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Country forecast

Geomagnetic storm forecast for Republic of South Africa

No storm Capital: Pretoria 304 citiesEstimate

The geomagnetic field over Republic of South Africa is quiet: Kp 0.7 now, with the 72-hour peak near Kp 3.0. Across the country the effective exposure runs from about 2.3 at the least exposed cities to 2.6 at the most exposed.

Planetary Kp now0.7NOAA SWPC, live
72-hour peak3.0next 72 hours
Magnetic latitudes-34.8–-24.1°span across listed cities
Effective at peak2.3–2.6least → most exposed · estimate

Republic of South Africa spans geomagnetic latitudes -34.8°–-24.1°, so the same planetary storm is felt differently across it — higher magnetic latitudes get noticeably more. Open a city page for storm timing in its local time, its aurora threshold and wellbeing guidance.

Data: NOAA SWPC · GFZ Potsdam

Deep forecast · 72 hours

Next 72 hours over Republic of South Africa

Planetary Kp by 3-hour windows — identical worldwide; the local feel scales with each city's latitude.

Deep forecast · 72 hours
Kp by 3-hour windows · with uncertainty
CalmActiveStormSevereUncertainty

Forecast peak Kp 3 around Jul 18, 03 AM.

01 · Week ahead

Seven-day geomagnetic forecast

Official NOAA Kp forecast with a general wellbeing-risk estimate for weather-sensitive people.

Today 17 Jul
2.0
No storm
Quiet
General risk14%
Sa 18 Jul
3.0
Unsettled field
Quiet
General risk23%
Su 19 Jul
2.0
No storm
Quiet
General risk14%
Mo 20 Jul
1.3
No storm
Quiet
General risk11%
Tu 21 Jul
2.0
No storm · Estimate
Quiet
General risk14%
We 22 Jul
4.0
Active field · Estimate
Active
General risk32%
Th 23 Jul
3.0
Unsettled field · Estimate
Quiet
General risk23%
01 · Cities

Major cities in Republic of South Africa

Estimated effective exposure at the coming peak (Kp 3.0). Open a city for its local timing and aurora odds.

Johannesburg 2.4 -27.6° magCape Town 2.6 -33.6° magDurban 2.5 -31.6° magPretoria 2.4 -27.1° magSoweto 2.4 -27.6° magGqeberha 2.6 -34.8° magSoshanguve 2.4 -26.9° magPietermaritzburg 2.5 -31.3° magEvaton 2.4 -27.9° magBenoni 2.4 -27.6° magBloemfontein 2.5 -30.1° magThembisa 2.4 -27.4° magEast London 2.6 -34.2° magVereeniging 2.4 -28° magBoksburg 2.4 -27.6° magWelkom 2.5 -29.1° magNewcastle 2.5 -29.4° magKrugersdorp 2.4 -27.4° magRustenburg 2.4 -26.9° magEmalahleni 2.4 -27.4° magDiepsloot 2.4 -27.3° magRandburg 2.4 -27.4° magRoodepoort 2.4 -27.5° magBotshabelo 2.5 -30.4° mag
02 · All pages

All cities in Republic of South Africa

Showing the 200 most populous of 304 cities.

FAQ

Republic of South Africa: quick answers

Which cities in Republic of South Africa feel geomagnetic storms the strongest?

The higher the geomagnetic latitude, the stronger the effect. Among the listed cities the most exposed are Gqeberha, Jeffreys Bay, Humansdorp.

Can you see auroras in Republic of South Africa?

It depends on latitude: Republic of South Africa's cities sit between geomagnetic -34.8° and -24.1°. The closer a city is to the auroral oval, the lower the Kp it needs — each city page shows its own threshold and tonight's estimate.

Is the forecast different across Republic of South Africa?

The Kp index is planetary — the same for all of Republic of South Africa. What differs is the effective local exposure (2.3–2.6 at the coming peak) and the timing, which each city page shows in its own timezone.

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