各州极端干旱（D4）情况——2026年10月20日当周

This market will resolve to "Yes" for each listed state that has D4 (Exceptional Drought) on 0.05% or more of its land area in the US Drought Monitor release for the week of October 20, 2026. Otherwise, this market will resolve to "No". D4 area below 0.05% is treated as cartographic noise at state borders and resolves "No". States appear only during the months in which they plausibly reach D4, so this event's roster changes through the year. 40 of the 48 coterminous states are in season for October: Alabama, Arizona, Arkansas, California, Colorado, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin, Wyoming. A state absent from this event is not making any claim about that state's drought — it simply has no market this week. Each USDM release covers the seven-day period ending Tuesday at 8:00 AM ET and is published the following Thursday. Resolution is based on the first published US Drought Monitor release for the listed week. The first published release is final, and that publication is the revisions cutoff; subsequent revisions will not be considered. In the case that the Resolution Source publishes data, sufficient to settle a Market, that is clearly erroneous and the result of technical or operational error, or of unauthorized interference with the Resolution Source or its data, the Market may remain open for a period of up to seven (7) calendar days (ET) from the time of the original release, in anticipation of a correction by the Resolution Source. If the Resolution Source publishes a corrected value within that period, that value will be eligible for resolution. If no corrected value is published within that period, Polymarket will issue a Clarification to determine whether the originally published value may be eligible for resolution, or whether other action is required to preserve the orderly functioning of the Market. Revisions remain subject to the cutoff above. The only exception is a correction of a clearly erroneous print under the preceding paragraph, which will be used even if published after the cutoff. If the US Drought Monitor has not been published by 11:59 PM ET on the day following the scheduled publication date, this market will resolve to "No". The resolution source for this market is the US Drought Monitor at droughtmonitor.unl.edu.