


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Seattle/Tacoma, WA
Issued by NWS Seattle/Tacoma, WA
769 FNUS56 KSEW 282151 FWFSEW Fire Weather Planning Forecast for Western Washington National Weather Service Seattle WA 251 PM PDT Thu Aug 28 2025 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR INSTABILITY AND THUNDERSTORMS IN ZONE 658, 659, 661... .DISCUSSION...Isolated thunderstorms will redevelop over the higher terrain again this afternoon and evening. Lightning on dry fuels that have reached or exceeded the 90th percentile ERC values is the main concern, but any thunderstorms that develop will be capable of erratic, gusty winds and brief heavy rain as monsoonal moisture has been brought into the area from the Southwest. Drier conditions will develop on Friday. A trend toward much warmer and continued dry conditions are expected early next week as an upper level ridge strengthens over the region. Forecast for 20 foot wind speed (valleys and ridge tops) are 10 minute averages reflecting RAWS winds. WAZ649-291145- North and Central Coastal Strip- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Mostly cloudy. Patchy fog in the evening, then areas of fog after midnight. * Min temperature.......Around 56. * Max humidity..........93-100 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds. * Ridges/upr slopes...Light winds. * Mixing height.........400-600 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...7 percent. .FRIDAY... * Sky/weather...........Partly sunny. Widespread fog in the morning. * Max temperature.......60-70. * Min humidity..........77-92 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming southwest around 4 mph in the afternoon. * Ridges/upr slopes...Light winds becoming southwest around 4 mph in the afternoon. * Mixing height.........600-1100 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .FRIDAY NIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......Around 55. * Max humidity..........90-100 percent. * 20-foot winds......... * Valleys/lwr slopes..West winds 3 to 4 mph. * Ridges/upr slopes...West winds around 3 mph in the evening becoming light. * Mixing height.........400-700 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .SATURDAY... * Sky/weather...........Mostly cloudy. * Max temperature.......61-71. * Min humidity..........75-90 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming west around 4 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 4 mph in the afternoon. * Mixing height.........500-1000 ft AGL. * Transport winds.......South around 5 mph shifting to the west in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SATURDAY NIGHT...Mostly cloudy. Lows in the mid 50s. West winds around 3 mph in the evening becoming light. .SUNDAY...Partly sunny. Highs 65 to 75. Light winds becoming west around 5 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s. Light winds. .LABOR DAY...Mostly sunny. Highs 66 to 76. Northwest winds around 3 mph. .MONDAY NIGHT...Partly cloudy. Lows in the mid 50s. Northwest winds around 3 mph. .TUESDAY...Mostly sunny. Highs 67 to 77. Northwest winds around 4 mph. .WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs 67 to 77. .THURSDAY...Mostly cloudy. Lows in the mid 50s. Highs 66 to 76. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ650-291145- North Coastal Lowlands- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy then becoming mostly cloudy. Areas of fog after midnight. * Min temperature.......55-65. * Max humidity..........76-91 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds. * Ridges/upr slopes...Light winds. * Mixing height.........500-900 ft AGL. * Transport winds.......Northwest around 5 mph shifting to the southwest after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...7 percent. .FRIDAY... * Sky/weather...........Partly sunny. Widespread dense fog in the morning. * Max temperature.......67-77. * Min humidity..........63-78 percent...except 69-81 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming southwest around 3 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 4 mph in the afternoon. * Mixing height.........700-1600 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy then becoming mostly cloudy. * Min temperature.......52-62. * Max humidity..........77-92 percent...except 82-93 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..West winds up to 3 mph. * Ridges/upr slopes...West winds around 3 mph in the evening becoming light. * Mixing height.........500-1000 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. .SATURDAY... * Sky/weather...........Partly sunny. * Max temperature.......67-77...except 63-73 ridges. * Min humidity..........63-78 percent...except 68-83 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming west around 3 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 4 mph in the afternoon. * Mixing height.........600-1600 ft AGL. * Transport winds.......South around 5 mph shifting to the west in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SATURDAY NIGHT...Mostly cloudy. Slight chance of showers in the evening. Lows 52 to 62. West winds around 3 mph in the evening becoming light. .SUNDAY...Partly sunny. Highs 68 to 78. Light winds becoming west around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s. Light winds. .LABOR DAY...Mostly sunny. Highs 70 to 80. Light winds. .MONDAY NIGHT...Partly cloudy. Lows 53 to 63. Light winds. .TUESDAY...Mostly sunny. Highs 72 to 82. Light winds. .WEDNESDAY...Partly cloudy. Lows 54 to 64. Highs 73 to 83. .THURSDAY...Partly cloudy. Lows 54 to 64. Highs 73 to 83. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ651-291145- Central Coastal Lowlands- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy then becoming mostly cloudy. Patchy fog after midnight. * Min temperature.......54-64. * Max humidity..........80-95 percent. * 20-foot winds......... * Valleys/lwr slopes..West winds around 3 mph in the evening becoming light. * Ridges/upr slopes...West winds 3 to 4 mph. * Mixing height.........500-900 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...7 percent. .FRIDAY... * Sky/weather...........Partly sunny. Areas of fog in the morning. * Max temperature.......70-80...except 67-77 ridges. * Min humidity..........64-79 percent...except 69-80 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming west around 4 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 3 mph in the afternoon. * Mixing height.........700-1700 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy then becoming mostly cloudy. * Min temperature.......51-61. * Max humidity..........80-95 percent. * 20-foot winds......... * Valleys/lwr slopes..West winds around 3 mph in the evening becoming light. * Ridges/upr slopes...West winds around 3 mph in the evening becoming light. * Mixing height.........400-1000 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .SATURDAY... * Sky/weather...........Partly sunny. * Max temperature.......68-78...except 65-75 ridges. * Min humidity..........66-81 percent. * 20-foot winds......... * Valleys/lwr slopes..Light winds becoming west around 4 mph in the afternoon. * Ridges/upr slopes...Light winds becoming west around 3 mph in the afternoon. * Mixing height.........600-1600 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SATURDAY NIGHT...Mostly cloudy. Lows in the mid 50s. West winds around 4 mph in the evening becoming light. .SUNDAY...Partly sunny. Highs 71 to 81 valleys...65 to 75 ridges. Light winds becoming west around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s. Light winds. .LABOR DAY...Mostly sunny. Highs 73 to 83 valleys...68 to 78 ridges. Light winds. .MONDAY NIGHT...Partly cloudy. Lows 52 to 62. Light winds. .TUESDAY...Mostly sunny. Highs 76 to 86 valleys...71 to 81 ridges. Light winds. .WEDNESDAY...Partly cloudy. Lows 53 to 63. Highs 77 to 87. .THURSDAY...Partly cloudy. Lows 53 to 63. Highs 75 to 85. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ652-291145- West Portion of the Olympic Mountains- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......52-62. * Max humidity..........72-87 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 1 to 2 mph. * Ridges/upr slopes...Light winds. * Mixing height.........300-800 ft AGL. * Transport winds.......East around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...8 percent. * Freezing level........12500 Feet. .FRIDAY... * Sky/weather...........Partly sunny. Areas of dense fog in the morning. * Max temperature.......68-78...except 65-75 ridges. * Min humidity..........60-75 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 1 to 3 mph. * Ridges/upr slopes...Light winds becoming southwest around 3 mph in the afternoon. * Mixing height.........700-1700 ft AGL. * Transport winds.......Southeast around 5 mph shifting to the southwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. * Freezing level........13000 Feet. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy then becoming mostly cloudy. * Min temperature.......50-60. * Max humidity..........73-88 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 2 mph. * Ridges/upr slopes...Light winds. * Mixing height.........300-700 ft AGL. * Transport winds.......Southwest around 5 mph shifting to the southeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. * Freezing level........13500 Feet. .SATURDAY... * Sky/weather...........Partly sunny. * Max temperature.......65-75...except 62-72 ridges. * Min humidity..........59-74 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 4 mph. * Ridges/upr slopes...Light winds becoming west around 4 mph in the afternoon. * Mixing height.........400-1400 ft AGL. * Transport winds.......Southeast around 5 mph shifting to the southwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. * Freezing level........13000 Feet. .SATURDAY NIGHT...Partly cloudy with slight chance of showers. Freezing level 12500 feet. Lows in the upper 50s. West winds around 3 mph in the evening becoming light. .SUNDAY...Mostly sunny. Freezing level 13000 feet. Highs 64 to 74. Light winds becoming west around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Freezing level 13500 feet. Lows in the upper 50s. Light winds. .LABOR DAY...Sunny. Freezing level 14000 feet. Highs 67 to 77. Light winds. .MONDAY NIGHT...Mostly clear. Freezing level 14500 feet. Lows in the upper 50s. Light winds. .TUESDAY...Sunny. Freezing level 14500 feet. Highs 71 to 81. Light winds. .WEDNESDAY...Mostly clear. Freezing level 15000 feet. Lows in the lower 60s. Highs 72 to 82. .THURSDAY...Partly cloudy. Freezing level 15500 feet. Lows in the lower 60s. Highs 71 to 81. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ661-291145- East Portion of the Olympic Mountains- 251 PM PDT Thu Aug 28 2025 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING... .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......52-62. * Max humidity..........75-90 percent...except 67-82 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 2 mph. * Ridges/upr slopes...Light winds becoming southwest around 3 mph after midnight. * Mixing height.........400-900 ft AGL. * Transport winds.......Southeast around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...7 percent. * Freezing level........12500 Feet. .FRIDAY... * Sky/weather...........Mostly sunny. Areas of dense fog in the morning. * Max temperature.......71-81...except 64-74 ridges. * Min humidity..........53-68 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...South winds 3 to 5 mph. * Mixing height.........1000-2000 ft AGL. * Transport winds.......South around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. * Freezing level........13000 Feet. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......49-59. * Max humidity..........74-89 percent...except 65-80 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 3 mph. * Ridges/upr slopes...West winds 3 to 5 mph. * Mixing height.........400-900 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. * Freezing level........13500 Feet. .SATURDAY... * Sky/weather...........Mostly sunny. * Max temperature.......68-78...except 62-72 ridges. * Min humidity..........55-70 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 4 mph. * Ridges/upr slopes...West winds 3 to 5 mph. * Mixing height.........500-1500 ft AGL. * Transport winds.......South around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. * Freezing level........13000 Feet. .SATURDAY NIGHT...Partly cloudy. Slight chance of showers after midnight. Freezing level 12500 feet. Lows 51 to 61. West winds 3 to 5 mph. .SUNDAY...Mostly sunny. Freezing level 13000 feet. Highs 67 to 77 valleys...60 to 70 ridges. Light winds becoming southwest around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Freezing level 13500 feet. Lows 50 to 60. Light winds. .LABOR DAY...Sunny. Freezing level 14000 feet. Highs 70 to 80 valleys...63 to 73 ridges. Light winds. .MONDAY NIGHT...Mostly clear. Freezing level 14500 feet. Lows 53 to 63. Light winds. .TUESDAY...Sunny. Freezing level 14500 feet. Highs 74 to 84 valleys...68 to 78 ridges. North winds around 3 mph. .WEDNESDAY...Mostly clear. Freezing level 15000 feet. Lows 56 to 66. Highs 75 to 85 valleys...69 to 79 ridges. .THURSDAY...Mostly clear. Freezing level 15500 feet. Lows around 60. Highs 74 to 84 valleys...67 to 77 ridges. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ653-291145- Strait of Juan De Fuca and Northwest Interior Lowlands- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......53-63. * Max humidity..........76-91 percent. * 20-foot winds.........West winds 3 to 4 mph. * Mixing height.........500-600 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...5 percent. .FRIDAY... * Sky/weather...........Mostly sunny. Patchy fog in the morning. * Max temperature.......70-80. * Min humidity..........60-75 percent. * 20-foot winds.........Light winds becoming west around 4 mph in the afternoon. * Mixing height.........600-900 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......51-61. * Max humidity..........76-91 percent. * 20-foot winds.........West winds 3 to 5 mph. * Mixing height.........500-600 ft AGL. * Transport winds.......West 5 to 10 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. .SATURDAY... * Sky/weather...........Mostly sunny. * Max temperature.......68-78. * Min humidity..........62-77 percent. * 20-foot winds.........Light winds becoming west around 4 mph in the afternoon. * Mixing height.........500-1100 ft AGL. * Transport winds.......South around 5 mph shifting to the west in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SATURDAY NIGHT...Partly cloudy with slight chance of showers. Lows 52 to 62. West winds 3 to 5 mph. .SUNDAY...Mostly sunny. Slight chance of showers in the morning. Highs 70 to 80. Light winds becoming west around 5 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 52 to 62. West winds around 3 mph. .LABOR DAY...Mostly sunny. Highs 71 to 81. West winds around 3 mph. .MONDAY NIGHT...Mostly clear. Lows 53 to 63. West winds around 3 mph. .TUESDAY...Sunny. Highs 72 to 82. Northwest winds around 3 mph. .WEDNESDAY...Partly cloudy. Lows 54 to 64. Highs 73 to 83. .THURSDAY...Partly cloudy. Lows 54 to 64. Highs 73 to 83. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ654-291145- Central and South Puget Sound Lowlands- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......54-64. * Max humidity..........75-90 percent. * 20-foot winds.........North winds around 3 mph in the evening becoming light. * Mixing height.........500-1400 ft AGL. * Transport winds.......North around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...5 percent. .FRIDAY... * Sky/weather...........Partly sunny. Patchy fog in the morning. * Max temperature.......75-85. * Min humidity..........50-65 percent. * 20-foot winds.........Light winds becoming southwest around 4 mph in the afternoon. * Mixing height.........1100-2100 ft AGL. * Transport winds.......Southwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......52-62. * Max humidity..........75-90 percent. * 20-foot winds.........Northwest winds around 3 mph in the evening becoming light. * Mixing height.........400-1300 ft AGL. * Transport winds.......West around 5 mph shifting to the southwest after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .SATURDAY... * Sky/weather...........Partly sunny. * Max temperature.......71-81. * Min humidity..........56-71 percent. * 20-foot winds.........Light winds becoming southwest around 4 mph in the afternoon. * Mixing height.........1000-2000 ft AGL. * Transport winds.......South around 5 mph shifting to the west in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. .SATURDAY NIGHT...Partly cloudy. Slight chance of showers after midnight. Lows in the upper 50s. West winds 3 to 5 mph. .SUNDAY...Partly sunny. Highs in the upper 70s. Light winds becoming southwest around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northwest winds around 3 mph. .LABOR DAY...Mostly sunny. Highs around 80. Light winds. .MONDAY NIGHT...Mostly clear. Lows 54 to 64. Northwest winds around 3 mph. .TUESDAY...Sunny. Highs 78 to 88. North winds around 3 mph. .WEDNESDAY...Partly cloudy. Lows 55 to 65. Highs 79 to 89. .THURSDAY...Partly cloudy. Lows 55 to 65. Highs 78 to 88. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ655-291145- Black Hills and Southwest Interior Lowlands- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy then becoming mostly cloudy. * Min temperature.......55-65. * Max humidity..........75-90 percent. * 20-foot winds.........Northwest winds 3 to 4 mph. * Mixing height.........600-1500 ft AGL. * Transport winds.......Northwest around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...5 percent. .FRIDAY... * Sky/weather...........Partly sunny. Areas of fog in the morning. * Max temperature.......76-86. * Min humidity..........44-59 percent. * 20-foot winds.........Light winds becoming west around 3 mph in the afternoon. * Mixing height.........1300-2300 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy then becoming mostly cloudy. * Min temperature.......53-63. * Max humidity..........73-88 percent. * 20-foot winds.........West winds around 3 mph in the evening becoming light. * Mixing height.........600-1500 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .SATURDAY... * Sky/weather...........Partly sunny. * Max temperature.......73-83. * Min humidity..........51-66 percent. * 20-foot winds.........Light winds becoming west around 3 mph in the afternoon. * Mixing height.........900-1900 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .SATURDAY NIGHT...Partly cloudy. Lows 51 to 61. West winds around 4 mph in the evening becoming light. .SUNDAY...Partly sunny. Highs around 80. Light winds becoming west around 3 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 51 to 61. Light winds. .LABOR DAY...Mostly sunny. Highs in the lower 80s. Light winds. .MONDAY NIGHT...Mostly clear. Lows 52 to 62. Light winds. .TUESDAY...Sunny. Highs in the mid 80s. Light winds. .WEDNESDAY...Partly cloudy. Lows 54 to 64. Highs in the upper 80s. .THURSDAY...Partly cloudy. Lows 55 to 65. Highs 82 to 92. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ656-291145- Northeast Puget Sound Lowlands Generally Below 1500 Feet- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......57-67. * Max humidity..........78-93 percent. * 20-foot winds.........Light winds. * Mixing height.........900-1300 ft AGL. * Transport winds.......Northeast around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...8 percent. .FRIDAY... * Sky/weather...........Mostly sunny. * Max temperature.......75-85. * Min humidity..........48-63 percent. * 20-foot winds.........Light winds becoming west around 3 mph in the afternoon. * Mixing height.........1500-2500 ft AGL. * Transport winds.......South around 5 mph shifting to the southwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......54-64. * Max humidity..........74-89 percent. * 20-foot winds.........Light winds. * Mixing height.........900-1500 ft AGL. * Transport winds.......West around 5 mph shifting to the south after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. .SATURDAY... * Sky/weather...........Mostly sunny. * Max temperature.......74-84. * Min humidity..........49-64 percent. * 20-foot winds.........Light winds becoming west around 4 mph in the afternoon. * Mixing height.........1300-2300 ft AGL. * Transport winds.......Southeast around 5 mph shifting to the west in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...5 percent. .SATURDAY NIGHT...Mostly cloudy with slight chance of showers. Lows 55 to 65. West winds around 3 mph shifting to the southeast after midnight. .SUNDAY...Partly sunny. Slight chance of showers in the morning. Highs 75 to 85. Light winds becoming west around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 54 to 64. Light winds. .LABOR DAY...Mostly sunny. Highs 77 to 87. Light winds. .MONDAY NIGHT...Mostly clear. Lows 56 to 66. Light winds. .TUESDAY...Sunny. Highs 81 to 91. Light winds. .WEDNESDAY...Partly cloudy. Lows 57 to 67. Highs 81 to 91. .THURSDAY...Partly cloudy. Lows 57 to 67. Highs 80 to 90. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ657-291145- Southeast Puget Sound Lowlands Generally Below 1500 Feet- 251 PM PDT Thu Aug 28 2025 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......55-65. * Max humidity..........79-94 percent. * 20-foot winds.........Light winds. * Mixing height.........600-1600 ft AGL. * Transport winds.......North around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...7 percent. .FRIDAY... * Sky/weather...........Mostly sunny. * Max temperature.......79-89. * Min humidity..........46-61 percent. * 20-foot winds.........Light winds. * Mixing height.........1400-2400 ft AGL. * Transport winds.......Light winds becoming west around 5 mph in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......52-62. * Max humidity..........79-94 percent. * 20-foot winds.........Light winds. * Mixing height.........700-1700 ft AGL. * Transport winds.......West around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...1 percent. .SATURDAY... * Sky/weather...........Mostly sunny. * Max temperature.......75-85. * Min humidity..........53-68 percent. * 20-foot winds.........Light winds becoming west around 3 mph in the afternoon. * Mixing height.........1200-2200 ft AGL. * Transport winds.......Southwest around 5 mph shifting to the northwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. .SATURDAY NIGHT...Mostly cloudy. Slight chance of showers after midnight. Lows 54 to 64. Northwest winds around 3 mph in the evening becoming light. .SUNDAY...Partly sunny. Highs around 80. Light winds becoming west around 3 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 53 to 63. Light winds. .LABOR DAY...Mostly sunny. Highs in the lower 80s. Light winds. .MONDAY NIGHT...Mostly clear. Lows 54 to 64. Light winds. .TUESDAY...Mostly sunny. Highs in the mid 80s. Light winds. .WEDNESDAY...Partly cloudy. Lows around 60. Highs in the mid 80s. .THURSDAY...Partly cloudy. Lows around 60. Highs in the mid 80s. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ658-291145- West Slopes of the North Cascades Generally above 1500 Feet- 251 PM PDT Thu Aug 28 2025 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING... .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......55-65...except 51-61 ridges. * Max humidity..........73-88 percent. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 2 to 3 mph. * Ridges/upr slopes...Light winds becoming southeast around 5 mph after midnight. * Mixing height.........500-900 ft AGL. * Transport winds.......East around 5 mph. * CWR (>0.25)...........0 percent. * Chance of Lightning...14 percent. * Freezing level........13000 Feet. .FRIDAY... * Sky/weather...........Mostly sunny. * Max temperature.......75-85...except 68-78 ridges. * Min humidity..........46-61 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...Southeast winds around 3 mph shifting to the west around 4 mph in the afternoon. * Mixing height.........800 ft AGL increasing to 3600 ft AGL in the afternoon. * Transport winds.......Southeast around 5 mph shifting to the southwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...3 percent. * Freezing level........13000 Feet. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......54-64...except 49-59 ridges. * Max humidity..........70-85 percent...except 64-79 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley 2 to 3 mph. * Ridges/upr slopes...West winds around 3 mph shifting to the east around 5 mph after midnight. * Mixing height.........500-1400 ft AGL. * Transport winds.......Southwest around 5 mph shifting to the southeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...4 percent. * Freezing level........13500 Feet. .SATURDAY... * Sky/weather...........Mostly sunny. * Max temperature.......74-84...except 68-78 ridges. * Min humidity..........45-60 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 3 to 4 mph. * Ridges/upr slopes...East winds around 4 mph shifting to the west in the afternoon. * Mixing height.........500 ft AGL increasing to 3300 ft AGL in the afternoon. * Transport winds.......Southeast around 5 mph shifting to the southwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...5 percent. * Freezing level........13000 Feet. .SATURDAY NIGHT...Mostly cloudy. Slight chance of showers in the evening, then chance of showers after midnight. Freezing level 13000 feet. Lows 54 to 64. West winds around 4 mph shifting to the east after midnight. .SUNDAY...Mostly sunny. Slight chance of showers in the morning. Freezing level 13500 feet. Highs 73 to 83 valleys...67 to 77 ridges. East winds around 3 mph shifting to the southwest around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Freezing level 14000 feet. Lows 53 to 63. Northeast winds around 3 mph. .LABOR DAY...Mostly sunny. Freezing level 14500 feet. Highs 76 to 86 valleys...71 to 81 ridges. Northeast winds around 3 mph. .MONDAY NIGHT...Mostly clear. Freezing level 15000 feet. Lows 55 to 65. Northeast winds around 3 mph. .TUESDAY...Sunny. Freezing level 15000 feet. Highs 80 to 90 valleys...74 to 84 ridges. Northwest winds around 3 mph. .WEDNESDAY...Mostly clear. Freezing level 15000 feet. Lows 57 to 67. Highs 79 to 89 valleys...73 to 83 ridges. .THURSDAY...Partly cloudy. Freezing level 15500 feet. Lows 56 to 66. Highs 77 to 87 valleys...70 to 80 ridges. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ WAZ659-291145- West Slopes of the Central Cascades Generally above 1500 Feet- 251 PM PDT Thu Aug 28 2025 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING... .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......52-62. * Max humidity..........74-89 percent...except 65-80 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 2 mph. * Ridges/upr slopes...Light winds becoming southeast around 3 mph after midnight. * Mixing height.........500-1500 ft AGL. * Transport winds.......North around 5 mph shifting to the southeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...7 percent. * Freezing level........13000 Feet. .FRIDAY... * Sky/weather...........Mostly sunny. Widespread dense fog in the morning. * Max temperature.......77-87...except 68-78 ridges. * Min humidity..........41-56 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...Light winds becoming west around 3 mph in the afternoon. * Mixing height.........700 ft AGL increasing to 3500 ft AGL in the afternoon. * Transport winds.......Southeast around 5 mph shifting to the southwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...0 percent. * Freezing level........13500 Feet. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......51-61. * Max humidity..........72-87 percent...except 64-79 percent ridges. * 20-foot winds......... * Valleys/lwr slopes..Downslope/downvalley around 2 mph. * Ridges/upr slopes...Light winds becoming east around 3 mph after midnight. * Mixing height.........400-1400 ft AGL. * Transport winds.......West around 5 mph shifting to the southeast after midnight. * CWR (>0.25)...........0 percent. * Chance of Lightning...2 percent. * Freezing level........13500 Feet. .SATURDAY... * Sky/weather...........Mostly sunny. * Max temperature.......74-84...except 67-77 ridges. * Min humidity..........47-62 percent. * 20-foot winds......... * Valleys/lwr slopes..Upslope/upvalley 2 to 3 mph. * Ridges/upr slopes...East winds around 3 mph shifting to the west around 4 mph in the afternoon. * Mixing height.........400 ft AGL increasing to 2900 ft AGL in the afternoon. * Transport winds.......East around 5 mph shifting to the southwest in the afternoon. * CWR (>0.25)...........0 percent. * Chance of Lightning...5 percent. * Freezing level........13000 Feet. .SATURDAY NIGHT...Mostly cloudy with slight chance of showers. Freezing level 13500 feet. Lows 52 to 62. Northwest winds around 3 mph in the evening becoming light. .SUNDAY...Mostly sunny. Freezing level 13500 feet. Highs 72 to 82 valleys...66 to 76 ridges. Light winds becoming west around 4 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Slight chance of showers after midnight. Freezing level 14000 feet. Lows 52 to 62. Light winds. .LABOR DAY...Mostly sunny. Freezing level 14500 feet. Highs 74 to 84 valleys...69 to 79 ridges. Light winds. .MONDAY NIGHT...Partly cloudy. Freezing level 15000 feet. Lows 54 to 64. North winds around 3 mph. .TUESDAY...Sunny. Freezing level 15000 feet. Highs 79 to 89 valleys...74 to 84 ridges. Light winds. .WEDNESDAY...Partly cloudy. Freezing level 15000 feet. Lows 57 to 67. Highs 80 to 90 valleys...75 to 85 ridges. .THURSDAY...Partly cloudy. Freezing level 15000 feet. Lows 56 to 66. Highs 78 to 88 valleys...71 to 81 ridges. .8 TO 14 day Outlook for Sep 05 - 11 2025 Above normal temperatures and above normal precipitation. $$ www.weather.gov/seattle