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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
14:41------
14:40------
14:39--0.68---
14:381.24520.80.85---
14:371.76500.11.48---
14:363.10531.61.38---
14:352.58522.51.14---
14:341.55506.70.85---
14:331.08506.7-0.10---
14:321.86531.5-1.95---
14:311.49535.3-2.22---
14:301.75544.9-2.14---
14:29---2.32---
14:281.77514.0-2.291.8514.0-2.3
14:272.08525.6-0.272.1525.6-0.3
14:261.89526.2-0.361.9526.2-0.4
14:25---0.31---0.3
14:241.71527.4-2.511.7527.4-2.5
14:231.90531.7-1.671.9531.7-1.7
14:222.36545.1-0.222.4545.1-0.2
14:211.76541.40.201.8541.40.2
14:201.33502.3-1.261.3502.3-1.3
14:191.56540.20.261.6540.20.3
14:182.54537.4-1.562.5537.4-1.6
14:172.24536.30.132.2536.30.1
14:161.53496.40.381.5496.40.4
14:152.05518.90.552.1518.90.5
14:142.22525.60.552.2525.60.5
14:132.24526.20.152.2526.20.1
14:121.82518.70.231.8518.70.2
14:111.32521.30.271.6521.40.3
14:101.84528.1-0.392.1528.2-0.4
14:091.66526.90.022.7523.30.0
14:082.19511.71.382.2511.71.4
14:071.18514.00.871.2514.00.9
14:061.40554.8-0.991.4554.8-1.0
14:051.88538.1-1.741.9538.1-1.7
14:042.35533.3-0.992.4533.3-1.0
14:031.71514.90.331.7514.90.3
14:022.68544.90.322.7544.90.3
14:011.53525.40.121.5525.40.1
14:001.53525.60.211.5525.60.2
13:591.81518.6-0.111.8518.6-0.1
13:581.71512.1-0.501.7512.1-0.5
13:571.81522.7-1.421.8522.7-1.4
13:561.49553.9-1.171.5553.9-1.2
13:550.99552.0-2.161.0552.0-2.2
13:540.65519.2-1.980.6519.2-2.0
13:531.01518.3-1.631.0518.3-1.6
13:521.83545.70.131.8545.70.1
13:510.67531.6-1.400.7531.6-1.4
13:500.66528.2-2.030.7528.2-2.0
13:490.83514.4-2.700.8514.4-2.7
13:482.20526.9-1.422.2526.9-1.4
13:47---0.84---0.8
13:461.87501.9-1.9501.9-
13:451.34495.3-1.3495.3-
13:444.24520.7-4.2520.7-
13:432.38512.11.492.6516.71.5
13:423.96516.61.224.1518.31.2
13:412.22516.50.862.2516.50.9
13:400.87532.9-1.070.9532.9-1.1
13:391.06541.3-2.551.1541.3-2.5
13:381.61536.8-2.831.6536.8-2.8
13:371.31536.6-1.881.8522.5-1.9
13:361.48502.8-1.111.5502.8-1.1
13:352.47512.8-0.042.5512.8-0.0
13:343.28522.51.643.3522.51.6
13:332.76517.71.762.8517.71.8
13:323.55491.32.023.6491.32.0
13:312.20511.72.332.2511.72.3
13:304.55510.72.274.6510.72.3
13:293.47521.21.853.5521.21.8
13:281.78496.91.571.8496.91.6
13:272.01506.81.372.0506.81.4
13:262.45512.71.382.5512.71.4
13:252.83518.01.322.8518.01.3
13:241.83506.40.921.8506.40.9
13:230.91501.30.390.9501.30.4
13:221.17524.8-1.271.2524.8-1.3
13:211.63557.2-2.241.6557.2-2.2
13:201.57575.2-3.331.6575.2-3.3
13:191.38581.7-3.571.4581.7-3.6
13:181.31572.6-3.491.3572.6-3.5
13:171.21566.8-3.071.2566.8-3.1
13:160.42523.1-1.990.4523.1-2.0
13:150.37520.4-0.4520.4-
13:140.82556.9-0.8556.9-
13:130.78554.4-3.930.8554.4-3.9
13:121.34565.1-4.011.3565.1-4.0
13:110.93562.4-3.161.4567.1-3.2
13:100.74559.1-3.650.7558.3-3.7
13:090.73563.6-3.700.7563.6-3.7
13:080.85560.4-3.660.9560.4-3.7
13:070.81545.2-3.630.7541.8-3.6
13:060.38534.9-2.660.6532.6-2.7
13:050.78542.8-2.600.8542.8-2.6
13:040.83551.8-2.960.8551.8-3.0
13:030.73555.9-3.140.7555.9-3.1
13:020.87559.8-3.730.9559.8-3.7
13:010.68551.9-4.200.7551.9-4.2
13:000.49542.9-4.130.5542.9-4.1
12:591.31566.0-4.121.3566.0-
12:581.73559.9-2.151.7559.9-2.1
12:570.72534.9-0.740.7534.9-0.7
12:560.96561.6-0.211.0561.6-0.2
12:551.37555.1-2.051.4555.2-2.0
12:541.46551.9-2.181.1562.7-2.2
12:530.74541.8-4.190.7541.8-4.2
12:520.83548.2-4.170.8548.2-4.2
12:510.91563.2-4.250.9563.2-4.2
12:500.91569.3-2.540.9569.3-2.5
12:490.73552.7-2.490.7552.7-2.5
12:480.39522.9-2.290.4522.9-2.3
12:470.70549.8-2.490.7549.8-2.5
12:460.85579.3-2.250.9579.3-2.2
12:450.67546.4-3.140.7546.4-3.1
12:440.67546.4-1.890.3520.2-1.9
12:430.67553.3-3.120.7553.3-3.1
12:421.18585.9-3.011.2585.9-3.0
Built 2026-05-18 14:42 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-2.82.3-0.4
velocity [km/s]491.3554.8524.3
density [cm-3]0.74.51.9
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)1069120
Maasi (MAS)12310124
Kilpisjärvi (KIL)13210119
Ivalo (IVA)108894
Muonio (MUO)1129108
Sodankylä (SOD)98899
Pello (PEL)86792
Oulujärvi (OUJ)45667
Mekrijärvi (MEK)28438
Hankasalmi (HAN)29447
Nurmijärvi (NUR)28544
Tartu (TAR)16334
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2026-05-18 14:32 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2026-05-18 05:00 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3687
Begin Time: 2026-05-16 17:40
Yesterday Maximum 2MeV Flux: 6118 pfu
Continued 2026-05-18 04: 59 by Forecaster User

Issue Time: 2026-05-17 21:16 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2026-05-17 20:50 UTC
Maximum Time: 2026-05-17 20:51 UTC
End Time: 2026-05-17 20:51 UTC
Peak Flux: 370 sfu
Duration: 1 minutes
Latest Penticton Noon Flux: 104 sfu
Comment

Issue Time: 2026-05-17 16:12 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
May 18: G1 (Minor) May 19: G1 (Minor) May 20: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment
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: 2026-05-17 08:40 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5341
Valid From: 2026-05-13T20:26:00
Now Valid Until: 2026-05-17 21:00
Warning Condition: Persistence
Extended 2026-05-17 08: 38 by Forecaster User
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2026-05-17 08:16 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3686
Begin Time: 2026-05-16 17:40
Yesterday Maximum 2MeV Flux: 1902 pfu
Continued 2026-05-17 08: 16 by Forecaster User

Issue Time: 2026-05-16 21:34 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
May 17: G1 (Minor) May 18: G1 (Minor) May 19: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment
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: 2026-05-16 18:14 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2236
Valid From: 2026-05-15T13:05:00
Now Valid Until: 2026-05-17 09:00
Warning Condition: Persistence
Extended 2026-05-16 18: 13 by WC 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: 2026-05-16 18:13 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5340
Valid From: 2026-05-13T20:26:00
Now Valid Until: 2026-05-17 09:00
Warning Condition: Persistence
Extended 2026-05-16 18: 12 by WC
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2026-05-16 18:04 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-16 17:59 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-16 17:53 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026-05-16 17:40 UTC
Station: GOES-19
Comment

Issue Time: 2026-05-16 16:58 UTC
ALERT: Type IV Radio Emission
Begin Time: 2026-05-16 16:05 UTC
Comment

Issue Time: 2026-05-16 16:37 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2026-05-16 16:06 UTC
Maximum Time: 2026-05-16 16:09 UTC
End Time: 2026-05-16 16:10 UTC
Peak Flux: 170 sfu
Duration: 4 minutes
Latest Penticton Noon Flux: 101 sfu
Comment: COR for end date.
COR for end date.

Issue Time: 2026-05-16 16:31 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2026-05-16 16:06 UTC
Maximum Time: 2026-05-16 16:09 UTC
End Time: 2026-05-17 16:10 UTC
Peak Flux: 170 sfu
Duration: 4 minutes
Latest Penticton Noon Flux: 101 sfu
Comment

Issue Time: 2026-05-16 11:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5339
Valid From: 2026-05-13T20:26:00
Now Valid Until: 2026-05-16 23:59
Warning Condition: Persistence
Extended 2026-05-16 11: 55 by Forecaster User
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2026-05-16 08:59 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-16 08:59 UTC
Synoptic Period: 0600-0900
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-16 08:45 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2235
Valid From: 2026-05-15T13:05:00
Now Valid Until: 2026-05-16 21:00
Warning Condition: Persistence
Extended 2026-05-16 08: 44 by Forecaster User 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: 2026-05-16 05:56 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-16 05:54 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 23:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2234
Valid From: 2026-05-15T13:05:00
Now Valid Until: 2026-05-16 09:00
Warning Condition: Persistence
Extended 2026-05-15 23: 55 by Forecaster User 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: 2026-05-15 22:15 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026-05-15 22:15 UTC
Synoptic Period: 2100-2400
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 22:02 UTC
WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026-05-15 22:01 UTC
Valid To: 2026-05-16 03:00 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 17:18 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 16:16 UTC
Estimate Velocity: 529 km/s
Comment

Issue Time: 2026-05-15 16:07 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-15 16:06 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 14:50 UTC
WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026-05-15 14:49 UTC
Valid To: 2026-05-15 21:00 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment
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: 2026-05-15 13:45 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 13:44 UTC
Estimate Velocity: 347 km/s
Comment

Issue Time: 2026-05-15 13:27 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-05-15 13:26 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 13:07 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-05-15 13:05 UTC
Valid To: 2026-05-15 23:59 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment
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: 2026-05-15 13:09 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5337
Valid From: 2026-05-13T20:26:00
Now Valid Until: 2026-05-16 12:00
Warning Condition: Persistence
Extended 2026-05-15 13: 09 by Forecaster User
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2026-05-15 13:00 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-05-15 13:00 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Comment
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2026-05-15 12:25 UTC
ALERT: Type II Radio Emission
Begin Time: 2026-05-15 12:25 UTC
Estimate Velocity: 486 km/s
Comment

Issue Time: 2026-05-15 11:58 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-05-15 11:57 UTC
Valid To: 2026-05-16 00:00 UTC
Warning Conditions: Onset
Comment
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Built 2026-05-18 11:27 from source