Multi-Radar Multi-Sensor mosaics and derived fields covering CONUS — reflectivity, hail, rotation, and QPE products.

• MergedBaseReflectivityQC

  MergedBaseReflectivityQC

  Quality-controlled mosaic of base reflectivity from contributing radars, blended into a seamless CONUS field.

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• ReflectivityAtLowestAltitude

  ReflectivityAtLowestAltitude

  Reflectivity sampled near the lowest available altitude above ground — useful for surface precipitation and storm structure near the ground.

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• MergedReflectivityComposite

  MergedReflectivityComposite

  Column-maximum composite reflectivity mosaic across the MRMS domain.

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• MergedReflectivityQComposite

  MergedReflectivityQComposite

  Quality-controlled composite reflectivity mosaic emphasizing reliable returns.

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• MergedReflectivityQC (by level)

  MergedReflectivityQC_[level]

  Quality-controlled reflectivity mosaics on fixed height levels (multiple altitude products under one family).

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• EchoTop_18

  EchoTop_18

  Height of the 18 dBZ echo top — approximates storm top / convective depth.

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• EchoTop_30

  EchoTop_30

  Height of the 30 dBZ echo top for stronger convective cores.

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• EchoTop_50

  EchoTop_50

  Height of the 50 dBZ echo top for intense convective cores.

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• EchoTop_60

  EchoTop_60

  Height of the 60 dBZ echo top for extreme reflectivity aloft.

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• VIL

  VIL

  Vertically Integrated Liquid — liquid-water content estimate through the column from reflectivity.

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• VII

  VII

  Vertically Integrated Ice — ice-water content estimate through the column from reflectivity.

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• Heightof50dBZ

  Heightof50dBZ

  Height of the 50 dBZ contour — indicates how high intense reflectivity extends in the storm.

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• ReflectivityAt0C

  ReflectivityAt0C

  Reflectivity at the 0 °C environmental height (melting level).

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• ReflectivityAt-10C

  ReflectivityAt-10C

  Reflectivity at the −10 °C environmental height.

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• ReflectivityAt-20C

  ReflectivityAt-20C

  Reflectivity at the −20 °C environmental height.

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• MESH

  MESH

  Maximum Expected Size of Hail — instantaneous MESH estimate from the MRMS hail algorithm.

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• MESH_Max_30min

  MESH_Max_30min

  Maximum MESH over a rolling 30-minute window — useful for hail swath tracking.

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• SHI

  SHI

  Severe Hail Index — intermediate hail-severity field used by MESH algorithms.

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• POSH

  POSH

  Probability of Severe Hail — likelihood that hail meets severe size criteria.

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• MergedAzShear0to2kmAGL

  MergedAzShear0to2kmAGL

  Merged azimuthal shear in the 0–2 km AGL layer — low-level rotation / shear detection.

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• MergedAzShear3to6kmAGL

  MergedAzShear3to6kmAGL

  Merged azimuthal shear in the 3–6 km AGL layer — mid-level rotation / shear detection.

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• RotationTrack30min

  RotationTrack30min

  Rotation track accumulation over 30 minutes from azimuthal shear.

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• RotationTrack60min

  RotationTrack60min

  Rotation track accumulation over 60 minutes.

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• RotationTrack120min

  RotationTrack120min

  Rotation track accumulation over 120 minutes.

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• RotationTrack360min

  RotationTrack360min

  Rotation track accumulation over 360 minutes (6 hours).

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• RotationTrack1440min

  RotationTrack1440min

  Rotation track accumulation over 1440 minutes (24 hours).

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• RotationTrackML30min

  RotationTrackML30min

  Machine-learning rotation track accumulation over 30 minutes.

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• RotationTrackML60min

  RotationTrackML60min

  Machine-learning rotation track accumulation over 60 minutes.

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• RotationTrackML120min

  RotationTrackML120min

  Machine-learning rotation track accumulation over 120 minutes.

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• RotationTrackML360min

  RotationTrackML360min

  Machine-learning rotation track accumulation over 360 minutes.

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• RotationTrackML1440min

  RotationTrackML1440min

  Machine-learning rotation track accumulation over 1440 minutes (24 hours).

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• PrecipRate

  PrecipRate

  Instantaneous precipitation rate derived from MRMS radar and multi-sensor inputs.

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• RadarOnly_QPE_15M

  RadarOnly_QPE_15M

  Radar-only quantitative precipitation estimate for the last 15 minutes.

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• RadarOnly_QPE_01H

  RadarOnly_QPE_01H

  Radar-only QPE accumulation for 1 hour.

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• RadarOnly_QPE_03H

  RadarOnly_QPE_03H

  Radar-only QPE accumulation for 3 hours.

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• RadarOnly_QPE_06H

  RadarOnly_QPE_06H

  Radar-only QPE accumulation for 6 hours.

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• RadarOnly_QPE_12H

  RadarOnly_QPE_12H

  Radar-only QPE accumulation for 12 hours.

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• RadarOnly_QPE_24H

  RadarOnly_QPE_24H

  Radar-only QPE accumulation for 24 hours.

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• RadarOnly_QPE_48H

  RadarOnly_QPE_48H

  Radar-only QPE accumulation for 48 hours.

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• RadarOnly_QPE_72H

  RadarOnly_QPE_72H

  Radar-only QPE accumulation for 72 hours.

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• MultiSensor_QPE_01H_Pass1

  MultiSensor_QPE_01H_Pass1

  Multi-sensor 1-hour QPE (Pass 1) blending radar with gauge/model constraints.

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• MultiSensor_QPE_01H_Pass2

  MultiSensor_QPE_01H_Pass2

  Multi-sensor 1-hour QPE (Pass 2) with additional quality control.

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• MultiSensor_QPE_03H_Pass1

  MultiSensor_QPE_03H_Pass1

  Multi-sensor 3-hour QPE (Pass 1).

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• MultiSensor_QPE_03H_Pass2

  MultiSensor_QPE_03H_Pass2

  Multi-sensor 3-hour QPE (Pass 2).

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• MultiSensor_QPE_06H_Pass1

  MultiSensor_QPE_06H_Pass1

  Multi-sensor 6-hour QPE (Pass 1).

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• MultiSensor_QPE_06H_Pass2

  MultiSensor_QPE_06H_Pass2

  Multi-sensor 6-hour QPE (Pass 2).

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• MultiSensor_QPE_12H_Pass1

  MultiSensor_QPE_12H_Pass1

  Multi-sensor 12-hour QPE (Pass 1).

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• MultiSensor_QPE_12H_Pass2

  MultiSensor_QPE_12H_Pass2

  Multi-sensor 12-hour QPE (Pass 2).

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• MultiSensor_QPE_24H_Pass1

  MultiSensor_QPE_24H_Pass1

  Multi-sensor 24-hour QPE (Pass 1).

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• MultiSensor_QPE_24H_Pass2

  MultiSensor_QPE_24H_Pass2

  Multi-sensor 24-hour QPE (Pass 2).

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• MultiSensor_QPE_48H_Pass1

  MultiSensor_QPE_48H_Pass1

  Multi-sensor 48-hour QPE (Pass 1).

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• MultiSensor_QPE_48H_Pass2

  MultiSensor_QPE_48H_Pass2

  Multi-sensor 48-hour QPE (Pass 2).

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• MultiSensor_QPE_72H_Pass1

  MultiSensor_QPE_72H_Pass1

  Multi-sensor 72-hour QPE (Pass 1).

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• MultiSensor_QPE_72H_Pass2

  MultiSensor_QPE_72H_Pass2

  Multi-sensor 72-hour QPE (Pass 2).

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• RadarQualityIndex

  RadarQualityIndex

  Index describing radar data quality / coverage reliability across the mosaic domain.

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• RadarAccumulationQualityIndex

  RadarAccumulationQualityIndex

  Quality index for radar-based precipitation accumulations.

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• PrecipFlag

  PrecipFlag

  Precipitation-type / precipitation-flag classification derived from MRMS algorithms.

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• SeamlessHSR

  SeamlessHSR

  Seamless Hybrid Scan Reflectivity — optimized near-surface reflectivity for precipitation applications.

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• SeamlessHSRHeight

  SeamlessHSRHeight

  Height of the Seamless HSR sampling surface above ground.

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• MergedZDR (by level)

  MergedZdr_[level]

  Merged differential reflectivity (ZDR) mosaics on fixed height levels.

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• MergedRhoHV (by level)

  MergedRhoHV_[level]

  Merged correlation coefficient (ρHV) mosaics on fixed height levels.

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• Model_0degC_Height

  Model_0degC_Height

  Model-derived height of the 0 °C isotherm.

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• Model_SurfaceTemp

  Model_SurfaceTemp

  Model-derived surface temperature field used by MRMS algorithms.

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• Model_WetBulbTemp

  Model_WetBulbTemp

  Model-derived wet-bulb temperature field.

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• WarmRainProbability

  WarmRainProbability

  Probability of warm-rain processes contributing to precipitation.

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WSR-88D Level II and Level III products for site-based reflectivity, velocity, dual-pol, and precipitation fields.

• Level II Reflectivity

  Level II Reflectivity

  WSR-88D Level II base reflectivity — full-resolution polar volume reflectivity data.

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• Level II Velocity

  Level II Velocity

  WSR-88D Level II base radial velocity — Doppler velocity for wind and rotation analysis.

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• Level II ZDR

  Level II ZDR

  WSR-88D Level II differential reflectivity (ZDR) from dual-polarization volume data.

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• Level II CC

  Level II CC

  WSR-88D Level II correlation coefficient (CC / ρHV) from dual-polarization volume data.

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• Level II KDP

  Level II KDP

  WSR-88D Level II specific differential phase (KDP) from dual-polarization volume data.

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• Level III Digital Base Reflectivity

  Level III Digital Base Reflectivity

  Level III digital base reflectivity product for operational display and automated ingest.

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• Level III Digital Base Velocity

  Level III Digital Base Velocity

  Level III digital base velocity product for operational display and automated ingest.

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• Storm Relative Velocity

  Storm Relative Velocity

  Level III storm-relative velocity — radial velocity with storm motion removed.

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• Composite Reflectivity

  Composite Reflectivity

  Level III composite reflectivity — column-maximum reflectivity for a radar site.

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• Enhanced Echo Tops

  Enhanced Echo Tops

  Level III enhanced echo tops — storm-top height estimates from reflectivity.

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• Digital VIL

  Digital VIL

  Level III digital vertically integrated liquid for a radar site.

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• Hydrometeor Classification

  Hydrometeor Classification

  Level III hydrometeor classification — dual-pol particle-type categories.

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• Digital Precipitation Rate

  Digital Precipitation Rate

  Level III digital instantaneous precipitation rate.

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• Digital One-Hour Precipitation

  Digital One-Hour Precipitation

  Level III digital one-hour precipitation accumulation.

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• Digital Storm Total Precipitation

  Digital Storm Total Precipitation

  Level III digital storm-total precipitation accumulation.

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