This is the forum page for the 2017 North Indian Ocean cyclone season.

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Other Basin Talkpages (2017): Atlantic - W. Pacific - E. Pacific - S. Hemisphere - N. Indian


Possible major cycloneEdit

The GFS is showing an intense tropical cyclone in a couple days in the Bay of Bengal. Could this be Maarutha? TG Merry Christmas! 23:37, January 4, 2017 (UTC)


Cyclonic Storm MaaruthaEdit

Snd its here. 35 kt right now and heading towards Myanmarr (not Irrawady Delta thankfully).-- 02:32, April 16, 2017 (UTC)

Dead... ~ KN2731 {talk} 12:07, April 19, 2017 (UTC)



Cyclonic Storm MoraEdit

Formed yesterday and it's heading north to Chittagong and India. 16:22, May 29, 2017 (UTC)

Severe Cyclonic Storm MoraEdit

Well well, it looks like we got our first SCS this year, as it was upgraded into that category. 17:09, May 29, 2017 (UTC)

The latest advisories from both agencies bring it to the 60-65 KT range, and then directly move Mora into Bangladesh.... Remember Akash? Looks pretty chilling, anyway. -- 21:50, May 29, 2017 (UTC)

Mora intensified into a Category 1 in 1-min mean. Getting ready to make landfall already. :) 01:57, May 30, 2017 (UTC)

Deep Depression MoraEdit

Mora made landfall moments before and weakened into a deep depression. It will dissipate soon. :) 18:33, May 30, 2017 (UTC)

Dead. :) 00:29, May 31, 2017 (UTC)


Land Depression 02Edit

The first system since July. It's over West Bengal and has already claimed three lives. Designated "97B.INVEST". ~ Steve Talk PageMy Edits📧 23:10, October 9, 2017 (UTC)

It was briefly a deep depresion, but it has now weakened back into a depression. Its also stimulating rainfall across India. 11:51, October 10, 2017 (UTC)



Located in the Bay of Bengal. Will this be Ockhi? ~ Steve Talk PageMy Edits📧 03:54, October 16, 2017 (UTC)

Now a tropical depression. Anonymous 2.0 (talk) 10:35, October 16, 2017 (UTC)

Not yet. The IMD isn't issuing any advisories at the moment. All I see is that it's on the tropical weather outlook on the IMD site (click RSMC Bulletin), and marked as 98B. I also saw the page history for "2017 North Indian Ocean cyclone season" on Wikipedia and Iune reverted the addition of so-called "BOB 05". Next time, check IMD for updates as Wikipedia isn't always reliable. ~ Steve Talk PageMy Edits📧 00:47, October 17, 2017 (UTC)
Code orange (JTWC). ~ Steve Talk PageMy Edits📧 04:21, October 18, 2017 (UTC)

Depression BOB 05Edit

Now it's a TD. Not expected to intensify much before landfall. ~ Steve Talk PageMy Edits📧 01:48, October 20, 2017 (UTC)

Remnants of BOB 05Edit

Died out two days ago. I don't really care much about that basin. Hi!- 14:30, October 24, 2017 (UTC)


Low chance on JTWC. ~ Steve Sp🎃🎃k MeHaun👻 Me💀 02:08, October 31, 2017 (UTC)

Long dead. ~ Steve Talk PageMy Edits📧 00:01, November 12, 2017 (UTC)




Another new invest near Sri Lanka/southern India. ~ Steve Talk PageMy Edits📧 00:01, November 12, 2017 (UTC)

Depression BOB 06Edit

Now a TD approaching the Andhra Pradesh/Odisha coast. ~ Steve Talk PageMy Edits📧 22:29, November 15, 2017 (UTC)

Remnants of BOB 06Edit

And its dead per IMD. Still at medium per JTWC. -- 10:10, November 17, 2017 (UTC)

Now off JTWC. ~ Steve Talk PageMy Edits📧 06:58, November 18, 2017 (UTC)



Another new Bay of Bengal invest near Sri Lanka, up on Tropical Tidbits. The BOB has been very active at the expense of the Arabian Sea. I wonder when the Arabian Sea will finally get something. ~ Steve Talk PageMy Edits📧 22:40, November 27, 2017 (UTC)

Medium chance on JTWC. ~ Steve Talk PageMy Edits📧 23:43, November 28, 2017 (UTC)
High chance and a TCFA. JoeBillyBob (talk) 10:05, November 29, 2017 (UTC)

Depression BOB 07Edit

It's a tropical storm in 1-min mean and is forecast to intensify to 90 knots.Hope it doesn't hit Mumbai.JoeBillyBob (talk) 21:29, November 29, 2017 (UTC)

JTWC has declared it the "3rd" system of the year, and it's already a weak TS (35 knots/40 mph) according to them. Forecast to intensify in the Arabian Sea and will hopefully spare Mumbai to the west. Assuming it intensifies to a cyclonic storm, it will be named Ockhi. This system bears watching, for it could become really powerful in the Arabian Sea if it RIs. ~ Steve Talk PageMy Edits📧 21:59, November 29, 2017 (UTC) 

Cyclonic Storm OckhiEdit

RI'ing and 60 mph right now(1-min mean) Dunn-Dun. JoeBillyBob (talk) 08:49, November 30, 2017 (UTC)

According to JTWC (1-min) it's now at 70 mph, which means it's close to becoming a C1-equivalent storm. The official 3-min intensity, according to IMD, is 50 mph/994 mbars. It's forecast to reach 115 kph (70 mph) according to IMD and 90 knots (105 mph) according to JTWC. I think it has potential to get even stronger than that. It's threatening coastline north of Mumbai, so this bears watching, like I said above. ~ Steve Talk PageMy Edits📧 02:23, December 1, 2017 (UTC)
On the long run, it'll hit India in 4 days time. I hope it doesn't cause that much deaths as some of the cyclones do. Ahem. Hi!- 02:45, December 1, 2017 (UTC)

Severe Cyclonic Storm OckhiEdit

IMD has called it a SCS. Their intensity is now 60 mph/992 mbars. And I think the most deadly storms in this basin strike Bangladesh and the region around it, not where this cyclone is heading. ~ Steve Talk PageMy Edits📧 06:03, December 1, 2017 (UTC)

Very Severe Cyclonic Storm OckhiEdit

hooray for our first VSCS of the season,according to IMD.Now 80 mph.JoeBillyBob (talk) 12:15, December 1, 2017 (UTC)

A Gonu-type storm is coming, for Pakistan and India. TG My Birthday 12:16, December 1, 2017 (UTC)
90 mph.The forecasts bring it closer and closer to Mumbai... JoeBillyBob (talk) 23:09, December 1, 2017 (UTC)
Now 100 mph. JoeBillyBob (talk) 07:09, December 2, 2017 (UTC)
Now it's 110/964. That makes it the strongest NIO storm since... Megh? - Garfield
That's exactly what Megh's peak intensity was. If it strengthens further than this, which is likely, it will be the strongest storm since Chapala. TG My Birthday 13:31, December 2, 2017 (UTC)

Here we go. 95 kts 3-min. 975 mbar. Ockhi is going to be a very bad storm, as it could slam into Mumbai as an intense storm. TG My Birthday 17:26, December 2, 2017 (UTC)

Oh, that's such a bad storm coming from them. Hi!- 18:37, December 2, 2017 (UTC)
IMD currently only has it up as a VSCS. I saw the wiki page history for the 2017 North Indian Ocean cyclone season and any changes to make it an ESCS were reverted, and IMD doesn't say anything about it weakening back to a VSCS. I don't think it was ever officially an ESCS... Anyway, Mumbai and surrounding regions should be preparing for a potentially devastating cyclone. It could get really bad over there. And it has already, sadly, claimed the lives of at least 30 people while moving through Sri Lanka and southernmost India. ~ Steve Talk PageMy Edits📧 01:03, December 3, 2017 (UTC)
Down to a Category 1 (SSHWS). Hi!- 17:30, December 3, 2017 (UTC)
Now 85 mph/982 mbars according to the IMD. It'll make landfall in or near Surat as a much weaker system. I will take back what I said above about this being a potentially devastating threat, unless it pulls off a 23W. ~ Steve Talk PageMy Edits📧 21:14, December 3, 2017 (UTC)

Severe Cyclonic Storm Ockhi (2nd time)Edit

Down to SCS intensity (65 mph/988 mbars according to IMD) as it closes in on landfall in Gujarat. ~ Steve Talk PageMy Edits📧 02:05, December 5, 2017 (UTC)

Deep Depression OckhiEdit

RWd to DD status. -- 14:53, December 5, 2017 (UTC)

Remnants of OckhiEdit

It's now a "well-marked low pressure area" according to IMD. That was a quick dissipation. It didn't even reach land as a TC. ~ Steve Talk PageMy Edits📧 02:24, December 6, 2017 (UTC)

still caused 247 confirmed deaths and 5.07 billion in (talk) 09:46, December 23, 2017 (UTC)




This has recently crossed Malaysia and entered the NIO. JTWC gives it a "medium" chance. ~ Steve Talk PageMy Edits📧 02:24, December 1, 2017 (UTC)

Down to low chance. Getting a bit doubtful that this will be Sagar. ~ Steve Talk PageMy Edits📧 01:05, December 3, 2017 (UTC)
Actually I take that back. Models develop this, and IMD says it's very likely to intensify into a depression soon. ~ Steve Talk PageMy Edits📧 02:07, December 5, 2017 (UTC)
Depression BOB 08

Now a TD but IMD's outlook is not looking so favorable. It will probably only get up to deep depression status (as opposed to something strong, staying weak would be more of a good thing because India seems to be in its path). Maybe there is still a slight chance of it becoming Sagar though. ~ Steve Talk PageMy Edits📧 05:29, December 7, 2017 (UTC)

Strong wind shear slows its intensification. A teeny chance of this to become Sagar. Hi!- 00:02, December 8, 2017 (UTC)

Deep Depression BOB 08Edit

It reached this intensity earlier. ~ Steve Talk PageMy Edits📧 02:28, December 9, 2017 (UTC)

Depression BOB 08 (2nd time)Edit

Back down to depression status according to IMD. Unofficially, JTWC calls it a 45 mph cyclonic storm. It's heading towards Kolkata and shouldn't intensify to be Sagar. ~ Steve Talk PageMy Edits📧 02:28, December 9, 2017 (UTC)

Remnants of BOB 08Edit

Has dissipated according to both IMD and JTWC. ~ Steve Talk PageMy Edits📧 05:43, December 10, 2017 (UTC)