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SeadedLast update:
Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
16:34------
16:33------
16:32------
16:317.17457.0----
16:307.09457.24.78---
16:297.94461.74.61---
16:2811.63473.95.11---
16:2711.94477.66.10---
16:2611.98479.16.37---
16:2511.80478.26.25---
16:247.18458.14.48---
16:237.34458.34.98---
16:227.05457.04.11---
16:217.21457.64.16---
16:2012.51478.06.08---
16:1912.02478.86.29---
16:1812.14483.66.94---
16:1712.08485.66.81---
16:1611.95476.75.87---
16:1511.48476.55.67---
16:148.93466.74.99---
16:136.63449.71.86---
16:1211.14477.53.45---
16:1112.16483.86.86---
16:1012.44484.46.58---
16:099.39470.24.23---
16:087.56458.51.77---
16:079.98468.32.25---
16:0611.91475.62.51---
16:059.26472.22.24---
16:048.14462.92.37---
16:037.54459.91.88---
16:029.09463.51.75---
16:018.23459.31.71---
16:007.94456.02.16---
15:597.16453.12.25---
15:586.97450.92.27---
15:577.58450.81.75---
15:566.80449.91.24---
15:556.92449.61.21---
15:546.90449.81.46---
15:537.28450.41.62---
15:526.93450.01.70---
15:517.55456.12.52---
15:508.55465.30.51---
15:496.79450.01.72---
15:486.74452.72.18---
15:477.25456.22.93---
15:467.57459.04.051.9442.0-1.9
15:457.20454.63.391.9445.2-3.3
15:446.88452.02.252.0451.3-4.2
15:436.81452.12.552.0453.6-5.3
15:427.54458.82.882.0452.4-5.1
15:417.43461.34.011.9455.3-4.9
15:407.67460.73.491.7458.9-5.4
15:398.73468.94.301.6456.8-5.0
15:387.40460.73.851.1457.2-4.8
15:379.54470.94.110.9460.5-4.3
15:367.86461.53.701.1454.2-4.5
15:3510.69472.93.581.2447.0-4.9
15:3411.84476.34.401.1459.8-4.2
15:3311.99477.04.791.1468.4-5.1
15:3211.52477.22.631.3466.2-5.2
15:3111.70491.5-1.921.0462.5-4.9
15:3011.74490.9-2.040.8455.4-4.5
15:2911.67494.1-2.271.1452.0-4.7
15:2811.20476.7-1.112.2451.4-4.1
15:2711.69477.2-0.362.5450.8-3.9
15:2611.79478.60.282.1455.9-4.4
15:2511.49478.50.151.7454.7-4.2
15:249.46467.6-0.191.2445.8-4.6
15:237.75459.80.71---5.2
15:227.25456.20.312.4471.5-3.2
15:217.28456.40.482.0463.9-3.7
15:207.49457.20.840.6428.2-4.4
15:197.32454.91.211.7447.8-3.6
15:187.47455.31.263.4467.3-3.0
15:177.59455.40.132.9475.2-5.2
15:167.36457.60.781.7471.8-5.9
15:157.18452.80.931.4471.9-5.5
15:147.04454.70.971.0475.8-5.5
15:137.30459.10.711.6458.8-4.4
15:1210.96474.41.391.7444.0-1.6
15:1111.72482.5-1.481.1444.5-1.1
15:1012.00496.2-3.550.7447.7-2.3
15:0911.87480.11.970.8447.8-3.1
15:0812.18485.65.611.0455.2-2.5
15:0712.02489.34.241.2463.5-4.1
15:0611.71476.62.071.0456.2-3.9
15:0511.86482.40.360.9461.0-4.0
15:0411.75497.0-2.861.4471.0-4.6
15:0311.44480.73.712.1472.3-4.6
15:0211.46480.55.642.2456.2-4.9
15:0110.24474.42.701.7474.9-3.2
15:0011.64478.54.100.8459.1-2.7
14:5911.60478.23.771.0473.1-3.9
14:5812.22480.82.561.3445.4-3.3
14:5711.90479.72.062.0442.9-0.9
14:5611.45481.12.251.0474.5-0.1
14:5511.48478.72.410.3496.80.1
14:5411.07478.02.610.2486.90.0
14:5311.81481.43.740.2476.50.4
14:5211.92476.33.150.2457.40.4
14:5112.42479.63.790.1415.6-0.1
14:5012.08480.02.68---0.6
14:4912.41478.72.790.2489.6-0.1
14:487.37463.02.450.2490.3-0.8
14:477.46464.22.710.1496.3-1.6
14:469.69469.82.390.1486.9-1.7
14:4511.83477.52.660.1505.4-3.0
14:4411.92477.82.864.1446.8-2.9
14:4311.65476.82.332.2462.4-4.1
14:4211.88477.71.851.4454.7-4.6
14:4111.95479.73.001.2456.6-4.8
14:4011.71479.04.560.8460.1-4.6
14:3911.69481.14.570.6468.7-3.8
14:3812.03480.45.810.9461.5-2.3
14:3712.27480.55.751.4452.8-2.6
14:3612.19478.45.251.8458.9-4.2
14:3512.47480.25.521.7456.9-4.4
Built 2025-02-18 16:35 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-2.36.93.1
velocity [km/s]449.6494.1465.9
density [cm-3]6.612.59.1
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)227128
Maasi (MAS)258133
Kilpisjärvi (KIL)279137
Ivalo (IVA)218150
Muonio (MUO)247123
Sodankylä (SOD)227122
Pello (PEL)226106
Oulujärvi (OUJ)20551
Mekrijärvi (MEK)13548
Hankasalmi (HAN)13442
Nurmijärvi (NUR)14446
Tartu (TAR)10534
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2025-02-18 16:32 from source
Issue Time: 2025-02-18 08:55 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4841
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-18 15:00 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: 2025-02-17 23:47 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4840
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-18 09:00 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: 2025-02-17 11:24 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4839
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-17 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: 2025-02-17 04:44 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4838
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-17 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: 2025-02-17 03:47 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3424
Begin Time: 2025-02-11 14:05 UTC
Yesterday Maximum 2MeV Flux: 3934 pfu

Issue Time: 2025-02-16 20:20 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4837
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-17 06:00 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: 2025-02-16 14:22 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4836
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-16 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: 2025-02-16 04:37 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3423
Begin Time: 2025-02-11 14:05 UTC
Yesterday Maximum 2MeV Flux: 4741 pfu

Issue Time: 2025-02-16 04:18 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4835
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-16 15:00 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: 2025-02-15 21:15 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Feb 16: G1 (Minor) Feb 17: None (Below G1) Feb 18: None (Below G1)
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: 2025-02-15 18:22 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-02-15 17:59 UTC
Synoptic Period: 1800-2100 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: 2025-02-15 17:33 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1973
Valid From: 2025-02-15 10:15 UTC
Now Valid Until: 2025-02-15 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: 2025-02-15 17:32 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4834
Valid From: 2025-02-13 05:27 UTC
Now Valid Until: 2025-02-16 06:00 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: 2025-02-15 10:34 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025-02-15 10:30 UTC
Valid To: 2025-02-15 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: 2025-02-15 10:30 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025-02-15 10:24 UTC
Synoptic Period: 0900-1200 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: 2025-02-15 10:09 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025-02-15 10:15 UTC
Valid To: 2025-02-15 18:00 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.

Built 2025-02-18 09:07 from source