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Impacts METAR Board
KSEA - Seattle-Tacoma Intl, WA, US
Updated at: 0300 UTC 20 Aug 2018
| Potential Impact | None | Slight | Moderate | High |
| Time | 19/15Z | 19/16Z | 19/17Z | 19/18Z | 19/19Z | 19/20Z | 19/21Z | 19/22Z | 19/23Z | 20/00Z | 20/01Z | 20/02Z | 20/03Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp | 63 | 66 | 67 | 70 | 72 | 74 | 75 | 79 | 79 | 79 | 76 | 74 | 69 |
| Dewpt | 55 | 56 | 56 | 56 | 55 | 57 | 56 | 56 | 56 | 53 | 53 | 52 | 54 |
| Altim | 30.11 | 30.11 | 30.10 | 30.10 | 30.09 | 30.07 | 30.06 | 30.04 | 30.03 | 30.02 | 30.01 | 30.01 | 30.02 |
| VIS | 8 | 10 | 10 | 10 | 10 | 7 | 6 | 7 | 3 | 1.5 | 1.5 | 1.5 | 1.5 |
| CIG | -- | -- | -- | -- | -- | -- | -- | -- | -- | 30 | -- | 19 | 31 |
| Cover | CLR | CLR | CLR | CLR | CLR | CLR | CLR | FEW | SCT | OVC | SCT | BKN | BKN |
| FltCat | VFR | VFR | VFR | VFR | VFR | VFR | VFR | VFR | MVFR | IFR | IFR | IFR | IFR |
| WX | -- | -- | -- | -- | -- | -- | HZ FU | -- | HZ FU | HZ FU | HZ FU | HZ FU | HZ FU |
| WDir | 340 | 20 | 280 | 300 | 300 | 290 | 280 | 310 | 350 | 10 | 350 | 340 | 300 |
| WSpd | 3 | 3 | 4 | 6 | 8 | 8 | 9 | 8 | 7 | 11 | 11 | 5 | 4 |
| WGst | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
KSEA 191453Z 34003KT 8SM CLR 17/13 A3011 RMK AO2 SLP202 T01720128 53004KSEA 191553Z 02003KT 10SM CLR 19/13 A3011 RMK AO2 SLP200 T01890133KSEA 191653Z 28004KT 10SM CLR 19/13 A3010 RMK AO2 SLP198 T01940133KSEA 191753Z 30006KT 10SM CLR 21/13 A3010 RMK AO2 SLP197 T02110133 10211 20144 56005KSEA 191853Z 30008KT 10SM CLR 22/13 A3009 RMK AO2 SLP193 T02220128KSEA 191953Z 29008KT 7SM CLR 23/14 A3007 RMK AO2 SLP187 T02330139KSEA 192053Z 28009KT 6SM HZ FU CLR 24/13 A3006 RMK AO2 SLP183 T02390133 58014KSEA 192153Z 31008KT 7SM FEW043 26/13 A3004 RMK AO2 SLP178 T02610133KSEA 192253Z 35007KT 3SM HZ FU SCT032 26/13 A3003 RMK AO2 SLP173 FU SCT032 T02610133KSEA 192353Z 01011KT 1 1/2SM HZ FU OVC030 26/12 A3002 RMK AO2 TWR VIS 2 1/2 SLP169 FU OVC030 T02610117 10267 20206 56014KSEA 200053Z 35011KT 1 1/2SM HZ FU SCT038 24/12 A3001 RMK AO2 TWR VIS 2 1/2 SLP168 FU SCT038 T02440117KSEA 200153Z 34005KT 1 1/2SM HZ FU BKN019 23/11 A3001 RMK AO2 TWR VIS 2 1/2 SLP166 FU BKN019 T02330111KSEA 200304Z 30004KT 1 1/2SM HZ FU BKN031 21/12 A3002 RMK AO2 TWR VIS 2 1/2 FU BKN031 T02060122