Kp-index Help

NOAA SWPC Planetary K-index

This is the planetary K-index from the NOAA SWPC. This is a preliminary Kp-index that is updated every minute by the NOAA SWPC with an estimate of the measured Kp of the past 3 hours based on eight ground-based magnetometers around the world. This estimated 3-hour planetary Kp-index consists of 10 values and ranges from 0 to 9. It is important to understand that this Kp-index isn't a forecast or an indicator of the current conditions, it always shows the Kp-value that was observed during a certain period.

GFZ Potsdam Quicklook Kp-index

This is the Quicklook Kp-index from the GFZ German Research Centre for Geosciences. This is a preliminary Kp-index which estimates the Kp-index in 3-hour periods. It is expressed in a scale of thirds and has 28 values.

USAF Wing Kp-index

This is the Wing-Kp index from the U.S. Air Force Weather Agency. The Wing Kp model uses solar wind data to produce a 1-hour advance prediction of the level of geomagnetic activity, as represented by the planetary K-index, every 15 minutes. It is expressed in a scale of thirds and has 28 values. The Wing Kp model also provides an observed Kp-value from a magnetometer network of the USAF but this is not a real-time measurement.

Observed Kp: 1
Predicted Kp: 2- (+60m Kp: 2-)
Current data suggest that it is not possible to see aurora now at middle latitudes

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Today's space weather

Auroral activity Minor Severe
High latitude 25% 50%
Middle latitude 15% 1%
Predicted Kp max 4
Solar activity
M-class solar flare 1%
X-class solar flare 1%
Moon phase
Waxing Gibbous

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/02/23Kp5 (G1)
Number of spotless days in 2018:24
Current stretch spotless days:8

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12014X4.9
22002M1.0
32000C8.6
42004C8.0
52014C5.7
ApG
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2199618G1
3199414
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*since 1994

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