Heavy lake effect snow, gusty winds, and localized blizzard conditions will persist through Thanksgiving near and downwind of the Great Lakes. Rain and mountain snow are forecast for the Pacific Northwest. Confidence is increasing for another winter storm to develop over the northern and central Rockies Friday and track across the central Plains through the Midwest and Great Lakes this weekend. Read More >
( when T1 = Z and the CCCC = KWBZ)
( A DRAFT U.S. National Practice Table )
Instructions for the proper application of the Geographical "TILE" number designator - A two character field of the heading.
1. The designator specified in this table should be used to the greatest extent possible to indicate the geographical high resolution grid tile number of the data contained within the geographical area as specified by the grid squares defined by the producing center of the GRIB bulletin.
2. Where the geographical tile number for the area of the data does not correspond exactly with the designator, the number designator for the area most approximating that area of the data may be used. The exact area of coverage will be available within the GRIB Product Definition Section (PDS) of the bulletin.
| Designator | Geographical Area Tile Number | NCEP Model |
| AA - AW | 01 - 24 CONUS 20 km tiles | meso-Eta |
| AY - AZ | unassigned | |
| BA - BW | 01 - 24 CONUS 20 km tiles | RUC |
| BY - BZ | unassigned | |
| CA - CW | unassigned | |
| CY - CZ | unassigned | |
| DA - DZ | unassigned | |
| EA - EZ | unassigned | |
| FA - FZ | unassigned | |
| GA - GZ | unassigned | |
| HA - KR | 01 - 96 CONUS 10 km tiles | meso-Eta |
| KS - KZ | 01 - 08 Alaska 20 km tiles | RUC |
| LA - OR | 01 - 96 CONUS 10 km tiles | RUC |
| OS - OZ | 01 - 08 Hawaii 20 km tiles | RUC |
| PA - QZ | unassigned | |
| RA - RF | 01 - 06 CONUS 40 km tiles | meso-Eta |
| RG - RL | 01 - 06 CONUS 40 km tiles | RUC |
| RM - RR | 01 - 06 Alaska 40 km tiles | meso-Eta |
| RS - RX | 01 - 06 Alaska 40 km tiles | RUC |
| RY - RZ | unassigned | |
| SA - SF | 01 - 06 Hawaii 40 km tiles | meso-Eta |
| SG - SL | 01 - 06 Hawaii 40 km tiles | RUC |
| SM - ZZ | unassigned |
