Mountain Rain or Snow

During winter storms, tell us what is falling from the sky.

Scientists need your help to better understand winter weather. It's notoriously difficult to research winter precipitation in the mountains because it can vary over the course of minutes and across short distances. Few weather stations can accurately identify precipitation phase near freezing (rain, snow, or mixed).

Direct observations, made by people, are the most accurate way to discover how precipitation phase varies in time and space. Start reporting with the Mountain Rain or Snow app during winter storms to help improve the technologies behind precipitation phase prediction.

How to get started: 

Step 1: Sign up for text message weather alerts

Screenshot of example text messages from Mountain Rain or Snow project organizers.

Step 2: Log into the Mountain Rain or Snow web app

New users: Sign up by clicking here.

Existing users: We already made a profile for you. Set the password here.

Screenshot of the Mountain Rain or Snow web app, open to the page that is used to send observations.

Step 3: Send us observations whenever it is raining, snowing, or a wintry mix

 Sign up and put your location on the map.
Find your region's keyword, and text it to 855-909-0798.
We will send you the link to the web-based app and directions on how to get started. 

Keywords 2023-2024
How to participate for MRoS web page

Want to know more?

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Mountain Rain or Snow is a NASA-funded collaboration between
Lynker, the Desert Research Institute, and University of Nevada-Reno.

Icon representing Mountain Rain or Snow's status as a NASA partner.