Decreasing N winds tonight. Fair in S- and SW-Iceland, but cloudy elsewhere and rain or sleet in the NE-part.
Light N-ly winds tomorrow. Rain in SE-Iceland, mainly in the afternoon and scattered wintry showers in the N-part, but partly cloudy or fair in SW-Iceland.
Temperature 2 to 10 deg. C. during the day, mildest on the S-coast.
Forecast made 29.09.2016 22:43
Strong wind gusts are expected in the SE-part today.
Prepared by the meteorologist on duty 29.09.2016 22:43
|3.2||30 Sep 02:43:07||Checked||5.2 km N of Hábunga|
|3.0||29 Sep 16:28:10||Checked||4.9 km N of Hábunga|
|2.9||28 Sep 07:57:00||Checked||14.0 km NNE of Grímsey|
More than 100 earthquakes were detected in the Katla volcano yesterday the 29th of September, the activity is still ongoing. This is the highest daily rate this year. The largest earthquake reached magnitude M3.0 (at 16:28). All of the earthquakes are very shallow.
See: Earthquakes last 14 days,
Earthquakes since 2011
Written by a specialist at 30 Sep 00:38 GMT
Around 530 earthquakes were detected last week by the national seismic network of the Icelandic Meteorological Office. An earthquake swarm that started last week in Hellisheiði continued this week. The largest quake of the sequence which was also the largest quake of the week was a magnitude 3,0 on 19 September at hrs 18:41. In total, around 230 earthquakes were measured in the swarm. 12 earthquakes over magnitude 2,0 occurred this week, four in Mýrdalsjökull, one in Grimsfjall, three in Bárðarbunga and three in Hellisheiði. An earthquake of magnitude 2,9 was detected close to Hveragerði on september 25th. It was felt in the town of Hveragerði. More
|Jökulsá á Fjöllum||Grímsstaðir||182.6 m³/s||3.5 °C|
|Ölfusá||Selfoss||282.9 m³/s||5.5 °C|
Generally stable springsnow conditions in the mountains. Avalanche bulletins will not be released any more this winter unless special conditions develop in the mountains.
Written by a specialist at 27 May 17:45 GMT
The avalanche forecast is written for large areas and doesn't necessarily represent avalanche danger in urban areas.
In June 2016 a weather station was established on the upper reaches of Dyngjujökull, about 10 km north of the Grimsvötn caldera, at 1689 m above sea level.
A seismometer has been in operation by the IMO at the site since the
autumn of 2014 and the main purpose of the new weather station is to monitor conditions at this important location in the network, amongst the
volcanoes of Vatnajökull.
Heavy rainfall in the East fjords and heavy rain is forecast for the North. River levels are elevated due to rain, with the possibility of mud flows.
Heavy rain and discharge is forecast for Northern Iceland. Flash flows cannot be excluded.Checking on drainage near buildings is encouraged. Read more
8.9.2016: The level of Skaftá river has risen significantly. This suggests that a glacial outburst flood is in progress.
Hydrogen sulphide is released from the floodwater as it drains from the ice-cap and H2S is particularly potent at the ice margin (poisonous levels). Travellers must stay away from the edges of Skaftárjökull and Tungnaárjökull while the flood occurs.
Crevasses will develop rapidly around the ice cauldron, so travellers on Vatnajökull should stay away from the region.Read more
Since mid-June, there has been heightened earthquake activity in the Katla caldera. Summertime increases in caldera seismicity are an almost annual occurrence at Katla, often associated with the drainage of geothermal meltwater in the form of minor floods in glacial rivers from Mýrdalsjökull
These are not necessarily precursors to an imminent volcanic eruption.
Similar unrest has taken place at Katla several times since the 1950s
without culminating in an explosive eruption.
Travellers are urged to not spend time close to Múlakvísl, especially the upper reaches of the river, as measurements near to the source show unhealthy levels of hydrogen sulphide, signifying high concentrations of geothermal fluids.Read more
The 47th Nordic Seismology Seminar will be held in Reykjavík, 11-13 October 2016.
The meeting will commence on Tuesday in the early afternoon and last until Thursday evening.
Those who are interested in attending, are encouraged to apply for participation.
The eruption in Holuhraun in central Iceland in 2014 - 2015 was the largest seen in Iceland since 1783. The ice-filled caldera of Bárðarbunga central volcano collapsed during the eruption as 1.9 km³ of magma flowed laterally from a magma reservoir under the volcano. Eruptions of this type are not common. This caldera collapse is the first where it has been possible to carry out detailed observations during the events. Unique data was obtained that threw new light on the mechanism of caldera collapses and their interaction with the associated eruptions. A large team of scientists has analyzed the data from Bárðarbunga and published the results in the journal Science.Read more
Jökulhlaups (glacier outburst floods) are more common in Iceland than elsewhere in the world because of the interaction of volcanoes with glaciers. The greatest jökulhlaups from the subglacial Katla volcano are among the largest floods that humans have witnessed.Read more