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Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
03:17------
03:16------
03:15-----3.0
03:148.16542.32.962.3542.23.7
03:138.09545.82.932.2533.43.6
03:128.20543.93.102.1533.12.6
03:118.15544.13.262.1532.3-0.5
03:108.17546.63.812.0527.00.5
03:098.19548.43.982.4535.10.3
03:088.16546.23.832.3532.61.7
03:078.19545.33.412.4531.31.9
03:067.98540.62.392.4534.32.5
03:058.19544.02.902.1535.81.6
03:048.18550.03.382.1534.8-0.2
03:037.63539.62.182.1535.9-0.8
03:027.85538.8-0.122.1537.2-1.1
03:017.98539.30.712.2539.1-0.6
03:008.04542.2-0.452.2536.6-2.3
02:598.07541.3-0.042.1531.7-0.3
02:587.11533.00.002.1530.2-0.3
02:577.38535.8-0.222.2529.0-0.4
02:566.82528.50.272.2529.1-0.8
02:556.46525.60.312.3531.8-1.6
02:546.85528.3-0.511.6535.7-2.0
02:537.19529.90.281.7539.1-2.7
02:527.07528.8-1.481.8541.7-3.3
02:517.30534.4-2.461.7550.5-3.6
02:507.83536.3-2.321.7543.9-3.4
02:497.03530.7-2.041.7537.9-3.2
02:487.03528.0-2.381.6533.4-2.3
02:477.02529.4-2.741.6532.7-2.9
02:466.93528.8-2.731.7529.2-3.0
02:456.84526.0-2.772.0525.1-2.1
02:446.82527.0-2.482.0524.3-2.0
02:436.91527.0-1.961.9521.3-2.0
02:427.06524.0-2.272.2517.9-1.6
02:417.18523.8-2.652.3517.7-1.3
02:407.06526.2-2.272.2518.0-1.0
02:396.96526.9-1.952.1516.1-0.7
02:386.95527.1-1.251.7522.0-0.6
02:377.00528.1-1.482.1519.6-0.4
02:367.11527.0-1.432.1521.2-0.2
02:357.31522.4-0.842.5509.50.0
02:347.15519.1-0.352.3525.72.6
02:337.51528.0-0.152.3534.04.5
02:327.34530.41.352.2531.94.4
02:316.94528.42.982.3522.34.4
02:308.00530.74.042.5511.33.3
02:297.41525.34.432.7506.22.6
02:287.38527.14.472.3522.24.4
02:277.66531.54.002.3518.64.6
02:268.11534.24.612.3510.22.1
02:257.91531.14.132.4510.72.0
02:247.28525.22.442.3516.72.5
02:237.06525.01.122.3513.02.9
02:226.90527.01.382.1512.72.1
02:217.15524.43.772.4507.90.6
02:207.05521.14.282.6510.60.1
02:197.22516.63.382.5510.20.5
02:187.28519.31.512.2509.10.8
02:177.10522.11.062.5508.10.4
02:167.16520.71.492.3507.10.3
02:157.27520.41.372.2506.22.9
02:147.20520.21.812.3503.62.9
02:137.13520.61.812.3504.92.3
02:127.16522.11.812.3508.21.7
02:117.18519.51.362.4506.82.2
02:107.23521.11.212.3508.12.5
02:097.33520.50.942.1508.22.4
02:086.95514.21.112.4505.42.8
02:076.98517.40.932.2510.52.9
02:067.23514.90.722.4532.10.6
02:057.03510.91.292.3527.8-0.8
02:046.97510.81.612.4532.0-0.9
02:037.18509.01.772.4527.2-0.7
02:027.04506.41.912.3523.9-0.3
02:017.24506.41.042.3525.0-0.5
02:007.50507.40.112.4528.0-0.8
01:597.34513.4-1.02---1.1
01:587.17521.5-2.292.4528.7-1.5
01:577.16521.5-1.852.6528.6-2.2
01:566.93520.9-0.852.8527.3-2.6
01:557.38514.70.922.7514.5-1.8
01:547.40511.81.272.7513.8-0.4
01:537.49514.20.622.8509.80.7
01:527.89512.40.412.7502.61.5
01:517.51513.70.412.7511.40.9
01:507.58514.90.782.6506.72.4
01:497.58511.91.062.5506.81.8
01:487.43511.61.092.9497.61.4
01:477.45511.21.272.8504.50.4
01:467.50511.81.162.4505.4-0.5
01:457.55511.91.012.5505.20.1
01:447.48514.00.762.7504.80.6
01:437.32516.10.552.8509.2-0.3
01:427.61517.01.612.6511.5-1.7
01:417.31515.30.502.6508.5-1.2
01:407.22517.30.172.5508.9-0.4
01:397.17520.0-0.552.2511.1-1.0
01:387.39518.7-1.412.5504.9-2.1
01:377.67521.8-1.522.6504.3-1.7
01:367.36521.3-1.402.7507.4-2.1
01:357.44522.8-0.702.7504.6-1.8
01:347.44521.5-0.462.9502.6-1.2
01:337.48520.4-2.542.8500.1-1.5
01:327.09518.8-1.402.9501.8-1.7
01:317.37517.5-1.903.2498.0-2.0
01:307.60517.9-1.653.0500.2-2.0
01:297.11516.7-1.542.8501.4-1.8
01:287.27513.7-1.562.8501.6-1.4
01:277.11516.2-0.762.8501.2-1.5
01:267.46514.2-3.572.6499.0-3.4
01:257.31510.7-2.482.7500.3-3.3
01:247.11514.9-2.323.0504.3-2.9
01:237.21516.9-2.693.1503.9-2.7
01:227.36515.0-3.692.4501.3-2.2
01:217.30514.8-3.622.5500.9-1.5
01:207.22516.6-3.622.9499.4-3.6
01:197.15513.4-2.452.8499.3-2.5
01:187.09510.8-1.162.7501.5-2.2
Built 2021-09-25 03:18 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-2.84.60.8
velocity [km/s]516.6550.0530.3
density [cm-3]6.58.27.4
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)438221
Maasi (MAS)458220
Kilpisjärvi (KIL)507223
Ivalo (IVA)275201
Muonio (MUO)255163
Sodankylä (SOD)205143
Pello (PEL)195137
Oulujärvi (OUJ)12465
Mekrijärvi (MEK)7226
Hankasalmi (HAN)7332
Nurmijärvi (NUR)8328
Tartu (TAR)-220
low increasedmoderate high very high

Short explanation of the method

AurorasNow! (Finnish Meteorological Institute)
Built 2021-09-25 03:17 from source
Issue Time: 2021-09-23 17:08 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Sep 24: None (Below G1) Sep 25: None (Below G1) Sep 26: 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: 2021-09-23 08:12 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-09-23 08:12 UTC
Synoptic Period: 0600-0900 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: 2021-09-23 08:10 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-09-23 08:05 UTC
Valid To: 2021-09-23 15:00 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: 2021-09-23 05:21 UTC
ALERT: Type IV Radio Emission
Begin Time: 2021-09-23 04:54 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

Issue Time: 2021-09-23 05:10 UTC
ALERT: Type II Radio Emission
Begin Time: 2021-09-23 04:44 UTC
Estimated Velocity: 966 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

Issue Time: 2021-09-22 08:43 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021-09-22 08:40 UTC
Valid To: 2021-09-22 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: 2021-09-22 08:28 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3934
Valid From: 2021-09-21 22:23 UTC
Now Valid Until: 2021-09-22 15:00 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: 2021-09-22 02:59 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-09-22 02:59 UTC
Synoptic Period: 0000-0300 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: 2021-09-21 22:24 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-09-21 22:23 UTC
Valid To: 2021-09-22 09:00 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 2021-09-23 17:10 from source