▌tickfoundry
capture livesign inget the data →
kalshi historical data / climate and weather / KXTROPSTORM
§climate and weather

Number of tropical storms, tick by tick.
Kalshi series KXTROPSTORM: order book and trades, 2026-09-27 → 2026-10-23.

The order-book and trade history of Kalshi's Number of tropical storms series (a new event every year): top of book on every change, the 25-level book on every change in YES terms, every trade with the taker's side, and Kalshi's own ticker, with exchange timestamps to the millisecond. Captured by us from Kalshi's websocket on two independent legs and checked against the exchange's own book snapshots.

27 days2026-09-27 → 2026-10-23 · every day since its first · ~781 kB per day · 21 MB on disk · 8 open markets
pull KXTROPSTORM days →schemapricing

What a KXTROPSTORM day contains

Four parquet files per day, every market of the series in each. Sizes are this series' own averages over its 27 days on disk.

Top of book (every change)kalshi_l1

Best YES bid and ask with sizes and the spread, one row whenever either changed, derived tick by tick from the rebuilt book: not Kalshi's conflated ticker.

~44 kB per KXTROPSTORM day
Order book, 25 levels, every changekalshi_l2

The whole ladder after every book event, in YES terms (the NO bids become the asks, at their sizes), 25 levels a side: wide columns bid_px_1 … ask_sz_25, plus the exchange's own hourly snapshots. Each row is self-contained, so you can start reading mid-day.

~674 kB per KXTROPSTORM day
Tradeskalshi_trades

Every trade: YES and NO price, size in contracts, the taker's side, block-trade flag, trade id.

~10 kB per KXTROPSTORM day
Kalshi ticker (~1 s)kalshi_ticker

Kalshi's own ticker feed, about one update a second per market: last price, YES bid/ask with sizes, cumulative volume and open interest in contracts and dollars.

~52 kB per KXTROPSTORM day

KXTROPSTORM markets

The 8 closing nearest to now, from Kalshi's daily market list. Each is a row key (market_ticker) in every table, captured from the day it opens until it settles.

Will there be more than 10 Atlantic hurricanes in 2026?: Above 10KXTROPSTORM-26DEC01-T10closes 2026-12-02 04:59 UTC
Will there be more than 12 Atlantic hurricanes in 2026?: Above 12KXTROPSTORM-26DEC01-T12closes 2026-12-02 04:59 UTC
Will there be more than 14 Atlantic hurricanes in 2026?: Above 14KXTROPSTORM-26DEC01-T14closes 2026-12-02 04:59 UTC
Will there be more than 16 Atlantic hurricanes in 2026?: Above 16KXTROPSTORM-26DEC01-T16closes 2026-12-02 04:59 UTC
Will there be more than 18 Atlantic hurricanes in 2026?: Above 18KXTROPSTORM-26DEC01-T18closes 2026-12-02 04:59 UTC
Will there be more than 20 Atlantic hurricanes in 2026?: Above 20KXTROPSTORM-26DEC01-T20closes 2026-12-02 04:59 UTC
Will there be more than 25 Atlantic hurricanes in 2026?: Above 25KXTROPSTORM-26DEC01-T25closes 2026-12-02 04:59 UTC
Will there be more than 30 Atlantic hurricanes in 2026?: Above 30KXTROPSTORM-26DEC01-T30closes 2026-12-02 04:59 UTC

Coverage notes for KXTROPSTORM

  • First day on disk: 2026-09-27. That is the day our Kalshi capture began, not the series' launch. New days are added daily.
  • Trades before 2026-09-27. Kalshi's historical API has no tick-level order book, so earlier KXTROPSTORM trades are in the whole-exchange trades history (from 2021-06-30, one file a day): filter market_ticker to this series' markets, which start with KXTROPSTORM-.
  • The first day starts at 11:00 UTC. Our capture began at 11:00 UTC on 27 September 2026: 13 hours that day, not 24, and no CF Benchmarks index file (that capture starts on the 28th).
  • A book-quality dip on 2026-09-29. During a pipeline cutover 10,255 exchange snapshots disagreed with the rebuilt book (41 to 1,378 on every other day) and 16,678 negative levels were clamped to zero. The book resynchronises at every exchange snapshot; trades and ticker are unaffected.
  • Every bundle ships a README with the schemas and, per day, how often the rebuilt book matched the exchange's own snapshots, for your exact range.

Pricing

A month of KXTROPSTORM, every table, is about 23 MB. Bought for Kalshi, Starter ($29/mo) carries top of book, trades and the ticker for every series plus one series of your choice, KXTROPSTORM if you like, at full book depth; L10 ($49/mo) carries every series' book at 10 levels and L25 ($99/mo) the full 25-level book. Each includes 7 days before you join and every day after. Any free account can pull 2026-10-07, any series, up to 1.0 GB.

Starter: KXTROPSTORM at full depth →L10: every series at 10 levelsL25: every series, 25 levelsfree sample day

Other climate and weather series on Kalshi

Where will it rain dailyHourly Directional Miami TemperatureHourly Directional Coastal LA TemperatureHourly Directional NYC TemperatureHourly Directional Chicago Metro TemperatureHighest temperature in ChicagoHighest temperature in Los AngelesLas Vegas Daily Low TemperatureSan Francisco High Temperature DailyAtlanta Max TemperatureHighest temperature in NYCBoston Maximum Daily TemperatureHighest temperature in MiamiMinneapolis Daily High TemperatureOklahoma City Maximum High TemperatureHighest temperature in AustinWhere will it rain this weekend?Highest temperature in DenverPhoenix High Temperature DailyLowest temperature in Denver… the whole venue