KSEA - Seattle-Tacoma Intl, WA, US
| Potential Impact | None | Slight | Moderate | High |
| Time | 15/19Z | 15/20Z | 15/21Z | 15/22Z | 15/23Z | 16/00Z | 16/01Z | 16/02Z | 16/03Z | 16/04Z | 16/05Z | 16/06Z | 16/07Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp | 65 | 67 | 68 | 68 | 69 | 69 | 68 | 65 | 63 | 61 | 60 | 59 | 60 |
| Dewpt | 49 | 49 | 49 | 50 | 50 | 50 | 50 | 49 | 49 | 50 | 51 | 51 | 51 |
| Altim | 1022.8 | 1022.1 | 1021.8 | 1021.1 | 1020.7 | 1020.7 | 1020.4 | 1020.4 | 1020.4 | 1020.4 | 1019.7 | 1020.1 | 1019.7 |
| VIS | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ |
| CIG | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cover | SCT | FEW | FEW | FEW | FEW | FEW | FEW | FEW | FEW | FEW | CLR | CLR | CLR |
| FltCat | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR |
| WX | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| WDir | 30 | 360 | 10 | 350 | 330 | 360 | 350 | 340 | 10 | 340 | 340 | 330 | 10 |
| WSpd | 9 | 8 | 8 | 11 | 10 | 10 | 11 | 10 | 9 | 8 | 7 | 4 | 9 |
| WGst | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
METAR KSEA 151853Z 03009KT 10SM SCT027 18/09 A3020 RMK AO2 SLP231 T01830094
METAR KSEA 151953Z COR 36008KT 10SM FEW030 19/09 A3018 RMK AO2 SLP226 T01940094
METAR KSEA 152053Z 01008KT 10SM FEW030 FEW250 20/09 A3017 RMK AO2 SLP222 T02000094 56015
METAR KSEA 152153Z 35011KT 10SM FEW030 FEW250 20/10 A3015 RMK AO2 SLP217 T02000100
METAR KSEA 152253Z 33010KT 10SM FEW030 FEW250 21/10 A3014 RMK AO2 SLP213 T02060100
METAR KSEA 152353Z 36010KT 10SM FEW030 FEW250 21/10 A3014 RMK AO2 SLP210 T02060100 10211 20167 56011
METAR KSEA 160053Z 35011KT 10SM FEW250 20/10 A3013 RMK AO2 SLP209 T02000100
METAR KSEA 160153Z 34010KT 10SM FEW250 18/09 A3013 RMK AO2 SLP210 T01830094
METAR KSEA 160253Z 01009KT 10SM FEW250 17/09 A3013 RMK AO2 SLP208 T01720094 58003
METAR KSEA 160353Z 34008KT 10SM FEW250 16/10 A3013 RMK AO2 SLP207 T01610100
METAR KSEA 160453Z 34007KT 10SM CLR 16/11 A3011 RMK AO2 SLP203 T01560106
METAR KSEA 160553Z 33004KT 10SM CLR 15/11 A3012 RMK AO2 SLP204 T01500106 10211 20150 55004
METAR KSEA 160653Z 01009KT 10SM CLR 16/11 A3011 RMK AO2 SLP202 T01560106