Danish National Severe Storms Research & Observations Project
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dnsrop.bsky.social
Danish National Severe Storms Research & Observations Project
@dnsrop.bsky.social
DNSROP is a project dedicated to the observation and study of adverse severe weather within Denmark, such as hail, tornadoes, so on.

@topscandinavia.bsky.social‬ for tornado outlooks.
Here are the stats:
Width: 1,01 km (widest in Danish history)
Path length: 3,14 km
Intensity: IF1
Occurrence: ~1935Z
November 29, 2025 at 10:06 AM
Now, What's to Come? (2/2)

By the turn of the year (2026), DNSROP will work to improve its effect on the science community and public outreach/visibility. And biggest of all: a budget.
September 8, 2025 at 10:39 PM
Now, What's to Come? (1/2)

As the season changes into autumn, and severe weather season comes to an end, DNSROP will be heading into a overwintering period. But, @topscandinavia.bsky.social will remain active, issuing tornado outlooks for any relevant days.
September 8, 2025 at 10:39 PM
Damaging Lightning

Damaging lightning was prevalent coast-to-coast in Denmark 2025, causing one death in/near Ornum. Additionally, lightning damaged a house and exploded a tree.
September 8, 2025 at 10:39 PM
Hail Activity

In strong contrast to 2024, 2025's season featured minimal hail activity, with the largest stones reaching 2,5 cm (~1 inch) in size on two occasions, namely June 1 and August 23. In 2024, by contrast, the largest stone reached ~10 cm, four times the size of 2025's largest.
September 8, 2025 at 10:39 PM
Tornado Activity (2/2)

...with a low-pressure system traversing in over Denmark, leading to very robust waterspout/landspout profiles for any cell that did develop.
September 8, 2025 at 10:39 PM
Tornado Activity (1/2)

With over 20 reports (21), the tornado count so far is hugging the upper-bound of DNSROP's forecast of 14-22, marking a significantly more active season than initially thought. This is in part due to a rather favorable end to July/start August...
September 8, 2025 at 10:39 PM
Technical difficulties, it seems.
May 24, 2025 at 2:31 PM
[ENGLISH]

CFS forecasts suggest the same from July to August this year. Using this, we can publish a rough estimate of the tornado count for 2025.

From May to September, the likely number of tornadoes in Denmark will be around 14-22 tornadoes (2004-2024 average of 14.5 tornadoes).
May 10, 2025 at 3:07 AM
[ENGLISH]

2024, 2022 and 2019 (etc.) were active storm-wise, but what did they have in common?

A quasi-stationary Icelandic low-pressure area, below-average precipitation and temperature anomalies over the North Sea, and higher precipitation and temperature anomalies over Denmark and Sweden.
May 10, 2025 at 3:07 AM
[ENGLISH]

Now that tornado season is starting in the US, what is the forecast like here in Denmark?

Here is a forecast from DNSROP.
May 10, 2025 at 3:07 AM
CFS-prognoser tyder på det samme fra juli til august i år. Ved hjælp af dette kan vi udgive et groft skøn over tornadotallet for 2025.

Fra maj til september vil det sandsynlige antal tornadoer i Danmark være omkring 14-22 tornadoer (2004-2024 gennemsnit på 14,5 tornadoer).
May 10, 2025 at 3:07 AM
2024, 2022 og 2019 (o.s.v.) var aktivt uvejrsmæssigt, men hvad havde de til fælles?

Et kvasi-stationær islandsk lavtryksområde, nedbør og temperaturafvigelser under gennemsnittet over Nordsøen og højere nedbørs- og temperaturafvigelser over Danmark og Sverige.
May 10, 2025 at 3:07 AM