Spills

Mystery oil Spill4; suisun bay, concord, california

NOAAORR-6676

issued: 1989-03-06 00:00Z
status: cancelled 1989-03-20 00:00Z
self-cancels: 1989-03-20 00:00Z
authority: NOAA OR&R
sea: North Pacific Ocean
position: 38.064, -122.022
source: incidentnews · first seen 2026-09-03 15:09Z

Original warning text

Mystery Oil Spill4; Suisun Bay, Concord, California.
Suisun Bay, Concord, California.
1. On March 6, 1989, a U.S. Coast Guard Marine Safety Office (MSO), Alameda, helicopter overflight observed an oil slick, measuring approximately 30 meters wide by eight miles long, and extending along the southern side of the shoreline from Naval Weapons Station Concord. USCG district 11.
2. COMMODITY: OIL.
3. POSITION 38.064N 122.022W. NOAA INCIDENTNEWS 6676: https://incidentnews.noaa.gov/incident/6676

This area · spills & pollution incidents

244 within 180 nm since 1971 · 13 in the last 12 months · 2 in force now

1900 CA-1, moss landing, ca 95039, USA2026-08-30
32CC+C7 inverness, ca, USA2026-08-21
J444+RW monterey, ca, USA2026-08-13
1809 sunset dr, pacific grove, ca 93950, USA2026-08-07
R685+56 moss landing, ca, USA2026-08-07
841 w brannan island rd, isleton, ca 95641, USA2026-07-31

Season · when spills & pollution incidents happen here

month of issue, all years in the archive

Timeline · 7 messages since 1989-01-31 · closed 1989-05-01

Stevedoring services of america 2; san francisco, california1989-01-31 → 1989-02-14
San francisco, california1989-02-04 → 1989-02-18
Mystery oil Spill4; suisun bay, concord, california this message1989-03-06 → 1989-03-20
San francisco, california1989-03-31 → 1989-04-14
On april 10, 1989, there was an explosion and fire at chevron's hydrocarbon cracking tower at the richmond…1989-04-10 → 1989-04-24
On april 12, 1989, a fuel line ruptured at the alameda county transit company in emeryville, california,…1989-04-13 → 1989-04-27
Army 87th explosive ordnance detachment; san rafael, california1989-04-17 → 1989-05-01

joined by proximity

Nearby now · within 120 nm

32CC+C7 inverness, ca, USASpills · 45.3 nm
1900 CA-1, moss landing, ca 95039, USASpills · 76 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.