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SeadedLast update:
Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
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03:18---0.65---0.6
03:17---0.56---0.6
03:164.81598.5-0.344.8598.5-0.3
03:154.81-0.004.8--0.0
03:14---0.01---0.0
03:13---0.41---0.4
03:12---0.96---1.0
03:11---0.55---0.5
03:10---0.32---0.3
03:09---0.22---0.2
03:08---0.13---0.1
03:07--0.28--0.3
03:06---0.01---0.0
03:056.93596.0-0.356.9596.0-0.4
03:046.93596.0-1.026.9596.0-1.0
03:03---1.21---1.2
03:02---1.20---1.2
03:016.89--0.656.9--0.6
03:006.89581.3-1.616.9581.3-1.6
02:596.89--1.98---
02:58---1.92---
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02:47---0.20---
02:46---0.77---
02:453.47--1.04---
02:443.47649.5-0.79---
02:433.47--0.42---
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02:41---0.54---
02:405.67629.1-1.24---
02:395.67629.1-2.07---
02:38---2.12---
02:374.09625.7-1.57---
02:364.09625.7-0.90---
02:35---1.00---
02:34---0.85---
02:331.75608.5-0.75---
02:321.75608.5-1.18---
02:31---1.34---
02:30---1.95---
02:291.21--1.67---
02:281.21628.3-1.21---
02:271.21--0.43---
02:26---1.23---
02:25---2.53---
02:241.73609.3-3.01---
02:231.73609.3-2.87---
02:22---2.79---
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02:20---1.99---
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Built 2025-12-25 04:09 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)189--
Kilpisjärvi (KIL)212--
Ivalo (IVA)155--
Muonio (MUO)167--
Sodankylä (SOD)132--
Pello (PEL)123--
Oulujärvi (OUJ)47--
Mekrijärvi (MEK)22--
Hankasalmi (HAN)20--
Nurmijärvi (NUR)16--
Tartu (TAR)9--
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-12-25 04:02 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