# 47 52 49 42 — File format magic numbers

For 47 52 49 42, offset is 47; extension is grib grib2; format is Gridded data (commonly weather observations or forecasts) in the WMO GRIB or GRIB2 format, verified against its source on 2026-08-03.

- **Hex signature:** 47 52 49 42
- **Offset:** 47
- **Extension:** grib grib2
- **Format:** Gridded data (commonly weather observations or forecasts) in the WMO GRIB or GRIB2 format

## What the source says

> | 0 | drc | 3D model compressed with Google Draco [ 88 ] | 47 52 49 42 | GRIB | 0 | grib grib2 | Gridded data (commonly weather observations or forecasts) in the <https://en.wikipedia.org/wiki/World_Meteorological_Organization> WMO <https://en.wikipedia.org/wiki/GRIB> GRIB or <https://en.wikipedia.org/wiki/GRIB2?action=edit&redlink=1> GRIB2 format [ 89 ] |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).