GribStream

HRRR Sub-hourly Surface Fields (CONUS)

Codice GribStream: hrrrsubh

Descrizione

HRRR Sub-hourly espone campi di superficie ad alta frequenza del modello NOAA/NCEP High-Resolution Rapid Refresh. È pensato per decisioni in cui i cambiamenti dentro la stessa ora contano davvero.

Il dataset è una selezione mirata della famiglia di prodotti HRRR wrfsubhf: orari di validità ogni 15 minuti fino a 18 h. È utile quando un valore orario nasconderebbe una rampa, un fronte o un segnale superficiale di breve durata.

I casi tipici includono mercati elettrici, rampe eoliche e solari, previsione del carico, aviazione con vento, base delle nubi e visibilità, e meteo di mesoscala che cambia rapidamente vicino alla superficie.

Per l'archivio HRRR orario completo, più campi e orizzonti più lunghi, usa HRRR. Per campi di analisi vicino alla superficie invece di orari di validità della previsione, confronta con RTMA Rapid Update.

Dettagli

Dataset correlati

Parametri

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Fai clic su un parametro per vedere le varianti in una tabella compatta con selettori JSON pronti da copiare. Codici, livelli e valori dei selettori restano esattamente come li espone l'API.

APCP –Accumulated Precipitation (kg/m^2)
1 variant
NOAA GRIB2 Table 4.2-0-1

Accumulated precipitation represents the total water-equivalent amount of rain and snow during the output period. It is a primary field for hydrologic impacts and event totals.

  • Units: kg/m^2.
  • Use with the model time interval to interpret totals and compare to gauges.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"APCP","level":"surface","info":""}
CFRZR –Categorical Freezing Rain (flag)
1 variant
NOAA GRIB2 Table 4.2-0-1

Categorical indicator of freezing rain occurrence at the surface during the output period.

  • Units: flag.
  • Useful as a mask for icing or glaze hazards.
NOAA GRIB2 Table 4.222
Source
0
No
1
Yes
255
Missing
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"CFRZR","level":"surface","info":""}
CICEP –Categorical Ice Pellets (flag)
1 variant
NOAA GRIB2 Table 4.2-0-1

Categorical indicator of ice pellet (sleet) occurrence at the surface during the output period.

  • Units: flag.
  • Use with precipitation fields to gauge intensity.
NOAA GRIB2 Table 4.222
Source
0
No
1
Yes
255
Missing
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"CICEP","level":"surface","info":""}
CPOFP –Percent Frozen Precipitation (percent)
1 variant
NOAA GRIB2 Table 4.2-0-1

Percent frozen precipitation indicates the fraction of total precipitation that is falling in frozen form. It helps distinguish mixed-phase and winter precipitation impacts.

  • Units: percent.
  • Higher values indicate a larger frozen contribution to the total precipitation.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"CPOFP","level":"surface","info":""}
CRAIN –Categorical Rain (flag)
1 variant
NOAA GRIB2 Table 4.2-0-1

Categorical indicator of rain occurrence at the surface during the output period. Useful as a yes/no mask for rain.

  • Units: flag.
  • Use with accumulation or rate fields for intensity.
NOAA GRIB2 Table 4.222
Source
0
No
1
Yes
255
Missing
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"CRAIN","level":"surface","info":""}
CSNOW –Categorical Snow (flag)
1 variant
NOAA GRIB2 Table 4.2-0-1

Categorical indicator of snow occurrence at the surface during the output period.

  • Units: flag.
  • Use alongside snowfall/snow-water-equivalent fields.
NOAA GRIB2 Table 4.222
Source
0
No
1
Yes
255
Missing
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"CSNOW","level":"surface","info":""}
DLWRF –Downward Longwave Radiation Flux (W/m^2)
1 variant
NOAA GRIB2 Table 4.2-0-5

Downward longwave (thermal) flux represents incoming energy at the surface. It is a key driver of surface heating and cooling.

  • Units: W/m^2.
  • Shortwave affects surface heating; longwave affects radiative cooling.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"DLWRF","level":"surface","info":""}
DPT –Dew Point Temperature (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

Dew point temperature is the temperature at which the air becomes saturated. It is a direct measure of moisture content.

  • Units: K.
  • When dew point is close to air temperature, fog or low cloud potential increases.
Level Info Horizon Introduced Selector
2 m above ground 0m-18h 2026-02-04
{"name":"DPT","level":"2 m above ground","info":""}
DSWRF –Downward Short-Wave Radiation Flux (W/m^2)
1 variant
NOAA GRIB2 Table 4.2-0-4

Downward radiative flux represents incoming energy at the surface. It is a key driver of surface heating and cooling.

  • Units: W/m^2.
  • Shortwave affects surface heating; longwave affects radiative cooling.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"DSWRF","level":"surface","info":""}
FROZR –Freezing Rain Accumulation (kg/m^2)
1 variant
NOAA GRIB2 Table 4.2-0-1

Freezing rain accumulation is the water-equivalent amount of freezing rain during the period. It relates directly to ice accretion risk.

  • Units: kg/m^2.
  • Accumulations represent water-equivalent depth over the output interval; rates describe intensity.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"FROZR","level":"surface","info":""}
GUST –Wind Speed (Gust) (m/s)
1 variant
NOAA GRIB2 Table 4.2-0-2

Wind gust is the peak short-duration wind speed. It captures brief, hazardous bursts that can exceed sustained winds.

  • Units: m/s.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"GUST","level":"surface","info":""}
HGT –Geopotential Height (gpm)
4 variants
NOAA GRIB2 Table 4.2-0-3

Geopotential height is the altitude of a pressure surface in the atmosphere. It is the primary field for identifying ridges, troughs, and large‑scale flow patterns.

  • Units: gpm.
Level Info Horizon Introduced Selector
cloud base 0m-18h 2026-02-04
{"name":"HGT","level":"cloud base","info":""}
cloud ceiling 0m-18h 2026-02-04
{"name":"HGT","level":"cloud ceiling","info":""}
cloud top 0m-18h 2026-02-04
{"name":"HGT","level":"cloud top","info":""}
surface 0m-18h 2026-02-04
{"name":"HGT","level":"surface","info":""}
PRATE –Precipitation Rate (kg/(m^2 s))
1 variant
NOAA GRIB2 Table 4.2-0-1

Precipitation rate is the total intensity of precipitation over the period. It combines convective and stratiform contributions.

  • Units: kg/(m^2 s).
  • Accumulations represent water-equivalent depth over the output interval; rates describe intensity.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"PRATE","level":"surface","info":""}
PRES –Pressure (Pa)
1 variant
NOAA GRIB2 Table 4.2-0-3

Pressure is the atmospheric pressure at the specified level. It is a fundamental mass-field variable for dynamics and thermodynamics.

  • Units: Pa.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"PRES","level":"surface","info":""}
REFC –Composite Reflectivity (dBZ)
1 variant
NOAA GRIB2 Table 4.2-0-19

Composite reflectivity is the maximum reflectivity in the column. It is a standard radar‑style field for identifying convective cores and precipitation intensity.

  • Units: dBZ.
Level Info Horizon Introduced Selector
entire atmosphere 0m-18h 2026-02-04
{"name":"REFC","level":"entire atmosphere","info":""}
REFD –Reflectivity (dBZ)
2 variants
NOAA GRIB2 Table 4.2-0-19

Reflectivity is a radar‑style measure of hydrometeor concentration at a given level. Higher values generally correspond to heavier precipitation.

  • Units: dBZ.
Level Info Horizon Introduced Selector
1000 m above ground 0m-18h 2026-02-04
{"name":"REFD","level":"1000 m above ground","info":""}
4000 m above ground 0m-18h 2026-02-04
{"name":"REFD","level":"4000 m above ground","info":""}
RETOP –Radar Echo Top Height (m)
1 variant
NOAA GRIB2 Table 4.2-0-3

Echo top height is the altitude of the highest reflectivity in the column. It is a proxy for storm depth and convective vigor.

  • Units: m.
Level Info Horizon Introduced Selector
cloud top 0m-18h 2026-02-04
{"name":"RETOP","level":"cloud top","info":""}
SBT113 –Simulated Brightness Temperature for GOES 11, Channel 3 (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

Simulated brightness temperature for GOES-11 channel 3 represents modeled radiance converted to an equivalent blackbody temperature. It supports satellite comparison and cloud diagnostics.

  • Units: K.
Level Info Horizon Introduced Selector
top of atmosphere 0m-18h 2026-02-04
{"name":"SBT113","level":"top of atmosphere","info":""}
SBT114 –Simulated Brightness Temperature for GOES 11, Channel 4 (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

Simulated brightness temperature for GOES-11 channel 4 represents modeled radiance converted to an equivalent blackbody temperature. It supports satellite comparison and cloud diagnostics.

  • Units: K.
Level Info Horizon Introduced Selector
top of atmosphere 0m-18h 2026-02-04
{"name":"SBT114","level":"top of atmosphere","info":""}
SBT123 –Simulated Brightness Temperature for GOES 12, Channel 3 (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

Simulated brightness temperature for GOES-12 channel 3 represents modeled radiance converted to an equivalent blackbody temperature. It supports satellite comparison and cloud diagnostics.

  • Units: K.
Level Info Horizon Introduced Selector
top of atmosphere 0m-18h 2026-02-04
{"name":"SBT123","level":"top of atmosphere","info":""}
SBT124 –Simulated Brightness Temperature for GOES 12, Channel 4 (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

Simulated brightness temperature for GOES-12 channel 4 represents modeled radiance converted to an equivalent blackbody temperature. It supports satellite comparison and cloud diagnostics.

  • Units: K.
Level Info Horizon Introduced Selector
top of atmosphere 0m-18h 2026-02-04
{"name":"SBT124","level":"top of atmosphere","info":""}
SPFH –Specific Humidity (kg/kg)
1 variant
NOAA GRIB2 Table 4.2-0-1

Specific humidity is the mass of water vapor per mass of air at the specified level. It is central to moisture transport.

  • Units: kg/kg.
  • Higher values indicate more atmospheric moisture and greater cloud or precip potential.
Level Info Horizon Introduced Selector
2 m above ground 0m-18h 2026-02-04
{"name":"SPFH","level":"2 m above ground","info":""}
TMP –Temperature (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

Air temperature is the thermal state of the atmosphere at the specified level. It influences density, stability, and energy exchange.

  • Units: K.
Level Info Horizon Introduced Selector
2 m above ground 0m-18h 2026-02-04
{"name":"TMP","level":"2 m above ground","info":""}
UGRD –U-Component of Wind (m/s)
2 variants
NOAA GRIB2 Table 4.2-0-2

U‑component of wind is the east‑west component of the horizontal wind. Combine with v for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
10 m above ground 0m-18h 2026-02-04
{"name":"UGRD","level":"10 m above ground","info":""}
80 m above ground 0m-18h 2026-02-04
{"name":"UGRD","level":"80 m above ground","info":""}
ULWRF –Upward Longwave Radiation Flux (W/m^2)
2 variants
NOAA GRIB2 Table 4.2-0-5

Upward longwave (thermal) flux represents outgoing energy at the surface. It is a key driver of surface heating and cooling.

  • Units: W/m^2.
  • Shortwave affects surface heating; longwave affects radiative cooling.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"ULWRF","level":"surface","info":""}
top of atmosphere 0m-18h 2026-02-04
{"name":"ULWRF","level":"top of atmosphere","info":""}
USWRF –Upward Short-Wave Radiation Flux (W/m^2)
2 variants
NOAA GRIB2 Table 4.2-0-4

Upward radiative flux represents outgoing energy at the surface. It is a key driver of surface heating and cooling.

  • Units: W/m^2.
  • Shortwave affects surface heating; longwave affects radiative cooling.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"USWRF","level":"surface","info":""}
top of atmosphere 0m-18h 2026-02-04
{"name":"USWRF","level":"top of atmosphere","info":""}
VBDSF –Visible Beam Downward Solar Flux (W m-2)
1 variant
NOAA GRIB2 Table 4.2-0-4

Visible beam downward solar flux is the direct visible sunlight at the surface. It is important for illumination and solar energy.

  • Units: W m-2.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"VBDSF","level":"surface","info":""}
VDDSF –Visible Diffuse Downward Solar Flux (W m-2)
1 variant
NOAA GRIB2 Table 4.2-0-4

Visible diffuse downward solar flux is the scattered visible light at the surface. It increases under clouds or aerosol loading.

  • Units: W m-2.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"VDDSF","level":"surface","info":""}
VGRD –V-Component of Wind (m/s)
2 variants
NOAA GRIB2 Table 4.2-0-2

V‑component of wind is the north‑south component of the horizontal wind. Combine with u for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
10 m above ground 0m-18h 2026-02-04
{"name":"VGRD","level":"10 m above ground","info":""}
80 m above ground 0m-18h 2026-02-04
{"name":"VGRD","level":"80 m above ground","info":""}
VIL –Vertically-Integrated Liquid Water (kg/m^2)
1 variant
NOAA GRIB2 Table 4.2-0-1

Vertically‑integrated liquid water is the total column liquid water content. It is used as a proxy for precipitation intensity and hail potential.

  • Units: kg/m^2.
Level Info Horizon Introduced Selector
entire atmosphere 0m-18h 2026-02-04
{"name":"VIL","level":"entire atmosphere","info":""}
VIS –Visibility (m)
1 variant
NOAA GRIB2 Table 4.2-0-7

Horizontal visibility at the surface. Lower values indicate reduced visibility due to fog, precipitation, or aerosols.

  • Units: m.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"VIS","level":"surface","info":""}
WEASD –Water Equivalent of Accumulated Snow Depth (kg/m^2)
1 variant
NOAA GRIB2 Table 4.2-0-1

Snow water equivalent (SWE) is the total liquid water stored in the snowpack. It integrates depth and density of existing snow.

  • Units: kg/m^2.
  • Accumulations represent water-equivalent depth over the output interval; rates describe intensity.
Level Info Horizon Introduced Selector
surface 0m-18h 2026-02-04
{"name":"WEASD","level":"surface","info":""}
WIND –Wind Speed (m/s)
1 variant
NOAA GRIB2 Table 4.2-0-2

Wind speed is the magnitude of the horizontal wind at the specified level. It is used for transport, mixing, and hazards.

  • Units: m/s.
Level Info Horizon Introduced Selector
10 m above ground 0m-18h 2026-02-04
{"name":"WIND","level":"10 m above ground","info":""}

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