A look at atmospheric rivers of 2017 and how they fit into the context of past atmospheric rivers.

Contents:

• Recap of precipitation and temperature forecasts and skill analysis
• Recent precipitation and temperature forecasts and skill analysis
• Initial skill analysis of S2S products based on NMME forecasts

Summary

This document summarizes information from the Jan. 23, 2017 CA-NV Drought Early Warning System Drought and Climate Outlook Webinar, including discussion of current conditions, snow pack, flooding in times of drought, and a look ahead. The webinars, held every other month, are designed to provide stakeholders and other interested parties in the region with timely information on current drought status and associated impacts, as well as a preview of current and developing climatic events (i.e. El Niño and La Niña).

Significant events, regional overview, and impacts for the Western Region, Sept.-Nov. 2016. Includes Regional outlook for January, February and March 2017.

Summary of conditions and climate outlook for California and Nevada in December 2016, as presented during Dec. 2 webinar.

Percent of normal precipitation from Oct. 1- Nov. 28; discussion of atmospheric rivers; discussion of La Niña; comparison of this year’s precipitation to climatic record.

Summary:

Summary:

• ENSO Alert System Status: La Niña Advisory La Niña conditions are present.
• Equatorial sea surface temperatures (SST) are below average in the central and east-central Pacific Ocean.
• La Niña is slightly favored to persist (~55% chance) through winter 2016-17.

What is NIDIS; what is a Drought Early Warning System (DEWS); what is the Californai-Nevada Climate Applications program (CNAP); webinar agenda.

In September and October 2016 the National Integrated Drought Information System (NIDIS), the California Nevada Climate Applications Program (CNAP), the Desert Research Institute (DRI), the Western Regional Climate Center (WRCC) and other partners held a series of regional Drought and Climate Outlooks throughout California. These full-day meetings provided stakeholders and other interested parties with timely information on current drought status, as well as a preview of recent, current and developing climatic events (i.e. El Niño and La Niña) and ocean conditions.