Strait of Hormuz Monitor — 30 Sep 2026

READ — What changed * what it means

• THE FLOW DATA TURNED MONTHLY, AND THE THROUGHPUT SCALAR MOVES FOR THE FIRST TIME SINCE 8 SEPTEMBER — Three sources landed inside 48 hours. Kpler's preliminary September data put regional crude exports at 16.3 mb/d, the highest since the war began and against 19.5 in February; Saudi exports at 5.4 mb/d after 2.45 in August; and crude through the Strait itself at about 9.7 mb/d. A bank tracker's ten-day regional average reads 17.5 mb/d, 98% of pre-war, but that is a regional figure that counts the Yanbu route and cannot be read as a Hormuz figure. Visible-only trackers still print 3.7 mb/d and a Bloomberg-cited range runs 6-8 mb/d, which is what a corridor moving most of its crude with AIS off looks like from the outside. We held 8.6 mb/d for seven editions because no newer all-in estimate existed; one now does, so the scalar goes to 9.7 with a 7-10 band. It still fails the >12 mb/d gate at about 49% of the 20 mb/d baseline, and refined products lag at about 3 mb/d, 58% of pre-war.
• YANBU IS LOADING AGAIN, AND THE BYPASS GOES FROM 'RESTARTING' TO 'RUNNING AT A THIRD' — Tanker loadings at Yanbu resumed after the East-West pipeline restart, averaging about 2 mb/d since last week; satellite imagery over the Red Sea on 27 September shows close to 10 million barrels loading at Yanbu and Al Muajjiz. Pipeline throughput is 2-2.65 mb/d against a 7 mb/d nameplate, expected to reach 3-4 mb/d within days and the pre-attack 5.5 mb/d in about a month. The Houthis made a third attempt on the Yanbu terminal on 24 September, so the route is running under fire. Iraq has begun importing petrol through Syria's Baniyas port as its own bypass.
• FOUR LADEN QATARI CARGOES CROSSED IN SEPTEMBER: THE GAS LEG OF OUR TEST IS MET — Ship-tracking shows the GasLog Skagen loaded at Ras Laffan and off Sri Lanka by 28 September, the Al Ghashamiya delivered to India, the Shandong Redwood to Pakistan and the Al Daayen out of Hormuz bound for China, with the Al Mafyar entering empty on 22 September to load. No LNG crossing was visible in August. Our re-specified test needs four or more laden Qatari cargoes inside a rolling fortnight together with crude above 12 mb/d and war-risk falling from 40x: the gas leg is met, the other two are not, so there is no tip toward Phase 3. What does not move: two of fourteen Ras Laffan trains remain damaged on a three-year repair, Edison's force majeure now runs to early December with 35 cargoes missed since April, and Pakistan and Bangladesh are suspended through November. Qatar's energy minister says a pipeline around the Strait makes no economic sense. The trains are the level; the shipping premium is what is decaying.
• THE DARK PANEL WENT DARK, AND WE SAY SO RATHER THAN CARRY A NUMBER — The screened tanker series we have quoted since 19 September (14.2, 16.9, 29.0, 13.2) is not published today; the tracker shows 794 vessels with stale fixes 'not counted either way' and no dark-tanker section. There is therefore no screened print for the three-builds rule to act on, and the all-traffic scalar stays 57.0. What exists is the transit-basis count: 14 of 25 transits dark on 27 September, 56%, and 6 of 17 on the 28th, 35%, three of them tankers outbound, with staged dark tankers observed near Larak and Chabahar; and at the loading end only 4 of 55 tankers lifting Saudi Gulf crude between 1 and 27 September called with AIS on. The aggregator's 'last official count: one vessel on 27 September' is again a single Sunday PortWatch print, the same trap we fell into on 23 September; it is not used. Transits are re-set 18 to 17 on the Windward basis: 6, 13, 25 and 17 a day across 25-28 September.
• TALKS RESUMED, THE RESPONSE IS DUE TODAY, AND THE PRICE OF A DEAL JUST WENT UP — Indirect contacts resumed on 28 September through Qatar; Araghchi met the Qatari mediators in New York on Monday to discuss 'ideas and how to find solutions to fulfil Iran's conditions' and expects Washington's formal response on Tuesday through Doha. A US official told Al Jazeera there would be no agreement unless the nuclear programme is addressed, with sanctions relief traded for nuclear progress and the sides 'still apart on the timing' — which widens the gap the seven-day plan tried to sidestep by trading the Strait for the blockade alone. Iranian officials are privately pessimistic about a deal before the midterms; Khamenei warned foreign forces against entering the Arabian Sea and Admiral Sayyari said the Strait remains closed. We move the nuclear score to -1 and hold the rest; we do not pre-empt a response that has not arrived.
• THE SHOOTING CONTINUES, AND THE MARKET SOLD THE FRONT MONTH ANYWAY — A large crude tanker was struck overnight by an unknown projectile, attacker unidentified; a Kuwaiti tanker was hit north-west of Musandam on 25 September and its crew put out the fire; explosions followed the rejection near Qeshm with anti-ship missiles and drones reported fired at vessels transiting against Tehran's wishes; Iran has threatened charterers using unapproved routes; eight US Marines were injured in an attack about two weeks ago, disclosed on the 28th. Stranded vessels rose from 203 to 258 and war-risk stays near 40 times pre-crisis. Against all of that Brent settled 102.59 on 29 September, down 2.6%, with the November prompt spread above $7 a barrel, and 102.68 in Asia this morning: the market is pricing the flow recovery, not the incident count. Prediction markets: reopening by 31 October 3%, by year-end 20%, by July 2027 45%. CO6 86.73 and CO12 80.27 remain carried 23 September marks.

SCENARIOS — How this resolves * what we watch

• BASE (~55%) — a throttled corridor clearing near 10 mb/d with no deal before the midterms — Unchanged at 55%. Flows hold in the 7-10 mb/d band on Saudi and Iraqi VLCC clearances plus dark and ship-to-ship traffic, Yanbu climbs toward 4 mb/d through October, the Strait stays formally shut, the front month oscillates around 100-108 on headlines and the twelve-month barely moves. The US response keeps the channel alive without closing the nuclear gap. The premium bleeds slowly rather than resolving.
• BEAR (~25%) — the response closes the channel, or a laden tanker goes down in-channel — Down from 30%: the renewed bombing campaign the President was said to expect has not begun and the channel reopened instead. What remains is the nightly incident rate — a strike that sinks a laden tanker in-channel rather than damaging one, a Houthi round that reaches the Yanbu terminal on the fourth attempt, or a US response that ends the mediation — any of which tips the corridor toward Phase 1. The capacity is intact; the willingness to sail is what evaporates.
• BULL (~20%) — a response with terms and a date — Up from 15% on the resumed channel and the gas leg being met. Washington answers with terms, the nuclear sequencing is bridged rather than front-loaded, escorted traffic widens, war-risk decays off 40x and throughput clears 12 mb/d. What this still does NOT fix: 12.8 mtpa of Qatari liquefaction offline on three-year repair guidance. The shipping premium can decay on a diplomatic outcome. The trains cannot.
• WHAT WOULD ACTUALLY MOVE THE PHASE — AND THE VELOCITY — A tip toward Phase 3 requires all three of: four or more laden Qatari LNG cargoes inside a rolling fortnight (MET), crude throughput above 12 mb/d (9.7 — not met), and war-risk falling from ~40x (flat — not met). A tip toward Phase 1 requires loss of physical control over third-party transit — a third-party tanker sunk in-channel, a Kharg or terminal strike, a US strike on Oman, or all-in crude clearance at near-zero. None has fired: the overnight strike damaged a hull and did not sink it, and ~9.7 mb/d is clearing. VELOCITY goes to IMPROVING only if the US response today keeps the channel alive AND no laden tanker is struck in-channel across the next two builds; that condition is written here so the call cannot be made on one good print, which is how the 21 September upgrade failed.

Bottom line. HOLD — Phase 2 (Fragile), velocity MIXED, with the physics improving on monthly, multi-source evidence and the diplomacy unresolved pending today's US response. THE FLOW DATA: Kpler's preliminary September count — regional crude exports 16.3 mb/d, Saudi 5.4, Hormuz ~9.7 — is the first new all-in estimate since 8 September and the throughput scalar moves 8.6 to 9.7, still failing the >12 gate at about 49%; Yanbu is loading again at ~2 mb/d and climbing; four laden Qatari LNG cargoes crossed in September, so the gas leg of the sustained-flow test is met while the crude and war-risk legs are not. THE DIPLOMACY: talks resumed 28-29 September through Qatar, the formal US response is due today, and the US now conditions any deal on the nuclear file — the price of a deal went up while the channel reopened. THE VIOLENCE: a large crude tanker struck overnight, a Kuwaiti tanker hit on the 25th, explosions near Qeshm, 258 vessels stranded, war-risk 40x. THE DARK PANEL: the screened series is not published today; transit-basis 56% dark on 27 September and 35% on the 28th; only 4 of 55 Saudi liftings called with AIS on; all-traffic held 57.0. The badge holds because no Phase-1 trigger has physically fired and the corridor is clearing more, not less; velocity stays MIXED with the upgrade condition written down. Brent 102.59 settle on 29 September, 102.68 in Asia; CO6 86.73 and CO12 80.27 carried. Day 213. Base 55, bear 25, bull 20. Macro cross-reference: the US PCE, annual revision and Q2 GDP prints at 08:30 ET today — the energy leg is the removable premium in that inflation path; the Qatari trains are the level that is not.