The U.S. government is closed. However, because the information this website provides is necessary to protect life and property, this site will be updated and maintained during the federal government shutdown. For the latest forecasts and weather information, visit weather.gov. To learn more, visit commerce.gov/news/blog.
NCEP distributes output from the High Resolution Rapid Refresh (HRRR) model via NOAAPORT and the SBN with the following WMO headers:
T1T2A1A2ii CCCC
where:
CCCC = KWBY
T1 = Y (GRIB2 Products)
| T2= | A - total cloud | A - dew point temperature |
| A - wind speed at 10 m above ground | ||
| D - percent of frozen precipitation | E - total precipitation | |
| F - precipitable water | H - height | |
| H - height of cloud top | H - lifted condensation level | |
| H - planetary boundary layer height | H - model terrain height | |
| K - surface visibility | ||
| M - categorical precipitation types (snow, ice pellets, freezing rain and rain) | N - wind gust speed | |
| O - vertical velocity | O - mean vertical velocity | |
| P - pressure mean sea level | P - surface pressure | |
| P - Pressure of level from which parcel was lifted | ||
| Q - best 4 layers lifted index | ||
| S - Snow depth | S - Water equivalent accumulated snow depth | |
| T - temperature | U - U component of wind | |
| U - U component of wind shear - Low Level | U - U component of wind shear - Deep Layer | |
| V - V component of wind | V - V component of wind shear - Low Level | |
| V - V component of wind shear - Deep Layer | W - CAPE | |
| X - surface lifted index | Y - CIN | |
| Z - radar reflectivity | Z - maximum radar reflectivity | |
| Z - composite radar reflectivity | Z - echo top | |
| Z - radar vertically-integrated liquid water | Z - high-level cloud fraction | |
| Z - mid-level cloud fraction | Z - low-level cloud fraction | |
| Z - lightning | Z - storm relative helicty | |
| Z - maximum of updraft helicity over layer 2 to 5km AGL | Z - maximum updraft velocity | |
| Z - maximum downdraft velocity | Z - total column integrate graupel |
| A1 = | C - 2.5 km NDFD grid over CONUS (Lambert Conformal) |
A2 specifies the forecast time (ranging from 00 to 15 hours)
| A= 00, B=01, C=02, D=03, E=04, F=05, G=06, H=07, I=08, J=09, K=10, L=11, M=12, Z=13, Z=14, Z=15 |
| ii = | 99 - 1000 mb | 98 - surface |
| 98 - 10m above ground | 98 - 80m above ground | |
| 97 - level of the tropopause | 96 - level of maximum wind | |
| 92 - 925 mb | 89 - any parameter reduced to see level | |
| 86 - boundary layer | 85 - 850 mb | |
| 70 - 700 mb | 50 - 500 mb | |
| 01 - refer to grib PDS | 00 - entire atmosphere |
