Special Weather Statement
While most locations are getting plain ...

WeatherMatrix (Jesse Ferrell)

Rare Cat 3 hurricane in Arabian Sea; Alberto to flood holiday weekend

By Jesse Ferrell
5/25/2018, 2:00:36 PM

Cyclone Mekunu is a rare, major, Category 3 hurricane this morning making landfall in Yemen and Oman. The radar is very impressive!

Oman Radar, 5/25

Cyclones aren't rare in the Arabian Sea, but a storm this strong hitting land is -- assuming the NOAA database is correct (which it probably isn't in this area of the world before 2000). Here are some tidbits:

Significant Cyclones in the Arabian Sea

- Only two hurricane-force storms have ever hit the Arabian Peninsula (Oman and Yemen):
- Cyclone Chapala in 2015 (Cat 4 at sea) which hit as a Cat 1 in the southern half of Yemen.
- Cyclone Phet in 2010 (also Cat 4 at sea) which hit northern Oman as a Cat 2 storm, tying for the strongest on record over water and the strongest ever to make landfall on the Peninsula.
- Only one hurricane has come close to landfall anywhere where Mekunu is, which is smack in the middle of the storms listed above, near Salalah, Oman.
- That was an unnamed storm in 1959, although the NOAA database officially declassifies the storm before it hits land.

(Related image: GFS forecast winds for landfall)

Cyclone Mekunu Winds 5/25

- WikiPedia says of that storm "May 24, 1959 – The eye of a storm passed over southwestern Oman near Raysut. Wind gusts were estimated at 167 km/h (104 mph), and the barometric pressure dropped to 968 mbar (28.60 inHg). The storm cut power supply and wrecked many local houses. Salalah recorded 117 mm (4.6 in) of rainfall, with higher totals in the mountains, washing away the road connecting Slalah and Raysut. Offshore, strong waves destroyed several boats, including a dhow carrying 141 people; all those aboard the boat were killed."

So, if Cyclone Mekunu makes landfall as a Category 3 storm, it will be the strongest ever to hit the Arabian Peninsula. If not, it will still be the only hurricane-force storm to officially hit the area since 1959. Either way, it's very rare and people there will not be prepared for it.

In the video below, from Salalah this morning, it looks like the guy is having a great time doing a "flood selfie" but the truth is, this is a very dangerous storm, the likes of which people in the area have probably never seen, and there will be reports of deaths, injuries, and a lot of damage.

One of the main reasons this could be a terrible storm for the area -- Salalah has some of the only mountainous terrain on the Arabian Peninsula surrounding it!

Salalah Topography 2

Salalah Topography 1

As rain "upslopes" the mountains, it will dumping even higher rain in the mountains and beyond, exacerbating flooding in the city. The European model is calling for two feet of rain to inundate the entire valley around Salalah!

Model Rainfall for Cyclone

In other news... Subtropical Storm Alberto has formed, as we forecast earlier this week. It's still unclear where the worst flooding will be, but we are calling for 10 to 20 inches of rain somewhere in the Southeast, which means everyone who lives there (not just on the coast) needs to prepare now.

Next week May 25

The two major forecast model ensembles below show the most likely areas to be affected, but even they are generalizing and don't know where exactly the heaviest rain will fall.

Model Rainfall 10-Days

The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com


Comments that don't add to the conversation may be automatically or manually removed by Facebook or AccuWeather. Profanity, personal attacks, and spam will not be tolerated.

WeatherMatrix (Jesse Ferrell)