KSEA - Seattle-Tacoma Intl, WA, US
| Potential Impact | None | Slight | Moderate | High |
| Time | 17/01Z | 17/02Z | 17/03Z | 17/04Z | 17/05Z | 17/06Z | 17/07Z | 17/08Z | 17/09Z | 17/10Z | 17/11Z | 17/12Z | 17/13Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp | 54 | 54 | 53 | 53 | 54 | 53 | 54 | 52 | 52 | 51 | 50 | ||
| Dewpt | 53 | 52 | 52 | 52 | 52 | 52 | 51 | 51 | 51 | 48 | 47 | ||
| Altim | 1001.1 | 1001.1 | 1001.1 | 1001.4 | 1001.4 | 1002.1 | 1002.8 | 1002.8 | 1003.1 | 1003.8 | 1004.8 | ||
| VIS | 10+ | 10+ | 10+ | 10+ | 10+ | 10+ | 7 | 10+ | 10+ | 10+ | 10+ | ||
| CIG | 1100 | 4900 | 5500 | 4600 | 4600 | 5500 | 1500 | 700 | 700 | 4000 | 1400 | ||
| Cover | OVC | BKN | BKN | OVC | OVC | OVC | OVC | OVC | OVC | OVC | OVC | ||
| FltCat | MVFR | VFR | VFR | VFR | VFR | VFR | MVFR | IFR | IFR | VFR | MVFR | ||
| WX | -- | -- | -- | -- | -- | -- | -RA | -RA | -- | -- | -- | ||
| WDir | 170 | 150 | 170 | 170 | 160 | 240 | 210 | 190 | 210 | 220 | 260 | ||
| WSpd | 7 | 7 | 5 | 4 | 6 | 3 | 9 | 7 | 8 | 6 | 5 | ||
| WGst | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
METAR KSEA 170053Z 17007KT 10SM FEW005 BKN011 OVC019 12/12 A2956 RMK AO2 RAE52 SLP016 P0000 T01220117 $
METAR KSEA 170153Z 15007KT 10SM BKN049 12/11 A2956 RMK AO2 SLP016 T01220111 $
METAR KSEA 170253Z 17005KT 10SM FEW007 BKN055 12/11 A2956 RMK AO2 SLP015 60000 T01170111 51003 $
METAR KSEA 170353Z 17004KT 10SM BKN046 OVC090 12/11 A2957 RMK AO2 SLP017 T01170111 $
METAR KSEA 170453Z 16006KT 10SM OVC046 12/11 A2957 RMK AO2 SLP019 T01220111 $
METAR KSEA 170553Z 24003KT 10SM FEW041 OVC055 12/11 A2959 RMK AO2 SLP026 60000 T01170111 10122 20117 53010 $
METAR KSEA 170653Z 21009KT 7SM -RA FEW009 BKN015 OVC041 12/11 A2961 RMK AO2 RAB50 SLP032 P0000 T01220106 $
METAR KSEA 170753Z 19007KT 10SM -RA BKN007 OVC020 11/11 A2961 RMK AO2 SLP034 P0000 T01110106 401280106 $
METAR KSEA 170853Z 21008KT 10SM BKN007 OVC035 11/11 A2962 RMK AO2 RAE48 SLP037 P0001 60001 T01110106 51012 $
METAR KSEA 170953Z 22006KT 10SM SCT008 BKN040 OVC090 11/09 A2964 RMK AO2 SLP044 T01060089 $
METAR KSEA 171053Z 26005KT 10SM SCT007 BKN014 OVC036 10/08 A2967 RMK AO2 SLP054 T01000083 $