I've been watching NOAA's P3 Orion fly though Hurricane Matthew a bit on Flight Radar 24. Looks a bit like this for the curious:

enter image description here source

It's the only plane actually in Hurricane Matthew.

What I'm curious about is how they get through there safely? I know they have done it with prior hurricanes, and I assume they have some sort of weather radar on board (being a NOAA aircraft and all), but I also assume there is much more to why that P3 is able to make it through a Hurricane without breaking apart.

Anyone have some insights into what makes this possible? I'm especially curious about what they do to avoid the worst pockets of the storm (assuming they do).

And for anyone curious about how it looks like when that plane hits the middle of the storm, here you go:

enter image description here source

Clearly there's not that much weather to avoid in the eye of the hurricane, but getting through those walls has got be pretty difficult considering all the wind shear.

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    Have you ever watched this episode of Air Crash Investigation? It covers an incident of prop failure on the NOAA plane while flying indie hurricane Hugo – TomMcW Oct 7 '16 at 18:45
  • Don't they fly just fly over the eyewall rather than through it? They then drop radiosnodes into it to get the measurements they want. – reirab Oct 7 '16 at 20:19
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    @reirab Question 1 at this link (kinda wishing I'd found this article before posting! Oh well, a chance for someone to get some points still. The article doesn't go into deep detail anyway): hurricanehunters.com/faq.htm – Jay Carr Oct 7 '16 at 20:30
up vote 17 down vote accepted

The National Oceanic and Atmospheric Administration uses three aircraft for carrying out hurricane research- a Gulfstream IV SP and two Lockheed Martin WP-3D Orions, while the USAF 53rd WRS 'Hurricane Hunters' uses the WC-130J for this purpose. Of these only the latter ones are used for penetration purposes.

The Gulfstream is used to fly around and over the hurricane (the 45,000' ceiling helps). From noaa page:

The NOAA G-IV jet usually does NOT penetrate the hurricane eye, but is assigned to fly synoptic scale patterns AROUND the storm, deploying dropsondes along the way, in order to profile the environmental flow that is moving the hurricane.

The other two aircraft- the Orion and Super Hercules are not modified structure-wise (except for extra fuel tanks) for carrying out these missions. From the hurricane Hunters site:

These aircraft are not reinforced in any way in fact the only differences between a WC-130J and a C-130J is the addition of two external fuel tanks ..., a radiometer pod on the left wing and the two addition crew pallets in the cargo bay

The aircraft does have onboard weather radars, one of which is used exclusively for flight safety, with the others used for research:

Each WP-3D aircraft has three radars: nose, lower fuselage and tail. The nose radar (a solid-state C-band radar with a 5° circular beam) is used strictly for flight safety and is not recorded for research purposes.

The aircraft are also fitted with INE and GPS and also satellite communications for transmitting and receiving real time updates. During the flight, the flight crew are in constant communication with the flight director, and make adjustments according to the requirements:

During the most dynamic portion of the flight, Price is in constant communication with the Flight Director, who provides real-time flight guidance based on the radar picture.

As far as flying through storm is concerned, looks like they simply punch through it to get to the center- in the end, the aircraft could handle it. From USAF site:

... airplanes are built to go very fast through the air, and they don't care if the wind is 5 knots (nautical miles per hour) or 150 knots! .... Although there are usually some bumps on the way through, they are nothing that the airplane can't handle..

The NOAA officials say pretty much the same thing in this reddit AMA:

The WP-3D is built like a tough old pickup truck. It can handle a lot of abuse in the storm environment and come back and fly the next day.

Incidentally, according to noaa the aircraft crew are more concerned about the turbulence rather than the actual winds in the eye wall:

... hurricane's rainbands and the eyewall, which can get a bit turbulent. The eyewall is a donut-like ring of thunderstorms that surround the calm eye. The winds within the eyeall can reach as much as 200 mph [325 km/hr] at the flight level, but you can't feel these aboard the plane.

... the turbulent updrafts and downdrafts that one hits. Those flying in the plane definitely feel these wind currents. These vertical winds may reach up to 50 mph either up or down, but are actually much weaker in general than what one would encounter flying through a continental supercell thunderstorm.

Looks like they simply fly through it anyway. Basically, they 'crab' into the hurricane so that they reach the eye of the storm. From the Reddit AMA:

Depending on how strong the winds are you have to point the nose of the aircraft so that your track will lead you into the eye. The difference between heading and track is known as your drift angle. Sometimes you can have as much as 20-25 degrees of drift angle. We sometimes call this “crabbing” into the storm, where we are pointing the aircraft to the left or right to flight straight.

The image below shows the path taken by one of the aircraft during flight into Hurricane Hugo.


Zoomed-in radar image of Hugo's eye, taken during NOAA 42's flight. The flight path of NOAA 42 is shown as the white line (note the loops made within the blue area, the eye of the hurricane). The eyewall (red and pink areas on the radar image) contained violently strong winds. Image credit: wunderground.com; Image from hurricanscience.org

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    So, in some places you make it sound like they just "fly right in" and in others it sounds like they are using their nose radar to skirt the worst of it? I'm a little confused as to which one is actually happening. – Jay Carr Oct 8 '16 at 14:06
  • @JayCarr Kinda both- in the reddit AMA I was referring to, the director of hurricane division said "NOAA pilots and crew routinely fly in the high-wind environment of the hurricane and don't fear it tearing the plane apart. However, they are always monitoring for "hot spots" of severe weather and shear that they can often identify on radar and avoid if it's too severe.". – aeroalias Oct 8 '16 at 14:11

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