11 AM Final update before landfall.... Looks like peak strength may be 150 mph, just 6 mph off making Cat 5. It could still strengthen while in the marshes, but I am guessing it has topped.
Hurricane Ida Tropical Cyclone Update
NWS National Hurricane Center Miami FL AL092021
1100 AM CDT Sun Aug 29 2021
...1100 AM CDT POSITION UPDATE...
...NORTHERN EYEWALL OF IDA MOVING ONSHORE ALONG THE COAST OF
SOUTHEASTERN LOUISIANA...
An elevated NOAA C-MAN station at Southwest Pass, Louisiana,
recently reported a sustained wind of 89 mph (143 km/h) and a wind
gust of 104 mph (167 km/h).
Within the past hour, sustained winds of 44 mph (70 km/h) and a
gust to 60 mph (96 km/h) was reported at Lakefront Airport in New
Orleans.
A NOAA National Ocean Service tide gauge in Shell Beach, Louisiana,
recently reported a water level of 6.0 feet above mean higher high
water, which is an approximation of inundation in that area.
A NOAA National Ocean Service tide gauge at Bay Waveland Yatcht
Club, Mississippi, recently reported a water level of 5.4 feet
above mean higher high water, which is an approximation of
inundation in that area.
SUMMARY OF 1100 AM CDT...1600 UTC...INFORMATION
-----------------------------------------------
LOCATION...28.9N 90.1W
ABOUT 25 MI...40 KM SSW OF GRAND ISLE LOUISIANA
ABOUT 60 MI...95 KM SE OF HOUMA LOUISIANA
MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H
PRESENT MOVEMENT...NW OR 320 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...933 MB...27.55 INCHES