Scenario B Tracker — Real-time Monitoring of the Diesel / ULSD Compound Disruption

Report type: Real-time monitoring framework
Status: ACTIVE (updated 2026-09-16)
Parent framework: price-impact-compound-disruption-2026-09-15 (Scenarios A / B / C / D)

Purpose¶

This tracker monitors whether the Scenario B pricing outcome ($260-300/bbl US diesel wholesale) is materializing in real-time market data. It was created on September 16, 2026 in response to two simultaneous events:

1. Sep 10-11, 2026: Drone strikes from Iraq shut down Saudi Arabia's East-West Pipeline — the only meaningful land bridge bypassing the Strait of Hormuz. See east-west-pipeline concept and 2026-09-11-cnbc-saudi-east-west-pipeline-shutdown.
2. Jul-Aug 2026: Houthi declaration of maritime embargo on Saudi Red Sea shipping + sustained attacks — see bab-al-mandab-compounding-scenario "Status: ACTIVE" update and the four ingested source files in compiled/sources/2026-07-* and compiled/sources/2026-08-24-*.

These two events activate the chatham-house-next-hormuz-crisis-could-be-worse-june-2026 "disastrous" compound scenario Chatham House flagged June 18, 2026.

1. Status Snapshot (as of September 16, 2026)¶

Scenario Threshold Table¶

Current State vs Scenario Thresholds¶

2. Signal Checklist — What to Watch Daily / Weekly¶

Daily Signals (publish within 24h of trading day close)¶

1. US Gulf Coast ULSD spot (FRED series DDFUELUSGULF)
   - Units: $/gallon, sometimes quoted in $/barrel
   - Conversion: $/gal × 42 = $/bbl
   - Threshold: $208-215/bbl = Scenario A; $260-300/bbl = Scenario B
   - Current (Sep 9): $4.832/gal = $202.94/bbl (gap to A: +$5; gap to B: +$57-97)

2. ICE Brent futures front month (Reuters / Bloomberg quote)
   - Units: $/barrel
   - Threshold: $98-110 = Scenario A; $115-125 = Scenario B; $130-150 = Scenario C
   - Current (Sep 12): ~$104/bbl

3. WTI futures front month
   - Tracks Brent with typical $3-8/bbl spread
   - Threshold conversion: subtract $5 from Brent for A/B/C bands

4. TankerTrackers / Kpler Bab al-Mandab transit counts
   - Daily vessel counts through Bab al-Mandab Strait
   - Baseline (pre-Jul 20): 30-50 vessels/day
   - Jul 27 floor: 11 cargo vessels (Kpler)
   - Threshold: <20/day sustained = Scenario B territory

Weekly Signals (publish Monday/Tuesday for prior week)¶

5. US retail on-highway diesel (EIA Weekly Retail Gasoline and Diesel Prices)
   - Units: $/gallon, national average
   - Threshold: $4.20-4.50 = Scenario A; $5.20-5.80 = Scenario B
   - Current: $5.20+/gal (at or above Scenario B/C boundary)

6. US diesel inventories (EIA Weekly Petroleum Status Report)
   - 5-year average band: 100-130 mn bbl
   - Trigger: stocks below 100 mn bbl AND falling = Scenario B/C zone

7. Atlantic Basin refinery margins (Bloomberg / Reuters)
   - Units: $/barrel (crack spread)
   - Current: at record levels per IEA Sep 11 OMR
   - Threshold: crack spread >$50/bbl = scarcity pricing zone

8. Houthi attack frequency (UKMTO / JMIC advisories)
   - Count per week of attacks, attempted attacks, seizures in Red Sea / Bab al-Mandab / Gulf of Aden
   - Pre-Jul 2026 baseline: 0-2/week
   - Jul-Aug 2026: ~5-10/week per aggregated UKMTO/JMIC advisories

Monthly Signals¶

9. Saudi Aramco pipeline status statements
   - Track Aramco press releases for pipeline repair timeline updates
   - Critical threshold: confirmation of full operational status + downstream Bab al-Mandab reopen

10. OPEC+ output decisions

    • Track JMMC meetings for any response to the Sep 11 shock
    • Sep 6 meeting: October held flat at September levels
    • Next scheduled JMMC: late September / early October 2026

European-Specific Signals¶

11. German retail diesel (live data from tankerkoenig.de or EU Commission weekly prices)

    • Units: €/liter
    • Threshold: €1.80-2.20 = Scenario A; €2.40-3.00 = Scenario B
    • 8-12 week lag from wholesale shock

12. Northwest European ULSD barge (Argus / Reuters)

    • Premium vs US Gulf Coast ULSD = a measure of European scarcity
    • Currently elevated; precise spread to track

3. Today's Data Points (Sep 9-16, 2026)¶

Key Data Anchors¶

Gap-to-Scenario Visualization (in textual form)¶

Scenario B target: $260-300/bbl diesel wholesale
Current:           $202.94/bbl (Sep 9)
Gap:               +$57 to +$97/bbl (28-48% upside)

Scenario A target: $208-215/bbl diesel wholesale
Current:           $202.94/bbl (Sep 9)
Gap:               +$5 to +$12/bbl (2.5-5.9% upside)

The wholesale market is essentially at the Scenario A threshold but well below Scenario B. The retail market is already at Scenario B/C pricing because of the wholesale surge from mid-August onward that has now worked through to retail.

4. Expected Trajectory (Inferential Ranges)¶

INFERENTIAL CONTENT — these are inferential ranges, NOT point forecasts. They represent conditional paths IF the disruption sustains at current intensity. If Houthi attacks fade, EW pipeline reopens, or Hormuz re-normalizes, these trajectories shift lower.

Conditional Path: Sustained Disruption¶

Critical Assumptions Behind This Trajectory¶

1. EW Pipeline remains shut for 4-8 weeks. Per Politico Sep 14 report, pipeline "out of service for weeks" — but April 2026 precedent showed 3-day repair for single-station strike. Sep 11 attack was multi-station; assume 4-8 week outage (significant uncertainty).
2. Bab al-Mandab remains disrupted. Houthi campaign active since Jul 20; no signs of ceasefire as of Sep 16.
3. No new supply response. OPEC+ holds flat (Sep 6 decision); IEA-coordinated release unlikely without political consensus.
4. Demand destruction continues at IEA's -2.5 mb/d 2026 pace. Higher demand destruction would moderate price impact; lower destruction (e.g., China reversal) would amplify.
5. No Hormuz re-escalation. If Iran re-closes Hormuz tighter, escalates to Scenario C; if Hormuz partially normalizes, downside.

Path B (Disruption Eases Within 2-4 Weeks)¶

If EW pipeline reopens and Houthi pressure eases (ceasefire or US/UK intervention):

• Wholesale pulls back to $185-200/bbl within 2-4 weeks
• Retail plateaus at $5.10-5.30/gal
• Scenario B does NOT materialize — reverts toward Scenario A or Scenario D (pipeline + Bab al-Mandab reopen)

Path C (Hormuz Re-Escalates)¶

If Iran re-tightens Hormuz transit (mine-laying, IRGC harassment escalates):

• Brent spikes to $130-150 (Scenario C)
• Diesel wholesale to $250-280/bbl
• Retail diesel $5.50-5.80/gal
• EU retail €2.80-3.50/L
• Larger macro shock — see energy-shock-reaction-function + inflation-transmission-channel

5. Inferential-Content Flag¶

All Section 4 trajectories are inferential ranges, NOT point forecasts.

• They represent conditional paths IF the disruption sustains at current intensity.
• They do not account for: (a) ceasefire possibilities; (b) successful EW pipeline repair within 1-2 weeks; (c) SPR releases; (d) demand-side acceleration; (e) Iran diplomacy breakthroughs.
• Each conditional path depends on at least 3-5 critical assumptions listed above.
• A 1-week change in disruption status can shift the entire trajectory 1-2 price bands.
• These should be read as scenario watch thresholds, not as expected outcomes.

Confidence bands:
- High confidence: US retail diesel currently at $5.20+/gal (Sep 11 EIA weekly)
- High confidence: EW Pipeline shut since Sep 11
- High confidence: Bab al-Mandab traffic disrupted since Jul 20
- Medium confidence: EW Pipeline repair timeline (4-8 weeks is inferential)
- Medium confidence: Houthi campaign duration (ongoing but intensity variable)
- Lower confidence: Trajectory shape beyond +6 weeks (too many variables)

6. Trigger Watch List¶

Scenario B Confirmed Triggers (Any One Activates Section 4 Path)¶

1. EW Pipeline shut for >4 weeks (currently day 5; next check Sep 25)
2. Brent breaks and holds >$115/bbl for 5+ consecutive trading days
3. ULSD Gulf Coast spot breaks $5.00/gal = $210/bbl sustained
4. Houthi attack frequency exceeds 8/week for 2+ consecutive weeks
5. EU announces additional SPR release at scale (>2 mn bbl)
6. Iran re-escalates Hormuz (Scenario C trigger)

Scenario D Revert Triggers (Disruption Eases)¶

1. EW Pipeline confirmed back to operational status by Aramco
2. Bab al-Mandab traffic returns to >25 vessels/day for 1+ week
3. Houthi-Saudi ceasefire announced
4. OPEC+ announces emergency supply addition (vs holding flat)
5. Brent drops back below $90/bbl

7. Update Protocol¶

This tracker should be updated:

• Daily: Signal #1 (US Gulf Coast ULSD spot) + Signal #4 (Bab al-Mandab transit counts)
• Weekly: Signal #5 (US retail diesel), Signal #6 (US diesel inventories), Signal #12 (NW Europe ULSD barge)
• Monthly: Signals #9 (Aramco pipeline status), #10 (OPEC+ decisions), re-assess all trigger thresholds
• Ad-hoc: Any major Houthi attack, Aramco pipeline repair update, Iran-Hormuz escalation, OPEC+ emergency meeting

The tracker should be cross-referenced from:

• q2-price-impact — primary Q-page link for the diesel/ULSD channel
• refined-products-as-shock-center — refined products structural framing
• bab-al-mandab-compounding-scenario — the active compound disruption
• east-west-pipeline — the pipeline behind Scenario A/B triggers
• price-impact-compound-disruption-2026-09-15 — the parent framework

Related KB Articles¶

Concepts¶

• price-impact-compound-disruption-2026-09-15 — Scenarios A / B / C / D
• bab-al-mandab-compounding-scenario — ACTIVE compound disruption (updated Sep 16)
• east-west-pipeline — pipeline concept
• refined-products-as-shock-center — diesel/ULSD as the binding constraint
• 4q26-supply-cliff-risk — 4Q26 supply cliff
• fragile-reprieve — post-MOU framing now stress-tested
• energy-shock-reaction-function — Fed/ECB reaction function to oil shocks

Sources (Sep 11-12 East-West Pipeline)¶

• 2026-09-11-cnbc-saudi-east-west-pipeline-shutdown
• 2026-09-12-aljazeera-saudi-pipeline-shutdown-explainer
• 2026-09-12-nytimes-saudi-oil-lifeline-attacked
• 2026-09-12-wikipedia-2026-east-west-pipeline-attack

Sources (Jul-Aug Bab al-Mandab)¶

• 2026-07-22-cnbc-houthis-bab-al-mandeb-embargo
• 2026-07-24-bbc-houthi-attacks-fears-wider-conflict
• 2026-07-27-the-hill-houthis-saudi-oil-depots
• 2026-08-24-aljazeera-houthi-attack-saudi-tanker-amzan

Other Tier 1 Same-Week Sources¶

• 2026-09-11-iea-omr-september-2026 — IEA Sep 2026 OMR (US diesel >$200/bbl, refinery margins record)
• 2026-09-09-eia-steo-september-2026 — EIA Sep 2026 STEO

Institutional / Foundational¶

• chatham-house-next-hormuz-crisis-could-be-worse-june-2026 — June 18 "disastrous" scenario now active

Created 2026-09-16 — kb-full-ingest / 1.1-ingest (urgent breaking-news). Status: ACTIVE. Update cadence: daily wholesale + weekly retail; full review monthly or on trigger.

Auto-tracker entry 2026-09-16¶

• US wholesale diesel: $202.94/bbl ($4.832/gal, obs 2026-09-09, FRED DDFUELUSGULF (pre-populated cache; live fetch failed at script write time) (cached))
• EU retail (Germany): €2.460/L (obs 2026-09-16, https://www.benzinpreis-aktuell.de/)
• EUR/USD: 1.1500
• Classification: BASELINE
• Source: scripts/track-prices.py

Sep 17 update — Framework Collapse (JPMorgan "No Baseline View")¶

What happened¶

JPMorgan commodities team (led by Natasha Kaneva) wrote to clients Thursday Sep 17 (2026-09-17-yahoo-finance-jpmorgan-baseline-collapse, concept at jpmorgan-baseline-collapse-2026-09-17):

"For the first time since the start of the Iran conflict, we don't have a baseline view. We simply don't know how to model the endgame."

Followed by:

"We assumed there were economic red lines the US administration would be unwilling to cross... Six months later, many of those lines have been crossed, yet the exit strategy is less clear, not more."

And:

"The assumption that the Middle East disruptions are temporary is becoming increasingly difficult to sustain."

Implication for this tracker¶

This is a framework-failure admission from the institutional baseline modeler, not a parameter revision. It explicitly supersedes the structured two-scenario framework JPM published six days earlier (2026-09-11-jpmorgan-kaneva-forever-war, $87 Forever / $64 End of War).

For this tracker specifically:

1. Price-band thresholds (A/B/C/D) remain valid as watch-thresholds but are now downgraded from "expected outcome ranges" to "test conditions against incoming data". The Section 4 INFERENTIAL CONTENT banner now reads as a structural admission rather than a methodological caveat.
2. Live signal channels (Section 2) gain priority. Daily wholesale diesel + Brent/WTI + Bab al-Mandab transit counts are now the most credible thing this tracker publishes.
3. Regime indicators should become a first-class section — a binary/categorical state of the three ME chokepoints (Hormuz, EW Pipeline, Bab al-Mandab) updated daily. Price bands are downstream of regime; if the regime is undefined, price bands are undefined.
4. The tracker's "trigger watch list" (Section 6) gains weight. Any single trigger on that list now represents a regime-state change rather than a price-band crossing.

Updated classification¶

• Price-only: BASELINE ($202.94/bbl wholesale < $208/bbl Scenario A threshold) — UNCHANGED from Sep 16
• With JPM caveat: STRUCTURAL UNCERTAINTY — the framework that defines "BASELINE" is itself unstable. The classification is technically unchanged because no new price data has crossed a threshold, but the interpretive frame has shifted: BASELINE is now a data point on an undefined regime, not an assertion of regime stability.

Next tracker actions¶

• Re-run scripts/track-prices.py on Sep 17 — log Sep 17 wholesale diesel + Brent/WTI + Bab al-Mandab counts. Compare against Sep 16 values; small moves likely but the regime-shift signal is the JPM note, not the price action.
• Consider adding a "regime state" field to the daily digest (Hormuz: partial-closed / EW Pipeline: down / Bab al-Mandab: ACTIVE embargo).
• Reclassify Scenario A/B/C/D labels as "watch-thresholds" rather than "expected outcomes" in the next major revision.

Sources for this update¶

• 2026-09-17-yahoo-finance-jpmorgan-baseline-collapse — Yahoo Finance coverage of JPM Kaneva client note
• jpmorgan-baseline-collapse-2026-09-17 — KB concept article
• 2026-09-11-jpmorgan-kaneva-forever-war — prior JPM framework (now superseded)
• bab-al-mandab-compounding-scenario — one of the three shocks that broke the framework
• east-west-pipeline — another of the three shocks

Sep 17 update appended by carson subagent (urgent). Classification logic unchanged; interpretive frame updated.

Sep 18 Update — Pakistan Crisis (First Major EM Demand Destruction)¶

What happened¶

On Thursday Sep 17, 2026, Pakistan's federal Cabinet Division announced sweeping austerity measures (announced Sep 17; reported internationally Sep 17-18). See 2026-09-18-dawn-pakistan-austerity-fuel-cut (multi-outlet cross-check) and pakistan-demand-destruction-emergency-2026-09-18 (concept article):

• 50% cut in official vehicle fuel allocations (3-month duration)
• 9 PM market curfew (initially Islamabad; provincial governments encouraged to follow)
• 10 PM marriage-hall curfew; 11 PM restaurant curfew (takeaway exempt)
• Complete ban on government foreign travel (3 months)
• Complete ban on government vehicle and durable-goods purchases
• 5% reduction in non-essential recurring government expenditure (FY 2026-27)
• Single-dish restriction at marriage functions

This is the first national-level government-mandated fuel rationing in the 2026 Hormuz crisis. No prior KB source documents a country imposing fuel rationing, foreign travel ban, or marriage-hall curfew for fuel conservation.

Implication for Scenarios A/B/C¶

Key insight: This is a demand-side shock, not a supply-side shock¶

The Pakistan package (and any subsequent EM follow-ons) is demand-destruction-led. Combined with the supply-side tightening captured by the existing A/B/C framework, this creates a Kuznets-style paradox: supply tightening + demand destruction can result in flat or even LOWER prices even as physical availability worsens.

For this tracker specifically:

1. Price-band thresholds (A/B/C/D) remain valid as watch-thresholds but are now subject to a demand-destruction offset. The Section 4 inferential trajectories may be upper bounds rather than central cases.
2. Live signal channels (Section 2) gain priority — same as the Sep 17 JPM framework collapse update.
3. A new signal channel is needed: aggregate EM government-mandated demand rationing. Watch for India, Bangladesh, Indonesia, Philippines, Vietnam, and other large oil-importing EMs to announce similar measures in the next 1-4 weeks.
4. The tracker regime indicators (Hormuz/EW/Bab al-Mandab) should now include a fourth: "EM demand destruction in effect" — a binary/categorical state of whether 1+ EM has imposed government-mandated demand rationing.

Updated classification (Sep 18)¶

• Price-only: BASELINE ($202.94/bbl wholesale < $208/bbl Scenario A threshold) — UNCHANGED from Sep 17
• With Sep 17 JPM caveat: STRUCTURAL UNCERTAINTY — UNCHANGED
• With Sep 18 Pakistan update: STRUCTURAL UNCERTAINTY + EM-DEMAND-DESTRUCTION RISK — the supply-side scenario framework is now subject to a demand-side offset that was not in the original A/B/C design.

The interpretive frame is: the existing A/B/C scenarios are upper-bound supply-side trajectories; the realized price path may be lower because EM demand destruction is now operating in parallel. Whether this materializes depends on whether 3-5+ EMs follow Pakistan's lead by ~Oct 18 (4-week follow-on window).

Next tracker actions¶

• Watch India, Bangladesh, Indonesia, Philippines, Vietnam for similar announcements in the next 1-4 weeks.
• Add a new daily signal channel: "EM demand-destruction news" (search filter for "fuel rationing" / "austerity measures" / "foreign travel ban" + EM country names).
• Re-run scripts/track-prices.py on Sep 18 — log Sep 18 wholesale diesel + Brent/WTI + Bab al-Mandab counts. Pakistan event is the regime-shift signal, not price action.
• Add a "regime state" field to the daily digest if not already present: Hormuz / EW Pipeline / Bab al-Mandab / EM-demand-destruction.

Sources for this update¶

• 2026-09-18-dawn-pakistan-austerity-fuel-cut — multi-outlet source (Dawn primary; 8 cross-checks)
• pakistan-demand-destruction-emergency-2026-09-18 — new concept article
• diwan-peak-demand-thesis — Sep 18 update appended (real-world EM demand destruction evidence)
• demand-destruction-dual-risk — stub concept; upgradeable to full article
• refined-products-as-shock-center — refined products framing
• price-impact-compound-disruption-2026-09-15 — original scenario framework
• jpmorgan-baseline-collapse-2026-09-17 — Sep 17 framework collapse (still in effect)

Sep 18 update appended by carson subagent (urgent — first major EM demand destruction event). Classification: STRUCTURAL UNCERTAINTY + EM-DEMAND-DESTRUCTION RISK. Aggregate EM follow-on (3-5 EMs in next 4 weeks) is the key variable.

Sep 22 Update — East-West Pipeline Partial Restart (Low Rate)¶

What happened¶

Per 2026-09-22-reuters-saudi-ew-pipeline-restart (Reuters, captured via US News syndication; direct reuters.com returned 401/JS-gated):

SINGAPORE/NEW DELHI, Sept 22 (Reuters) — Saudi Arabia has restarted operations at its East-West Pipeline and could resume exports from the Red Sea port of Yanbu later on Tuesday, three sources briefed on the matter said.

The pipeline was pumping at a low rate after its restart, two of the sources said.

State oil firm Saudi Aramco did not immediately respond to a request for comment.

One of the sources said Aramco was seeking to get the pumping rate back to 4 million bpd, while a security source said full resumption could take weeks.

One cargo was scheduled to load at Yanbu later on Tuesday ... bound for China.

Another two trading sources said traders were getting ready for Saudi oil loadings by moving tankers to Egypt's Mediterranean Port Said for ship-to-ship transfers and also to Sidi Kerir.

Three sources briefed; one trading source; one security source; no Aramco on-the-record statement.

What did NOT happen (Sep 22)¶

1. No full restart. Initial rate is "low" (rate undisclosed; Aramco target = 4 mb/d).
2. No Bab al-Mandab reopening. The wire does not address downstream Red Sea status; per bab-al-mandab-compounding-scenario the Houthi embargo and Mayun island seizure remain active.
3. No Aramco public confirmation. Reuters comment request unanswered at time of publication.
4. No Hormuz normalization. Saudi loaded 7 VLCCs / 14 mmbbl at Ras Tanura over the weekend (The National, Sep 22) — Hormuz loadings ramped up to compensate, not because Hormuz has normalized.
5. No Houthi de-escalation. Attack frequency unchanged per this wire.

Implication for the EW Pipeline Status field on Section 1 Status Table¶

Previously: SHUT since Sep 10-11.
Now: PARTIAL RESTART — LOW RATE (Sep 22), target 4 mb/d, full restoration weeks-scale.

This means one of the three chokepoints has been partially relieved. But the relief is:
- Initial rate well below 4 mb/d (no number disclosed; "low rate" framing).
- Subject to damage assessment not yet public (multiple pumping stations hit in Riyadh + Medina regions).
- Conditional on Bab al-Mandab downstream for the southern Yanbu routing; the Sep 22 first cargo is routing north via Mediterranean (Port Said STS / Sidi Kerir), not south to Bab al-Mandab.
- Not equivalent to Aramco confirming operational status. The "no Aramco comment" is notable — companies of Aramco's size usually issue statements on pipeline status. Silence here may reflect operational security concerns or pending engineering assessment.

Brent Reaction¶

• Reuters: "Brent crude futures fell by more than $2 a barrel to its lowest since September 8."
• The National: Brent $97.81 / WTI $89.50 at 14:19 UAE time Sep 22; "Brent crude below $100 per barrel for the first time in recent weeks, settling around $100 on September 21."

This is a partial reversal of the Sep 11–21 risk premium (Brent was ~$104/bbl Sep 12). Brent moved from the upper end of Scenario A ($98-110) toward the lower end. Scenario B threshold ($115-125) is now further away ($15-27/bbl gap, vs $11-21/bbl gap Sep 16).

Implications for the Section 4 Trajectories¶

The Sep 22 partial restart compresses the upside trajectories in Section 4 but does not collapse them:

The "Path B becoming the working base case" is the key shift. The Sep 16 framework assumed sustained disruption as the working assumption. The Sep 22 partial restart, combined with Hormuz-side ramp-up at Ras Tanura, makes Path B more plausible. However:

• The Path B framing assumes EW pipeline fully recovers within 2-4 weeks AND Bab al-Mandab reopens. Neither has happened yet. The Reuters wire gives no timeline for Bab al-Mandab; the EW pipeline is partial-restart with "weeks" to full.
• The Path B framing assumes EM demand destruction holds — this is still the case (Pakistan Sep 17 still in effect, no new EMs announced in the Sep 22 wire).
• The Path B framing assumes Hormuz does not re-escalate — no change in either direction.

Net assessment: Path B (disruption eases) is now the conditional base case, conditional on EW reaching 4 mb/d within stated "weeks" AND Bab al-Mandab reopening AND Hormuz not re-escalating AND EM demand destruction persisting. All four conditions must hold for Path B. Failure of any one condition reverts to the sustained-disruption path or Hormuz-re-escalation path.

Implications for the Section 6 Trigger Watch List¶

Implications for the Sep 17/18 Classification¶

• Sep 17 classification: STRUCTURAL UNCERTAINTY (JPM framework collapse) — unchanged.
• Sep 18 classification: + EM-DEMAND-DESTRUCTION RISK — unchanged.
• Sep 22 update: + EW PARTIAL-RESTART (WEEKS-SCALE FULL) — new modifier. The framework is now in STRUCTURAL UNCERTAINTY + EM-DEMAND-DESTRUCTION RISK + EW PARTIAL-RESTART. All three modifiers operate simultaneously. Net direction is downward-leaning (toward Path B / Scenario D) but fragile — none of the four Path B conditions are fully met.

Updated Regime Indicators¶

One of four regime indicators has shifted (EW Pipeline: SHUT → PARTIAL LOW-RATE). The other three are unchanged. The shift is downward pressure on prices but conditional on weeks-scale completion of EW full restoration and Bab al-Mandab reopening.

Q-Page Implications (NOT Updated in This Intake)¶

Per task acceptance criteria, Q1/Q2/Q3 are updated only if the new evidence materially changes the current-state summary. The Sep 22 partial restart:

• Materially shifts the EW Pipeline status field (in east-west-pipeline and bab-al-mandab-compounding-scenario) but does not materially shift the 11–13 mb/d Q1 baseline.
• Partially shifts the Brent price band (from ~$104 to ~$97-100) but does not move out of the Scenario A range and does not trigger Q2 framework revisions.
• Adds a Mediterranean re-route detail (Port Said / Sidi Kerir) that is relevant to Q3 but is a 1-2 cargo story, not yet a Europe-wide supply channel.

No Q-page edit is justified at this intake. Flagged for future intake once (a) the actual EW restart rate is disclosed or (b) Bab al-Mandab status changes or (c) Brent moves out of the Scenario A band.

Next Tracker Actions¶

1. Re-run scripts/track-prices.py on Sep 22 — log Sep 22 wholesale diesel + Brent/WTI + Bab al-Mandab counts. Compare against Sep 16/18 values; Brent should show the partial-restart reaction.
2. Watch for Aramco public statement on the EW Pipeline status. The "no comment" at time of publication is unusual for Aramco; a follow-up statement (or continued silence) is itself a signal.
3. Watch the first post-restart Yanbu cargo. If it actually loads Sep 22 evening bound for China, this confirms partial restart. If loading slips, this suggests engineering issues.
4. Watch Bab al-Mandab traffic counts for the next 1-2 weeks. If Houthi pressure eases, traffic recovers toward 25-30 vessels/day. If pressure holds or escalates, the EW partial-restart may be largely cosmetic for south-bound Yanbu crude.
5. Watch Mediterranean pre-positioning at Port Said and Sidi Kerir. This is the new north-bound routing pattern; if multiple Saudi cargoes follow, it represents a structural shift in Saudi export routing.
6. Add a regime-state field to the daily digest if not already present: Hormuz / EW Pipeline / Bab al-Mandab / EM-demand-destruction.

Sources for this update¶

• 2026-09-22-reuters-saudi-ew-pipeline-restart — canonical primary source (Reuters, three sources briefed)
• 2026-09-23-tankertrackers-x-usn-bl-13mbpd — TankerTrackers (@TankerTrackers, X post 2102728349932019787, Sep 23 11:54 UTC) physical-flow confirmation: USN-BL = 13 Mbpd / SoH = 10.35 Mbpd / bypass = 2.65 Mbpd; "doubled in less than a month" framing; confirms Saudi swung back east + CENTCOM daytime SoH transits. Observed flow — NOT additive to 15–17 mb/d / 11–13 mb/d disruption estimates.
• east-west-pipeline — concept update with Sep 22 partial-restart status, implications for export routing / production shut-ins / 14-18 mb/d reconciliation
• 2026-09-12-thierry-bros-x-shock-14mbd-disrupted — 14 mb/d reconciliation now in 15-17 mb/d (full) / 11-13 mb/d (production-cut) range
• bab-al-mandab-compounding-scenario — downstream unchanged
• pakistan-demand-destruction-emergency-2026-09-18 — EM demand destruction unchanged
• jpmorgan-baseline-collapse-2026-09-17 — STRUCTURAL UNCERTAINTY framework unchanged

Sep 22 update appended by carson subagent. Classification: STRUCTURAL UNCERTAINTY + EM-DEMAND-DESTRUCTION RISK + EW PARTIAL-RESTART (WEEKS-SCALE FULL). Path B (disruption eases) is now the conditional base case but requires four conditions: EW full restoration to 4 mb/d, Bab al-Mandab reopening, no Hormuz re-escalation, EM demand destruction persistence. Q-pages intentionally not edited per task acceptance criteria.