A series of cold fronts will produce showers and a few strong thunderstorms across parts of the High Plains and into the northern Rockies, and the Mid-Atlantic. Strong, dry winds in the northern Plains, 4-Corners area, and the Southeast will produce critical fire weather threats. Fire weather threats also remain elevated in Guam. Locally heavy rain may cause flash flooding in Hawaii. Read More >
Text of all SIGMETs Around Contiguous Western US |
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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:
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Map of SIGMETs (including International) |
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