Natrona County, WY
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Tuesday 07/21 12:59 PM MDT – Thursday 07/23 6:00 AM MDT
Issued by NWS Riverton WY
What
Flooding caused by excessive rainfall continues to be possible.
Where
Portions of central, north central, northwest, south central, southwest, and west central Wyoming, including the following areas, in central Wyoming, Casper Mountain, Green Mountains and Rattlesnake Range, Lander Foothills, Natrona County Lower Elevations, Owl Creek and Bridger Mountains, Southwest Bighorn Basin, Upper Wind River Basin, Wind River Basin, Wind River Mountains East and Wind River Mountains West. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County, Southeast Bighorn Basin and Southeast Johnson County. In northwest Wyoming, Absaroka Mountains, Cody Foothills, Jackson Hole, North Bighorn Basin, Teton and Gros Ventre Mountains and Yellowstone National Park. In south central Wyoming, East Sweetwater County, Flaming Gorge and Rock Springs and Green River. In southwest Wyoming, South Lincoln County. In west central Wyoming, Salt River and Wyoming Ranges, Star Valley, Upper Green River Basin and Upper Green River Basin Foothills.
When
Until late Wednesday night. The most likely period of possible flooding is Wednesday afternoon through Wednesday evening.
Impacts
Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
Additional Details
- Slow moving showers and thunderstorms and abnormally high moisture in the air can bring locally heavy rainfall that could lead to flooding. - http://www.weather.gov/safety/flood
What to Do
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Areas Impacted
- Yellowstone National Park
- Absaroka Mountains
- Cody Foothills
- North Bighorn Basin
- Southwest Bighorn Basin
- Southeast Bighorn Basin
- Owl Creek and Bridger Mountains
- Bighorn Mountains West
- Bighorn Mountains Southeast
- Northeast Johnson County
- Southeast Johnson County
- Teton and Gros Ventre Mountains
- Jackson Hole
- Wind River Mountains West
- Wind River Mountains East
- Upper Wind River Basin
- Wind River Basin
- Lander Foothills
- Green Mountains and Rattlesnake Range
- Natrona County Lower Elevations
- Casper Mountain
- Star Valley
- Salt River and Wyoming Ranges
- Upper Green River Basin Foothills
- Upper Green River Basin
- South Lincoln County
- Rock Springs and Green River
- Flaming Gorge
- East Sweetwater County
Tips to Stay Safe
A Flood Watch means the area may experience a dangerous flooding event, and being prepared may save lives and property.
- Be aware of low-lying areas along your travel routes that are most likely to flood.
- Check your home’s emergency supplies, and make sure all members of the household know your emergency plan.
- Stay tuned for local weather updates on the situation as it develops.
If a Flood Warning is issued, it means that dangerous flooding is expected or already happening.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
Briefing
From the Forecaster
Weather Story
Created by the NWS Riverton WFO
Increasing moisture will bring more numerous showers and thunderstorms today, especially in western Wyoming and in the afternoon and evening. Any storm could have heavy rain and could cause local flooding.
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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