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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
19:10------
19:09------
19:0819.16393.7----
19:0724.08399.4-2.3524.1399.4-2.4
19:0619.69396.5-2.7219.7396.5-2.7
19:0512.95371.1-4.0212.9371.1-4.0
19:0412.32383.4-5.2312.3383.4-5.2
19:0323.90392.3-6.3023.9392.3-6.3
19:0220.79389.8-6.2220.8389.8-6.2
19:0112.05374.1-9.4612.0374.1-9.5
19:0015.65385.8-8.7915.6385.8-8.8
18:5920.95393.9-8.9620.9393.9-9.0
18:5820.08393.0-9.0820.1393.0-9.1
18:5713.57380.9-9.1813.6380.9-9.2
18:5612.54380.9-9.0512.5380.9-9.1
18:5518.67394.9-8.3318.7394.9-8.3
18:5420.75396.3-7.9120.8396.3-7.9
18:5316.39387.3-9.1716.4387.3-9.2
18:5211.67375.2-9.0811.7375.2-9.1
18:5118.24391.8-9.3018.2391.8-9.3
18:5020.81393.9-7.7920.8393.9-7.8
18:4921.00399.8-6.8921.0399.8-6.9
18:488.34371.2-6.708.3371.2-6.7
18:4715.20389.9-6.7015.2389.9-6.7
18:4620.19392.7-6.0620.2392.7-6.1
18:4519.84393.5-5.9219.8393.5-5.9
18:4415.23379.5-6.0215.2379.5-6.0
18:4313.53373.9-5.9013.5373.9-5.9
18:4221.48393.2-6.4921.5393.2-6.5
18:4120.40395.0-5.8120.4395.0-5.8
18:4016.58383.8-6.3916.6383.8-6.4
18:3914.65375.3-4.9614.7375.3-5.0
18:3817.28385.7-4.4217.3385.7-4.4
18:3717.82385.3-5.0417.8385.3-5.0
18:3616.89387.0-4.8516.9387.0-4.8
18:3511.78368.9-4.8811.8368.9-4.9
18:3416.52387.9-4.6016.5387.9-4.6
18:3319.25388.5-4.2819.3388.5-4.3
18:3219.57395.0-3.1419.6395.0-3.1
18:319.95368.5-3.0910.0368.5-3.1
18:3012.87380.3-2.7712.9380.3-2.8
18:2917.60390.1-0.4517.6390.1-0.4
18:2820.07399.3-0.3920.1399.3-0.4
18:2713.88385.80.3213.9385.80.3
18:2611.84383.50.9711.8383.51.0
18:2513.61389.00.9613.6389.01.0
18:2414.71392.70.5614.7392.70.6
18:2313.98390.21.7514.0390.21.8
18:2211.71385.42.6111.7385.42.6
18:2114.12399.21.9014.1399.21.9
18:2021.72411.0-4.3621.7411.0-4.4
18:1919.97418.6-6.4520.0418.6-6.4
18:1819.14402.1-7.9919.1402.1-8.0
18:1719.16413.0-7.7619.2413.0-7.8
18:1624.32421.0-7.5824.3421.0-7.6
18:1520.85428.8-7.8320.9428.8-7.8
18:1418.42405.7-8.0718.4405.7-8.1
18:1317.19404.1-8.4517.2404.1-8.4
18:1217.84405.8-8.0517.8405.8-8.1
18:1120.72395.6-8.2820.7395.6-8.3
18:1022.08390.0-8.0122.1390.0-8.0
18:0918.25412.4-7.4018.3412.4-7.4
18:0819.59415.4-7.4819.6415.4-7.5
18:0720.12424.9-7.4420.1424.9-7.4
18:0618.67422.6-6.9818.7422.6-7.0
18:0518.82399.8-6.8818.8399.8-6.9
18:0415.83406.5-6.8815.8406.5-6.9
18:039.56404.5-7.569.6404.5-7.6
18:027.86413.5-1.707.9413.5-1.7
18:016.91392.38.786.9392.38.8
18:006.82397.28.446.8397.28.4
17:598.06405.08.358.1405.08.3
17:5810.22410.28.0410.2410.28.0
17:579.18396.77.609.2396.77.6
17:567.69392.17.387.7392.17.4
17:5510.24402.27.5210.2402.27.5
17:5410.85410.96.9310.8410.96.9
17:539.68401.56.469.7401.56.5
17:528.89392.96.698.9392.96.7
17:518.60395.86.488.6395.86.5
17:508.98396.36.469.0396.36.5
17:499.52397.16.219.5397.16.2
17:4810.08393.95.5910.1393.95.6
17:479.63389.55.659.6389.55.6
17:4612.36404.44.0512.4404.44.0
17:4510.76397.93.9710.8397.94.0
17:4410.27393.63.9210.3393.63.9
17:437.62379.94.157.6379.94.2
17:4213.06396.94.6113.1396.94.6
17:4111.54397.33.1311.5397.33.1
17:409.45389.92.769.5389.92.8
17:399.83394.22.459.8394.22.5
17:38--3.28--3.3
17:37--3.94--3.9
17:369.77391.93.609.8391.93.6
17:359.00388.84.199.0388.84.2
17:348.83389.74.338.8389.74.3
17:3311.38402.44.1111.4402.44.1
17:3212.03401.14.1012.0401.14.1
17:3111.25393.12.6111.3393.12.6
17:309.31382.01.739.3382.01.7
17:2912.19394.61.0612.2394.61.1
17:2813.04398.60.3913.0398.60.4
17:2712.67400.60.4312.7400.60.4
17:2611.55383.00.3111.6383.00.3
17:2512.16395.0-0.0812.2395.0-0.1
17:2412.61399.8-0.4012.6399.8-0.4
17:2312.75403.7-0.3912.8403.7-0.4
17:2210.18391.6-1.1610.2391.6-1.2
17:2110.32390.3-1.9610.3390.3-2.0
17:2012.86399.7-1.3512.9399.7-1.4
17:1913.19401.3-1.5213.2401.3-1.5
17:1812.12399.2-1.3512.1399.2-1.4
17:1711.64394.7-1.4511.6394.7-1.4
17:1611.98396.3-1.6212.0396.3-1.6
17:1511.73396.1-1.4811.7396.1-1.5
17:1412.83402.3-0.9412.8402.3-0.9
17:1312.07395.1-1.3612.1395.1-1.4
17:1211.59393.0-1.0511.6393.0-1.0
17:1112.30398.20.2912.3398.20.3
Built 2025-04-20 19:11 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-9.38.8-4.5
velocity [km/s]368.5428.8395.5
density [cm-3]6.824.316.2
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)1135410
Maasi (MAS)927372
Kilpisjärvi (KIL)1831394
Ivalo (IVA)821400
Muonio (MUO)1720414
Sodankylä (SOD)1016392
Pello (PEL)1613398
Oulujärvi (OUJ)1510238
Mekrijärvi (MEK)9582
Hankasalmi (HAN)9771
Nurmijärvi (NUR)9757
Tartu (TAR)6537
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-04-20 19:02 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2025-04-20 00:56 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-04-20 00:55 UTC
Synoptic Period: 0000-0300 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: 2025-04-20 00:41 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-04-20 00:38 UTC
Synoptic Period: 0000-0300 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: 2025-04-20 00:38 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-04-20 00:38 UTC
Valid To: 2025-04-20 12:00 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: 2025-04-20 00:06 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-04-20 00:05 UTC
Valid To: 2025-04-20 12:00 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: 2025-04-19 20:47 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
Apr 20: None (Below G1) Apr 21: None (Below G1) Apr 22: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: 2025-04-19 14:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4931
Valid From: 2025-04-19 02:18 UTC
Now Valid Until: 2025-04-19 23:59 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: 2025-04-19 02:27 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-04-19 02:27 UTC
Synoptic Period: 0000-0300 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: 2025-04-19 02:19 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-04-19 02:18 UTC
Valid To: 2025-04-19 15:00 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: 2025-04-19 00:07 UTC
ALERT: Type II Radio Emission
Begin Time: 2025-04-18 23:45 UTC
Estimated Velocity: 349 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

Issue Time: 2025-04-18 04:48 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-04-18 04:47 UTC
Valid To: 2025-04-18 12:00 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: 2025-04-18 04:02 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-04-18 03:57 UTC
Synoptic Period: 0300-0600 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: 2025-04-18 01:52 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-04-18 01:52 UTC
Valid To: 2025-04-18 12:00 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.

Built 2025-04-20 18:57 from source