UPDATED Nov. 3, 2020, at 11:35 AM

Where The Latest COVID-19 Models Think We're Headed — And Why They Disagree

Models predicting the potential spread of the COVID-19 pandemic have become a fixture of American life. Yet each model tells a different story about the loss of life to come, making it hard to know which one is “right.” But COVID-19 models aren’t made to be unquestioned oracles. They’re not trying to tell us one precise future, but rather the range of possibilities given the facts on the ground.

One of their more sober tasks is predicting the number of Americans who will die due to COVID-19. FiveThirtyEight — with the help of data compiled by the COVID-19 Forecast Hub — has assembled 13 models published by scientists to illustrate possible trajectories of the pandemic’s death toll. In doing so, we hope to make them more accessible, as well as highlight how the assumptions underlying the models can lead to vastly different estimates. Here are the models’ U.S. fatality projections for the coming weeks.

Forecasts like these are useful because they help us understand the most likely outcomes as well as best- and worst-case possibilities — and they can help policymakers make decisions that can lead us closer to those best-case outcomes.

And looking at multiple models is better than looking at just one because it's difficult to know which model will match reality the closest. Even when models disagree, understanding why they are different can give us valuable insight.

Coronavirus is hard to understand. FiveThirtyEight can help.

How do the models differ?

Each model makes different assumptions about properties of the novel coronavirus, such as how infectious it is and the rate at which people die once infected. They also use different types of math behind the scenes to make their projections. And perhaps most importantly, they make different assumptions about the amount of contact we should expect between people in the near future.

Understanding the underlying assumptions that each model is currently using can help us understand why some forecasts are more optimistic or pessimistic than others.

    State-by-state breakdown

    Below are individual forecasts for all 50 states and the District of Columbia.

    Alabama

    2,973 deaths as of Nov. 2

    Alaska

    84 deaths

    Arizona

    5,982 deaths

    Arkansas

    1,985 deaths

    California

    17,689 deaths

    Colorado

    2,292 deaths

    Connecticut

    4,627 deaths

    Delaware

    710 deaths

    District of Columbia

    647 deaths

    Florida

    16,834 deaths

    Georgia

    7,999 deaths

    Hawaii

    219 deaths

    Idaho

    632 deaths

    Illinois

    10,093 deaths

    Indiana

    4,390 deaths

    Iowa

    1,756 deaths

    Kansas

    1,045 deaths

    Kentucky

    1,492 deaths

    Louisiana

    5,934 deaths

    Maine

    148 deaths

    Maryland

    4,155 deaths

    Massachusetts

    10,023 deaths

    Michigan

    7,716 deaths

    Minnesota

    2,538 deaths

    Mississippi

    3,348 deaths

    Missouri

    3,043 deaths

    Montana

    386 deaths

    Nebraska

    656 deaths

    Nevada

    1,784 deaths

    New Hampshire

    483 deaths

    New Jersey

    16,357 deaths

    New Mexico

    1,036 deaths

    New York

    33,539 deaths

    North Carolina

    4,390 deaths

    North Dakota

    540 deaths

    Ohio

    5,340 deaths

    Oklahoma

    1,354 deaths

    Oregon

    692 deaths

    Pennsylvania

    8,812 deaths

    Rhode Island

    1,210 deaths

    South Carolina

    3,946 deaths

    South Dakota

    438 deaths

    Tennessee

    3,379 deaths

    Texas

    18,534 deaths

    Utah

    614 deaths

    Vermont

    58 deaths

    Virginia

    3,658 deaths

    Washington

    2,378 deaths

    West Virginia

    461 deaths

    Wisconsin

    2,050 deaths

    Wyoming

    97 deaths

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