A strong Bering Sea storm will continue to impact the Aleutian Islands and parts of southwestern Alaska through Friday. High Wind Warnings have been issued for the entire Aleutian Island chain. Across the Great Basin and northern Rockies, strong winds and dry conditions will lead to critical fire weather conditions Friday as a strong Pacific system moves inland. Read More >
Seattle, WA
Center Weather Service Unit
Text of all SIGMETs Around Contiguous Western US |
None Found |
Description of Convective and Non-Convective SIGMETs SIGMETs are Inflight Weather Advisories for Significant Meteorological hazards. A SIGMET is "widespread" in that it covers an area of at least 3,000 square miles. Note that the particular hazard may be present in only a small portion of the area at any particular time. SIGMETS are issued for:
Convective SIGMETs are issued for severe convective activity, which implies severe turbulence, severe icing, and low-level wind shear. Specifically:
|
Map of SIGMETs (including International) |
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Seattle, WA
3101 Auburn Way South
Auburn, WA 98092
Comments? Questions? Please Contact Us.