The National Weather Service office in Chicago issued gale warnings for Lake Superior during the early evening of November 9. They later upgraded the gale warnings to storm warnings at 2:00 November 10, 1975.Scott wrote:Part of the tragedy of the Fitzgerald was that they did not have the luxory of modern weather forcasting. The NWS issued gale warnings the afternoon of November 10? Yet there were still ships out on the lake. I realize that things are different these days, but we've definately learned from a few mistakes in the past.
But the improvements in weather forecasting on the Great Lakes came about in several ways. First was the deployment of weather buoys on the lakes, with Lake Michigan getting the first two in 1978.
Second was an increased understanding by scientists of extra-tropical cyclones, such as the Edmund Fitzgerald storm. Scientists investigated the specifics of the failings of the Presidents Day Storm of 1978 forecast along with other Noreasters. from which came an understanding of the physics, warm and cold conveyor belts, jet stream interactions, etc.
Third is the increased computer power over the past 4 decades which provides an improved spatial resolution (horizontal grid spacing of 3km in some models) and increased temporal resolution (hourly output), increased vertical layers in the models and better physics - such as radiation schemes, micro-physics and cumulus schemes, to name a few.
Fourth is the ingest of newer datasets into the models that wasn't available back in 1975. Back then models ingested surface observations and balloon soundings. Today, we still use those two data sets, but we now ingest satellite data, radar data, even non-traditional data, such as meso-nets (weather data provided by state and provincial agencies, schools,etc). All this results in improved skill in numerical weather prediction models (NWP).
Of course all of these improvements came about gradually, but in the 46 years since the Edmund Fitzgerald's loss, we have come along way with weather forecasting. And that has been of benefit to all of us.
- Brian