| Potential Impact | None | Slight | Moderate | High |
| Time | 1753Z | 27/19Z | 27/20Z | 27/21Z | 27/22Z | 27/23Z | 28/00Z | 28/01Z | 28/02Z | 28/03Z | 28/04Z | 28/05Z | 28/06Z | 28/07Z>> |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | OBS | PRVL [TEMP] |
PRVL | PRVL | PRVL | PRVL | PRVL | PRVL | PRVL | PRVL | PRVL | PRVL | PRVL | PRVL |
| VIS | 10 | >6 | >6 | >6 | >6 | >6 | >6 | >6 | >6 | >6 | >6 | >6 | >6 | >6 |
| CIG | 31 | 20 [30] |
20 | 20 | 20 | 20 | 20 | 20 | 20 | 40 | 40 | 40 | 40 | 20 |
| Cover | BKN | OVC [OVC] |
OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC |
| FltCat | VFR | MVFR [MVFR] |
MVFR | MVFR | MVFR | MVFR | MVFR | MVFR | MVFR | VFR | VFR | VFR | VFR | MVFR |
| WX | -- | -- [-SHRA] |
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| WDir | 210 | 200 [200] |
200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 |
| WSpd | 15 | 15 [15] |
15 | 15 | 15 | 15 | 15 | 15 | 15 | 13 | 13 | 13 | 13 | 10 |
| WGst | -- | 22 [22] |
22 | 22 | 22 | 22 | 22 | 22 | 22 | -- | -- | -- | -- | -- |
KSEA 271749Z 2718/2824 20015G22KT P6SM BKN020 OVC040
TEMPO 2718/2720 -SHRA SCT010 OVC030
FM280300 20013KT P6SM SCT020 OVC040
FM280700 20010KT P6SM OVC020KSEA 271753Z 21015KT 10SM SCT021 BKN031 BKN050 14/10 A2989 RMK AO2 SLP127 60024 T01440100 10144 20100 58004KSEA 271739Z 21017G25KT 10SM SCT021 BKN031 BKN050 14/09 A2989 RMK AO2 T01390094KSEA 271700Z 20015G22KT 10SM FEW015 BKN021 OVC043 14/12 A2990 RMK AO2 T01390117KSEA 271653Z 21015G22KT 10SM SCT018 SCT024 BKN050 13/11 A2990 RMK AO2 RAB09E19 SLP131 P0000 T01330111KSEA 271553Z 18007KT 7SM FEW010 SCT028 OVC042 11/11 A2990 RMK AO2 RAE52 SLP131 P0004 T01110106