SimpleFunctions
15 source contracts·Kalshi 15·refreshed just now·Closes Dec 1, 2026 · 131d

Will Norbert be categorized as a hurricane in the Eastern Pacific in 2026

Liquidity-weighted aggregate sits at 39% across 15 Kalshi contracts.

Implied probability

39%
0%50%100%

Kalshi

39%

15 contracts

Polymarket

not bound

Cross-venue gap

single venue

24h move

no pin

24h volume

$456

15 contracts

Closes

Dec 1, 2026

131 days

30-day trend

0%50%100%-30d-3w-2w-1wtodayAggregate: 39% (22 days, 22 points)Aggregate: 39% on 2026-07-23
Aggregate of 15 contracts · 22d

Bracket families

15 clusters across 15 contracts.

These contracts were grouped by title similarity. The headline aggregate combines all clusters; verify the cluster you actually need before quoting a number.

Cluster 1

Will Leah be categorized as a hurricane in the Atlantic in 2026

1 contract$247

Cluster 2

Will Gonzalo be categorized as a hurricane in the Atlantic in 2026

1 contract$200

Cluster 3

Will Josephine be categorized as a hurricane in the Atlantic in 2026

1 contract$4

Cluster 4

Will Genevieve be categorized as a hurricane in the Eastern Pacific in 2026

1 contract$2

Cluster 5

Will Kyle be categorized as a hurricane in the Atlantic in 2026

1 contract$1

Cluster 6

Will Marco be categorized as a hurricane in the Atlantic in 2026

1 contract$1

Cluster 7

Will Norbert be categorized as a hurricane in the Eastern Pacific in 2026

1 contract$1

Cluster 8

Will Cristobal be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Cluster 9

Will Dolly be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Cluster 10

Will Edouard be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Cluster 11

Will Fay be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Cluster 12

Will Hanna be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Cluster 13

Will Isaias be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Cluster 14

Will Nana be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Cluster 15

Will Paulette be categorized as a hurricane in the Atlantic in 2026

1 contract$0

Analysis

This market assesses whether tropical cyclone Norbert will reach hurricane strength while located in the Eastern Pacific Ocean during the 2026 Atlantic hurricane season. The 20% probability reflects base rates for named storms in this region and typical seasonal patterns. Hurricane development depends primarily on ocean temperatures and atmospheric conditions that support intensification. The market will resolve based on official National Hurricane Center classifications, which provide real-time updates throughout the season. Norbert's current trajectory and any emerging weather patterns over the next 1-2 months will be the main factors determining whether conditions favor rapid intensification to hurricane-force winds (sustained speeds of 74+ mph). Historical data on similar storm tracks and seasonal water temperatures in the Eastern Pacific will anchor trader expectations until Norbert's actual formation and movement become apparent.

  • Eastern Pacific ocean surface temperatures in summer 2026 relative to 30-year averages, which directly influence storm intensification potential
  • Atmospheric instability indices (wind shear, humidity, pressure patterns) forecasted for Norbert's predicted track
  • Historical frequency of named storms reaching hurricane status in the Eastern Pacific during June-November periods
  • National Hurricane Center official classifications and sustained wind speed measurements once Norbert forms and develops
  • Seasonal forecast confidence levels from NOAA and other meteorological agencies for 2026 Atlantic basin activity

What moved the line

  • Jul 21Nana64pp9531¢ · Kalshi
  • Jul 21Genevieve48pp6921¢ · Kalshi
  • Jul 17Marco42pp508¢ · Kalshi
  • Jul 22Hanna39pp423¢ · Kalshi
  • Jul 18Isaias34pp6228¢ · Kalshi

Recently closed in climate

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

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