Calculate Correct Magnetic Coords and Kp

Notes about GeoToMag

Input Latitude and Longitude must be in the above example format. No value should be greater than 180 degrees and no negative numbers either.

You can obtain your latitude/longitude by going to Heavens Above and then return here. If Latitude is negative, it is South. If Longitude is negative, it's West.

After you submit the form you need to note your "AlertOverheadKpIndex" or "AlertHorizonKpIndex" depending on your preference.

• GeoLat/GeoLon: are the parameters provided as input in the form.
• CorrectedMagLat/CorrectedMagLon: are the corrected magnetic latitude and magentic longitude. The data is corrected to the year 2002.
• GeoHemisphere: The hemisphere that the original latitude/longitude resides in.
• MagHemisphere: The magnetic hemisphere that the magnetic latitude/longitude resides in.
• OverheadKpIndex: The minimum Kp Index for an aurora to be seen overhead at local midnight.
• HorizonKpIndex: The minimum Kp Index for an aurora to be seen at least 20 degrees above the Northern Horizon at local midnight.
• AlertOverheadKpIndex: The alerting kp value for ADEC for an aurora overhead at local midnight. At higher Kp values, ADEC tends to underalert due to the lack of historical data. This is the value you should set your alerts for.
• AlertHorizonKpIndex: The alerting kp value for ADEC for an aurora at least 20 degrees above the horizon aurora at local midnight. At higher Kp values, ADEC tends to underalert due to the lack of historical data. This is the value you should set your alerts for.