Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

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2024 Annual Climate Summary

Published 2025-01-02

This article provides a 2024 Annual Climate Summary for northeastern Wyoming and western South Dakota, including annual top tens and monthly records.

We are Soliciting Comments on the Discontinuation of the Regional Temperature and Precipitation (RTP) Product

Published 2024-10-02

We are Soliciting Comments on the Discontinuation of the Regional Temperature and Precipitation (RTP) Product. Comments can be submitted until November 2, 2024.

Leap Day Climate Information

Published 2024-02-27

This page provides an overview of the weather conditions on prior Leap Days across northeastern Wyoming and western South Dakota.

2023 Meteorological Summer Photography Contest Winner

Published 2023-09-14

Attend a virtual severe weather safety program

Published 2023-03-26

Looking back at the Northern Black Hills Blizzard of 1998

Published 2023-02-24

Virtual Severe Weather Safety Presentations

Published 2020-05-27

Are you Weather-Ready? We're hosting two virtual severe weather safety talks later this week that will discuss what do to before, during, and after severe weather strikes. Check our social media feeds 20 minutes prior to the scheduled times for a link!