July 29, 2021 Alaska Tsunami

On 2021/07/29, southeast of Perryville, Alaska (south of the Alaska Peninsula), a magnitude 8.2 earthquake occurred.

This page provides data from the Deep-ocean Assessment and Reporting of Tsunami (DART®) buoys and processed NOAA/NOS/CO-OPS coastal tide-gauge stations. Files contain raw observations, fitted tidal components, and residual tide values. The DART® data are the real-time water level data (in meters) as recorded by the Bottom Pressure Recorder (BPR) in extended-reporting mode containing measurement types of 15 minutes, 1 minute, and 15 seconds. Real-time data were extracted from the National Data Buoy Center.

For DART 4G 46403 and 46410 data, records may be provided upon request. On the right of the Tsunami Travel Time map below there are links to individual data files under column Data. The columns in those files are as follows: Time is in Julian days from the beginning of the year, Year, Month, Day, Hours, Minutes, Seconds, Raw Observations, Fitted tidal component, and computed residuals in meters water column.

Details on the data processing methods.

DART® Stations Table
Station number	Station name and location	Latitude [deg]	Longitude [deg]	Data [m]	Plot
21414	170 NM South of Amchitka, AK	48.9672 N	178.2275 E	*	*
21415	175 NM South of Attu, AK	50.1530 N	171.8970 E	*	*
21416	240 NM SE of Kamchatka Peninsula, RU	38.7667 N	148.6525 E	*	*
21418	450 NM NE of Tokyo, JP	38.7667 N	148.6525 E	*	*
21419	209 NM SE of Kuril Is	44.4011 N	155.6534 E	*	*
46402	220 NM SSE of Dutch Harbor, AK	50.9783 N	163.9483 W	*	*
46404	230 NM West of Astoria, OR	45.8483 N	128.7750 W	*	*
46407	210 NM West of Coos Bay, OR	42.7083 N	127.8250 W	*	*
46408	212 NM South of Umnak Is, AK	49.6519 N	169.8944 W	*	*
46409	210 NM SE of Kodiak, AK	55.3092 N	148.5407 W	*	*
46413	243 NM SSE of Adak Is, AK	48.0383 N	173.9169 W	*	*
46414	165 NM SE of Chirikof Is, AK	53.7255 N	152.4833 W	*	*
46416	442 NM West of Vancouver, BC, Canada	49.9007 N	134.4055 W	*	*
46419	300 NM WNW of Seattle, WA	48.8037 N	129.6196 W	*	*
51407	34 NM West of Kailua-Kona, HI	19.5583 N	156.5358 W	*	*
52401	610 NM ENE of Saipan	19.2395 N	155.7293 E	*	*

Alaska and Aleutian Islands Tide Gauges Table
Station number	Station name and location	Latitude [deg]	Longitude [deg]	Data [m]	Plot
9451600	Sitka, AK	57.0517	-135.3417	*	*
9452210	Juneau, AK	58.2989	-134.4106	*	*
9452400	Skagway, AK	59.4508	-135.3280	*	*
9452634	Elfin Cove, AK	58.1947	-136.3469	*	*
9453220	Yakutat Bay, AK	59.5485	-139.7334	*	*
9454050	Cordova, AK	60.5574	-145.7553	*	*
9455090	Seaward, AK	60.1200	-149.4267	*	*
9455500	Seldovia, AK	59.4405	-151.7199	*	*
9457292	Kodiak Is, AK	57.7303	-152.5139	*	*
9457526	Old Harbor, AK (NTWC)	57.199811	-153.307086	*	*
9459450	Sand Point, AK	55.3317	-160.5043	*	*
9459881	King Cove, AK	55.0599	-162.3261	*	*
9461380	Adak Island, AK	51.8633	-176.6320	*	*
9461710	Atka, AK	52.2320	-174.1726	*	*
9462450	Nikolski, AK	52.9406	-168.8713	*	*
9462620	Unalaska, AK	53.8792	-166.5403	*	*

US Pacific Islands Tide Gauges Table
Station number	Station name and location	Latitude [deg]	Longitude [deg]	Data [m]	Plot
1612480	Mokuoloe, Hi	21.4331	-157.7900	*	*
1615680	Kahului Harbor, Hi	21.4331	-156.4767	*	*
1617760	Hilo Bay, Hi	19.7303	-155.05580	*	*

US West Coast tide Gauges Table
Station number	Station name and location	Latitude [deg]	Longitude [deg]	Data [m]	Plot
9410170	San Diego, CA	32.7142	-117.17360	*	*
9410660	Los Angeles, CA	33.7199	-118.27290	*	*
9412110	Port San Luis, CA	35.1688	-120.75420	*	*
9413450	Monterey, CA	36.6051	-121.88930	*	*
9414290	San Francisco, CA	37.8063	-122.46590	*	*
9414750	Alameda, CA	37.7717	-122.30000	*	*
9414863	Richmond, CA	37.9230	-122.40960	*	*
9416841	Arena Cove, CA	38.9146	-123.71110	*	*
9418767	Eureka, CA	40.7664	-124.21720	*	*
9419750	Crescent City, CA	41.7456	-124.18440	*	*
9431647	Port Orford, OR	42.7390	-124.49830	*	*
9432780	Charleston, OR	43.3333	-124.31670	*	*
9435380	Newport, OR	44.6254	-124.04490	*	*
9437540	Garibaldi, OR	45.5545	-123.9189	*	*
9440581	Cape Disappointment, WA	46.2811	-124.04610	*	*
9440910	Toke Point, WA	46.7075	-123.96650	*	*
9441102	Westport, WA	46.9043	-124.10510	*	*
9442396	La Push, WA	47.9133	-124.63700	*	*
9443090	Neah Bay, WA	48.3703	-124.60190	*	*
9444090	Port Angeles, WA	48.1247	-123.44110	*	*
9444900	Port Townsend, WA	48.0963	-122.75950	*	*