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SeadedLast update:
Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
04:41------
04:40------
04:391.79553.9----
04:380.96531.9----
04:371.01536.5-0.45---
04:363.48554.2-0.45---
04:354.87561.9-0.82---
04:340.98538.20.32---
04:331.23542.0-0.53---
04:321.78550.5-1.04---
04:312.10555.6-0.43---
04:301.61548.3-0.32---
04:290.62538.80.07---
04:281.56562.6-1.48---
04:270.65554.3-2.080.7554.3-2.1
04:261.08555.2-2.141.1555.2-2.1
04:251.13557.8-1.871.1557.8-1.9
04:243.67560.7-1.103.7560.7-1.1
04:231.53552.2-1.301.5552.2-1.3
04:221.24552.9-1.281.2552.9-1.3
04:211.29555.3-1.741.3555.3-1.7
04:202.28555.0-2.372.3555.0-2.4
04:191.93560.1-1.921.9560.1-1.9
04:181.28560.1-1.531.3560.1-1.5
04:171.28554.5-1.221.3554.5-1.2
04:161.25558.8-0.611.2558.8-0.6
04:151.27568.1-1.671.3568.1-1.7
04:141.13558.0-1.651.1558.0-1.6
04:130.97538.1-1.291.0538.1-1.3
04:121.43566.7-0.691.4566.7-0.7
04:112.53582.7-1.042.5582.7-1.0
04:101.94586.2-0.991.9586.2-1.0
04:090.59533.0-0.800.6533.0-0.8
04:080.94548.4-0.970.9548.4-1.0
04:070.94541.7-1.370.9541.7-1.4
04:061.02547.1-1.901.0547.1-1.9
04:052.95543.0-1.922.9543.0-1.9
04:041.97546.0-1.532.0546.0-1.5
04:030.95548.2-0.610.9548.2-0.6
04:020.96547.3-1.021.0547.3-1.0
04:011.30546.3-0.781.3546.3-0.8
04:001.30546.3-0.481.3546.3-0.5
03:591.39559.0-1.4559.0-
03:581.66565.6-0.081.7565.6-0.1
03:571.46563.70.051.5563.70.1
03:561.81560.80.711.8560.80.7
03:551.72556.80.441.7556.80.4
03:541.66575.20.791.7575.20.8
03:530.89561.91.950.9561.91.9
03:520.90541.82.340.9541.82.3
03:511.12548.9-0.421.1548.9-0.4
03:501.25553.4-1.061.3553.4-1.1
03:491.04552.3-0.961.0552.3-1.0
03:481.10557.3-1.141.1557.3-1.1
03:471.15558.6-1.321.1558.6-1.3
03:461.16560.5-1.431.2560.5-1.4
03:452.54561.1-1.172.5561.1-1.2
03:443.11553.6-0.863.1553.6-0.9
03:431.11548.9-0.551.1548.9-0.6
03:421.23554.4-1.171.2554.4-1.2
03:411.24558.1-0.891.2558.1-0.9
03:400.57535.6-0.890.6535.6-0.9
03:390.96549.4-0.671.0549.4-0.7
03:381.64550.0-0.331.6550.0-0.3
03:371.63566.6-0.451.6566.6-0.5
03:360.86529.60.240.9529.60.2
03:351.13554.71.921.1554.71.9
03:341.10553.1-0.201.1553.1-0.2
03:331.21567.4-0.171.2567.4-0.2
03:320.92557.5-2.230.9557.5-2.2
03:310.73557.8-2.080.7557.8-2.1
03:302.38569.5-2.522.4569.5-2.5
03:294.02573.4-2.984.0573.4-3.0
03:280.70531.50.380.7531.50.4
03:271.01536.20.841.0536.20.8
03:261.65546.00.341.7546.00.3
03:251.45544.10.231.5544.10.2
03:241.89551.00.911.9551.00.9
03:230.95536.31.160.9536.31.2
03:222.26561.31.042.3561.31.0
03:211.12542.00.701.1542.00.7
03:201.26550.50.811.3550.50.8
03:191.15549.20.831.1549.20.8
03:181.86558.80.881.9558.80.9
03:171.61553.40.171.6553.40.2
03:161.22547.90.511.2547.90.5
03:151.45550.80.871.5550.80.9
03:141.86555.90.501.9555.90.5
03:131.63553.30.601.6553.30.6
03:121.04542.60.291.0542.60.3
03:111.22540.20.371.2540.20.4
03:101.99553.0-0.682.0553.0-0.7
03:091.84550.80.701.8550.80.7
03:082.18561.10.552.2561.10.6
03:071.50546.60.871.5546.60.9
03:061.58550.20.461.6550.20.5
03:053.25553.60.393.3553.60.4
03:042.03563.90.762.0563.90.8
03:031.58557.11.141.6557.11.1
03:021.69574.11.171.7574.11.2
03:011.60565.40.861.6565.40.9
03:001.95568.31.422.0568.31.4
02:592.00566.32.162.0566.32.2
02:581.30561.42.071.3561.42.1
02:570.93560.11.510.9560.11.5
02:561.16557.60.091.2557.60.1
02:550.37523.0-1.570.4523.0-1.6
02:540.50528.2-1.630.5528.2-1.6
02:530.95545.5-1.380.9545.5-1.4
02:520.96545.7-1.551.0545.7-1.5
02:510.84545.0-1.990.8545.0-2.0
02:500.55528.7-2.140.6528.7-2.1
02:490.82534.3-1.620.8534.3-1.6
02:480.88539.2-1.020.9539.2-1.0
02:470.94543.6-0.830.9543.6-0.8
02:460.95544.0-1.211.0544.0-1.2
02:450.91538.8-1.480.9538.8-1.5
02:441.01541.2-1.391.0541.2-1.4
02:430.98542.3-1.301.0542.3-1.3
02:420.82540.1-1.360.8540.1-1.4
Built 2025-05-19 04:42 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-3.02.3-0.9
velocity [km/s]529.6586.2555.2
density [cm-3]0.64.01.4
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)16915209
Maasi (MAS)17416216
Kilpisjärvi (KIL)19217226
Ivalo (IVA)12712161
Muonio (MUO)13411152
Sodankylä (SOD)10311132
Pello (PEL)10310129
Oulujärvi (OUJ)63764
Mekrijärvi (MEK)33529
Hankasalmi (HAN)33537
Nurmijärvi (NUR)25634
Tartu (TAR)14424
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-05-19 04:32 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2025-05-18 23:54 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4969
Valid From: 2025-05-16 22:55 UTC
Now Valid Until: 2025-05-19 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: 2025-05-18 17:21 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025-05-18 17:05 UTC
Station: GOES19


Issue Time: 2025-05-18 14:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4968
Valid From: 2025-05-16 22:55 UTC
Now Valid Until: 2025-05-18 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: 2025-05-18 08:35 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-18 08:34 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: 2025-05-17 21:06 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4967
Valid From: 2025-05-16 22:55 UTC
Now Valid Until: 2025-05-18 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: 2025-05-17 20:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2044
Valid From: 2025-05-17 00:50 UTC
Now Valid Until: 2025-05-18 12:00 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: 2025-05-17 11:52 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2043
Valid From: 2025-05-17 00:50 UTC
Now Valid Until: 2025-05-17 21:00 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: 2025-05-17 11:52 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 580
Valid From: 2025-05-17 00:52 UTC
Now Valid Until: 2025-05-17 18:00 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: 2025-05-17 11:25 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-17 11:22 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: 2025-05-17 05:07 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-17 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: 2025-05-17 00:54 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025-05-17 00:54 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: 2025-05-17 00:53 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-05-17 00:52 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: 2025-05-17 00:52 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025-05-17 00:52 UTC
Valid To: 2025-05-17 12:00 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: 2025-05-17 00:51 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-05-17 00:50 UTC
Valid To: 2025-05-17 15:00 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: 2025-05-16 23:36 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025-05-16 23:31 UTC
Synoptic Period: 2100-2400 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: 2025-05-16 22:56 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-05-16 22:55 UTC
Valid To: 2025-05-17 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: 2025-05-16 19:00 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
May 17: None (Below G1) May 18: G1 (Minor) May 19: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Coronal Hole High Speed Stream influences will likely lead to G1 storm potential 18-19 May.
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: 2025-05-16 07:42 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025-05-16 07:42 UTC
Valid To: 2025-05-16 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 2025-05-19 02:29 from source