waterways into this region, the marshland, all of it, as conducive as it gets for what is known as the brown ocean effect. it s a phenomenon here where the system makes landfall but is able to maintain intensity over land because of that worm moist environment and of course the waterways across this region and the bayous certainly help with these tropical systems maintain that intensity. but i ve never seen one go from a strong category 4 to still being a category 4 by 6:00 p.m. eastern tonight, which is more than five hours after landfall. so this storm certainly packed a punch and it still does as a strong category 1 based on the latest advisory coming in here. special statement there bringing that wind speed down to 95 miles per hour. now, with that said we do expect the systems to continue gradually weakening into the overnight hours but produce as much as eight to maybe ten inches of additional rainfall with those sustained winds near the center close to 100 miles per hour. yes, s
Landfall
It
Wall
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and its own rainfall. we saw this with hurricane harvey. it rained 40 inches. it was feeding on its own water. this is called the brown ocean effect. we ve got extreme wind warnings. if you haven t seen this today, of course, our landfall 153 miles per hour wind gusts. the sheriff in town recorded 148 until his instrument broke. once the winds lighten up, the aerial views we ll see from small aircraft or maybe drones is going to stagger the imagination. remember what it looked like when michael moved into mexico beach. it s climate change. now we ve got the extreme wind warning. they ve taken away some areas to
Rainfall
Water
Brown-ocean-effect
Hurricane-harvey
40
Landfall
Sheriff
Town
Wind-warnings
You-haven-t
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148
but these smaller compact storms hit like cannonballs. the slowing of the speed, which is also forecast. you can see where landfall, 150 miles per hour. this now makes the fourth out of five hurricanes, the last five we ve seen to hit the state of louisiana. i have never seen something quite like this. we study some of these and we cover these typhoons that move in areas like china. this is mitchuch like some of t massive typhoons. this well defined core does not change. the colors would start to lighten, but notice the darker bands. it s still breathing. what is giving it the energy? it s called the brown ocean effect. this system is no longer feeding on the warm waters of the gulf. it s feeding on the marsh waters
Landfall
Storms
Speed
Slowing
Cannonballs
150
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6:00 to 7:00, here in new orleans proper, we could see wind gusts of 100 miles per hour, which could be devastating for the infrastructure, the power grid, things like that. as you look at the visible satellite picture, what is surprising a lot of people, it s over a marshy area, the hurricane ida is looking better now than it did a few hours ago. there s a phenomenon called the brown ocean. what that means is there s very, very very moist land surface that s very warm, almost like an ocean, and it drawing energy from that warmth. again, another problem, another byproduct of climate change. so there s some talk in tropical expert circles that this thing is holding together longer and staying stronger longer because of this brown ocean effect.
New-orleans
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Things
Infrastructure
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7
00
100
6
Area
People
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