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SeadedLast update:
Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
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01:46------1.3
01:45------1.3
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01:41------1.0
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01:37------
01:36------0.7
01:35---2.7594.1-0.3
01:34------1.1
01:33------0.8
01:32---1.5595.3-0.9
01:31---1.5595.3-0.7
01:30---0.23---0.2
01:29---0.571.5624.6-0.6
01:281.53624.6-0.711.5624.6-0.7
01:27---0.64---0.6
01:26--0.14--0.1
01:255.16-0.165.2-0.2
01:245.16609.60.095.2609.60.1
01:235.16-0.005.2-0.0
01:22---0.74---0.7
01:21---1.06---1.1
01:201.61613.2-0.931.6613.2-0.9
01:191.61613.2-0.751.6613.2-0.8
01:18---1.06---1.1
01:17---1.04---1.0
01:161.69600.4-0.971.7600.4-1.0
01:151.69600.4-0.971.7600.4-1.0
01:14---0.96---1.0
01:134.41618.9-1.294.4618.9-1.3
01:124.41618.9-1.224.4618.9-1.2
01:11---1.35---1.3
01:10---1.58---1.6
01:092.02--1.282.0--1.3
01:082.02625.6-1.042.0625.6-1.0
01:072.02--0.932.0--0.9
01:06---1.19---1.2
01:05---0.72---0.7
01:042.51614.7-0.712.5614.7-0.7
01:032.51614.7-0.372.5614.7-0.4
01:02---0.18---0.2
01:01---0.49---0.5
01:002.24604.6-0.422.2604.6-0.4
00:592.24604.6-0.902.2604.6-0.9
00:58---0.67---0.7
00:57---1.31---1.3
00:56---0.97---1.0
00:55---0.56---0.6
00:54--0.42--0.4
00:531.93-0.171.9-0.2
00:521.93633.60.411.9633.60.4
00:511.93-0.251.9-0.2
00:50--0.39--0.4
00:49--0.39--0.4
00:483.37641.40.463.4641.40.5
00:473.37641.40.723.4641.40.7
00:46--0.59--0.6
00:45---0.16---0.2
00:441.61637.9-0.951.6637.9-0.9
00:431.61637.9-1.361.6637.9-1.4
00:42---1.41---1.4
00:41---1.53---1.5
00:401.89630.0-1.311.9630.0-1.3
00:391.89630.0-1.391.9630.0-1.4
00:38---1.55---1.5
00:371.54--1.641.5--1.6
00:361.54622.9-1.701.5622.9-1.7
00:351.54--1.271.5--1.3
00:34---0.73---0.7
00:33---0.60---0.6
00:321.76632.30.291.8632.30.3
00:311.76632.30.171.8632.30.2
00:30--0.25--0.2
00:29--0.21--0.2
Built 2025-12-25 02:29 from source

No recent solar wind parameters by NOAA available.
Forecast cannot be given.

Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)179--
Maasi (MAS)181--
Kilpisjärvi (KIL)196--
Ivalo (IVA)154--
Muonio (MUO)151--
Sodankylä (SOD)99--
Pello (PEL)83--
Oulujärvi (OUJ)37--
Mekrijärvi (MEK)17--
Hankasalmi (HAN)19--
Nurmijärvi (NUR)16--
Tartu (TAR)10--
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-12-25 02:17 from source
Issue Time: 2025-12-24 20:52 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5196
Valid From: 2025-12-21 02:40 UTC
Now Valid Until: 2025-12-25 12:00 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: 2025-12-24 08:49 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2163
Valid From: 2025-12-22 14:07 UTC
Now Valid Until: 2025-12-24 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: 2025-12-24 08:48 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5195
Valid From: 2025-12-21 02:40 UTC
Now Valid Until: 2025-12-24 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: 2025-12-24 05:06 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3582
Begin Time: 2025-12-21 14:25 UTC
Yesterday Maximum 2MeV Flux: 5557 pfu

Issue Time: 2025-12-23 23:08 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2162
Valid From: 2025-12-22 14:07 UTC
Now Valid Until: 2025-12-24 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: 2025-12-23 23:07 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5194
Valid From: 2025-12-21 02:40 UTC
Now Valid Until: 2025-12-24 12:00 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: 2025-12-23 14:09 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2161
Valid From: 2025-12-22 14:07 UTC
Now Valid Until: 2025-12-23 23:59 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: 2025-12-23 09:02 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3581
Begin Time: 2025-12-21 14:25 UTC
Yesterday Maximum 2MeV Flux: 1882 pfu

Issue Time: 2025-12-23 05:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2160
Valid From: 2025-12-22 14:07 UTC
Now Valid Until: 2025-12-23 15:00 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: 2025-12-22 23:54 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2159
Valid From: 2025-12-22 14:07 UTC
Now Valid Until: 2025-12-23 06:00 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: 2025-12-22 17:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5193
Valid From: 2025-12-21 02:40 UTC
Now Valid Until: 2025-12-23 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: 2025-12-22 15:00 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3580
Begin Time: 2025-12-21 14:25 UTC
Yesterday Maximum 2MeV Flux: 1566 pfu

Issue Time: 2025-12-22 14:10 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-12-22 14:10 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: 2025-12-22 14:07 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-12-22 14:07 UTC
Valid To: 2025-12-22 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.

Built 2025-12-25 02:27 from source