Look for a hot day with reasonable humidity, though probably not as palatable as Sunday. A warm front will begin to lift north and as it does, a little disturbance may move down that would provide the opportunity for a few t’storms in the afternoon. Tuesday will be hot and humid with isolated t’storms and the same is true on Wednesday, though the storms may be more numerous with a frontal system approaching.
Typhoon Fung Wong struck Taiwan early Monday with winds in the 105 to 115 mile per hour range. There will probably be flooding and stories of destruction. This is interesting…the first story linked below is the AP story as the storm made landfall. The second is a preliminary story from a Chinese New Website talking about the storm’s predicted landfall. It says it will hit the Northern Philippines! My guess is that since China doesn’t officially acknowledge Taiwan, the writer is calling the island part of the Philippines. That gives me pause because I had thought that China considered Taiwan as part of it’s territory, officially. The Chinese writer couldn’t be THAT wrong in geography…especially if he had looked on these here pages for the Fung Wong track and forecast. Here are the two stories:
On This Date In History: At about 9:49 AM on July 28, 1945 a B-25 Mitchell hit the 79th floor of the world’s then tallest building, the Empire State Building. Two crew members and a passenger were killed in the bomber and 11 people in the building were killed as well. The building was largely empty because the accident happened on a Saturday.
Now, why did this building not collapse like the Twin Towers?
First off, the B-25 was a relatively small plane by today’s standards. It was also not full of fuel. The 767’s flown into the World Trade center weighed about 10 times that of the B-25 and was flying about 4 times faster. The chart at the left shows that the kinetic energy of a fully loaded 767 at impact was about 160 times that of the B-25. I have linked below to the article that goes with the chart as well as an accompanying article writer with Aerospaceweb used numbers that concluded the energy was 60 to 100 times greater.
The Twin Towers were built with a superstructure unlike any other. The main support system was internal with the outer skin actually acting as part of the support structure. The Empire State Building is built in a more traditional honeycomb type system. When the B-25 hit, much of the energy was absorbed by the outer walls whereas the Twin Towers not only had the destruction of the outer skin compromise the integrity, but the energy went all the way through to the main interior structure. Many engineers found it amazing that the building was still standing at all. The impact dislodged much of the heat protecting insulation on the steel in the support structure of the World Trade Center and so the voluminous amounts of hot jet fuel eventually weakened the floor supports, causing a collapsing pancake effect of the floors which resulted in catastrophic failure of the entire structural integrity. Similar incidents with very dissimilar details and results. Here is the complete story from Aerospaceweb which outlines the incident in 1945 and makes a detailed comparisons.