Spills

Upper cook inlet, alaska

Marathon Spark Platform; Upper Cook Inlet, Alaska · NOAAORR-6632

issued
1988-11-14 00:00Z
status
cancelled 1988-11-28 00:00Z
self-cancels
1988-11-28 00:00Z
authority
NOAA OR&R
sea
Gulf of Alaska
position
60.997, -150.729
source
incidentnews · first seen 2026-09-03 15:09Z

Original warning text

Marathon Spark Platform; Upper Cook Inlet, Alaska.
Upper Cook Inlet, Alaska.
1. On November 14, 1988, a water well off the Marathon Oil Company Spark platform accidentally communicated with an oil reservoir, releasing approximately 20 barrels of Cook Inlet crude into Upper Cook Inlet, Alaska. A snow storm and poor visibility prevented the U.S. Coast Guard from monitoring the oil slick until that afternoon. USCG district 17.
2. COMMODITY: COOK INLET CRUDE. MAXIMUM POTENTIAL RELEASE: 840 GALLONS.
3. POSITION 60.997N 150.729W. NOAA INCIDENTNEWS 6632: https://incidentnews.noaa.gov/incident/6632

This area · spills & pollution incidents

111 within 180 nm since 1985 · 5 in the last 12 months · 1 in force now

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month of issue, all years in the archive

Timeline · 3 messages since 1988-11-02 · closed 1988-12-26

  1. Trading bay, upper cook inlet, alaska1988-11-02 → 1988-11-16
  2. Upper cook inlet, alaska this message1988-11-14 → 1988-11-28
  3. Nikiski, cook inlet, alaska1988-12-12 → 1988-12-26

joined by proximity

Nearby now · within 120 nm

Worldwide now

8 spills & pollution incidents in force · see all

Spills

Oil and chemical spills, groundings and vessel casualties with a pollution threat: NOAA IncidentNews responses since 1957, and spill-response areas broadcast as navigational warnings. All current spills & pollution incidents →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.