:Product: Geomagnetic Data 7day_AK.txt :Issued: 0033 UTC 24 Apr 2021 # # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # Please send comments and suggestions to SWPC.Webmaster@noaa.gov # Updated every hour beginning at 0029 UTC. # Values shown as reported, SEC does not verify accuracy. # Missing Data: -1 # # Geomagnetic A and K indices from the U.S. Geological Survey Stations # # Geomagnetic # Dipole A ------------- 3 Hourly K Indices -------------- # Station Lat Long Index 00-03 03-06 06-09 09-12 12-15 15-18 18-21 21-24 #------------------------------------------------------------------------------- 2021 Apr 17 Boulder N49 W 42 25 4 4 5 3 4 4 3 3 Chambon-la-foret N-- E--- 31 5 4 3 3 4 4 3 3 College N65 W102 57 5 4 6 7 6 5 3 3 Fredericksburg N38 W 78 20 3 4 5 3 3 2 2 4 Kergulen Island S57 E130 -1 -1 -1 -1 -1 -1 -1 -1 -1 Learmonth S22 E114 -1 -1 -1 -1 -1 -1 -1 -1 -1 Planetary(estimated Ap) 29 5 5 5 4 4 3 3 4 Wingst N54 E 95 31 5 4 4 3 4 5 4 4 2021 Apr 18 Boulder N49 W 42 18 3 4 4 4 2 2 3 3 Chambon-la-foret N-- E--- 25 3 2 2 3 2 2 3 4 College N65 W102 36 3 3 5 7 5 2 2 2 Fredericksburg N38 W 78 13 3 3 3 3 2 2 3 3 Kergulen Island S57 E130 -1 -1 -1 -1 -1 -1 -1 -1 -1 Learmonth S22 E114 -1 -1 -1 -1 -1 -1 -1 -1 -1 Planetary(estimated Ap) 16 4 4 3 3 2 2 3 4 Wingst N54 E 95 20 4 3 3 3 3 3 4 4 2021 Apr 19 Boulder N49 W 42 20 3 4 4 4 3 3 3 3 Chambon-la-foret N-- E--- 28 3 3 3 3 3 3 4 3 College N65 W102 47 3 3 5 7 5 5 5 3 Fredericksburg N38 W 78 15 3 3 3 3 3 3 3 3 Kergulen Island S57 E130 -1 -1 -1 -1 -1 -1 -1 -1 -1 Learmonth S22 E114 -1 -1 -1 -1 -1 -1 -1 -1 -1 Planetary(estimated Ap) 18 4 4 3 3 3 3 4 3 Wingst N54 E 95 18 3 3 3 3 3 3 4 4 2021 Apr 20 Boulder N49 W 42 13 3 4 3 3 1 2 3 2 Chambon-la-foret N-- E--- 20 3 2 2 2 2 2 4 3 College N65 W102 26 3 3 5 6 3 3 3 2 Fredericksburg N38 W 78 10 3 3 2 2 2 1 2 3 Kergulen Island S57 E130 -1 -1 -1 -1 -1 -1 -1 -1 -1 Learmonth S22 E114 -1 -1 -1 -1 -1 -1 -1 -1 -1 Planetary(estimated Ap) 13 3 3 2 3 2 2 3 3 Wingst N54 E 95 15 3 2 2 3 2 3 4 4 2021 Apr 21 Boulder N49 W 42 9 2 3 3 3 2 1 1 1 Chambon-la-foret N-- E--- 8 2 2 2 1 1 1 1 1 College N65 W102 16 1 2 5 5 3 1 1 0 Fredericksburg N38 W 78 7 2 3 2 2 2 1 1 1 Kergulen Island S57 E130 -1 -1 -1 -1 -1 -1 -1 -1 -1 Learmonth S22 E114 -1 -1 -1 -1 -1 -1 -1 -1 -1 Planetary(estimated Ap) 7 2 3 2 2 2 0 1 1 Wingst N54 E 95 6 2 2 2 2 2 1 1 2 2021 Apr 22 Boulder N49 W 42 7 2 2 3 1 2 2 0 2 Chambon-la-foret N-- E--- 14 1 1 1 2 2 0 1 3 College N65 W102 9 1 2 3 4 3 1 0 0 Fredericksburg N38 W 78 4 1 1 2 1 2 0 1 2 Kergulen Island S57 E130 -1 -1 -1 -1 -1 -1 -1 -1 -1 Learmonth S22 E114 -1 -1 -1 -1 -1 -1 -1 -1 -1 Planetary(estimated Ap) 5 2 2 2 2 2 0 0 2 Wingst N54 E 95 6 2 1 1 2 2 1 1 3 2021 Apr 23 Boulder N49 W 42 15 3 2 3 4 2 3 2 4 Chambon-la-foret N-- E--- -1 3 2 -1 -1 -1 -1 -1 -1 College N65 W102 13 1 3 3 4 2 3 1 3 Fredericksburg N38 W 78 15 3 2 3 3 2 3 3 4 Kergulen Island S57 E130 -1 -1 -1 -1 -1 -1 -1 -1 -1 Learmonth S22 E114 -1 -1 -1 -1 -1 -1 -1 -1 -1 Planetary(estimated Ap) 15 3 3 3 2 1 3 3 5 Wingst N54 E 95 -1 -1 -1 -1 -1 -1 -1 -1 -1