Air Stagnation Advisory issued December 6 at 1:25AM MST until December 7 at 5:00PM MST by NWS Boise ID
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants in valleys. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...Until 5 PM MST /4 PM PST/ Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Air Stagnation Advisory issued December 4 at 9:16AM MST until December 7 at 5:00PM MST by NWS Boise ID
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Treasure Valley Zones. * WHEN...For the Dense Fog Advisory, until 2 PM MST Friday. For the Air Stagnation Advisory, until 5 PM MST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Fog could produce patchy
Wind Advisory issued December 4 at 1:11AM MST until December 4 at 5:00PM MST by NWS Rapid City SD
* WHAT...Northwest winds 20 to 35 mph with gusts up to 50 mph expected. * WHERE...Mellette and Todd Counties, including portions of the Rosebud Reservation, Bennett, Tripp, and Southern Jackson. * WHEN...From 8 AM MST /9 AM CST/ this morning to 5 PM MST /6 PM CST/ this afternoon. * IMPACTS...Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.
Air Stagnation Advisory issued December 3 at 6:38PM MST until December 7 at 5:00PM MST by NWS Boise ID
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Upper Treasure Valley. * WHEN...For the Dense Fog Advisory, until noon MST Wednesday. For the Air Stagnation Advisory, until 5 PM MST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.
Small Craft Advisory issued December 3 at 3:33AM EST until December 3 at 5:00PM EST by NWS Jacksonville FL
* WHAT...Northwest winds 15 to 20 kt with gusts up to 30 kt expected. * WHERE...Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM. * WHEN...Until 5 PM EST this afternoon. * IMPACTS...Conditions will be hazardous to small craft.
Winter Weather Advisory issued December 2 at 5:13PM AKST until December 4 at 5:00PM AKST by NWS Anchorage AK
* WHAT...Mixed precipitation. Total ice accumulations of a glaze to one tenth of an inch and snow accumulations of up to 3 inches. North winds gusting 35 to 50 mph, strongest near the coast. * WHERE...Bristol Bay. * WHEN...Until 5 PM AKST Wednesday. * IMPACTS...Power outages are possible. Travel could be extremely hazardous. * ADDITIONAL DETAILS...Multiple rounds of light precipitation will bring chances for freezing rain. The first round, through Tuesday morning, will bring chances for a trace to a few hundredths of an inch of ice mixed in with light snow. Another round of precipitation Tuesday afternoon through Wednesday
Small Craft Advisory issued December 2 at 2:43AM EST until December 3 at 5:00PM EST by NWS Jacksonville FL
* WHAT...Northwest winds around 20 kt with gusts up to 30 kt expected. * WHERE...Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM. * WHEN...From 1 AM to 5 PM EST Tuesday. * IMPACTS...Conditions will be hazardous to small craft.
Heat Advisory issued November 29 at 3:35AM AST until November 29 at 5:00PM AST by NWS San Juan PR
* WHAT...A period of dangerously hot and humid conditions are expected. This level of heat affects most individual sensitive to heat. * WHERE...Southern Puerto Rico. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Air Quality Alert issued November 28 at 5:00PM AKST by NWS Fairbanks AK
The Department of Environmental Conservation has issued an Air Quality Alert which is IN EFFECT UNTIL 1 PM AKST FRIDAY. North Pole has a Stage 2 alert. Fairbanks has a Stage 1 alert.
Small Craft Advisory issued November 27 at 2:49PM AKST until November 28 at 5:00PM AKST by NWS Juneau AK
Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 NM Wind forecasts reflect the predominant speed and direction expected. Seas forecasts represent the average of the highest one-third of the combined windwave and swell height. .TONIGHT...W wind 15 kt becoming E late. Seas 6 ft. Rain showers early in the evening. .THU...NE wind 25 kt. Seas 7 ft. .THU NIGHT...NE wind 30 kt. Seas 8 ft. .FRI...NE wind 25 kt. Seas 11 ft. .FRI NIGHT...E wind 25 kt. Seas 13 ft. .SAT...E wind 30 kt. Seas 13 ft. .SUN...SE wind 30 kt. Seas 12 ft. .MON...SE wind