This document contains COVID-19 projections for several US states and counties as of March 28, 2020. It includes graphs showing actual data points and predicted trend lines, along with doubling times. Projections are provided for New York City, Santa Clara and San Mateo counties, King County (Seattle), Multnomah County (Portland), Westchester County, Alameda County, and an overall rate for all US states.

1. USA
10
100
1,000
10,000
100,000
1,000,000
10,000,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's USA Projection as of 2020-03-28
Doubling Time: 2.13 days
1

2. New York City
10
100
1,000
10,000
100,000
1,000,000
10,000,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's New York City Projection as of 2020-03-28
Doubling Time: 1.67 days (now: 4.47 days)
2

3. Santa Clara and San Mateo
10
100
1,000
10,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's Santa Clara and San Mateo Projection as of 2020-03-28
Doubling Time: 3.55 days (now: 5.15 days)
3

4. Santa Francisco
10
100
1,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's Santa Francisco Projection as of 2020-03-28
Doubling Time: 4.16 days
4

5. King County (Seattle)
10
100
1,000
10,000
100,000
1,000,000
10,000,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's King County (Seattle) Projection as of 2020-03-28
Doubling Time: 2.12 days (now: 5.42 days)
5

6. Multnomah County (Portland)
10
100
1,000
10,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's Multnomah County (Portland) Projection as of 2020-03-28
Doubling Time: 2.02 days
6

7. Westchester County
10
100
1,000
10,000
100,000
1,000,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's Westchester County Projection as of 2020-03-28
Doubling Time: 2.02 days
7

8. Alameda County
10
100
1,000
10,000
Date
Actual(points)/Predicted(line)
Type
Pre
Log Linear
Post
Steve's Alameda County Projection as of 2020-03-28
Doubling Time: 2.58 days
8

9. All States
Overall US rate
0
2
4
6
State
DoublingTime
Steve's 7 day all state summary as of 2020-03-28
9