GEOMAGNETIC/SOLAR FIELDS
The geomagnetic field saw disturbed conditions today. The AP level was 12. High latitude geomagnetic field was active with AP at 28. KP levels at high latitude reached 7 mid-day on April 20. This appears to conclude the most active the geomagnetic field has been since it reached AP 47 on November 8, 2017 with high latitude AP 82. This could launch a new round of increased seismicity beginning April 21 with most likely strong quakes near the geomagnetic equator and at high latitudes around April 24-27, but this may change depending on how long the storm lasts (it is not expected to be a long-lived event).
The geomagnetic field is expected to see unsettled conditions on April 22 declining to quiet on April 23-24. Solar activity is expected to be at quiet conditions April 22-24, 2018 with a slight chance (1%) of an M-class flare.
SOLAR FLARE ACTIVITY
Flare # START MAX END CLASS DATE Flux (Jm-2)
#-------------------------------------------------------------------------------
4870 0601 0608 0619 B1.1 (April 21, 2018) 1.0E-04
4880 1045 1051 1058 B2.0 (April 21, 2018) 1.1E-04
4890 1844 1851 1904 B1.8 (April 21, 2018) 1.7E-04
4900 2055 2058 2100 B1.2 (April 21, 2018) 2.0E-05
4910 2137 2140 2144 B1.1 (April 21, 2018) 3.2E-05
AP INDICIES
OCTOBER 2017
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 11 7 8 5 7 9 5 4 3 4 30 29 42 31 26
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 9 6 5 12 8 10 6 6 18 21 20 5 6 4 3 3
NOVEMBER 2017
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 4 8 9 4 3 2 36 47 20 21 8 6 6 11 14
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
AP: 14 6 6 5 8 28 10 9 10 7 3 5 8 5 11
DECEMBER 2017
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 8 4 2 11 29 16 10 5 4 3 10 13 7 5 5
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 4 24 17 6 5 3 2 5 12 10 11 7 5 4 3 4
JANUARY 2018
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 11 5 4 4 5 3 3 9 9 5 2 4 7 14 9
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 4 3 2 8 8 10 12 4 9 10 8 6 4 4 5 7
FEBRUARY 2018
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 4 4 3 3 8 5 4 4 5 7 3 4 3 3 11
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28
AP: 7 12 14 17 5 4 11 16 9 4 7 19 7
MARCH 2018
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 6 4 6 6 5 5 4 4 12 12 6 3 4 9 15
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
AP: 20 13 25 16 8 4 7 17 9 17 12 9 3 4 5 7
APRIL 2018
DATE: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
AP: 5 5 4 5 9 4 5 5 11 18 14 9 9 6 6
DATE: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
AP: 3 4 6 3 47 12
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