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GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

Detailed information

Locations affected by Wave (46 locations).
Date of maximum Wave	Name	Wave height (m)	City size	Delay of maximum tsunami (hours)	Delay of tsunami arrival (hours)	Location (lat/long)

United States
4-May-2018 22:33:64	Opihikao	0.7m	Town	00:01	00:01	19.43 / -154.88
4-May-2018 22:33:64	Pohoiki	0.7m	Populated place	00:01	00:01	19.47 / -154.85
4-May-2018 22:39:38	Kupaahu	0.3m	Populated place	00:08	00:01	19.34 / -155.01
4-May-2018 22:33:64	Kalapana	0.3m	Town	00:01	00:01	19.35 / -154.98
4-May-2018 22:33:38	Koae	0.2m	Populated place	00:02	00:02	19.53 / -154.85
4-May-2018 22:47:00	Royal_Gardens	0.2m	Populated place	00:15	00:01	19.36 / -155.04
4-May-2018 22:51:38	Kaalualu	0.1m	Populated place	00:20	00:11	18.98 / -155.62
4-May-2018 22:56:00	Honuapo	0.1m	Populated place	00:24	00:10	19.1 / -155.55
4-May-2018 22:48:38	Hilea	0.1m	Populated place	00:17	00:10	19.14 / -155.54
4-May-2018 22:51:38	Naalehu	0.1m	Populated place (population 919)	00:20	00:11	19.06 / -155.59
4-May-2018 22:53:00	Hakalau	0.1m	Populated place	00:21	00:13	19.9 / -155.13
4-May-2018 22:53:00	Honomu	0.1m	Populated place (population 541)	00:21	00:13	19.87 / -155.12
4-May-2018 23:17:00	Papaikou	0.1m	Populated place (population 1414)	00:45	00:12	19.79 / -155.1
4-May-2018 23:17:00	Wainaku	0.1m	Populated place (population 1227)	00:45	00:13	19.75 / -155.1
4-May-2018 23:17:00	Paukaa	0.1m	Populated place (population 495)	00:45	00:13	19.76 / -155.1
4-May-2018 23:17:00	Hilo	0.1m	City (population 40759)	00:45	00:16	19.72 / -155.08
4-May-2018 22:57:64	Weloka	0.1m	Town	00:25	00:15	19.96 / -155.2
4-May-2018 22:57:64	Ninole	0.1m	Populated place	00:25	00:15	19.94 / -155.17
4-May-2018 22:47:00	Hawaiian_Paradise_Park	0.1m	Populated place (population 7051)	00:15	00:06	19.59 / -154.97
4-May-2018 22:47:00	Makuu	0.1m	Populated place	00:15	00:06	19.59 / -154.93
4-May-2018 22:45:38	Hawaiian_Beaches	0.1m	Populated place (population 3709)	00:14	00:05	19.54 / -154.92
4-May-2018 22:45:64	Pepeekeo	0.1m	Populated place (population 1697)	00:13	00:12	19.83 / -155.11
4-May-2018 23:03:38	Puuiki	0.1m	Populated place	00:32	00:29	20.71 / -156
4-May-2018 23:03:38	Hana	0.1m	Populated place (population 709)	00:32	00:29	20.76 / -155.99
4-May-2018 22:57:38	Papaaloa	0.1m	Populated place	00:26	00:15	19.98 / -155.23
4-May-2018 22:57:38	Laupahoehoe	0.1m	Populated place (population 473)	00:26	00:26	19.98 / -155.24
4-May-2018 23:09:38	Haou	0.1m	Town	00:38	00:29	20.7 / -156.01
4-May-2018 22:48:38	Waiahukini	0.1m	Populated place	00:17	00:12	18.96 / -155.7
4-May-2018 23:14:00	Halaula	0.1m	Populated place (population 495)	00:42	00:24	20.24 / -155.78
4-May-2018 23:14:00	Makapala	0.1m	Populated place	00:42	00:24	20.22 / -155.75
4-May-2018 23:14:00	Niulii	0.1m	Town	00:42	00:24	20.23 / -155.75
4-May-2018 23:24:64	Captain_Cook	0.1m	Populated place (population 3206)	00:52	00:37	19.5 / -155.93
4-May-2018 23:24:64	Napoopao	0.1m	Populated place	00:52	00:37	19.48 / -155.92
4-May-2018 23:12:38	Ookala	0.1m	Town	00:41	00:33	20 / -155.29
4-May-2018 23:24:38	Keauhou	0.1m	Town	00:53	00:32	19.57 / -155.96
4-May-2018 23:03:38	Kapaau	0.1m	Populated place (population 1159)	00:32	00:27	20.23 / -155.81
4-May-2018 23:05:00	Muolea	0.1m	Populated place	00:33	00:32	20.69 / -156.02
4-May-2018 23:17:00	Honaunau	0.0m	Town	00:45	00:45	19.43 / -155.91
4-May-2018 23:17:00	Keokea	0.0m	Populated place	00:45	00:45	19.42 / -155.88

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While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.