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FWIW, according to the book Isaac's Storm, the lowest barometric pressure recorded was 28.48 inches, though a later NOAA calculation pegged the lowest pressure at 27.49. Anyone know how to convert to milibars? The highest windspeed recorded in Galveston, before the anemometer blew away, was 100 mph. Later estimates have the wind speed even greater. I think a lot will depend on those sea walls, and what direction the storm comes in on. The one in 1900 came in at a 90 degree angle, which made it victim to two storm surges, one from the bay, then the other from the gulf.

2,396 posted on 09/21/2005 3:50:01 PM PDT by mewzilla (Property must be secured or liberty cannot exist. John Adams)

27.49 inches = 931 mb.

2,404 posted on 09/21/2005 3:52:10 PM PDT by JWojack

29.531 inches of mercury = 1000 millibars = 1 bar = normal atmospheric pressure.

2,434 posted on 09/21/2005 4:02:28 PM PDT by John Jamieson (Hybrids are a highway around CAFE, that's all they're good for.)

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