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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
21:50------
21:49------
21:48---0.05---
21:47---0.202.1489.5-0.2
21:462.57492.5-0.172.6492.5-0.2
21:453.03499.8-0.193.0499.8-0.2
21:441.96487.1-0.302.0487.1-0.3
21:431.59483.6-0.121.6483.6-0.1
21:422.41494.1-0.082.4494.1-0.1
21:412.13488.2-0.032.1488.2-0.0
21:401.76483.40.211.8483.40.2
21:392.56490.30.302.6490.30.3
21:383.31501.20.123.3501.20.1
21:372.47493.50.162.5493.50.2
21:361.13477.90.101.1477.90.1
21:352.82495.0-0.132.8495.0-0.1
21:343.62507.50.013.6507.50.0
21:332.67494.2-0.042.7494.2-0.0
21:322.77498.5-0.192.8498.5-0.2
21:312.31490.3-0.172.3490.3-0.2
21:302.12487.1-0.192.1487.1-0.2
21:292.10487.1-0.262.1487.1-0.3
21:282.77499.3-0.282.8499.3-0.3
21:273.17502.3-0.253.2502.3-0.2
21:263.09499.3-0.203.1499.3-0.2
21:252.69494.1-0.362.7494.1-0.4
21:242.80495.6-0.172.8495.6-0.2
21:232.06488.7-0.252.1488.7-0.3
21:223.41505.5-0.213.4505.5-0.2
21:212.49493.6-0.292.5493.6-0.3
21:203.10500.3-0.223.1500.3-0.2
21:193.06510.7-0.343.1510.7-0.3
21:180.71470.2-0.350.7470.2-0.4
21:171.92487.6-0.471.9487.6-0.5
21:161.89485.3-0.711.9485.3-0.7
21:152.68499.4-0.802.7499.4-0.8
21:141.61485.3-0.811.6485.3-0.8
21:131.56484.7-0.841.6484.7-0.8
21:122.50497.8-0.862.5497.8-0.9
21:111.77487.5-0.981.8487.5-1.0
21:101.11482.8-0.921.1482.8-0.9
21:099.10508.8-1.239.1508.8-1.2
21:0817.08528.7-0.9717.1528.7-1.0
21:073.37529.5-0.713.4529.5-0.7
21:061.57481.3-0.461.6481.3-0.5
21:05---0.92---0.9
21:042.61509.3-1.002.6509.3-1.0
21:030.52468.0-1.060.5468.0-1.1
21:020.52--1.210.5--1.2
21:012.14493.7-1.202.1493.7-1.2
21:003.29505.5-1.213.3505.5-1.2
20:592.42498.80.132.4498.80.1
20:581.56486.80.091.6486.80.1
20:57---0.85---0.8
20:56---1.45---1.4
20:551.86495.8-1.401.9495.8-1.4
20:541.79495.7-1.481.8495.7-1.5
20:531.92500.7-1.831.9500.7-1.8
20:522.05508.0-0.992.0508.0-1.0
20:511.53502.4-2.331.5502.4-2.3
20:502.09503.7-2.492.1503.7-2.5
20:491.78499.9-2.191.8499.9-2.2
20:481.03477.6-2.301.0477.6-2.3
20:471.73504.4-1.961.7504.4-2.0
20:461.42491.0-2.171.4491.0-2.2
20:451.68495.2-2.011.7495.2-2.0
20:441.73499.8-2.071.7499.8-2.1
20:431.85500.7-2.301.8500.7-2.3
20:422.27502.7-2.202.3502.7-2.2
20:411.58504.4-2.181.6504.4-2.2
20:401.18500.6-2.191.2500.6-2.2
20:391.22498.0-1.871.2498.0-1.9
20:381.06502.6-1.831.1502.6-1.8
20:371.14504.5-2.191.1504.5-2.2
20:361.57498.0-2.021.6498.0-2.0
20:351.72501.6-1.631.7501.6-1.6
20:341.91518.3-2.511.9518.3-2.5
20:331.56517.3-2.971.6517.3-3.0
20:321.08508.8-3.171.1508.8-3.2
20:311.13513.4-2.881.1513.4-2.9
20:301.87491.6-2.821.9491.6-2.8
20:291.97492.8-1.012.0492.8-1.0
20:282.04489.7-0.652.0489.7-0.6
20:272.78501.3-0.972.8501.3-1.0
20:261.82489.3-0.801.8489.3-0.8
20:251.49489.1-1.5489.1-
20:24---0.81---0.8
20:23---1.32---1.3
20:222.43498.2-1.852.4498.2-1.9
20:212.09496.9-1.972.1496.9-2.0
20:201.68500.9-0.941.7500.9-0.9
20:191.90510.5-2.091.9510.5-2.1
20:180.83485.8-1.890.8485.8-1.9
20:171.35491.6-2.761.4491.6-2.8
20:161.17495.5-2.271.2495.5-2.3
20:151.32509.2-2.131.3509.2-2.1
20:141.78519.6-1.711.8519.6-1.7
20:131.45509.1-2.331.5509.1-2.3
20:122.25517.1-2.982.2517.1-3.0
20:112.16501.9-2.642.2501.9-2.6
20:101.61497.4-1.511.6497.4-1.5
20:091.47496.8-1.321.5496.8-1.3
20:081.38499.5-2.841.4499.5-2.8
20:071.23501.5-3.001.2501.5-3.0
20:061.20500.7-2.471.2500.7-2.5
20:051.30499.1-1.891.3499.1-1.9
20:041.48496.7-1.341.5496.7-1.3
20:031.45497.9-1.571.5497.9-1.6
20:021.33503.6-1.741.3503.6-1.7
20:011.59513.1-1.571.6513.1-1.6
20:000.55482.8-0.960.6482.8-1.0
19:591.09507.6-0.821.1507.6-0.8
19:581.29500.0-1.691.3500.0-1.7
19:571.23496.1-1.811.2496.1-1.8
19:561.04488.7-1.621.0488.7-1.6
19:551.64495.1-1.451.6495.1-1.4
19:542.26505.4-1.252.3505.4-1.2
19:531.94497.3-1.261.9497.3-1.3
19:521.79492.4-1.191.8492.4-1.2
19:512.28498.9-0.682.3498.9-0.7
Built 2025-09-08 21:51 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-2.50.3-0.8
velocity [km/s]468.0529.5495.8
density [cm-3]0.517.12.5
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)7912336
Maasi (MAS)8210318
Kilpisjärvi (KIL)-11340
Ivalo (IVA)838280
Muonio (MUO)-7300
Sodankylä (SOD)626268
Pello (PEL)406245
Oulujärvi (OUJ)20494
Mekrijärvi (MEK)8336
Hankasalmi (HAN)7446
Nurmijärvi (NUR)10441
Tartu (TAR)9429
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-09-08 21:47 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2025-09-08 05:08 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-09-08 05:08 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: 2025-09-08 01:29 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-09-08 01:30 UTC
Valid To: 2025-09-08 23:59 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: 2025-09-07 18:01 UTC
CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 1060
Original Issue Time: 2025-09-05 21:12 UTC
Comment: Minor geomagnetic storm conditions are no longer expected to occur through the remainder of 07 Sep.
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: 2025-09-06 22:28 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5070
Valid From: 2025-09-06 02:35 UTC
Now Valid Until: 2025-09-07 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: 2025-09-06 16:45 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-09-06 16:42 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: 2025-09-06 15:29 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-09-06 15:30 UTC
Valid To: 2025-09-06 23:59 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: 2025-09-06 02:41 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-09-06 02:40 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: 2025-09-06 02:34 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-09-06 02:35 UTC
Valid To: 2025-09-06 23:59 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: 2025-09-05 21:12 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Sep 05: G1 (Minor) Sep 06: G1 (Minor) Sep 07: G1 (Minor)
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.

Built 2025-09-08 16:54 from source