Updraft Helicity (accumulated)",
"units": "m2/s2"
},
"hail_max": {
"long_name": "Max Hail Size (accumulated)",
"units": "mm"
}
},
"data_format": "npz",
"dtype": "float32",
"coordinate_system": "WRF Lambert Conformal, see coords.npz for XLAT/XLONG",
"source": "wrfout_d03 (instantaneous) + auxhist2_d03 (MAX fields)"
}
}
}