KARYMSKY Kamchatka Peninsula, Russia 54.05°N, 159.43°E; summit elev. 1,536 m (5 km)
during 13-20 May seismic activity and height of ash explosions increased in comparison to the previous week, ash-and-gas plumes rising to ~5 km and fresh ash deposits on the W and E sectors of the volcano

SHIVELUCH Kamchatka Peninsula, Russia 56.653°N, 161.360°E; summit elev. 3,283 m (4.5 km)
no explosive events recorded during 13-20 May, however, gas-and-steam plumes as high as 4.5 km
ST. HELENS Washington, USA 46.20°N, 122.18°W; summit elev. 2,549 m (low)
during 18-24 May growth of the new lava dome continuing, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash, ground deformation similar to those of the previous few weeks
 
 
Equatorial Ash and Gas Eruptions at less than 23°N or S
 
ANATAHAN Mariana Islands, central Pacific Ocean 16.35°N, 145.67°E; summit elev. 788 m (3 km)
during 18-20 May volcanic tremor increased, peaking on the 20th, satellite imagery showing ash propagated to a maximum height of 3 km
CANLAON Philippines 10.41°N, 123.13°E; summit elev. 2,435 m (3.4 km)
phreatic activity during 18-23 May with ash-and-steam plumes rising to ~3.4 km, the sulfur-dioxide flux on 22 May ~2,080 metric tons per day, much higher than the normal flux of 500 metric tons per day
COLIMA western México 19.514°N,103.62°W; summit elev. ~3,850 m (9.6 km)
largest eruption since 1999 on 24 May at 0010, the plume rising to ~9.6 km and drifting W; pyroclastic flows traveling 4-5 km, mainly down San Antonio (SSW) and Monte Grande (SSE) ravines, ash plumes above the pyroclastic flow drifting E
DUKONO Halmahera, Indonesia 1.70°N, 127.87°E; summit elev. 1,185 m (low)
satellite data showing thin ash plumes on 21 May, height not reported
FUEGO Guatemala 14.47°N, 90.88°W; summit elev. 3,763 m (low)
during 17-20 May lava flows down flanks, extending ~400 m W and ~500 m SW of the summit with short avalanches from the lava-flow fronts, ash and incandescent volcanic material to low altitudes
GALERAS Colombia 1.22°N, 77.37°W; summit elev. 4,276 m (0)
during 16-23 May an increase in earthquakes associated with fracturing within the volcano during the night of 21 May to the morning of 22 May, gas emissions slightly decreased on 17 and 20 May in comparison to 29 April and 2 May, and slightly increased around 23 May, deformation recorded at the volcano's summit, no ash emissions
KILAUEA Hawaii, USA 19.43°N, 155.29°W; summit elev. 1,222 m (0)
on 18 May lava entering the sea at three areas, surface lava flows visible on the coastal plain and on the Pulama pali fault scarp
PACAYA southern Guatemala 14.38°N, 90.60°W; summit elev. 2,552 m (3.1 km)
incandescent lava ejected ~50 m from crater on 17 May and an intra-crater lava flow ~300 m from the SW base of the central cone, on 20 May a thin plume to ~3.1 km
POPOCATEPETL Mexico 19.01°N, 098.37°W; summit elev. 5,426 m (9.1 km?)
pilot report of ash at 9.1 km (?) at 16:35 on 26 May, cloud moving SE, ash from Colima no longer visible, height of ash listed as "FL30" above volcano summit, no hot spot visible (this pieced together from VAAC reports)
REVENTADOR Ecuador 0.078°S, 77.656°W, summit elev. 3,562 m (4.9 km)
an eruption on 19 May around 1400 producing a NW-drifting ash plume to 3.7-4.9 km, ash not visible on satellite imagery due to meteorological clouds
SANTA MARÍA Guatemala 14.756°N 91.552°W; summit elev. 3,772 (4.8 km)
constant avalanches from lava-flow fronts on the SW flank of Santiaguito lava-dome complex on 17 May, explosions during 17-20 May producing ash clouds to a height of ~4.8 km, ash falling 7-10 km from Caliente Dome
SEMERU Java, Indonesia 8.11°S, 112.92°E; summit elev. 3,676 m (4.6 km)
satellite imagery on 21 May showing a thin plume at a height of ~4.6 km and extending to the S and later SSE
SOUFRIÈRE HILLS Montserrat, West Indies 16.72°N, 62.18°W; summit elev. 1,052 m (low)
during 13-20 May steam venting continuing that began on the NW side of the crater on 15 April; the daily recorded sulfur-dioxide flux varied from a low of 222 metric tons per day on 16 May to a maximum of 363 on 14 May
TUNGURAHUA Ecuador 1.47°S, 78.44°W; summit elev. 5,023 m (5.5 km)
volcanic at relatively low levels during 18-23 May, with mainly emissions of steam and gas, on 19 May around 1700 an ash-and-steam plume to a height of 5.5 km that drifted N
ULAWUN New Britain Island, Papua New Guinea 5.04°S, 151.34°E; summit elev. 2,334 m (low)
satellite imagery on 19 May showing a small plume at an unknown height extending W
 
[i]All ash elevations are in km above sea level (a.s.l.) and times are converted to UTC.[/i]
 
EARTH
FIVE Index of Global earthquakes of 5.0 magnitude or greater

DATE-(UTC)-TIME LAT LON DEP MAG Q COMMENTS 
yy/mm/dd hh:mm:ss deg. deg. km 
READ UP for latest report. 
Sans Sumatra and Today: 5M quakes - 13, 6M quakes -2
05/05/23 19:58:076.25N117.78E10.0 5.0SABAH, MALAYSIA
05/05/21 16:29:2230.71N138.51E390.9 5.0IZU ISLANDS, JAPAN REGION
05/05/21 05:11:333.28S80.82W25.5 6.1PERU-ECUADOR BORDER REGION
05/05/20 16:32:2010.75S164.49E29.0 5.0SANTA CRUZ ISLANDS REGION
05/05/20 12:40:4224.46S178.81E565.1 6.0SOUTH OF FIJI ISLANDS
05/05/20 11:15:0148.74N154.92E57.3 5.1KURIL ISLANDS
05/05/20 07:57:5758.72S25.23W10.0 5.1SOUTH SANDWICH ISLANDS REGION
05/05/19 14:17:276.42N125.75E141.1 5.4MINDANAO, PHILIPPINES
05/05/19 07:11:0114.70N91.91W99.0 5.0GUATEMALA
05/05/19 01:14:2835.43N140.81E44.9 5.3NEAR THE EAST COAST OF HONSHU, JAPAN
05/05/19 01:12:2960.01N152.68W95.5 5.5SOUTHERN ALASKA
05/05/19 14:17:276.43N125.75E134.8 5.3MINDANAO, PHILIPPINES
05/05/19 07:11:0014.70N91.93W80.0 5.1GUATEMALA
05/05/19 01:14:2635.39N140.83E22.6 5.3NEAR EAST COAST OF HONSHU, JAPAN
05/05/19 01:12:2960.02N152.68W95.5 5.2SOUTHERN ALASKA
Indonesian Quakes, by region with top to north, latest quake on top
Simeulue 5M quakes - 1
05/05/25 14:42:142.85N95.54E26.9 5.1SIMEULUE, INDONESIA
North Sumatra 5M quakes - 3 
05/05/26 10:08:275.68N93.23E30.0 5.4OFF W COAST OF NORTHERN SUMATRA
05/05/24 09:37:532.60N94.44E10.0 5.2OFF W COAST OF NORTHERN SUMATRA
05/05/21 23:01:135.39N94.75E30.0 5.6NORTHERN SUMATRA, INDONESIA
Nias Island 5M quakes - 4 6M quakes - 1 
05/05/23 05:48:160.85N97.36E24.7 5.2NIAS REGION, INDONESIA
05/05/21 23:09:061.30N97.07E23.2 5.1NIAS REGION, INDONESIA
05/05/21 23:07:551.21N97.18E23.0 5.0NIAS REGION, INDONESIA
05/05/19 20:44:070.37N97.24E17.9 5.2NIAS REGION, INDONESIA
05/05/19 01:54:521.98N96.95E30.0 6.9NIAS REGION, INDONESIA
 
United States And U.S. Territorial Quakes this past week 
with quakes possibly felt from nearby countries: 
05/05/26 01:20:3043.52N126.97W10.0 3.4OFF COAST OF OREGON
05/05/23 19:59:5835.67N121.09W9.0 4.1CENTRAL CALIFORNIA
05/05/23 15:10:3751.12N178.50E34.9 4.8RAT ISLANDS, ALEUTIAN ISLANDS
05/05/22 10:35:2740.43N125.50W4.9 3.4OFFSHORE NORTHERN CALIFORNIA
05/05/21 10:22:5439.40N120.15W6.1 2.8NORTHERN CALIFORNIA
05/05/21 08:16:3866.02N148.47W13.0 4.4NORTHERN ALASKA
05/05/21 00:39:3233.22N116.21W14.4 4.1SOUTHERN CALIFORNIA
05/05/20 22:01:5154.82N159.90W15.0 4.0SOUTH OF ALASKA
05/05/20 15:52:0721.67N157.59W7.1 4.1OAHU REGION, HAWAII
05/05/20 06:12:4438.23N122.17W14.0 2.9NORTHERN CALIFORNIA
05/05/19 21:46:2712.18N144.09E44.2 4.5GUAM REGION
05/05/19 14:19:4536.02N91.16W11.2 2.5ARKANSAS
05/05/19 06:40:2832.16N115.86W6.0 3.0BAJA CALIFORNIA, MEXICO
05/05/19 01:12:2960.01N152.68W95.5 5.5SOUTHERN ALASKA
05/05/19 01:02:4334.32N98.07W5.0 2.5OKLAHOMA
05/05/19 01:12:2960.02N152.68W95.5 5.2SOUTHERN ALASKA
 
SUN
Sunspot numbers, daily for the past week:
5/18 19 20 21 22 23 24 25 
   46 34 22 37 42 36 40 45 
Planetary daily geomagnetic A Index/with prior consecutive 3 hr Kp's 
5/18 13/ 3 3 4 3 4 3 2 2
5/19 11/ 2 3 3 2 2 2 3 3
5/20 30/ 3 6 6 4 4 3 2 3
5/21 21/ 3 4 4 4 3 3 3 3
5/22 14/ 4 2 3 4 3 2 3 2
5/23 7/  2 1 1 1 3 3 2 1
5/24 5/  1 1 1 1 1 1 2 2
5/25 6/  2 1 2 1 1 2 2 1