Persistent low pressure over the central Appalachians and Mid-Atlantic, combined with Gulf moisture and an inverted trough, is driving scattered showers and thunderstorms across the eastern U.S. on September 22, with 70-80% rain chances and localized heavy totals possible in West Virginia, Virginia, and the Carolinas per Weather Prediction Center guidance. A separate moderate excessive rainfall risk from Pacific moisture and upper-level energy affects the Southwest and southern Rockies, while a mid-to-upper trough supports heavy rain across Central America, Jamaica, and Cuba. NOAA and NHC analyses highlight these mesoscale features, with high-resolution models showing 3-6 inch localized amounts where instability peaks. Traders should monitor real-time surface observations and updated QPF discussions, as small shifts in frontal position or convective timing can alter measurable precipitation outcomes by resolution criteria.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWhere will it rain on September 22?
New York, NY
67%
Los Angeles, CA
1%
Chicago, IL
50%
Houston, TX
50%
Dallas, TX
3%
Phoenix, AZ
4%
Philadelphia, PA
92%
Denver, CO
19%
Washington, DC
75%
Atlanta, GA
71%
Miami, FL
92%
Seattle, WA
11%
Boston, MA
6%
New Orleans, LA
50%
San Francisco, CA
5%
$1,559 Vol.
New York, NY
67%
Los Angeles, CA
1%
Chicago, IL
50%
Houston, TX
50%
Dallas, TX
3%
Phoenix, AZ
4%
Philadelphia, PA
92%
Denver, CO
19%
Washington, DC
75%
Atlanta, GA
71%
Miami, FL
92%
Seattle, WA
11%
Boston, MA
6%
New Orleans, LA
50%
San Francisco, CA
5%
Measurable precipitation means 0.01 inches or more as reported by the PRECIPITATION (IN) figure in the NWS Daily Climate Report (CLI) for the city's station.
A report of trace ("T") does not qualify.
The PRECIPITATION (IN) figure measures total liquid-equivalent precipitation and does not distinguish between precipitation types.
The observation period is the NWS climate day for KNYC: midnight to midnight local standard time. The final CLI report for a climate day is issued the following morning.
This market will resolve according to the NWS Daily Climate Report as published by 2:00 PM ET on the day following the observation date. If multiple versions of the report are issued, the last version published before that time governs. If no figure has been published by that time, this market will resolve to "No".
The resolution source for this market is the NWS Daily Climate Report (CLI) for KNYC, published at https://forecast.weather.gov/product.php?site=NWS&product=CLI&issuedby=NYC.
Market Opened: Sep 21, 2026, 7:09 AM ET
Resolver
0x65070BE91...Measurable precipitation means 0.01 inches or more as reported by the PRECIPITATION (IN) figure in the NWS Daily Climate Report (CLI) for the city's station.
A report of trace ("T") does not qualify.
The PRECIPITATION (IN) figure measures total liquid-equivalent precipitation and does not distinguish between precipitation types.
The observation period is the NWS climate day for KNYC: midnight to midnight local standard time. The final CLI report for a climate day is issued the following morning.
This market will resolve according to the NWS Daily Climate Report as published by 2:00 PM ET on the day following the observation date. If multiple versions of the report are issued, the last version published before that time governs. If no figure has been published by that time, this market will resolve to "No".
The resolution source for this market is the NWS Daily Climate Report (CLI) for KNYC, published at https://forecast.weather.gov/product.php?site=NWS&product=CLI&issuedby=NYC.
Resolver
0x65070BE91...Persistent low pressure over the central Appalachians and Mid-Atlantic, combined with Gulf moisture and an inverted trough, is driving scattered showers and thunderstorms across the eastern U.S. on September 22, with 70-80% rain chances and localized heavy totals possible in West Virginia, Virginia, and the Carolinas per Weather Prediction Center guidance. A separate moderate excessive rainfall risk from Pacific moisture and upper-level energy affects the Southwest and southern Rockies, while a mid-to-upper trough supports heavy rain across Central America, Jamaica, and Cuba. NOAA and NHC analyses highlight these mesoscale features, with high-resolution models showing 3-6 inch localized amounts where instability peaks. Traders should monitor real-time surface observations and updated QPF discussions, as small shifts in frontal position or convective timing can alter measurable precipitation outcomes by resolution criteria.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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