Abusive loads on thredds.met.no
Update - As you have noticed by the number of messages about outages for thredds.met.no, we are still struggling with periods of overload.
From approx 12 CEST today we have introduced throttling on some of our most used datasets to reduce the load on our services.
Throttling means that the nnumber of requests per second must be below a threshold, otherwise you get a "429 Too many requests" error message in your download script. If you experience this, please try one or more of the following:
- Only sequential downloads, remove all parallell jobs. Wait until you get an answer befor you send the next request.
- Reduce the number of downloads by asking for larger downloads and do the extraction locally. Example: Instead of looping over the "four neighbour cells" when you want a grid extract, download all 4 gridd cells at once.
Oct 19, 2026 - 16:01 CEST
Monitoring - Over the past days we have experienced high and abusive loads on the public service thredds.met.no
This has resulted in a large number of "thredds.met.no - https down" messages on status.met.no.
We have been in contact with one organization so that the load is now reduced, but we will continue to monitor the situation and may have to block some of the users if this continues.
Please note that our priority users with an Service Level Agreement have not been affected by the outages.

Also note that in an unrelated incidence in our production system several models failed to produce results last night,and some forecasts are delayed. Our staff is working to restore normal production.

Thanks for your patience.
Oct 01, 2026 - 10:02 CEST

About This Site

This status page contains the operational status of selected weather models and external interfaces from MET Norway.

frost.met.no Operational
https://frost.met.no Operational
thredds.met.no Operational
https://thredds.met.no Operational
MEPS deterministic Operational
MEPS deterministic post processed Operational
MEPS ensemble Operational
MET Arome Arctic deterministic Operational
data.csw.met.no Operational
https://data.csw.met.no/ Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance

Scheduled Maintenance

MET AICE v1 stops production on Nov. 25. and is replaced by AICE v2 Nov 25, 2026 08:00-08:01 CET

This concerns the dataset found under https://thredds.met.no/thredds/catalog/fou-hi/aice.html

Here are the main changes compared to MET-AICE v1:
- MET-AICE v1 file names are : "AICE_forecasts_YYYYMMDDT000000Z.nc", while MET-AICE v2 file names are: "METAICE_v2_YYYYMMDDT120000Z.nc"
- MET-AICE v1 provides only sea ice concentration forecasts at 5 km resolution with the variable "SIC" ranging from 0 to 100 %. MET-AICE v2 provides sea ice concentration (variable "ice_conc" ranging from 0 to 1) and drift (variables "dx" and "dy" in meters per day) forecasts at 2.5 km resolution.
- MET-AICE v2 has a slightly larger geographical domain than MET-AICE v1 towards the Russian coast.
- MET-AICE v1 was trained only on passive microwave observations of sea ice concentration, while MET-AICE v2 was trained on a combination of passive microwave and SAR observations.
- MET-AICE v1 is currently produced around 09:30 UTC, while MET-AICE v2 is produced just after 05:00 UTC.
- MET-AICE v1 does not provide the initial conditions for the sea ice concentration, while the initial sea ice concentration field (observations) is provided in MET-AICE v2.
Posted on Nov 13, 2026 - 15:37 CET

Nov 14, 2026

No incidents reported today.

Nov 13, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 13, 07:05 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 13, 07:04 CET

Nov 12, 2026

Network maintenance affecting data access on thredds.met.no ("storeB")
Completed - The scheduled maintenance has been completed.
Nov 12, 10:00 CET
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 11, 10:00 CET
Scheduled - A network maintenance is scheduled on Nov. 11. between 10:00 and 14:00 CET. This will cause many datasets on thredds.met.no to be unavailable during the maintenance and until the next day, Nov. 12. It mostly affects "Users", "Projects" and long timeseries in archives, while our weather/ocean forecasts shall remain online.
In particular the long dataseries under "Weather forecasts" ("MEPS Archive/", "AROME Arctic archive/", "MET post-processed products/ Archive + Long term consistent", etc.) will remain unavailable during the maintenance. A few long timeseries may be available in a shortened version (eg. only a week or month long).
Nov 10, 13:42 CET

Nov 11, 2026

Nov 10, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 10, 12:11 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 10, 12:10 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 10, 04:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 10, 04:01 CET

Nov 9, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 9, 18:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 9, 18:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 9, 11:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 9, 11:01 CET

Nov 8, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 8, 19:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 8, 19:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 8, 18:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 8, 18:01 CET

Nov 7, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 7, 20:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 7, 20:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 7, 18:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 7, 18:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 7, 11:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 7, 11:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 7, 04:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 7, 04:01 CET

Nov 6, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 6, 19:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 6, 19:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 6, 18:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 6, 18:01 CET
Arome Arctic deterministic production
Resolved - Our monitoring system has detected that this incident has been resolved.
Nov 6, 13:52 CET
Investigating - Arome Arctic deterministic results from model run based on analysis of 2026-11-06 09 UTC is not yet published. Normally we would expect it by now. Please use an earlier forecast.
Nov 6, 13:47 CET

Nov 5, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 5, 11:03 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 5, 11:01 CET
data.csw.met.no - https down
Resolved - This incident has been resolved.
Nov 5, 09:57 CET
Investigating - Our monitoring system has lost contact with data.csw.met.no through https and you may also have problems connecting to the service. We apologize for any inconvenience due to the unavailability of the service.
Nov 5, 09:56 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 5, 00:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 5, 00:01 CET

Nov 4, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 4, 09:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 4, 09:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 4, 08:32 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 4, 08:31 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 4, 01:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 4, 01:01 CET

Nov 3, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 3, 19:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 3, 19:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 3, 18:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 3, 18:00 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 3, 12:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 3, 12:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 3, 10:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 3, 10:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 3, 04:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 3, 04:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 3, 01:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 3, 01:01 CET

Nov 2, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 2, 21:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 2, 21:01 CET
thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 2, 11:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 2, 11:01 CET

Nov 1, 2026

thredds.met.no - https down
Resolved - This incident has been resolved.
Nov 1, 18:02 CET
Investigating - Our monitoring system has lost contact with thredds.met.no through https and you may also have problems connecting to the service. This seems like a real incident, and we are contacting our technical engineers in order to assess the situation and restore normal operations. We apologize for any inconvenience due to the unavailability of the service.
Nov 1, 18:01 CET

Oct 31, 2026

No incidents reported.

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