The National Weather Service Storm Prediction Center’s latest Day 1 convective outlook places a Slight Risk of severe thunderstorms across eastern Ohio into western New York, driven by moderate instability, ample deep-layer shear, and a strengthening low-level jet along a cold front. Tornado probabilities reach only 2% in a corridor including Akron, Canton, Youngstown, and Erie, where clockwise-curving hodographs could briefly support rotation; however, weak lapse rates and a tendency for storms to evolve into linear clusters limit overall tornado potential, favoring damaging winds instead. Official guidance notes that any tornadoes would likely remain weak and isolated. Traders should monitor the next SPC outlook update and short-term mesoscale discussions for shifts in the low-level jet or boundary positioning that could alter localized risk through the evening.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateWhich cities face tornado risk on September 9?
Chicago, IL
5%
Houston, TX
5%
San Antonio, TX
5%
Dallas, TX
5%
Austin, TX
5%
Fort Worth, TX
5%
Columbus, OH
3%
Charlotte, NC
5%
Indianapolis, IN
5%
Denver, CO
5%
Nashville, TN
5%
Oklahoma City, OK
5%
Memphis, TN
5%
Louisville, KY
5%
Atlanta, GA
5%
Kansas City, MO
5%
Omaha, NE
5%
Minneapolis, MN
5%
Wichita, KS
5%
New Orleans, LA
5%
Tampa, FL
5%
St. Louis, MO
5%
Birmingham, AL
5%
Des Moines, IA
5%
Little Rock, AR
5%
$0.00 Vol.
Chicago, IL
5%
Houston, TX
5%
San Antonio, TX
5%
Dallas, TX
5%
Austin, TX
5%
Fort Worth, TX
5%
Columbus, OH
3%
Charlotte, NC
5%
Indianapolis, IN
5%
Denver, CO
5%
Nashville, TN
5%
Oklahoma City, OK
5%
Memphis, TN
5%
Louisville, KY
5%
Atlanta, GA
5%
Kansas City, MO
5%
Omaha, NE
5%
Minneapolis, MN
5%
Wichita, KS
5%
New Orleans, LA
5%
Tampa, FL
5%
St. Louis, MO
5%
Birmingham, AL
5%
Des Moines, IA
5%
Little Rock, AR
5%
The SPC Day 1 Convective Outlook assigns tornado probability percentages (2%, 5%, 10%, etc.) to geographic areas across the US. If the city's coordinates fall inside any area rated 2% or higher, that city resolves "Yes". If a city is outside all tornado probability areas, or only within areas rated below 2%, that city resolves "No".
The SPC outlook is published as machine-readable geographic data (GeoJSON) at spc.noaa.gov. Each city's coordinates and the polygon boundaries are publicly verifiable. Borderline cases can be independently confirmed using the polygon data (excluding the hatched SIGN overlay, which is not a probability rating) and the city's listed coordinates. The point-in-polygon test is performed on unprojected WGS84 (EPSG:4326) coordinates, which is the native coordinate system of the SPC GeoJSON data.
Resolution is based on the scheduled 01:00 UTC Day 1 Convective Outlook update issued on the following UTC calendar day. The SPC Day 1 outlook covers a 24-hour period from 12:00 UTC to 12:00 UTC the following day. Subsequent revisions published after that scheduled update will not be considered. If the SPC Day 1 Convective Outlook has not been published by the time the market closes, this market will resolve to "No".
The resolution source for this market is the NOAA Storm Prediction Center at spc.noaa.gov.
This market uses coordinates 41.8781, -87.6298 for Chicago, IL.
Binuksan ang Market: Sep 9, 2026, 8:13 AM ET
Resolution Source
https://www.spc.noaa.gov/products/outlook/day1otlk.htmlResolver
0x65070BE91...The SPC Day 1 Convective Outlook assigns tornado probability percentages (2%, 5%, 10%, etc.) to geographic areas across the US. If the city's coordinates fall inside any area rated 2% or higher, that city resolves "Yes". If a city is outside all tornado probability areas, or only within areas rated below 2%, that city resolves "No".
The SPC outlook is published as machine-readable geographic data (GeoJSON) at spc.noaa.gov. Each city's coordinates and the polygon boundaries are publicly verifiable. Borderline cases can be independently confirmed using the polygon data (excluding the hatched SIGN overlay, which is not a probability rating) and the city's listed coordinates. The point-in-polygon test is performed on unprojected WGS84 (EPSG:4326) coordinates, which is the native coordinate system of the SPC GeoJSON data.
Resolution is based on the scheduled 01:00 UTC Day 1 Convective Outlook update issued on the following UTC calendar day. The SPC Day 1 outlook covers a 24-hour period from 12:00 UTC to 12:00 UTC the following day. Subsequent revisions published after that scheduled update will not be considered. If the SPC Day 1 Convective Outlook has not been published by the time the market closes, this market will resolve to "No".
The resolution source for this market is the NOAA Storm Prediction Center at spc.noaa.gov.
This market uses coordinates 41.8781, -87.6298 for Chicago, IL.
Resolution Source
https://www.spc.noaa.gov/products/outlook/day1otlk.htmlResolver
0x65070BE91...The National Weather Service Storm Prediction Center’s latest Day 1 convective outlook places a Slight Risk of severe thunderstorms across eastern Ohio into western New York, driven by moderate instability, ample deep-layer shear, and a strengthening low-level jet along a cold front. Tornado probabilities reach only 2% in a corridor including Akron, Canton, Youngstown, and Erie, where clockwise-curving hodographs could briefly support rotation; however, weak lapse rates and a tendency for storms to evolve into linear clusters limit overall tornado potential, favoring damaging winds instead. Official guidance notes that any tornadoes would likely remain weak and isolated. Traders should monitor the next SPC outlook update and short-term mesoscale discussions for shifts in the low-level jet or boundary positioning that could alter localized risk through the evening.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update

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