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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
14:41------
14:40------
14:39------
14:38------
14:372.18561.01.08---
14:362.10553.2-4.55---
14:352.11553.1-3.46---
14:342.22551.50.61---
14:332.15553.70.69---
14:322.66554.74.13---
14:312.39546.14.11---
14:302.39552.23.53---
14:291.78545.13.62---
14:282.03539.70.23---
14:272.38546.22.212.4546.2-
14:262.41550.72.262.4550.72.3
14:252.34544.41.712.3544.41.7
14:242.42536.12.532.4536.12.5
14:232.67535.22.652.7535.22.6
14:222.53530.52.032.5530.52.0
14:211.73519.81.851.7519.81.8
14:201.90552.1-0.181.9552.1-0.2
14:192.08550.0-1.852.1550.0-1.9
14:181.74563.7-1.351.7563.7-1.3
14:171.40498.1-2.341.4498.1-2.3
14:161.57550.2-0.361.6550.2-0.4
14:152.08569.3-2.842.1569.3-2.8
14:141.55569.3-2.351.6569.3-2.4
14:130.90515.9-1.860.9515.9-1.9
14:120.90534.6-4.320.9534.6-4.3
14:110.84553.8-4.550.8553.8-4.6
14:100.87556.6-4.600.9556.6-4.6
14:090.96535.0-6.201.0535.0-6.2
14:080.98526.2-4.881.0526.2-4.9
14:071.01546.1-5.001.0546.1-5.0
14:061.02546.8-5.101.0546.8-5.1
14:051.02551.0-5.681.0551.0-5.7
14:040.96530.0-4.871.0530.0-4.9
14:030.91553.1-3.230.9553.1-3.2
14:020.91553.1-3.700.9553.1-3.7
14:010.80555.6-3.710.8555.6-3.7
14:002.05553.5-2.132.0553.5-2.1
13:590.41485.5-1.150.4485.5-1.1
13:580.96546.8-7.411.0546.8-7.4
13:572.68565.3-5.002.7565.3-5.0
13:562.64547.13.702.6547.13.7
13:551.40553.6-0.241.4553.6-0.2
13:540.98562.1-6.751.0562.1-6.7
13:530.87555.7-7.460.9555.7-7.5
13:520.61544.0-7.000.6544.0-7.0
13:510.80537.1-6.230.8537.1-6.2
13:501.54552.9-6.001.5552.9-6.0
13:492.47576.2-4.502.5576.2-4.5
13:481.70542.2-0.061.7542.2-0.1
13:471.18568.1-0.391.2568.1-0.4
13:462.01560.42.722.0560.42.7
13:452.74557.5-0.472.7557.5-0.5
13:442.34544.31.492.3544.31.5
13:431.89539.4-2.211.9539.4-2.2
13:422.26597.2-4.582.3597.2-4.6
13:413.09636.40.713.1636.40.7
13:403.09582.91.163.1582.91.2
13:393.95583.5-0.444.0583.5-0.4
13:382.76571.7-8.462.8571.7-8.5
13:371.69534.8-6.991.7534.8-7.0
13:362.22517.8-2.842.2517.8-2.8
13:352.37524.3-0.522.4524.3-0.5
13:342.42548.61.192.4548.61.2
13:332.48556.11.382.5556.11.4
13:322.35564.5-3.252.4564.5-3.3
13:31---4.08---4.1
13:300.47--0.980.5--1.0
13:290.47484.7-0.850.5484.7-0.9
13:281.48571.1-0.651.5571.1-0.6
13:270.99527.6-3.881.0527.6-3.9
13:261.05550.7-5.241.0550.7-5.2
13:251.19552.0-4.651.2552.0-4.7
13:242.24567.5-2.472.2567.5-2.5
13:232.42568.2-1.212.4568.2-1.2
13:222.23564.00.032.2564.00.0
13:211.38570.8-0.821.4570.8-0.8
13:201.44581.5-5.571.4581.5-5.6
13:192.68590.60.692.7590.60.7
13:181.94597.6-2.011.9597.6-2.0
13:170.70592.0-5.510.7592.0-5.5
13:161.22577.3-4.291.2577.3-4.3
13:151.63595.3-3.051.6595.3-3.0
13:140.95583.2-3.491.0583.2-3.5
13:131.08571.8-4.401.1571.8-4.4
13:120.98585.6-5.881.0585.6-5.9
13:111.93656.6-4.521.9656.6-4.5
13:100.77617.0-8.810.8617.0-8.8
13:091.75642.9-9.311.8642.9-9.3
13:081.54638.4-9.861.5638.4-9.9
13:071.12620.8-10.981.1620.8-11.0
13:061.25570.5-5.751.3570.5-5.8
13:051.87563.7-4.521.9563.7-4.5
13:042.00593.1-2.852.0593.1-2.9
13:031.57591.1-0.731.6591.1-0.7
13:021.74574.2-2.511.7574.2-2.5
13:012.06534.2-2.512.1534.2-2.5
13:002.65558.8-2.042.7558.8-2.0
12:591.92575.82.091.9575.82.1
12:58--5.48--5.5
12:57--2.72--2.7
12:563.60631.92.243.6631.92.2
12:553.72604.35.923.7604.35.9
12:540.84490.55.200.8490.55.2
12:531.36489.50.891.4489.50.9
12:522.45541.2-1.752.4541.2-1.7
12:512.55559.2-0.572.5559.2-0.6
12:501.99545.40.622.0545.40.6
12:491.64527.20.921.6527.20.9
12:481.72525.7-1.781.7525.7-1.8
12:471.73540.8-2.641.7540.8-2.6
12:461.46547.5-2.491.5547.5-2.5
12:451.35537.0-4.431.4537.0-4.4
12:441.29534.4-5.141.3534.4-5.1
12:430.82558.3-4.930.8558.3-4.9
12:421.74542.6-5.201.7542.6-5.2
Built 2025-05-02 14:42 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-8.53.7-2.3
velocity [km/s]484.7636.4548.6
density [cm-3]0.44.01.7
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)13819189
Maasi (MAS)12218176
Kilpisjärvi (KIL)12418181
Ivalo (IVA)11413188
Muonio (MUO)12114179
Sodankylä (SOD)12313173
Pello (PEL)14112179
Oulujärvi (OUJ)15410124
Mekrijärvi (MEK)68684
Hankasalmi (HAN)49771
Nurmijärvi (NUR)61866
Tartu (TAR)41553
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-05-02 14:32 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2025-05-02 14:40 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-02 14:35 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: 2025-05-02 13:44 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025-05-02 13:30 UTC
Station: GOES19


Issue Time: 2025-05-02 08:31 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2028
Valid From: 2025-05-01 13:50 UTC
Now Valid Until: 2025-05-02 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: 2025-05-02 08:30 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4945
Valid From: 2025-05-01 03:43 UTC
Now Valid Until: 2025-05-02 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: 2025-05-02 05:07 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-02 04:59 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: 2025-05-02 02:06 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025-05-02 02:06 UTC
Valid To: 2025-05-02 09:00 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: 2025-05-02 01:55 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-02 01:55 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: 2025-05-01 23:53 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4944
Valid From: 2025-05-01 03:43 UTC
Now Valid Until: 2025-05-02 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: 2025-05-01 23:48 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2027
Valid From: 2025-05-01 13:50 UTC
Now Valid Until: 2025-05-02 09:00 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: 2025-05-01 23:40 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-01 23:39 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: 2025-05-01 20:23 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-01 20:22 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: 2025-05-01 17:50 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
May 02: G1 (Minor) May 03: None (Below G1) May 04: 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: 2025-05-01 13:52 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4943
Valid From: 2025-05-01 03:43 UTC
Now Valid Until: 2025-05-02 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: 2025-05-01 13:52 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-05-01 13:50 UTC
Valid To: 2025-05-01 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: 2025-05-01 10:40 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4942
Valid From: 2025-05-01 03:43 UTC
Now Valid Until: 2025-05-01 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: 2025-05-01 05:38 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-05-01 05:32 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: 2025-05-01 03:43 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-05-01 03:43 UTC
Valid To: 2025-05-01 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: 2025-04-30 11:30 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4940
Valid From: 2025-04-30 02:25 UTC
Now Valid Until: 2025-04-30 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: 2025-04-30 03:00 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-04-30 02:59 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: 2025-04-30 02:25 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-04-30 02:25 UTC
Valid To: 2025-04-30 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 2025-05-02 14:41 from source