Navigational warnings, week 2026-W31
2026-07-27 to 2026-08-02 UTC
- issued
- 54
- cancelled
- 13
- in force at end
- 841
- of these still in force
- 22
Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so this period is under-counted.
Issued · by type
| Surveys | 14 |
| Quakes | 12 |
| Nav aids | 11 |
| Exercises | 8 |
| Spills | 2 |
| Cable ops | 2 |
| Other | 2 |
| Towing | 1 |
| Missiles | 1 |
| Derelicts | 1 |
Issued · by sea
| North Pacific Ocean | 7 |
| South Atlantic Ocean | 6 |
| Indian Ocean | 5 |
| South Pacific Ocean | 5 |
| Coral Sea | 4 |
| North Sea | 4 |
| Eastern China Sea | 2 |
| Japan Sea | 2 |
HYDROPAC 13 · USGS earthquakes 12 · HYDROLANT 8 · AUSCOAST 3 · NAVAREA IV 3 · UKWZ 3 · NAVAREA III 3 · NAVAREA VII 2 · NOAA IncidentNews 2 · NAVAREA XI 2 · HYDROARC 1 · NAVAREA XII 1 · NAVAREA X 1
Issued · 54
- Other · NAVAREA 7 217/26in force00:00ZNAVAREA VII 217 of 2026: (27 jul 26) 1. namibia - offshore orange river mouth 2. charts san 75 (int 2630),…
- Surveys · HYDROLANT 1445/2609:40ZUnderwater operations by vessel UMI Polaris in the South Atlantic off Brazil from 28 July to 19 August, wide berth requested.South Atlantic · Brazil
- Exercises · HYDROPAC 2151/26in force11:48ZGunnery exercises occur daily from 2200Z to 1000Z on July 31, August 2-14, 16-21, 23-28, and 30 in the Sea of Japan near Russia.Sea of Japan · Russia
- Exercises · NAVAREA XI 342/2612:00ZGunnery exercise in North Pacific near Nanpo Shoto daily from 31 July to 30 August, 2300Z to 0900Z, in a bounded area.North Pacific, Nanpo Shoto · Gunnery
- Exercises · NAVAREA XI 341/2612:00ZGunnery exercise in Japan Sea occurs daily 2200Z to 1000Z on specified dates from 31 July to 30 August in a bounded area.Japan Sea · Gunnery
- Exercises · HYDROPAC 2152/26in force12:02ZGunnery exercises daily 2300-0900 Zulu, July 31 to August 30, North Pacific area bounded by 28-15N 146-30E, 25-25N 147-38E, 25-00N 145-36E, 27-55N 145-58E.North Pacific
- Nav aids · UKWZ 465/26in force16:50ZFowey Light at 50-19.6N 004-38.9W is unreliable.Plymouth
- Nav aids · HYDROLANT 1448/26in force17:03ZFowey Light at 50-19.60N 004-38.90W in the English Channel near England is unreliable.English Channel · England
- Surveys · AUSCOAST 255/2623:31ZVessel Fugro Kwilena is conducting underwater operations in an area bounded by 19-56.69 S to 20-26.06 S and 114-45.09 E to 115-30.10 E, requesting 1.5 nautical miles clearance.
- Surveys · HYDROPAC 2157/2623:59ZUnderwater operations are underway by the vessel Fugro Kwilena in the eastern Indian Ocean off Australia until further notice. A two-mile berth is requested.Eastern Indian Ocean · Australia
- Spills · NOAAORR-1119300:00ZRelease of aluminum phosphide in M/V thorco liva; port arthur, texas
- Towing · NAVAREA III 113/2600:00ZTowing vessel Manta is towing the Henry Goodrich platform to Aliaga port with a 600-meter trailer, wide berth requested, until August 26.Mediterranean Sea
- Surveys · NAVAREA III 114/2600:00ZDrilling operations by the Abdulhamid Han are underway in the Black Sea until 202059 UTC August 26, with a 10 nautical mile berth requested.Black Sea
- Nav aids · UKWZ 466/26in force01:22ZThe Mid Haisbro buoy in Humber at 52-54.2N 001-41.6E is unlit.Humber
- Quakes · USGS-US6000TGAE04:42Z152 km e of ust’-kamchatsk staryy, russia
- Quakes · USGS-US6000TGAU05:35Z54 km sw of brisas barra de suchiate, mexico
- Quakes · USGS-US6000TGB907:27ZThe 2026 kumamoto region, japan earthquake
- Quakes · USGS-US6000TGBM08:08Z15 km ssw of honmachi, japan
- Cable ops · HYDROPAC 2163/26in force09:30ZCable operations are underway in the South Pacific by the vessel Layla along a trackline; a five-mile berth is requested.South Pacific
- Surveys · NAVAREA X 87/26in force21:38ZSurvey vessel PMG Emerald is conducting operations in an area bounded by 15-26.25 S to 20-57.00 S and 167-08.20 E to 169-17.00 E, requesting 2.5 nautical miles clearance.
- Surveys · HYDROPAC 2168/26in force23:19ZSurvey operations are underway in the Coral Sea near Vanuatu by the vessel PMG Emerald, requesting a three-mile berth, until further notice.Coral Sea · South Pacific · Vanuatu
- Other · NAVAREA 7 221/26in force00:00ZNAVAREA VII 221 of 2026: (29 jul 26) 1. south atlantic ocean - ne sector - offshore oranjemund 2. charts san…
- Exercises · HYDROLANT 1457/26in force00:59ZHazardous operations are in progress in the South Atlantic until 060400Z June 27 near 24-39S 042-30W; two-mile berth requested.South Atlantic
- Surveys · AUSCOAST 257/2601:09ZVessel Investigator is conducting a scientific survey towing equipment in an area bounded by coordinates from 21-52S 150-47E to 24-22S 152-51E; 1 nautical mile clearance requested.
- Surveys · HYDROPAC 2171/2604:11ZSurvey operations are underway by vessel Investigator in the Coral Sea near Australia until further notice, with a one-mile berth requested.Coral Sea · Australia
- Exercises · HYDROLANT 1462/26in force08:47ZHazardous operations are occurring off Brazil in a bounded area from August 3 through September 11.South Atlantic · Brazil
- Quakes · USGS-US6000TGUD22:08ZEarthquake magnitude 5.5 (mww) in 65.088S 179.367W, depth 10 km at 292208Z jul 26Pacific-antarctic Ridge
- Quakes · USGS-US6000TGUF22:27ZEarthquake magnitude 5.9 (mww) in 28.409S 176.660W, depth 14 km at 292227Z jul 26Kermadec Islands Region
- Nav aids · NAVAREA IV 737/2623:41ZU.S. Coast Guard remote communication facility at New Orleans, Louisiana is off air for high-frequency digital selective calling.Gulf of Mexico · Louisiana
- Nav aids · NAVAREA III 115/26in force00:00ZAlexandria NAVTEX station is out of service until further notice.Eastern Mediterranean Sea
- Quakes · USGS-US6000TGVZ05:08ZEarthquake magnitude 5.8 (mww) in 28.584S 176.637W, depth 10 km at 300508Z jul 26Kermadec Islands Region
- Quakes · USGS-US6000TI3S05:08ZEarthquake magnitude 5.6 (mb) in 28.782S 176.450W, depth 10 km at 300508Z jul 26Kermadec Islands Region
- Surveys · HYDROARC 152/26in force11:19ZSurvey operations are underway in the Kara Sea, Russia, until September 30, wide berth requested.Kara Sea · Russia
- Nav aids · HYDROLANT 1471/26in force12:36ZAlexandria navigation telex station in the Eastern Mediterranean, at 31-11.92N 029-51.86E, is off air.Eastern Mediterranean Sea · Egypt
- Quakes · USGS-US6000TH1H17:55Z244 km nne of colonia, micronesia
- Spills · NOAAORR-1119400:00Z841 w brannan island rd, isleton, ca 95641, USAVessel Sinking In San Joaquin River; Isleton, California
- Exercises · HYDROPAC 2187/26in force11:11ZHazardous operations occur daily from 0001Z to 1600Z August 1-31 except Fridays and Saturdays in four areas of the Bay of Bengal, Bangladesh.Bay of Bengal · Bangladesh
- Nav aids · HYDROPAC 2188/26in force11:36ZRadar beacon at Oyster Rocks light (14-49.22N 074-03.63E) is inoperative.Arabian Sea · India
- Exercises · HYDROPAC 2190/26in force13:38ZHazardous operations occur daily on 3,7,10,14,17,21,24,28,31 August in an area near 10N 76E, Eastern Indian Ocean.Eastern Indian Ocean · India
- Surveys · HYDROLANT 1477/2613:53ZSurvey operations are in progress in the North Sea off Norway, with vessel Amazon Conqueror towing eight 1609-meter cables; two-mile berth requested.North Sea · Norway
- Surveys · NAVAREA IV 743/2619:22ZUnderwater operations by vessels Atlantis and Alvin near Cayman Islands from August 2 to August 18, within 100 miles of 18°23'N 081°47'W, wide berth requested.Caribbean Sea · Cayman Islands
- Cable ops · NAVAREA XII 523/2601:14ZCable operations are underway by M/V Grace in the North Pacific along a trackline; a two-mile berth is requested.North Pacific
- Quakes · USGS-US6000THDK02:48Z63 km e of mutsu, japan
- Quakes · USGS-US6000THEJ04:49Z192 km sw of port mcneill, canada
- Surveys · HYDROLANT 1484/2612:41ZUnderwater operations by M/V Comando B and M/V Royal Topaz at 20-21.62S 040-08.00W off Brazil, August 2-16, wide berth requested.South Atlantic · Brazil
- Nav aids · HYDROPAC 2200/26in force15:22ZFairway buoy at 24-43.14N 066-55.86E is missing.Arabian Sea · Pakistan
- Derelicts · HYDROPAC 2202/2618:20ZThe ship Gazlog Shanghai is disabled and adrift in the Strait of Hormuz near Oman at position 26-05.11N 056-35.40E as of 312330Z July.Strait of Hormuz · Oman
- Surveys · AUSCOAST 260/26in force18:39ZSpecial purpose vessel Bhagwan Dryden is conducting underwater operations at position 20-06.96S 116-26.11E, requesting 2.5 nautical miles clearance.
- Surveys · HYDROPAC 2203/26in force18:51ZUnderwater operations by the vessel Bhagwan Dryden at 20-06.96S 116-26.11E in the Eastern Indian Ocean, Australia, request a three-mile berth.Eastern Indian Ocean · Australia
- Nav aids · HYDROLANT 1488/2621:09ZMedium frequency DSC and radiotelephone services are off air at Bawdsey, Cullercoats, and Gregness site. Hydrolant 1441/26 is cancelled.North Sea · England
- Quakes · USGS-US6000THL308:35Z12 km w of hicks bay, new zealand
- Missiles · HYDROPAC 2235/2616:29ZSpace debris hazard operations are scheduled in the Eastern Indian Ocean and South Pacific on August 10-16, 2026, during specific time windows.Eastern Indian Ocean · South Pacific
- Nav aids · NAVAREA IV 750/2620:42ZNAVTEX station Miami at 25-30N 080-23W is inoperative; NAVAREA IV 748/26 is cancelled.Western North Atlantic · Florida
- Nav aids · UKWZ 469/26in force21:08ZSouthwark platform at 53-11N 002-05.8E in the Humber is unlit and all navigational aids are inoperative.Humber · Inner Bank
Cancelled · 13
- Quakes · USGS-US7000T37A21:37Z63 km wsw of sola, vanuatu
- Quakes · USGS-US7000T3FM08:35Z103 km se of atka, alaska
- Spills · NOAAORR-1118700:00Z6R9Q+8XF, mayagüez, 00682, puerto ricoSheen Surrounding Vessel Jaira Provider; Mayagüez, Puerto Rico
- Quakes · USGS-US6000TGAE04:42Z152 km e of ust’-kamchatsk staryy, russia
- Quakes · USGS-US6000TGAU05:35Z54 km sw of brisas barra de suchiate, mexico
- Quakes · USGS-US6000TGB907:27ZThe 2026 kumamoto region, japan earthquake
- Quakes · USGS-US6000TGBM08:08Z15 km ssw of honmachi, japan
- Spills · NOAAORR-1118800:00Z3414 a california st, everett, wa 98201, USAFishing Vessel Sinking In Snohomish River; Everett, Washington
- Quakes · USGS-US6000TGUD22:08ZEarthquake magnitude 5.5 (mww) in 65.088S 179.367W, depth 10 km at 292208Z jul 26Pacific-antarctic Ridge
- Quakes · USGS-US6000TGUF22:27ZEarthquake magnitude 5.9 (mww) in 28.409S 176.660W, depth 14 km at 292227Z jul 26Kermadec Islands Region
- Quakes · USGS-US6000TGVZ05:08ZEarthquake magnitude 5.8 (mww) in 28.584S 176.637W, depth 10 km at 300508Z jul 26Kermadec Islands Region
- Quakes · USGS-US6000TI3S05:08ZEarthquake magnitude 5.6 (mb) in 28.782S 176.450W, depth 10 km at 300508Z jul 26Kermadec Islands Region
- Quakes · USGS-US6000TH1H17:55Z244 km nne of colonia, micronesia
Not for navigation. Counts include only warnings we display; ongoing search-and-rescue traffic is excluded until 30 days after it closes.