Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

WMO Standard Format

Default NWS text format in use for over 25-years. Used in SBN/NOAAPORT product streams (Channels 101-108 and 201), over EMWIN (GOES platforms), and on weather.gov.
https://www.weather.gov/tg/headef

XMPP Header wrapped WMO Standard Format

Latest format since July 2015 for text weather information, alerts and warnings via NWWS-Open Interface. Here are some notes for developers;

https://xmpp.org/extensions/xep-0131.html

Common Alert Protocol (CAP V1.2) Format
Alerts and warnings only format; available over SBN/NOAAPORT Channels 101-108 and on weather.gov.

Format https://docs.oasis-open.org/emergency/cap/v1.2/CAP-v1.2.html

NWS Source https://api.weather.gov/ (NWWS FAQ #5 for NWS Message IDs)

WARNING: CAP v1.1 should not be used to activate local EAS equipment.

NWS also has the following XML feed formats for Alerts and Warnings;

ATOM Feed
https://alerts.weather.gov/

RSS Feed
https://www.weather.gov/rss

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

NWS Formats