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Weather forecast
Weather forecast for the next 24 hours
Becoming NW 10-18 m/s in E-Iceland in the evening, but light winds elsewhere. Mostly dry, but snowshowers in the NE- and E-part. Frost widely 0 to 7 deg. C.
SE 5-13 m/s and snow tomorrow, first in SW- and W-Iceland. Sleet or rain in the SW part in the afternoon and temperature 0 to 6 deg. C.
Forecast made 27.11.2021 15:11
Forecaster's remarks
Chances are that freezing rain could form in the SW part until afternoon, with considerable ice on surface.
Prepared by the meteorologist on duty 27.11.2021 15:11
If the map and the text forecast differs, then the text forecast applies
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Maximum wind in Iceland today
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Maximum and minimum temperature in Iceland today
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Maximum precipitation in Iceland today
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Maximum wind in Iceland during the last hour
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Maximum and minimum temperature in Iceland during the last hour
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Maximum precipitation in Iceland during the last hour
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Preliminary results
Earthquakes
Earthquakes during last 48 hours. at 27 Nov 17:25 GMT
Biggest earthquakes during the last 48 hours
| Size | Time | Quality | Location |
|---|---|---|---|
| 3.9 | 26 Nov 23:07:48 | Checked | 392.3 km SSW of Eldeyjarboði |
| 3.5 | 26 Nov 03:17:42 | Checked | 0.8 km W of Vatnafjöll |
| 2.6 | 26 Nov 19:10:23 | Checked | 2.4 km SW of Vatnafjöll |
Specialist remark
Yesterday (Friday) at 03:17 an earthquake occurred by Vatnafjöll of magnitude 3.5. This is a part of aftershock activity following the M5.2 the 11.th of November.
Written by a specialist at 27 Nov 06:21 GMT
Week overview 15 November - 21 November
Around 980 earthquakes were detected by the IMO¿s SIL seismic network this week, more than the previous week when around 720 earthquakes were detected. Seven earthquakes of magnitude M3.0 or over were detected. The largest earthquake of the week was M3.9 at 13:21 on November 18th in Vatnafjöll, just south of Mt. Hekla. On November 20th, an earthquake of magnitude M3.3 was detected in Þrengslin, a small seismic swarm was detected in that area. Another seismic swarm was in Tjaldstæðagjá, northwest of Einiberjahól on the 21st of November, largest earthquake detected in that swarm was M3.5. More
Hydrology
Average flow and temperature last 24 hours
| River | Place | Flow | Water temperature |
|---|---|---|---|
| Norðurá | Stekkur | 26.5 m³/s | |
| Austari Jökulsá | Skatastaðir | ||
| Jökulsá á Fjöllum | Grímsstaðir | 84.7 m³/s | 17.6 °C |
| Eldvatn | Eystri-Ásar | 32.8 m³/s | |
| Ölfusá | Selfoss | 362.6 m³/s | -0.1 °C |
Remarks of a specialist
GPS measurements in Grímsvötn show that the ice-cap has started subsiding. This could be an indication that a Jökulhlaup is impending.
The GPS station in Grísmvötn show that the ice-cap has subsided about 1.5m for the past days. No remarkable changes have been observed in Gígjukvísl river. See news article
Examples are that volcanic eruption can occur in Grímsvötn after water is drained from there. It is believed that volcanic eruptions can occur after sudden pressure release due to reduced water level in the lake. The last time something similar happened was in 2004, 1934 and 1922.
Written by a specialist at 26 Nov 23:26 GMT
Avalanches
Avalanche bulletins for selected areas
The avalanche bulletin is at a regional scale. It does not necessarily represent avalanche danger in urban areas.
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News
Icesheet in Grímsvötn subsiding
The icescheet has continued to subside evenly throughout the night. IMO´s GPS instruments show that is has sunk about 25 cm since 10:00 yesterday. There are no signs of increased water level, electrical conductivity or gas in Gígjukvísl at this time.
Read more
Update on Fagradalsfjall
Since 18th of September no eruptive activity has
been observed at Fagradalsfjall, but there are still small quantities of gas
measured in the atmosphere. During the eruption a deflation signal was detected around Fagradalsfjall, most likely due to magma
withdrawal from a deep reservoir which was feeding the eruption.
Joining forces in weather forecasting and climate research
The National Weather Services of Denmark, Iceland, Ireland and The Netherlands are joining forces to jointly operate a new supercomputer and to bring significant advancements to short-term weather forecasting services.
Read more
The Civil protection crisis level lowered from alert to uncertainty phase
During the past month (18th September - 18th October) no lava flow from the crater has been detected at Fagradalsfjall volcano. Out gassing is still ongoing with very low concentrations of eruptive gases. Similarly, thermal anomalies continue to be detected at lower values and greater intervals between detection's.
Read more
“The small eruption” in Fagradalsfjall celebrates six months
Yesterday, 19th of September marks 6 months since the beginning of the eruption. The lava flow from this eruption is thought to be relatively small compared to other eruptions in Iceland. However, due to its location and easy access for scientists and the public it has had a bigger impact and made more challenges then other eruptions.
Read more
Flood from Skaftá
The flood in Skaftá is still ongoing but the discharge has lowered significantly.
The water level in Tungulækur, which is a groundwater stream from Eldhraun, continues to rise slightly, indicating that floodwater is still spreading through the lava. Gas pollution close to the edge of the Skaftá river remains a possibility.
Read moreShort articles
Arctic cooperation
The Icelandic Meteorological Office cooperates with many agencies in related fields. With ongoing environmental changes, long term time-series are becoming increasingly important. These include time series of weather-related factors, such as temperature, rainfall, air pressure and solar and cloud cover, time-series on hydrology, glaciology, sea-ice condition, earthquakes, floods, ice and sediment load in rivers. Such data from IMO is important, providing a benchmark for assessing ongoing changes in the Arctic region.
New publications and research
- Petersen, G. N. (2021). Trends in soil temperature in the Icelandic highlands from 1977 to 2019. International Journal of Climatology,1–12. doi.org/10.1002/joc.7366
- Shu Yang, Fengchao Peng,Sibylle von Löwis, Guðrún Nína Petersen & David Christian Finger (2021). Using Machine Learning Methods to Identify Particle Types from Doppler Lidar Measurements in Iceland. MDPI 13. doi.10.3390/rs13132433
- Hrafnhildur Hannesdóttir, Oddur Sigurðsson, Ragnar H. Þrastarson, Snævarr Guðmundsson, Joaquín M.C. Belart, Finnur Pálsson, Eyjólfur Magnússon, Skúli Víkingsson, Ingibjörg Kaldal & Tómas Jóhannesson (2020). A national glacier inventory and variations in glacier extent in Iceland from the Little Ice Age maximum to 2019. Jökull 70. (Abstract)