Active Weather for the West, Warming in the East

The potential for heavy snow at higher elevations in the western U.S. will continue for many spots through the weekend. In the meantime, the eastern half of the continental U.S. will transition to above normal temperatures ahead of a pair of cold fronts next week that will bring readings back to closer to normal as we approach Thanksgiving Day. Read More >

Communication Identifier Definition References

These references list the defined entries for the various parts of NWS Communication Identifiers including the WMO heading and AWIPS Identifier.

NCEP GRIB products can be defined by using Office Note 388 (ON388).

Updated	Title/Description
June 20, 2024	CID XR-00 Message Scheme - NWS Communications Identifiers
	Establishes documents where specific information will be found
May 18, 2023	CID XR-01 Message Scheme - WMO Meteorological Bulletins CCCC
	WMO Operational Information Service (OIS)
June 01, 2023	CID XR-04 Cat X-ref by NNN - NWS Communications Identifiers
	Product category/WMO heading cross-reference sorted by product category (NNN)
June 01, 2023	CID XR-05 Cat X-ref by TT - NWS Communications Identifiers
	Product Category WMO heading cross-reference sorted by T₁T₂ of the WMO heading
April 24, 2018	CID XR-06 ii vs State - NWS Communications Identifiers
	For the second i of the ii group, ii vs State Cross-Reference by geographic areas
Aug 19, 2024	CID XR-07 Center Identifiers List - NWS Communications Identifiers
	Center/national identifiers by CCCC
Dec 19, 2018	CID XR-08 CCCC Identifiers List - NWS Communications Identifiers
	NWS site identifiers (CCCC) list
Sep 18, 2013	CID XR-09 CCC Identifiers List - NWS Communications Identifiers
	NWS site identifiers (CCC NODES) list