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May 16 CO/WY Winter Storm Event
CLOSED WINTER CO WY
Started 2026-05-16 11:52 UTC Ended 2026-05-19 04:41 UTC 2026-05-16 — 2026-05-19 Updated 2026-05-19 02:40 UTC
Summary
Total Alerts
64
Peak Active
64
States
2

Alert Timeline

64
Winter Storm Warning
Wind River Mountains East; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Casper Mountain; East Sweetwater County
2026-05-18 17:49 UTC
Winter Storm Warning
North Laramie Range; Ferris/Seminoe/Shirley Mountains; Central Carbon County; Sierra Madre Range; Snowy Range; South Laramie Range
2026-05-18 17:38 UTC
Winter Storm Warning
Central Carbon County
2026-05-18 14:41 UTC
Winter Storm Warning
South Laramie Range
2026-05-18 14:41 UTC
Winter Storm Warning
North Laramie Range; Snowy Range
2026-05-18 14:41 UTC
Winter Storm Warning
Sierra Madre Range
2026-05-18 14:41 UTC
Winter Storm Warning
Ferris/Seminoe/Shirley Mountains
2026-05-18 14:41 UTC
Blizzard Warning
North Snowy Range Foothills
2026-05-18 14:41 UTC
Winter Storm Warning
Green Mountains and Rattlesnake Range
2026-05-18 12:46 UTC
Winter Storm Warning
Wind River Mountains East
2026-05-18 12:46 UTC
Winter Storm Warning
Lander Foothills
2026-05-18 12:46 UTC
Winter Storm Warning
Natrona County Lower Elevations
2026-05-18 12:46 UTC
Winter Storm Warning
Casper Mountain
2026-05-18 12:46 UTC
Winter Storm Warning
East Sweetwater County
2026-05-18 12:46 UTC
Winter Storm Warning
Lander Foothills
2026-05-18 10:42 UTC
Winter Storm Warning
Wind River Mountains East
2026-05-18 10:42 UTC
Winter Storm Warning
Casper Mountain
2026-05-18 10:42 UTC
Winter Storm Warning
East Sweetwater County
2026-05-18 10:42 UTC
Winter Storm Warning
Natrona County Lower Elevations
2026-05-18 10:42 UTC
Winter Storm Warning
Green Mountains and Rattlesnake Range
2026-05-18 10:42 UTC
Winter Storm Warning
South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet
2026-05-18 09:06 UTC
Winter Storm Warning
Sierra Madre Range
2026-05-18 08:40 UTC
Blizzard Warning
North Snowy Range Foothills
2026-05-18 08:40 UTC
Winter Storm Warning
South Laramie Range
2026-05-18 08:40 UTC
Winter Storm Warning
North Laramie Range; Snowy Range
2026-05-18 08:40 UTC
Winter Storm Warning
Ferris/Seminoe/Shirley Mountains
2026-05-18 08:40 UTC
Winter Storm Warning
Central Carbon County
2026-05-18 08:40 UTC
Winter Storm Warning
Lander Foothills
2026-05-18 03:14 UTC
Winter Storm Warning
Casper Mountain
2026-05-18 03:14 UTC
Winter Storm Warning
East Sweetwater County
2026-05-18 03:14 UTC

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