NWWS Message Formats

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

FORMAT	DETAIL	NWWS-OI	NWWS-PID201
WMO Standard - World Meteorological Organization Handbook No. 306	NWS standardized format used by Weather Forecast Offices (WFOs) and National Centers at product origination.	Not available.	WMO Standard Only
XMPP - eXtensible messaging and presence protocol	Current NWWS-OI XML Chatroom format used for all text weather products, alerts and warnings.	XMPP Only	Not available.
CAP v1.2 - Common Alert Protocol	Common Alert Protocol provides a digital messaging capability for specific NWS alerts and warnings only. Future implementation planned for Spring 2021.	Not available. Future implementation planned.	Not available. Future implementation planned.

FORMAT

DETAIL

NWWS-OI

NWWS-PID201

WMO Standard -
World
Meteorological
Organization
Handbook No. 306

NWS standardized format used
by Weather Forecast Offices
(WFOs) and National Centers
at product origination.

Not available.

WMO Standard Only

XMPP - eXtensible
messaging and
presence protocol

Current NWWS-OI XML Chatroom
format used for all text weather
products, alerts and warnings.

XMPP Only

Not available.

CAP v1.2 -
Common Alert
Protocol

Common Alert Protocol provides
a digital messaging capability for
specific NWS alerts and warnings
only. Future implementation
planned for Spring 2021.

Not available.
Future implementation planned.