Station-day record · settlement source
Seattle · America/Los_Angeles · ← 2026-10-17 · 2026-10-19 → · All dates for KSEA · JSON
METAR KSEA 182253Z 34006KT 10SM FEW080 BKN230 15/06 A3004 RMK AO2 SLP180 T01500056 $
SPECI KSEA 181432Z 34004KT 1/2SM R16L/1200VP6000FT FG VV001 06/06 A3019 RMK AO2 T00610061 $
Local day 2026-10-18 03:00 EDT → 2026-10-19 03:00 EDT (24 h, UTC-07:00) · 33 reports · longest gap 120 min
High 60°F (15.56°C) · Low 43°F (6.11°C) · NWS CLI archive
US markets usually settle on the official NWS daily climate value (CLI), which is archived separately; the two values can differ by about a degree and are shown side by side.
final at 2026-10-19 06:00 EDT · correction hold 3 h after local midnight
longest gap 120 min · limit 90 min
SHA-256 d3d7c6cbf457f473ec2161587d164ae93b6838b8df30769368add93f9fb198fd
Transaction 0x4ae62783c94956b0a8fb8ac3868e725c4ba0ad761453422d265885bc1dab8567 · 2026-10-19 06:02 EDT
GET the record bytes, SHA-256 them, and call SnapshotAnchor.isAnchored(sha256) on Flare - the anchored record is the one to settle on
Canonical record bytes (hash these) · SnapshotAnchor 0x2B598129… (chain 14)
good 33 · suspect 0 · bad 0 · High good · Low good
Flags are attached beside the anchored record and are not part of its bytes; the record's extremes are unchanged. A suspect extreme is usable but worth checking against the raw text (extremes.*.reasons); a bad report is physically impossible and excludingBad shows the extremes without it.
| Time | Type | Temp °C | Dew °C | Wind m/s | Raw report |
|---|---|---|---|---|---|
| 2026-10-18 03:53 EDT | METAR | 10° | 5.6° | 5.7 | METAR KSEA 180753Z 06011KT 10SM CLR 10/06 A3024 RMK AO2 SLP246 T01000056 401670094 |
| 2026-10-18 04:53 EDT | METAR | 9.4° | 5.6° | 4.1 | METAR KSEA 180853Z 07008KT 10SM CLR 09/06 A3023 RMK AO2 SLP244 T00940056 58004 |
| 2026-10-18 05:53 EDT | METAR | 8.9° | 5° | 2.6 | METAR KSEA 180953Z 06005KT 10SM CLR 09/05 A3022 RMK AO2 SLP241 T00890050 |
| 2026-10-18 06:53 EDT | METAR | 8.9° | 5.6° | 3.1 | METAR KSEA 181053Z 06006KT 10SM CLR 09/06 A3021 RMK AO2 SLP237 T00890056 |
| 2026-10-18 07:53 EDT | METAR | 7.8° | 5.6° | 3.1 | METAR KSEA 181153Z 03006KT 10SM CLR 08/06 A3021 RMK AO2 SLP235 T00780056 10111 20078 56008 |
| 2026-10-18 08:53 EDT | METAR | 7.2° | 5.6° | 1.5 | METAR KSEA 181253Z 34003KT 10SM CLR 07/06 A3020 RMK AO2 SLP234 T00720056 $ |
| 2026-10-18 09:47 EDT | SPECI | 7° | 6° | 1.5 | SPECI KSEA 181347Z 02003KT 9SM SCT001 SCT010 07/06 A3020 RMK AO2 $ |
| 2026-10-18 09:53 EDT | METAR | 7.2° | 6.7° | 2.1 | METAR KSEA 181353Z 04004KT 7SM BCFG SCT001 SCT010 07/07 A3019 RMK AO2 SLP232 T00720067 $ |
| 2026-10-18 09:59 EDT | SPECI | 7.2° | 6.7° | 2.6 | SPECI KSEA 181359Z 04005KT 3SM BR BKN001 07/07 A3019 RMK AO2 T00720067 $ |
| 2026-10-18 10:21 EDT | SPECI | 6.7° | 6.7° | 2.1 | SPECI KSEA 181421Z 01004KT 1 1/2SM R16L/3500VP6000FT BR BKN001 07/07 A3019 RMK AO2 T00670067 $ |
| 2026-10-18 10:32 EDT | SPECI | 6.1°min | 6.1° | 2.1 | SPECI KSEA 181432Z 34004KT 1/2SM R16L/1200VP6000FT FG VV001 06/06 A3019 RMK AO2 T00610061 $ |
| 2026-10-18 10:40 EDT | SPECI | 6.1° | 6.1° | 1.5 | SPECI KSEA 181440Z 33003KT 1/4SM R16L/1200V1400FT FG VV001 06/06 A3019 RMK AO2 T00610061 $ |
| 2026-10-18 10:44 EDT | SPECI | 6.1° | 6.1° | 0 | SPECI KSEA 181444Z 00000KT 2SM R16L/1200V1400FT BR BKN001 BKN070 06/06 A3019 RMK AO2 T00610061 $ |
| 2026-10-18 10:53 EDT | METAR | 6.1° | 6.1° | 2.1 | METAR KSEA 181453Z 04004KT 3SM R16L/1200VP6000FT BR SCT001 BKN005 BKN060 06/06 A3019 RMK AO2 SLP230 T00610061 56006 $ |
| 2026-10-18 11:21 EDT | SPECI | 6.7° | 6.1° | 2.6 | SPECI KSEA 181521Z 05005KT 1/2SM R16L/1400VP6000FT FG VV002 07/06 A3018 RMK AO2 T00670061 $ |
| 2026-10-18 11:33 EDT | SPECI | 6.7° | 6.1° | 3.1 | SPECI KSEA 181533Z 03006KT 1/4SM R16L/1000VP6000FT FG VV001 07/06 A3019 RMK AO2 T00670061 $ |
| 2026-10-18 11:53 EDT | METAR | 7.2° | 6.1° | 2.1 | METAR KSEA 181553Z 06004KT 2SM BR BKN001 BKN100 07/06 A3019 RMK AO2 SLP229 T00720061 $ |
| 2026-10-18 12:41 EDT | SPECI | 7.8° | 6.7° | 2.1 | SPECI KSEA 181641Z VRB04KT 7SM BKN001 BKN100 08/07 A3019 RMK AO2 T00780067 $ |
| 2026-10-18 12:45 EDT | SPECI | 7.8° | 6.7° | 2.6 | SPECI KSEA 181645Z VRB05KT 9SM SCT001 SCT010 BKN110 08/07 A3019 RMK AO2 T00780067 $ |
| 2026-10-18 12:53 EDT | METAR | 7.8° | 6.7° | 2.1 | METAR KSEA 181653Z 35004KT 10SM FEW001 SCT010 BKN110 08/07 A3018 RMK AO2 SLP229 T00780067 $ |
| 2026-10-18 13:53 EDT | METAR | 11.1° | 6.1° | 3.6 | METAR KSEA 181753Z 01007KT 10SM FEW005 FEW010 SCT160 11/06 A3017 RMK AO2 SLP224 T01110061 10111 20061 58006 $ |
| 2026-10-18 14:53 EDT | METAR | 12.8° | 5° | 3.6 | METAR KSEA 181853Z 01007KT 10SM FEW010 SCT200 13/05 A3015 RMK AO2 SLP217 T01280050 $ |
| 2026-10-18 15:53 EDT | METAR | 13.9° | 5° | 3.6 | METAR KSEA 181953Z 01007KT 10SM FEW060 BKN210 14/05 A3013 RMK AO2 SLP208 T01390050 $ |
| 2026-10-18 16:53 EDT | METAR | 14.4° | 5.6° | 4.6 | METAR KSEA 182053Z 03009KT 10SM FEW080 BKN230 14/06 A3009 RMK AO2 SLP197 T01440056 58026 $ |
| 2026-10-18 17:53 EDT | METAR | 14.4° | 6.1° | 3.6 | METAR KSEA 182153Z 36007KT 10SM FEW080 BKN230 14/06 A3007 RMK AO2 SLP187 T01440061 $ |
| 2026-10-18 18:53 EDT | METAR | 15°max | 5.6° | 3.1 | METAR KSEA 182253Z 34006KT 10SM FEW080 BKN230 15/06 A3004 RMK AO2 SLP180 T01500056 $ |
| 2026-10-18 19:53 EDT | METAR | 13.9° | 6.1° | 4.1 | METAR KSEA 182353Z 35008KT 10SM FEW080 BKN230 14/06 A3003 RMK AO2 SLP174 T01390061 10156 20106 56022 $ |
| 2026-10-18 20:53 EDT | METAR | 12.2° | 6.7° | 3.1 | METAR KSEA 190053Z 35006KT 10SM FEW080 BKN230 12/07 A3000 RMK AO2 SLP166 T01220067 $ |
| 2026-10-18 21:53 EDT | METAR | 10.6° | 7.2° | 3.6 | METAR KSEA 190153Z 36007KT 10SM BKN230 11/07 A2999 RMK AO2 SLP162 T01060072 $ |
| 2026-10-18 22:53 EDT | METAR | 9.4° | 7.8° | 3.6 | METAR KSEA 190253Z 34007KT 10SM FEW080 BKN230 09/08 A2998 RMK AO2 SLP161 T00940078 56016 $ |
| 2026-10-18 23:53 EDT | METAR | 9.4° | 7.8° | 3.6 | METAR KSEA 190353Z 01007KT 10SM BKN170 09/08 A2997 RMK AO2 SLP156 T00940078 $ |
| 2026-10-19 00:53 EDT | METAR | 10° | 7.2° | 3.1 | METAR KSEA 190453Z 35006KT 10SM BKN170 10/07 A2997 RMK AO2 SLP156 T01000072 $ |
| 2026-10-19 02:53 EDT | METAR | 10° | 7.2° | 3.1 | METAR KSEA 190653Z 03006KT 10SM BKN170 OVC220 10/07 A2995 RMK AO2 SLP148 T01000072 $ |
Settlement source: the METAR-derived station-day record for KSEA for the contract date (station-local calendar day), as published at https://weathermarket.io/station/KSEA/2026-10-18 with every observation used, the finality status and the Flare anchor of the record. The daily value is the extreme over the hourly and special METAR reports in that day; a short-lived peak between reports may be missed. If the record is not final and settleable by the resolution deadline, the market is flagged for review.
Station-day record: the daily extremes over every METAR observation (hourly plus special reports) received for the station's local calendar day - local midnight to local midnight, daylight saving applied. Temperatures are whole degrees Celsius as reported in METAR; a short-lived peak between reports can be missed. This is not a model or an aggregate - every value points at the report that produced it, and every report in the day is listed verbatim.
The settlement value is the daily maximum (or minimum) of this record once it is final: the local day has ended and the 3-hour correction hold has passed. A day whose longest gap between reports exceeds the station's normal interval plus 30 minutes is final but flagged not settleable - a market should treat it as a review case. Once final, the canonical record bytes are hashed (SHA-256) and the hash is written to the SnapshotAnchor contract on Flare; the anchored record is the settlement record even if reports change afterwards (matchesCurrent then reads false). US markets usually settle on the official NWS CLI value instead - see the NWS CLI archive for this station; both values are shown side by side.
Every METAR in the day is listed with its raw text; compare it with the independent archives linked under links.external (IEM ASOS archive, Ogimet).
GET links.record for the canonical record bytes, SHA-256 them and compare with anchor.sha256; call SnapshotAnchor.isAnchored(sha256) on Flare (anchor.contract, anchor.chainId) to confirm the hash is on-chain. anchor.explorer opens the anchoring transaction.
Permalink pattern for market rules: https://weathermarket.io/station/KSEA/YYYY-MM-DD (HTML) and https://weathermarket.io/api/station/KSEA/YYYY-MM-DD (JSON).