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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
00:27------
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00:25--0.13---
00:24--0.49---
00:231.23629.7-3.25---
00:221.14613.5-2.53---
00:211.44626.8-2.46---
00:202.03622.61.53---
00:191.47632.12.30---
00:181.41636.41.07---
00:171.94644.71.59---
00:162.22642.02.46---
00:152.11637.52.56---
00:142.08638.72.96---
00:132.16636.72.22---
00:122.06631.01.45---
00:111.88629.11.24---
00:101.55631.51.90---
00:091.85609.81.55---
00:081.45600.61.40---
00:072.03601.5-0.572.0601.5-0.6
00:061.60606.3-0.251.6606.3-0.2
00:051.32609.7-0.861.3609.7-0.9
00:041.16617.7-0.701.2617.7-0.7
00:031.26620.9-3.071.3620.9-3.1
00:021.22619.1-3.461.2619.1-3.5
00:011.17617.7-2.941.2617.7-2.9
00:001.26613.2-3.011.3613.2-3.0
23:591.28611.5-2.461.3611.5-2.5
23:581.19615.6-2.551.2615.6-2.6
23:571.14619.0-3.281.1619.0-3.3
23:561.08624.4-3.381.1624.4-3.4
23:551.15622.6-3.361.2622.6-3.4
23:541.32617.1-3.221.3617.1-3.2
23:530.99620.1-3.231.0620.1-3.2
23:521.16622.5-3.291.2622.5-3.3
23:51---3.28---3.3
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22:380.58590.6-0.6590.6-
22:371.83609.0-0.061.8609.0-0.1
22:363.32633.30.263.3633.30.3
22:351.51607.60.611.5607.60.6
22:340.80582.70.840.8582.70.8
22:331.17598.5-0.111.2598.5-0.1
22:321.57624.6-1.301.6624.6-1.3
22:311.34626.1-0.541.3626.1-0.5
22:301.35623.5-0.931.4623.5-0.9
22:291.06619.6-1.861.1619.6-1.9
22:281.42634.2-2.091.4634.2-2.1
Built 2026-02-24 00:28 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)280--
Maasi (MAS)259--
Kilpisjärvi (KIL)239--
Ivalo (IVA)207--
Muonio (MUO)173--
Sodankylä (SOD)121--
Pello (PEL)104--
Oulujärvi (OUJ)29--
Mekrijärvi (MEK)21--
Hankasalmi (HAN)34--
Nurmijärvi (NUR)25--
Tartu (TAR)23--
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2026-02-24 00:17 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2026-02-23 22:05 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5268
Valid From: 2026-02-21 22:30 UTC
Now Valid Until: 2026-02-24 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: 2026-02-23 21:39 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-02-23 21:40 UTC
Valid To: 2026-02-24 06:00 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: 2026-02-23 11:34 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026-02-23 10:45 UTC
Station: GOES19


Issue Time: 2026-02-23 05:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2198
Valid From: 2026-02-22 21:54 UTC
Now Valid Until: 2026-02-23 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: 2026-02-23 05:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5267
Valid From: 2026-02-21 22:30 UTC
Now Valid Until: 2026-02-23 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: 2026-02-23 04:45 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-02-23 04:37 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: 2026-02-22 22:02 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-02-22 22:02 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: 2026-02-22 22:00 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5266
Valid From: 2026-02-21 22:30 UTC
Now Valid Until: 2026-02-23 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: 2026-02-22 21:54 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-02-22 21:54 UTC
Valid To: 2026-02-23 06:00 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: 2026-02-22 08:00 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2196
Valid From: 2026-02-22 04:25 UTC
Now Valid Until: 2026-02-22 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: 2026-02-22 08:00 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5265
Valid From: 2026-02-21 22:30 UTC
Now Valid Until: 2026-02-22 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: 2026-02-22 08:00 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2026-02-22 08:00 UTC
Valid To: 2026-02-22 15:00 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: 2026-02-22 07:40 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-02-22 07:40 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: 2026-02-22 05:03 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-02-22 05:02 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: 2026-02-22 04:25 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-02-22 04:25 UTC
Valid To: 2026-02-22 12:00 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: 2026-02-21 22:43 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-02-21 22:42 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: 2026-02-21 22:30 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-02-21 22:30 UTC
Valid To: 2026-02-22 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: 2026-02-21 09:53 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Feb 21: None (Below G1) Feb 22: None (Below G1) Feb 23: G1 (Minor)
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: 2026-02-20 23:40 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-02-20 23:40 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: 2026-02-20 23:27 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-02-20 23:27 UTC
Valid To: 2026-02-21 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 2026-02-23 22:07 from source