Traders view the three bins for peak September wind gusts in Wellington as nearly equiprobable, underscoring forecast uncertainty for the Southern Hemisphere spring. Wellington’s location astride the Cook Strait and within the Roaring Forties exposes it to frequent strong westerlies channeled by regional topography. Primary drivers include the phase of the Southern Annular Mode, which modulates mid-latitude storm tracks, and any evolving ENSO conditions that alter Tasman Sea low-pressure systems. Official guidance from MetService and ECMWF ensemble runs shows broad spreads in projected maximum gusts, with resolution hinging on whether transient cyclones produce isolated events exceeding 102 km/h or remain closer to climatological September norms around 90 km/h. Updated seasonal outlooks and intra-month model runs will refine these probabilities.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jourPic de rafales de vent dans la ville la plus venteuse du monde en septembre
89 km/h or below 50%
90 to 101 km/h 50%
102 km/h or above 50%
89 km/h or below
50%
90 to 101 km/h
50%
102 km/h or above
50%
89 km/h or below 50%
90 to 101 km/h 50%
102 km/h or above 50%
89 km/h or below
50%
90 to 101 km/h
50%
102 km/h or above
50%
The resolution source for this market is the gust value in the wind group of NZWN's raw METAR/SPECI observations, encoded in knots (for example, "34020G45KT" denotes a 45-knot gust), as archived by the Iowa Environmental Mesonet (IEM) for station NZWN in network NF__ASOS ("New Zealand ASOS"). Gust speed is converted from knots using 1 kt = 1.852 km/h, rounded half-up to the nearest whole number. Because gusts are reported in whole knots, no observed gust converts to a value on a bracket boundary, so every observation maps to exactly one range.
The month's highest gust can be located via the IEM Data Calendar for NZWN: https://mesonet.agron.iastate.edu/sites/hist.phtml?network=NF__ASOS&year=2026&month=9&mode=monthly&station=NZWN. Each calendar day displays that day's peak gust inline; clicking a day's date opens the daily Summary for NF__ASOS, where the Peak Gust column in the NZWN (Wellington) row shows the day's maximum. Ensure station NZWN is selected, as the NF__ASOS network includes other New Zealand stations. Note that the IEM calendar and summary pages display gusts in mph; resolution is based on the knot value in the underlying raw METAR, which IEM archives alongside each parsed observation and which can be used to independently verify any value.
If any observations are missing or unavailable, this market will resolve to the range containing the highest gust reported during the resolution window. Should the IEM archive be unavailable or discontinued, this market will resolve based on the equivalent raw METAR/SPECI observations for NZWN from another credible archive or the original reporting authority.
Marché ouvert : Aug 31, 2026, 9:46 AM ET
The resolution source for this market is the gust value in the wind group of NZWN's raw METAR/SPECI observations, encoded in knots (for example, "34020G45KT" denotes a 45-knot gust), as archived by the Iowa Environmental Mesonet (IEM) for station NZWN in network NF__ASOS ("New Zealand ASOS"). Gust speed is converted from knots using 1 kt = 1.852 km/h, rounded half-up to the nearest whole number. Because gusts are reported in whole knots, no observed gust converts to a value on a bracket boundary, so every observation maps to exactly one range.
The month's highest gust can be located via the IEM Data Calendar for NZWN: https://mesonet.agron.iastate.edu/sites/hist.phtml?network=NF__ASOS&year=2026&month=9&mode=monthly&station=NZWN. Each calendar day displays that day's peak gust inline; clicking a day's date opens the daily Summary for NF__ASOS, where the Peak Gust column in the NZWN (Wellington) row shows the day's maximum. Ensure station NZWN is selected, as the NF__ASOS network includes other New Zealand stations. Note that the IEM calendar and summary pages display gusts in mph; resolution is based on the knot value in the underlying raw METAR, which IEM archives alongside each parsed observation and which can be used to independently verify any value.
If any observations are missing or unavailable, this market will resolve to the range containing the highest gust reported during the resolution window. Should the IEM archive be unavailable or discontinued, this market will resolve based on the equivalent raw METAR/SPECI observations for NZWN from another credible archive or the original reporting authority.
Traders view the three bins for peak September wind gusts in Wellington as nearly equiprobable, underscoring forecast uncertainty for the Southern Hemisphere spring. Wellington’s location astride the Cook Strait and within the Roaring Forties exposes it to frequent strong westerlies channeled by regional topography. Primary drivers include the phase of the Southern Annular Mode, which modulates mid-latitude storm tracks, and any evolving ENSO conditions that alter Tasman Sea low-pressure systems. Official guidance from MetService and ECMWF ensemble runs shows broad spreads in projected maximum gusts, with resolution hinging on whether transient cyclones produce isolated events exceeding 102 km/h or remain closer to climatological September norms around 90 km/h. Updated seasonal outlooks and intra-month model runs will refine these probabilities.
Résumé expérimental généré par IA à partir des données Polymarket. Ceci n'est pas un conseil de trading et ne joue aucun rôle dans la résolution de ce marché. · Mis à jour

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