Type a town. You get the hour the storm is due, how long it lasts, and whether it will slide past instead.
This forecast comes from a weather model, not from radar or lightning detection. It is indicative and experimental, not an official warning. Official warnings are issued by national meteorological services. In an emergency call 112. Data source: Open-Meteo (DWD ICON model).
Oslo: no storm
No storm signal for this place or its surroundings in the next 12 hours. The storm moves from the north-west towards the south-east at 9 km/h.
Chance of a storm over the town
0%
Storm signal strength
1/100noneover the town 1nearby 3
Direction of travel
from the north-west towards the south-east
Moving at
9 km/h
Next 12 hours over: Oslo
019
020
021
022
023
000
001
002
003
004
005
006
now 19:47
Each bar is one full hour of local time (Europe/Oslo). Bar height = strength of the storm signal.
Press and hold on the map (right-click on a computer) to calculate the storm for that exact spot. The animated arrow shows where the storm comes from and where it is heading.
15°
Partly cloudy
Oslo · Now
0,0 mm
Precipitation
9 km/h
Wind
69%
Humidity
1025 hPa
Pressure
Data: Open-Meteo · refreshed every 15 minutes
Windy.com · radar
Weather radar — live view
This is a real meteorological radar, not our model forecast — it shows what is actually raining and striking RIGHT NOW, minute by minute, up to 2 hours back. By default you see rainfall together with real-time lightning strikes (one combined Windy layer) — switch to wind or warnings for more.
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This forecast comes from a weather model, not from radar or lightning detection. It is indicative and experimental, not an official warning. Official warnings are issued by national meteorological services. In an emergency call 112. Data source: Open-Meteo (DWD ICON model).
How to read the results — 7 questions
What does "the storm passes overhead" mean?
The model predicts a real storm signal (rain plus lightning) directly over the chosen point, not just nearby. That is the highest confidence level this tool gives — but it is still a forecast, not a radar reading.
What does "the storm passes by" mean?
There is a strong storm signal somewhere within 100 km, but not directly over the chosen town. The radar below shows which direction and how far — that answers "will it hit me or pass to the side".
What does the percentage chance mean?
It combines the model's signal strength with the hourly precipitation probability. Under 20% — calm. 30–45% — a real chance. Above 45% — a strong signal worth tracking.
How do I read the 15-minute bar chart?
Each bar is 15 minutes. Height and colour show signal strength at that moment: grey/calm, blue/weak, orange/medium, red/strong. A white outline marks the predicted start time.
How do I read the circular radar?
Two rings (30 km and 100 km) split into 16 directions, with the town at the centre. Wedge colour shows signal strength from that direction and distance — the same data as the bar chart, laid out in space instead of time.
What does the direction arrow mean?
It points to where the storm cell is coming from — up means "from the north", right means "from the east", and so on. Calculated from wind at roughly 3 km altitude, where storms actually travel.
Is this an official warning?
No. This is a weather-model forecast (ICON-D2/ICON-EU), useful for planning, but it does not replace warnings from national meteorological services. In an emergency, the official bulletin and 112 matter, not this site.
How to stay safe — quick version
In the open: get off a field, beach, or hilltop. Lightning strikes the highest point around.
In a car: stay inside with the windows closed — the body acts as a Faraday cage.
Under a tree: don't. It's a common cause of injury — a discharge can jump from the tree to someone standing nearby.
At home: unplug sensitive electronics if the building has no lightning protection — a surge can jump through the line.
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