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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
23:43------
23:42------
23:41------
23:401.73532.1-2.41---
23:391.84531.1-1.07---
23:381.69533.3-1.31---
23:371.67534.7-1.21---
23:361.54547.6-2.12---
23:351.84541.7-2.29---
23:342.14542.2-1.90---
23:331.68538.40.52---
23:321.98537.9-0.53---
23:311.97541.4-1.01---
23:301.96543.9-0.46---
23:292.03541.9-0.62---
23:282.09542.5-1.33---
23:272.02543.3-1.632.0543.3-1.6
23:261.93540.0-1.881.9540.0-1.9
23:251.91538.9-1.321.9538.9-1.3
23:241.93541.7-1.541.9541.7-1.5
23:231.86540.1-2.041.9540.1-2.0
23:221.41541.5-1.871.4541.5-1.9
23:211.45546.1-2.621.5546.1-2.6
23:201.43557.7-2.821.4557.7-2.8
23:191.45558.5-2.361.5558.5-2.4
23:181.38560.3-1.911.4560.3-1.9
23:171.74556.1-1.861.7556.1-1.9
23:161.37555.2-2.991.4555.2-3.0
23:151.20554.0-3.441.2554.0-3.4
23:141.37562.2-3.591.4562.2-3.6
23:131.43560.5-4.021.4560.5-4.0
23:121.26561.5-4.231.3561.5-4.2
23:111.33558.3-4.051.3558.3-4.1
23:101.44552.8-4.081.4552.8-4.1
23:091.42556.3-2.161.4556.3-2.2
23:081.49561.1-2.051.5561.1-2.1
23:071.34563.6-3.281.3563.6-3.3
23:061.50568.8-3.491.5568.8-3.5
23:051.85541.8-4.061.9541.8-4.1
23:041.86542.1-0.641.9542.1-0.6
23:032.17550.80.272.2550.80.3
23:021.44548.70.081.4548.70.1
23:011.91546.7-0.121.9546.7-0.1
23:001.54542.90.081.5542.90.1
22:591.58540.3-0.87---0.9
22:581.82543.5-0.921.8543.5-0.9
22:571.58547.6-0.611.6547.6-0.6
22:561.74552.6-0.961.7552.6-1.0
22:551.77555.5-0.751.8555.5-0.8
22:541.65546.8-1.031.7546.8-1.0
22:531.78535.4-0.151.8535.4-0.2
22:521.80538.7-0.311.8538.7-0.3
22:511.96542.1-0.842.0542.1-0.8
22:501.86532.90.281.9532.90.3
22:491.62532.20.291.6532.20.3
22:481.62530.00.011.6530.00.0
22:471.72533.5-0.081.7533.5-0.1
22:461.91532.3-0.051.9532.3-0.1
22:451.71532.8-0.021.7532.8-0.0
22:441.76530.9-0.191.8530.9-0.2
22:431.54531.90.221.5531.90.2
22:421.45532.40.011.5532.40.0
22:411.18536.70.461.2536.70.5
22:400.97541.00.771.0541.00.8
22:390.88544.41.070.9544.41.1
22:380.96543.91.261.0543.91.3
22:370.99544.30.291.0544.30.3
22:360.77550.60.690.8550.60.7
22:350.83548.70.740.8548.70.7
22:341.02541.70.581.0541.70.6
22:330.96543.80.731.0543.80.7
22:32--0.82--0.8
22:31--0.99--1.0
22:300.77548.01.180.8548.01.2
22:290.94543.81.160.9543.81.2
22:280.94543.21.080.9543.21.1
22:270.74531.01.080.7531.01.1
22:260.98537.70.921.0537.70.9
22:251.19537.51.211.2537.51.2
22:241.23535.91.471.2535.91.5
22:231.24537.21.821.2537.21.8
22:221.40534.91.491.4534.91.5
22:211.65532.81.411.6532.81.4
22:201.70536.40.701.7536.40.7
22:191.76539.91.351.8539.91.3
22:182.17541.31.192.2541.31.2
22:171.66537.41.261.7537.41.3
22:161.66537.51.371.7537.51.4
22:151.46539.31.291.5539.31.3
22:141.36532.61.311.4532.61.3
22:131.33536.10.911.3536.10.9
22:121.33536.50.861.3536.50.9
22:110.66557.02.050.7557.02.1
22:100.60565.82.190.6565.82.2
22:090.64561.62.040.6561.62.0
22:081.26546.31.551.3546.31.5
22:071.59539.21.031.6539.21.0
22:061.50539.21.931.5539.21.9
22:051.20547.41.221.2547.41.2
22:040.67564.81.590.7564.81.6
22:030.71567.13.820.7567.13.8
22:02--3.58--3.6
22:01------
22:00--3.18--3.2
21:59------
21:58--1.18--1.2
21:570.73559.72.290.7559.72.3
21:561.11544.32.931.1544.32.9
21:551.31536.91.031.3536.91.0
21:541.24538.5-0.091.2538.5-0.1
21:531.28538.9-0.101.3538.9-0.1
21:521.27538.9-0.111.3538.9-0.1
21:511.23547.3-0.041.2547.3-0.0
21:501.39551.1-1.561.4551.1-1.6
21:491.54544.7-3.471.5544.7-3.5
21:481.52543.6-1.911.5543.6-1.9
21:471.65547.3-2.841.6547.3-2.8
21:461.48554.7-3.471.5554.7-3.5
21:451.69556.7-3.691.7556.7-3.7
21:441.74557.2-3.891.7557.2-3.9
Built 2026-02-24 23:44 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-4.21.3-1.0
velocity [km/s]530.0568.8546.2
density [cm-3]0.82.21.5
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)16832388
Maasi (MAS)15932427
Kilpisjärvi (KIL)13830421
Ivalo (IVA)12118416
Muonio (MUO)10318394
Sodankylä (SOD)13914390
Pello (PEL)12312348
Oulujärvi (OUJ)707226
Mekrijärvi (MEK)29453
Hankasalmi (HAN)23581
Nurmijärvi (NUR)18554
Tartu (TAR)10437
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2026-02-24 23:32 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2026-02-24 11:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5269
Valid From: 2026-02-21 22:30 UTC
Now Valid Until: 2026-02-24 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: 2026-02-24 05:02 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3632
Begin Time: 2026-02-23 10:45 UTC
Yesterday Maximum 2MeV Flux: 4958 pfu

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 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 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 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.

Built 2026-02-24 17:56 from source