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Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
10:54------
10:53------
10:523.10646.7-1.25---
10:513.77655.3-2.54---
10:503.88710.64.12---
10:493.19612.8-0.01---
10:483.83656.1-6.83---
10:474.13684.4-4.09---4.1
10:464.14692.5-7.134.1692.5-7.1
10:453.93679.2-4.753.9679.2-4.7
10:443.79674.6-3.523.8674.6-3.5
10:433.67686.7-2.183.7686.7-2.2
10:423.71702.1-2.273.7702.1-2.3
10:413.61703.51.933.6703.51.9
10:403.60720.0-1.333.6720.0-1.3
10:394.14748.8-2.994.1748.8-3.0
10:383.10667.8-6.163.1667.8-6.2
10:370.78586.0-5.580.8586.0-5.6
10:363.72642.6-5.193.7642.6-5.2
10:354.32702.7-2.734.3702.7-2.7
10:344.66722.72.004.7722.72.0
10:332.90679.93.522.9679.93.5
10:322.71639.1-7.592.7639.1-7.6
10:313.45664.4-6.213.4664.4-6.2
10:303.57683.9-5.643.6683.9-5.6
10:293.28665.8-5.483.3665.8-5.5
10:283.61686.8-7.253.6686.8-7.2
10:273.92708.2-7.903.9708.2-7.9
10:260.06551.8-7.240.1551.8-7.2
10:250.80570.7-5.270.8570.7-5.3
10:243.31626.8-5.303.3626.8-5.3
10:235.35675.2-1.165.3675.2-1.2
10:223.50666.3-2.693.5666.3-2.7
10:214.25693.2-5.194.2693.2-5.2
10:202.92628.1-3.752.9628.1-3.7
10:192.73701.4-6.542.7701.4-6.5
10:183.41676.4-5.943.4676.4-5.9
10:170.56596.0-5.940.6596.0-5.9
10:161.49651.5-0.981.5651.5-1.0
10:152.02706.1-9.122.0706.1-9.1
10:140.76629.0-8.040.8629.0-8.0
10:130.19584.4-6.790.2584.4-6.8
10:122.00619.8-6.122.0619.8-6.1
10:113.48683.9-10.203.5683.9-10.2
10:104.03718.0-9.194.0718.0-9.2
10:094.03702.3-9.194.0702.3-9.2
10:083.44681.5-7.833.4681.5-7.8
10:073.81688.1-7.943.8688.1-7.9
10:064.62674.3-6.714.6674.3-6.7
10:053.48687.1-1.123.5687.1-1.1
10:043.35614.52.933.3614.52.9
10:033.73671.73.223.7671.73.2
10:023.36677.72.213.4677.72.2
10:013.36656.22.543.4656.22.5
10:003.36654.63.303.4654.63.3
09:59------
09:583.56657.32.283.6657.32.3
09:573.70677.71.813.7677.71.8
09:563.46665.01.343.5665.01.3
09:553.34657.52.073.3657.52.1
09:543.44666.01.243.4666.01.2
09:533.40686.13.513.4686.13.5
09:523.22675.04.733.2675.04.7
09:513.50659.75.663.5659.75.7
09:505.23677.83.565.2677.83.6
09:494.99672.80.545.0672.80.5
09:484.56672.71.754.6672.71.8
09:474.46665.32.234.5665.32.2
09:464.05681.73.864.0681.73.9
09:453.72678.53.993.7678.54.0
09:443.35648.44.853.4648.44.9
09:433.75674.54.933.8674.54.9
09:423.62676.95.603.6676.95.6
09:413.96669.95.324.0669.95.3
09:403.36637.65.553.4637.65.5
09:393.13646.76.613.1646.76.6
09:383.47676.14.423.5676.14.4
09:373.59689.75.853.6689.75.9
09:363.59691.27.033.6691.27.0
09:353.52665.95.823.5665.95.8
09:343.55660.35.673.6660.35.7
09:333.33652.25.523.3652.25.5
09:322.91645.26.412.9645.26.4
09:31--6.13--6.1
09:304.13676.05.954.1676.06.0
09:293.83685.35.283.8685.35.3
09:283.71695.07.153.7695.07.2
09:273.70715.19.383.7715.19.4
09:263.37674.18.853.4674.18.9
09:253.29702.19.163.3702.19.2
09:243.70704.99.303.7704.99.3
09:233.68688.08.903.7688.08.9
09:221.91637.58.821.9637.58.8
09:210.18583.68.420.2583.68.4
09:203.69687.38.483.7687.38.5
09:193.71686.17.993.7686.18.0
09:183.60690.07.593.6690.07.6
09:172.95715.97.422.9715.97.4
09:162.79698.88.332.8698.88.3
09:152.93658.46.602.9658.46.6
09:145.35703.81.695.4703.81.7
09:135.58676.51.235.6676.51.2
09:120.96596.32.421.0596.32.4
09:112.11635.82.442.1635.82.4
09:104.19677.63.534.2677.63.5
09:094.60673.60.874.6673.60.9
09:084.63685.10.384.6685.10.4
09:074.84696.40.034.8696.40.0
09:064.52687.3-2.614.5687.3-2.6
09:056.15683.7-5.956.1683.7-5.9
09:047.54684.70.487.5684.70.5
09:033.86676.5-0.033.9676.5-0.0
09:023.67696.4-1.893.7696.4-1.9
09:014.64703.2-1.694.6703.2-1.7
09:004.37690.1-2.074.4690.1-2.1
08:592.54615.7-2.962.5615.7-3.0
08:583.11690.2-0.073.1690.2-0.1
08:574.29700.55.074.3700.55.1
08:564.39709.57.864.4709.57.9
08:553.63696.5-1.093.6696.5-1.1
Built 2025-05-29 10:55 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-10.25.7-2.0
velocity [km/s]551.8748.8666.7
density [cm-3]0.15.33.3
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)19639200
Maasi (MAS)19947228
Kilpisjärvi (KIL)18047215
Ivalo (IVA)20537221
Muonio (MUO)17139219
Sodankylä (SOD)23133205
Pello (PEL)15532202
Oulujärvi (OUJ)10624160
Mekrijärvi (MEK)671471
Hankasalmi (HAN)7014104
Nurmijärvi (NUR)421691
Tartu (TAR)271258
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-05-29 10:47 from source
Issue Time: 2025-05-29 10:35 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-29 10:07 UTC
Synoptic Period: 0900-1200 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: 2025-05-29 08:28 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-29 08:17 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: 2025-05-29 04:53 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-29 04:50 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: 2025-05-29 02:16 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2025-05-29 02:16 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: 2025-05-29 02:12 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2025-05-29 02:11 UTC
Valid To: 2025-05-29 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: 2025-05-29 01:30 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025-05-29 01:29 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: 2025-05-29 01:26 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025-05-29 01:26 UTC
Valid To: 2025-05-29 15:00 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: 2025-05-29 01:22 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-29 01:20 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: 2025-05-29 01:16 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-05-29 01:13 UTC
Valid To: 2025-05-29 21:00 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: 2025-05-29 01:15 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4975
Valid From: 2025-05-28 17:47 UTC
Now Valid Until: 2025-05-29 21:00 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: 2025-05-29 01:13 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-05-29 01:10 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: 2025-05-28 17:47 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-05-28 17:47 UTC
Valid To: 2025-05-29 09:00 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: 2025-05-28 05:02 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4973
Valid From: 2025-05-27 20:04 UTC
Now Valid Until: 2025-05-28 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: 2025-05-28 05:01 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-05-28 05:01 UTC
Valid To: 2025-05-28 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: 2025-05-27 20:32 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-05-27 20:32 UTC
Synoptic Period: 1800-2100 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: 2025-05-27 20:03 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-05-27 20:04 UTC
Valid To: 2025-05-28 09:00 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: 2025-05-26 21:17 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
May 27: None (Below G1) May 28: G1 (Minor) May 29: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: 2025-05-26 14:20 UTC
ALERT: Type II Radio Emission
Begin Time: 2025-05-26 13:36 UTC
Estimated Velocity: 1104 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.

Built 2025-05-29 10:37 from source