Weather Alert

© Sarah Anne Risk

The Napa Valley Grapegrowers annual Weather Alert is a free service for NVG Grower and Vineyard Manager members as a benefit of membership.  The Weather Alert will help growers and vineyard managers in effectively planning for extreme weather events throughout the season including frost protection, irrigation strategies, preventing heat illness and exhaustion during summer season, management for rain days, and more.  NVG Grower and Vineyard Manager members may choose to receive a call or email whenever an extreme weather event is in the forecast from frost through harvest.  

Weather Alert Details

The Alert begins in March of each growing season and continues through the end of harvest.

  • FREE for NVG Grower & Vineyard Manager members only
  • Receive a county-wide alert from Erik Moldstad of Precision Forecasting only on the days when extreme weather events are expected
  • Alert is sent via email or phone
  • Choose up to 4 employees to receive the Alert – these additional participants must be employed by the NVG member
  • Option to choose the weather events that affect your vineyard operation

Weather Alert Options

Participants may chose any or all of the following weather events to receive alerts on:

  • Frost (Low Temps)
  • High Temperature (Viticulture)
  • High Temperature (Labor)
  • Other Severe Weather Events (when applicable)


CLICK HERE to register for the Weather Alert