15°C
Porth, Newquay, Cornwall. UK
Updated:  19/04/2026 12:00 
 


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UK Extremes South West Extremes


Past 24 hours
Updated
19 Apr 2026 00:00
 
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Highest Temp
18.8 °C at
Frittenden 16.7 °C at
Hurn
 
Lowest Temp
1.5 °C at
Exeter Airport No 2 1.5 °C at
Exeter Airport No 2
 
Precipitation
21.6 mm at
Achnagart 0.6 mm at
North Wyke
 
Sunniest
11.8 hours at
Yeovilton 11.8 hours at
Yeovilton
 
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Volcano Alerts and Activity Reports

Provided by usgs.gov Recent Volcano Observatory Activity Reports
Recent Volcano Observatory Activity Reports

Recent Volcano Updates from the U.S. Geological Survey Volcano Hazards Program

April 19th, 2026 07:13:09 EDT -0400 HVO Kilauea YELLOW/ADVISORY - Kīlauea summit eruption in Halemaʻumaʻu is paused. Forecasting suggests lava fountaining episode 45 will occur between Monday 4/20 and Saturday 4/25.
Apr 18, 2026 18:48 - Overview:The summit eruption of Kīlauea in Halemaʻumaʻu is paused. Overall summit region inflation has continued since the end of episode 44 on April 9. In the past 24 hours, the summit region inflated for most of the time, with a switch to slow delfation early this morning. Strong and continuous glow, with frequent flames, have been visible at the south vent over the past day. Forecast models suggest that lava fountaining episode 45 will occur sometime between Monday, April 20 and Saturday, April 25.No significant activity has been noted along Kīlauea’s East Rift ...
April 19th, 2026 07:13:09 EDT -0400 AVO Great Sitkin ORANGE/WATCH - Slow eruption of lava within the summit crater continues.
Apr 18, 2026 18:23 - Slow lava effusion continues within the Great Sitkin summit crater. Over the past day, seismic data recorded frequent rockfalls from the growing lava dome. Web camera and satellite views were cloudy. The current lava eruption began in July 2021 and, since then, has filled most of the summit crater and advanced into valleys below. There have been no explosions at Great Sitkin Volcano since an event in May 2021. The volcano is monitored using local seismic and infrasound sensors, satellite data, webcams, and regional infrasound and lightning networks.
April 19th, 2026 07:13:09 EDT -0400 AVO Shishaldin YELLOW/ADVISORY - Low-level unrest continues, with infrasound, and tremor observed. Sulfur dioxide plume observed in satellite data.
Apr 18, 2026 18:23 - Unrest persists at Shishaldin Volcano, with seismic and infrasound activity remaining elevated over the past day. A strong sulfur dioxide plume was observed in satellite data. with the degassing plume visible in satellite and web camera views when weather conditions were clear. Local seismic and infrasound sensors, web cameras, and a geodetic network are used to monitor Shishaldin Volcano. In addition to the local monitoring network, AVO uses nearby geophysical networks, regional infrasound and lightning data, and satellite images to detect eruptions.
April 19th, 2026 07:13:09 EDT -0400 CVO Cascade Range GREEN/NORMAL - All volcanoes are at normal levels.
Apr 17, 2026 21:34 - Activity Update: All volcanoes in the Cascade Range of Oregon and Washington are at normal background activity levels. These include Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams in Washington State and Mount Hood, Mount Jefferson, Three Sisters, Newberry, and Crater Lake in Oregon.Past Week Observations: A few small earthquakes were detected during the past week at Mount St. Helens and Mount Rainier. All monitoring data are consistent with background activity levels in the Cascade Range.
April 19th, 2026 07:13:09 EDT -0400 NMI Ahyi Seamount UNASSIGNED/UNASSIGNED - Plume of discolored water observed in satellite image this week.
Apr 16, 2026 22:02 - High-resolution satellite imagery revealed a point source plume of discolored water near Ahyi Seamount on April 10 and a diffuse plume on April 13. No signs of volcanic activity or unrest were detected in data from remote underwater pressure sensors, nor were there any other indicators suggesting significant unrest. The last time a similar plume was visible in satellite imagery was on April 8, 2026; however, persistent cloud cover and limited availability of high-quality satellite images have made it challenging to monitor such occurrences consistently.There are no local ...
April 19th, 2026 07:13:09 EDT -0400 CALVO GREEN/NORMAL - CA volcanoes were at normal background levels of seismicity and deformation during the past week.
Apr 14, 2026 17:39 - Monitored CALIFORNIA VOLCANOESCurrent Volcano Alert Level: all NORMALCurrent Aviation Color Code: all GREENActivity Update: All volcanoes monitored by CalVO show normal background earthquake activity and deformation. Monitored volcanoes include Mount Shasta, Medicine Lake Volcano, Lassen Volcanic Center, Clear Lake Volcanic Field, Long Valley Volcanic Region, Coso Volcanic Field, Ubehebe Craters, and Salton Buttes. Past Week Observations for April 06 (0000h PDT) to April 12 (2359h PDT):Typical seismicity was recorded at The Geysers geothermal field south of the Clear Lake ...
April 19th, 2026 07:13:09 EDT -0400 AVO Atka volcanic complex GREEN/NORMAL - Decreased seismicity and gas detections.
Apr 13, 2026 23:47 - Seismic activity, sulfur dioxide emissions, and thermal anomalies at Korovin Volcano (located within the Atka Volcanic Complex) have declined over the past couple weeks and are now at background levels. The Aviation Color Code and the Alert Level for the Atka Volcanic Complex are being lowered to GREEN/NORMAL. Small explosive events can occur at Korovin Volcano without significant precursory unrest. Fallout of ash from such events is unlikely to extend beyond the upper flanks of the volcano.
April 19th, 2026 07:13:09 EDT -0400 HVO Ofu-Olosega GREEN/NORMAL - No activity of concern for Ofu-Olosega.
Apr 2, 2026 18:49 - No significant activity was detected at Ofu-Olosega volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano.
April 19th, 2026 07:13:09 EDT -0400 HVO Ta'u Island GREEN/NORMAL - No activity of concern for Taʻū Island
Apr 2, 2026 18:49 - No significant activity was detected at Taʻū volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano. Local residents reported a landslide occurring on March 26, 2026 SST, between Ta‘ū and Fiti‘uta, but the event is not readily visible on the local monitoring station data. A Global Positioning System (GPS) instrument on Taʻū Island recorded no significant deformation.The FAGA broadband seismometer located on eastern Taʻū Island is currently out of service. ...
April 19th, 2026 07:13:09 EDT -0400 HVO Tutuila Island GREEN/NORMAL - No activity of concern for Tutuila Island
Apr 2, 2026 18:49 - No significant activity was detected at Tutuila volcano during the past month. The USGS National Earthquake Information Center reported no earthquakes of magnitude 2.5 or greater in the vicinity of the volcano.
April 19th, 2026 07:13:09 EDT -0400 HVO Mauna Loa GREEN/NORMAL - Mauna Loa earthquake counts slightly decreased in March, and inflationary ground deformation continued.
Apr 2, 2026 18:36 - Mauna Loa had decrease in seismic activity compared to the previous month, with clustering of events under Mokuʻāweoweo and the upper Southwest Rift Zone still present. A total of 86 earthquakes were detected beneath Mauna Loa's summit region in the February reporting period, while the prior month had 116 earthquakes. Data from Global Positioning System (GPS) instruments on Mauna Loa show variable rates of inflation at the summit over the past six months. This is associated with refilling of the summit reservoir system following the 2022 eruption.Gas and temperature ...
April 19th, 2026 07:13:09 EDT -0400 HVO Kama'ehuakanaloa UNASSIGNED/UNASSIGNED - No activity of concern for Kamaʻehuakanaloa.
Apr 2, 2026 18:36 - No significant activity was detected at Kamaʻehuakanaloa (formerly Lōʻihi Seamount) during the past month. Seismic activity remained low, and was representative of background activity levels at the volcano; all earthquakes were of small magnitudes.
April 19th, 2026 07:13:09 EDT -0400 HVO Hualalai GREEN/NORMAL - No activity of concern for Hualālai.
Apr 2, 2026 18:36 - No significant activity was detected at Hualālai volcano during the past month. Seismic activity remained low, and was representative of background activity levels at the volcano. The continuously recording Global Positioning System (GPS) instrument on Hualālai recorded no significant deformation through the first half of March, and went offline on March 15. HVO field engineers will service the station to get it back online.
April 19th, 2026 07:13:09 EDT -0400 HVO Haleakala GREEN/NORMAL - No activity of concern for Haleakalā.
Apr 2, 2026 18:36 - No significant activity was detected at Haleakalā volcano during the past month. HVO seismometers recorded one earthquake, under the onshore tip of the Southwest Rift Zone. The continuously recording Global Positioning System (GPS) instrument on Haleakalā recorded no significant deformation in the past month.
April 19th, 2026 07:13:09 EDT -0400 HVO Mauna Kea GREEN/NORMAL - No activity of concern for Mauna Kea.
Apr 2, 2026 18:36 - Mauna Kea seismic activity was elevated compared to the previous month with a swarm of earthquakes clustered about 12 miles (20 km) north-northeast of Mauna Kea summit—although the earthquakes are attributed to the underlying and inactive Kohala volcano. More details are available in the Information Statement issued on this swarm, available here: https://volcanoes.usgs.gov/hans-public/notice/DOI-USGS-HVO-2026-03-27T20:03:46+00:00. Continuous GPS instruments on Mauna Kea volcano did not record significant changes in ground deformation trends through March 2026.

 

Volcano Alert Levels
NORMAL
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
ADVISORY
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
WATCH
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway but poses limited hazards.
WARNING
Hazardous eruption is imminent, underway, or suspected.
UNASSIGNED

 

Aviation Alert Color Codes ICAO
GREEN
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
YELLOW
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
RED
Eruption is imminent with significant emission of volcanic ash into the atmosphere likely OR eruption is underway or suspected with significant emission of volcanic ash into the atmosphere [ash-plume height specified, if possible].