ncforecaster89 wrote:Dave C wrote:Micheal had such a tight eyewall, about 5 miles thick. A strong feeder band that wrapped around the east side merged with the north side of the eyewall causing a kind of double whammy in Panama City. I also think the lowest pressure may have been east of the center of the eye as a station in Mexico beach measured 920 mb.
Hi Dave! I may be unaware of a station in Mexico Beach that you’re referring to that recorded a pressure of 920 mb. That said, I am aware of the FCMP tower T3 that recorded a 920 mb pressure by Tyndall AFB. That measurement was observed just W of the center, as the eye moved ashore between Tyndall AFB and Mexico Beach. In addition, there was a 925 mb reading captured at the Mexico Beach pier by the USGS. I’m guessing the 920 mb pressure you noted was the same one taken at Tyndall. If not, or know of any other Mexico Beach stations, I’d love to know about them, as,well.
I’ll add that two other chasers measured a lowest pressure of 944 mb, just 1.5 nm ENE of the 925 mb reading at the pier, in NE Mexico Beach. A couple other chasers recorded pressures around 923 mb in Callaway at the western edge of the eye. It’s important to note that Callaway is farther inland of the immediate coast, where even that same portion of the eye likely had a slightly lower pressure at the point it intersected the shoreline.
All of this data, in combination with Recon obs just prior to landfall, suggest that Michael had a lowest central pressure below the current operational figure of 919 mb...likely around 916-917 mb. Back to your initial point, you’re correct to note that the minimum central pressure isn’t always located at the absolute center point of the eye.
On this board as Micheal was moving onshore someone reported a 920 at Mexico beach weather station. I'm not sure of exactly where in Mexico beach it was though. It's on page 175 of the Micheal thread. I believe it was a weatherflow station.Also on page 172 someone posted a map showing stations location.