National Weather Service United States Department of Commerce

Arctic Cold Front Impacting the Great Lakes into the Northeast

A powerful Arctic cold front will sweep across the Great Lakes today and into the Northeast early Thursday. Expect brief, intense bursts of heavy snowfall and gusty winds. Widespread strong winds will spread from the Northern Plains to the Great Lakes today and reach the Central Appalachians, Mid-Atlantic, and Northeast by Thursday, where some blizzard conditions are expected in the Appalachians. Read More >

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Table C9

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Table C9

Geographical-Tile Number designator T2 A1

( 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