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Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
04:02------
04:01------
04:00---0.0390.8-0.0
03:59---2.430.0391.10.5
03:585.09406.1-3.150.0386.40.3
03:574.85405.9-2.550.0379.8-0.2
03:564.68404.0-2.430.0376.1-0.1
03:554.77400.2-2.810.0389.70.8
03:544.78398.0-3.210.0388.40.9
03:534.95398.6-2.740.0407.50.8
03:524.77394.1-1.150.0390.10.9
03:514.62393.7-0.130.0393.00.9
03:504.71396.50.650.0390.20.7
03:494.34394.0-0.500.0388.61.3
03:484.18394.5-0.530.0392.41.2
03:474.12395.2-0.270.0391.51.2
03:464.08395.4-0.110.0384.41.3
03:454.09395.4-0.010.0390.61.3
03:444.23394.70.110.0395.21.3
03:434.31395.00.140.0385.91.5
03:424.50395.30.270.0378.22.3
03:414.57395.90.540.0387.63.0
03:404.72396.10.740.0387.62.9
03:394.71394.30.630.0385.02.7
03:384.70394.90.620.0384.82.7
03:374.28396.10.510.0383.32.5
03:364.25396.20.550.0389.42.4
03:354.12396.70.740.0387.12.2
03:344.04396.90.760.0384.12.3
03:334.04396.30.770.0397.72.1
03:324.06396.30.800.0392.52.1
03:314.05396.60.870.0389.72.0
03:304.08396.51.090.0394.21.7
03:293.97397.11.220.0409.01.6
03:283.96397.51.120.0404.41.6
03:274.15403.11.400.0396.11.6
03:263.94398.91.470.0395.81.8
03:253.84399.91.390.0379.11.9
03:243.88399.61.540.0387.82.1
03:233.99398.71.710.0400.02.2
03:223.89400.01.460.0392.12.2
03:213.73399.71.620.0403.21.6
03:203.78399.61.700.0396.11.4
03:193.72399.91.900.0395.41.4
03:183.88400.52.010.0402.41.6
03:173.85400.71.800.0414.61.7
03:164.08398.21.150.0405.11.7
03:153.79399.61.520.0394.51.7
03:143.92399.81.340.0389.71.8
03:134.01400.61.230.0395.71.7
03:124.08399.91.130.0399.91.3
03:114.10399.61.140.0394.11.0
03:104.24397.81.230.0390.80.5
03:094.26398.21.220.0396.90.8
03:084.16399.71.180.0401.02.1
03:073.95398.61.31--1.9
03:064.23400.71.300.0393.81.8
03:054.35401.21.370.0394.01.9
03:044.09400.41.450.0409.22.0
03:034.06401.10.410.0381.01.9
03:024.04401.30.110.0387.51.7
03:013.97400.80.690.0406.01.8
03:003.92400.61.200.0401.01.7
02:593.96401.11.13--1.9
02:584.02402.51.550.0398.72.0
02:573.83401.71.410.0393.32.4
02:563.80401.41.370.0393.32.2
02:553.74402.71.340.0398.71.6
02:543.76402.71.320.0395.51.5
02:533.88401.71.170.0390.71.6
02:523.86404.11.390.0392.41.8
02:513.87402.81.290.0400.81.8
02:503.88404.91.230.0402.81.9
02:493.90405.30.960.0403.52.0
02:483.87403.70.940.0426.41.8
02:473.99406.91.020.0392.01.5
02:463.98402.40.760.0395.41.5
02:453.80401.41.170.0392.41.6
02:443.74400.51.380.0391.31.8
02:433.74399.41.390.0400.31.3
02:423.61397.71.480.0398.30.8
02:413.83398.81.640.0396.31.4
02:403.87401.01.250.0398.41.2
02:393.89402.20.900.0398.20.6
02:383.94408.70.290.0400.10.2
02:373.98407.00.010.0403.7-0.0
02:364.05406.6-0.110.0399.20.2
02:354.02406.3-0.060.0400.00.1
02:344.00407.00.060.0415.00.3
02:333.94407.1-0.010.0-0.1
02:323.92408.3-0.080.0400.20.9
02:313.89403.7-0.060.0394.41.0
02:303.86403.10.320.0388.80.8
02:293.49400.11.300.0394.80.9
02:283.69400.11.130.0388.71.3
02:273.75400.10.680.0392.31.0
02:264.00400.80.590.0390.60.3
02:253.71400.71.010.0395.60.4
02:243.61400.10.740.0393.20.5
02:233.59400.40.610.0386.00.8
02:223.41399.50.600.0386.50.8
02:213.46399.50.430.0383.71.0
02:203.70399.20.330.0393.11.5
02:193.40399.00.250.0406.11.2
02:183.48399.30.620.0391.11.2
02:173.46399.70.180.0386.12.4
02:163.62401.30.450.0437.42.6
02:153.87402.50.110.0398.12.1
02:143.77401.80.030.0387.21.9
02:133.50399.50.750.0374.71.7
02:123.60400.20.480.0462.71.8
02:113.64399.80.280.0416.61.9
02:103.45400.30.740.0392.91.7
02:093.55399.20.710.0391.31.6
02:083.27398.50.990.0389.01.7
02:073.40398.61.250.0392.51.8
02:063.33399.21.340.0391.42.2
02:053.45399.81.440.0391.62.1
02:043.51394.61.630.0383.71.5
02:033.49396.91.590.0378.61.5
Built 2021-05-14 04:03 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-3.22.00.7
velocity [km/s]393.7404.0398.3
density [cm-3]3.75.04.2
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)15466
Maasi (MAS)15472
Kilpisjärvi (KIL)16472
Ivalo (IVA)14345
Muonio (MUO)14343
Sodankylä (SOD)14338
Pello (PEL)13335
Oulujärvi (OUJ)11221
Mekrijärvi (MEK)7212
Hankasalmi (HAN)6215
Nurmijärvi (NUR)5216
Tartu (TAR)3211
low increasedmoderate high very high

Short explanation of the method

AurorasNow! (Finnish Meteorological Institute)
Built 2021-05-14 04:02 from source
Issue Time: 2021-05-13 05:31 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3898
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 15:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3897
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 06:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1600
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-13 06:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

Issue Time: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 443
Valid From: 2021-05-12 12:25 UTC
Now Valid Until: 2021-05-12 23:59 UTC
Warning Condition: Persistence
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

Issue Time: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 77
Valid From: 2021-05-12 12:50 UTC
Now Valid Until: 2021-05-12 23:59 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2021-05-12 17:59 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 17:59 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2021-05-12 15:42 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 15:42 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

Issue Time: 2021-05-12 15:29 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 15:28 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

Issue Time: 2021-05-12 12:59 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 12:58 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2021-05-12 12:52 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1599
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-12 18:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

Issue Time: 2021-05-12 12:49 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2021-05-12 12:50 UTC
Valid To: 2021-05-12 18:00 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2021-05-12 12:32 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 12:32 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

Issue Time: 2021-05-12 12:30 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 12:30 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

Issue Time: 2021-05-12 12:28 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2021-05-12 12:25 UTC
Valid To: 2021-05-12 18:00 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

Issue Time: 2021-05-12 11:23 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3896
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-12 18:00 UTC
Warning Condition: Persistence
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2021-05-12 07:11 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-05-12 07:11 UTC
Synoptic Period: 0600-0900 UTC

Active Warning: Yes
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2021-05-12 06:54 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-05-12 06:43 UTC
Deviation: 51 nT
Station: FRD

Issue Time: 2021-05-12 06:46 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021-05-12 07:00 UTC
Valid To: 2021-05-12 13:00 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

Issue Time: 2021-05-12 05:58 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-05-12 06:00 UTC
Valid To: 2021-05-12 12:30 UTC
Warning Condition: Onset
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2021-05-12 05:56 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-05-12 05:54 UTC
Valid To: 2021-05-12 07:00 UTC
IP Shock Passage Observed: 2021-05-12 05:47 UTC

Built 2021-05-13 05:34 from source