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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
17:25------
17:24------
17:23------
17:224.63462.2-2.61---
17:213.28476.1-3.76---
17:202.35480.5-4.64---
17:192.45490.8-3.73---
17:183.57501.8-0.27---
17:173.52495.4-0.73---
17:163.21497.9-1.96---
17:151.92506.00.33---
17:140.89499.4-1.91---
17:130.16496.6-3.05---
17:120.14484.81.11---
17:110.41488.7-0.14---
17:100.76494.90.65---
17:091.52488.80.69---
17:082.16508.51.93---
17:071.09482.40.961.1482.41.0
17:060.48471.80.440.5471.80.4
17:050.46476.92.160.5476.92.2
17:041.91492.33.331.9492.33.3
17:032.84511.14.362.8511.14.4
17:021.44498.7-1.4498.7-
17:010.37462.83.580.4462.83.6
17:000.36462.84.010.4462.84.0
16:591.14478.25.261.1478.25.3
16:581.80467.53.452.3470.13.5
16:576.16499.4-2.806.2499.4-2.8
16:5612.19512.6-3.7812.2512.6-3.8
16:551.86490.3-2.991.9490.3-3.0
16:542.04491.3-0.282.0491.3-0.3
16:530.80510.03.670.8510.03.7
16:520.90508.14.230.9508.14.2
16:511.12507.04.831.1507.04.8
16:500.57487.74.890.6487.74.9
16:491.43490.64.251.4490.64.3
16:482.08501.64.592.1501.64.6
16:471.18493.84.671.2493.84.7
16:461.68497.35.271.7497.35.3
16:454.00520.24.994.0520.25.0
16:440.16479.44.810.2479.44.8
16:430.40482.75.810.4482.75.8
16:422.13503.57.042.1503.57.0
16:415.71524.18.645.7524.18.6
16:405.61505.86.475.6505.86.5
16:390.33468.75.950.3468.75.9
16:382.22507.07.272.2507.07.3
16:372.18504.46.972.2504.47.0
16:362.48518.56.622.5518.56.6
16:352.07532.58.462.1532.58.5
16:341.94512.88.571.9512.88.6
16:331.79514.08.581.8514.08.6
16:320.97512.58.631.0512.58.6
16:310.31497.58.930.3490.08.9
16:300.32498.59.510.3479.39.5
16:290.34484.410.020.3484.410.0
16:280.24500.310.460.2500.310.5
16:270.33497.011.690.3497.011.7
16:260.73516.110.890.7516.110.9
16:251.06485.710.751.1485.710.8
16:240.48469.610.550.5469.610.5
16:233.95480.011.303.9480.011.3
16:221.21527.711.591.2527.711.6
16:211.04529.611.431.0529.611.4
16:201.00529.412.911.0529.412.9
16:191.12536.113.321.1536.113.3
16:180.66517.713.810.7517.713.8
16:170.33495.114.470.3495.114.5
16:160.30496.514.760.3496.514.8
16:150.44508.315.070.4508.315.1
16:140.74515.816.300.7515.816.3
16:130.86524.416.190.9524.416.2
16:12--16.31--16.3
16:110.26488.916.540.3488.916.5
16:100.40487.016.910.4487.016.9
16:091.98466.017.692.0466.017.7
16:080.10495.117.810.1495.117.8
16:070.05426.018.600.0426.018.6
16:060.11477.419.190.1477.419.2
16:050.07435.619.500.1435.619.5
16:040.12474.519.760.1474.519.8
16:030.50492.720.410.5492.720.4
16:020.76477.720.130.8477.720.1
16:010.83497.519.320.8497.519.3
16:000.85521.619.310.9521.619.3
15:590.85513.4-0.9513.4-
15:580.24513.321.900.2513.321.9
15:570.17521.022.400.2521.022.4
15:560.17529.222.220.2529.222.2
15:550.19526.721.350.2526.721.3
15:540.09487.722.110.1487.722.1
15:530.09529.823.420.1529.823.4
15:520.09543.023.950.1543.024.0
15:510.08511.024.090.1511.024.1
15:500.25499.724.300.2499.724.3
15:490.10447.924.390.1447.924.4
15:480.09499.824.500.1499.824.5
15:470.21478.425.250.2478.425.2
15:460.21474.824.830.2474.824.8
15:450.27489.724.910.3489.724.9
15:440.36501.726.060.4501.726.1
15:430.31505.626.910.3505.626.9
15:420.25501.127.660.3501.127.7
15:410.36502.527.740.4502.527.7
15:400.34490.327.770.3490.327.8
15:390.20471.127.040.2471.127.0
15:380.64522.727.100.6522.727.1
15:370.64522.427.500.6522.427.5
15:360.24501.527.270.2501.527.3
15:350.24470.229.520.2470.229.5
15:340.09442.129.280.1442.129.3
15:335.64478.130.175.6478.130.2
15:328.62471.130.548.6471.130.5
15:316.40518.629.926.4518.629.9
15:307.19554.221.197.2554.221.2
15:298.12543.819.568.8545.819.6
15:287.81529.618.787.8525.318.8
15:276.26522.619.536.3522.619.5
15:264.31532.920.954.3532.920.9
Built 2026-03-21 17:26 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-3.815.16.3
velocity [km/s]462.8536.1498.5
density [cm-3]0.112.21.6
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)3710136
Maasi (MAS)4011137
Kilpisjärvi (KIL)3412119
Ivalo (IVA)3411117
Muonio (MUO)3010118
Sodankylä (SOD)308111
Pello (PEL)328103
Oulujärvi (OUJ)25676
Mekrijärvi (MEK)13239
Hankasalmi (HAN)16663
Nurmijärvi (NUR)14759
Tartu (TAR)10633
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2026-03-21 17:17 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2026-03-21 16:50 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2209
Valid From: 2026-03-20 19:30 UTC
Now Valid Until: 2026-03-22 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: 2026-03-21 16:47 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5291
Valid From: 2026-03-20 07:19 UTC
Now Valid Until: 2026-03-22 12:00 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: 2026-03-21 07:53 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-03-21 07:52 UTC
Synoptic Period: 0600-0900 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: 2026-03-21 05:17 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 645
Valid From: 2026-03-20 20:20 UTC
Now Valid Until: 2026-03-21 15:00 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: 2026-03-21 05:17 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-03-21 05:14 UTC
Synoptic Period: 0300-0600 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: 2026-03-21 05:17 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2208
Valid From: 2026-03-20 19:30 UTC
Now Valid Until: 2026-03-21 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: 2026-03-21 05:17 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5290
Valid From: 2026-03-20 07:19 UTC
Now Valid Until: 2026-03-21 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: 2026-03-21 03:32 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-03-21 03:31 UTC
Synoptic Period: 0300-0600 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: 2026-03-21 01:54 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-03-21 01:54 UTC
Synoptic Period: 0000-0300 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: 2026-03-21 01:41 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-03-21 01:41 UTC
Synoptic Period: 0000-0300 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: 2026-03-21 00:34 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-03-21 00:33 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: 2026-03-20 23:29 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026-03-20 23:28 UTC
Synoptic Period: 2100-2400 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: 2026-03-20 23:05 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2026-03-20 23:05 UTC
Valid To: 2026-03-21 06:00 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
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: 2026-03-20 22:12 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-03-20 22:08 UTC
Synoptic Period: 2100-2400 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: 2026-03-20 21:36 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-03-20 21:26 UTC
Synoptic Period: 2100-2400 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: 2026-03-20 21:09 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2026-03-20 20:53 UTC
Deviation: 56 nT
Station: BOU

Issue Time: 2026-03-20 21:04 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-03-20 20:59 UTC
Synoptic Period: 1800-2100 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: 2026-03-20 20:43 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day
Mar 20: G3 (Strong) Mar 21: G3 (Strong) Mar 22: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: G3 (Strong) geomagnetic storming is likely due to combined CME effects from events that left the Sun on 16 and 18 Mar.
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: 2026-03-20 20:40 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2026-03-20 20:50 UTC
Valid To: 2026-03-20 21:20 UTC
IP Shock Passage Observed: 2026-03-20 21:18 UTC

Issue Time: 2026-03-20 20:22 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2026-03-20 20:20 UTC
Valid To: 2026-03-21 06:00 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Comment: G2 (Moderate) geomagnetic storm conditions are expected into the the early portions of 21 Mar (UTC) due to CME effects.
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: 2026-03-20 20:18 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-03-20 20:18 UTC
Synoptic Period: 1800-2100 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: 2026-03-20 19:32 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-03-20 19:30 UTC
Valid To: 2026-03-21 09:00 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: 2026-03-20 14:55 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3651
Begin Time: 2026-03-15 16:30 UTC
Yesterday Maximum 2MeV Flux: 4941 pfu

Issue Time: 2026-03-20 12:39 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5289
Valid From: 2026-03-20 07:19 UTC
Now Valid Until: 2026-03-21 12:00 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: 2026-03-20 08:54 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-03-20 08:54 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: 2026-03-20 07:18 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-03-20 07:19 UTC
Valid To: 2026-03-20 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: 2026-03-19 04:59 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3650
Begin Time: 2026-03-15 16:30 UTC
Yesterday Maximum 2MeV Flux: 2949 pfu

Issue Time: 2026-03-18 21:14 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
Mar 19: G2 (Moderate) Mar 20: G2 (Moderate) Mar 21: 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.

Built 2026-03-21 16:53 from source