IT is valid for the Australian Bureau of Meteorology to estimate the intensity of a cyclone using computer models when it is far out to sea. But once that same cyclone passes over a weather recording station the modelling data must be updated with real world observational data.
In the case of Marcia even after this cyclone passed over Middle Percy Island recording a minimum central pressure of only 972 hPa, maximum wind gust of 208 km/h and maximum wind speed of 156 km/h, the Bureau continued to report only on the basis of output from a computer model. The cyclone was clearly a category 3 system, yet the Bureau called it as a 5.
The Bureau has since removed the observational data that was once available on their website, I printed it off at the time and had it digitized this morning. That information is here:
It would be travesty if Marcia was recorded as a category 5 cyclone at landfall based on output from a dysfunctional computer model, rather than as a category 3 as clearly indicated by the observational data.