Author: Jim Hardy

There are a lot of coronavirus graphs these days. I’ve been seeing more log graphs around and some confusion about how to read them. I think we’ll see log graphs more often as we go forward, so it’s a good idea to understand what they mean. If you’re already comfortable with log graphs, there’s probably nothing […]

First off, I think I may have overreacted to short term changes in the growth rate in my last projection. The projections are mathematically right, but in retrospect the increased rate of growth we saw may have been noise rather than signal. I’ll be taking a more conservative approach today, based on the trend graph […]

My posts lately may have sounded a bit dire. I want to offer some hope in this one. Let’s look at the three states with the most cases, WA, CA, and NY. The first picture shows the graphs of cases starting in mid February. The orange line is the one I want to focus on. […]

Yesterday morning, we passed 10,000 cases. This morning we’re at over 16,000. That’s a 60% increase. Yesterday’s midnight to midnight growth rate was 53%, that’s what I’ll mostly use in this post. The day before saw an increase of 47% The day before that was 38%. Obviously, the growth rate has been accelerating. The good […]

So we’ve reached 10,000 cases in the US about a day earlier than our projection estimated.  What does that mean? There are several things it could mean.  I’m going to go through a list of possibilities in roughly the order of increasing probability. 1) The virus has gotten stronger.This is possible, but highly unlikely.  To […]

3 days ago I posted a projection of the increase in cases of coronavirus in the US based on a 3 day doubling period, which was about what we were seeing at the time. We had about 2500 cases then. This morning the tracker I use (more about that later) shows us at 5286 cases. […]

As of this morning (3/14), we’re over 2500 confirmed coronavirus cases in the US. We gained more than 500 cases yesterday. I expect us to be over 3000 by the time we wake up tomorrow. Our doubling time is less than 3 days right now and has been for a while. So long as that […]