AI Summary

Expect occasional severe turbulence below 18,000 feet over northeastern Wyoming, Colorado, and Nebraska until 10:35 PM local time. Strong low level winds and wind shear reported by multiple aircraft. Conditions may continue beyond the expected time.

Hazard Type
Non-Convective Turbulence
Hazard Severity
Severe
Valid From
01/21 23:35 GMT
Valid To
01/22 03:35 GMT
Expires (min)
-95
Min Altitude
Unknown
Max Altitude
18,000 ft
Direction (deg)
Speed (kt)
Raw Report
WSUS03 KKCI 212335 
CHIY WS 212335 
SIGMET YANKEE 1 VALID UNTIL 220335 
SIGMET  
NE WY CO 
FROM 50WNW LAR TO 30W SNY TO TBE TO 30SW ALS TO 50WNW LAR 
OCNL SEV TURB BLW FL180. DUE TO STG LOW LVL WNDS AND STG UDDFS 
AND LLWS. RPTD BY MANY ACFT. CONDS CONTG BYD 0335Z.