The tsunami warning created massive gridlock across urban Honolulu, but luckily the damaging waves didn’t materialize.
I’m not talking about the scene in Hawaii yesterday.
I’m thinking back nearly 40 years to the tsunami warning on May 7, 1986, an event Meda and I have referred to since as the Pseudonami. Large earthquake, with major potential for a destructive series of waves that eventually turned out to be much less than feared.
I was working at the time for Common Cause, which had a small office on the second floor of what was then referred to as the Armed Service YMCA building (harkening back to its pre-WWII history), later known as the Hemmeter building, and now the No. 1 Capitol District Building. Right across Alakea Street from the State Capitol,
Meda was still splitting her time between teaching 1/2-time at Honolulu Community College and spending the other half in a research position on the University of Hawaii Manoa Campus.
This was one of her HCC days. Our routine was that Meda would drop me off downtown in the morning on her way to HCC, and then pick me up at the end of the day. We assumed our regular routine would work as Honolulu evacuated.
It was about 1.6 miles from the campus to my location by the capitol, usually a 10-minute drive. But as happened yesterday, Pseudonami evacuation created massive traffic jams and gridlock across the city. It ended up taking several hours for Meda to get to downtown.
That was nearly 40 years ago, and in the intervening years there has been a lot of discussion of techniques for avoiding or controlling gridlock that should be part of emergency preparedness planning. But perhaps that discussion hasn’t trickled down into our state and local planning.
Here’s a link to one video showing yesterday’s traffic gridlock in Honolulu, and there are many others to be found online.
Since we’re traveling, I’ve been scouring news reports looking for evidence that any traffic abatement strategies were deployed yesterday as part of the emergency plan. So far, I haven’t found any mentions.
Please share a comment if you observed any actions of this kind.
I just took a look at the State of Hawaii Integrated Preparedness Plan 2025-2026 (January 31, 2025). The word “traffic” does not appear in it. Various sub-plans discuss the category termed “Transportation,” but this focuses on organizing the resources needed to rebuild roads and bridges, and get airports and harbors functioning as soon as possible.
I asked ChatGPT to summarize recommendations for planning to deal with gridlock. Here’s its answer.
Actionable Best Practices
1. Use zoned evacuation orders to reduce surge traffic.
2. Implement contraflow lane reversals on controlled-access roads when feasible.
3. Block inbound traffic to full evacuation zones.
4. Activate emergency alternate routes or bypass roads in bottleneck areas.
5. Reprogram traffic signals for evacuation priority.
6. Send urgent alerts and encourage walking if possible.
7. Avoid fueling during evacuee movement in critical areas.
8. Direct vertical/walking evacuations in high-density zones where vehicle use can be minimized.
9. Deploy law enforcement personnel to manage intersections and enforce evacuation routing.
