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Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
10:54------
10:53------
10:52------
10:517.91399.08.256.2398.77.7
10:507.88399.38.256.8397.58.1
10:497.84400.18.226.8397.38.2
10:487.69399.88.177.0397.38.2
10:477.90400.58.187.1396.78.1
10:467.84399.98.156.9395.68.1
10:457.96401.67.916.9395.18.3
10:447.81401.37.886.9395.58.3
10:437.90399.98.057.3394.48.2
10:427.69400.18.137.4392.98.3
10:417.73399.48.336.9398.38.2
10:407.54397.98.446.9388.48.6
10:397.91397.18.466.9386.68.7
10:387.77396.38.466.9389.48.6
10:377.67398.58.477.7389.88.4
10:367.80397.68.527.9387.78.4
10:357.69396.88.526.3392.18.4
10:347.87396.18.525.8393.68.3
10:337.78398.28.447.5396.98.2
10:327.91399.68.387.5395.38.1
10:317.90400.28.397.0395.38.2
10:307.57385.28.916.8397.38.1
10:297.25390.38.847.0398.18.2
10:287.49387.58.886.9397.58.1
10:277.39388.28.926.9396.18.2
10:267.23389.18.956.9394.58.3
10:257.14391.88.857.4394.28.4
10:247.21391.98.836.9395.38.4
10:237.61396.58.825.2396.28.4
10:227.51397.78.696.7397.88.3
10:217.44397.68.667.1396.28.2
10:207.22399.18.636.9395.18.3
10:197.42400.48.596.9394.48.3
10:187.38400.78.587.1394.78.3
10:177.33400.18.667.1394.38.3
10:167.40399.98.667.2393.48.4
10:157.31399.68.587.3393.38.3
10:147.44406.17.937.1393.78.4
10:137.41406.77.717.0393.88.4
10:127.39405.77.857.3393.18.4
10:117.54408.07.797.0391.78.5
10:107.46405.07.987.0390.48.5
10:097.53402.58.266.5390.28.6
10:087.55401.78.357.2389.48.6
10:077.62400.98.295.4388.28.7
10:067.50401.48.197.0388.88.7
10:057.54401.68.216.8389.18.7
10:047.64402.68.207.0389.88.7
10:037.61403.08.146.6387.88.7
10:027.57402.98.116.7389.58.7
10:017.63404.18.226.8390.48.7
10:007.39404.18.587.6386.38.6
09:597.36402.88.597.4385.78.7
09:587.41400.78.687.3385.78.6
09:578.07409.97.337.4386.98.6
09:567.84407.57.337.1387.78.6
09:557.64409.96.946.8387.98.6
09:547.48410.56.786.7388.98.7
09:537.47412.86.207.0389.88.7
09:528.25416.76.286.9389.88.7
09:518.39415.86.286.1389.28.7
09:508.11416.86.366.3392.98.7
09:497.84414.46.606.8395.78.7
09:487.93414.36.426.0399.98.5
09:477.99417.06.356.3403.28.3
09:467.93416.96.886.4403.98.2
09:458.24416.16.346.7403.88.1
09:448.52415.05.566.6404.48.1
09:437.94413.75.916.6404.68.0
09:428.34412.66.276.8402.97.9
09:418.21413.65.856.8401.78.1
09:408.37416.45.726.2403.08.5
09:397.60412.66.295.5403.68.5
09:387.71413.56.306.6403.68.5
09:377.76411.66.276.3406.88.4
09:367.98412.56.237.0407.58.1
09:358.21417.55.846.3409.77.8
09:349.52421.15.246.8405.97.7
09:339.51421.45.386.3407.78.1
09:329.59421.65.407.0411.37.7
09:319.53420.45.736.8409.47.7
09:309.89417.36.297.7406.77.7
09:299.61416.36.346.4402.17.9
09:289.25414.06.375.5400.08.4
09:278.93411.86.716.7406.97.8
09:268.77408.26.877.1409.16.6
09:258.85412.07.047.5412.66.0
09:248.75411.87.007.5411.95.6
09:238.80414.46.967.1406.45.8
09:228.68413.66.956.4402.77.1
09:218.89415.36.836.0402.27.5
09:209.11416.46.645.9406.57.3
09:199.05418.56.387.2407.45.8
09:189.51418.85.916.5411.36.7
09:179.38419.15.416.8411.46.0
09:169.56417.65.566.7407.76.1
09:159.90417.25.537.0409.66.6
09:149.68417.55.636.7410.46.3
09:139.68417.25.566.7409.16.2
09:1210.09417.65.146.6412.46.5
09:119.99416.25.227.1413.46.3
09:109.75415.65.897.6412.66.2
09:099.63411.46.657.6415.16.0
09:089.10411.76.437.8416.95.5
09:079.38411.96.487.6417.64.8
09:069.67416.25.848.1416.84.1
09:0510.27414.55.828.2419.13.9
09:0410.81414.75.237.5415.05.3
09:0311.01416.14.496.9415.26.2
09:0210.86416.14.657.5414.86.3
09:0110.77415.94.747.7415.96.1
09:0010.71416.74.947.2416.26.1
08:5910.19416.45.02---
08:589.49411.95.52--5.8
08:5711.14413.44.188.3414.55.9
08:5611.47413.63.377.8412.95.8
08:5511.50413.63.687.4411.36.3
Built 2021-10-16 10:55 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]5.68.97.9
velocity [km/s]385.2417.0403.1
density [cm-3]7.18.57.7
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)15539
Maasi (MAS)15539
Kilpisjärvi (KIL)15636
Ivalo (IVA)13733
Muonio (MUO)13534
Sodankylä (SOD)13534
Pello (PEL)12536
Oulujärvi (OUJ)11529
Mekrijärvi (MEK)8518
Hankasalmi (HAN)7422
Nurmijärvi (NUR)9424
Tartu (TAR)10620
low increasedmoderate high very high

Short explanation of the method

AurorasNow! (Finnish Meteorological Institute)
Built 2021-10-16 10:47 from source
Issue Time: 2021-10-12 21:09 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3945
Valid From: 2021-10-12 00:03 UTC
Now Valid Until: 2021-10-13 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: 2021-10-12 14:31 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1613
Valid From: 2021-10-12 02:00 UTC
Now Valid Until: 2021-10-12 22:00 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: 2021-10-12 14:29 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3944
Valid From: 2021-10-12 00:03 UTC
Now Valid Until: 2021-10-12 22:00 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: 2021-10-12 10:58 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-10-12 10:52 UTC
Synoptic Period: 0900-1200 UTC

Active Warning: Yes
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: 2021-10-12 10:24 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-10-12 10:20 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: 2021-10-12 04:48 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-10-12 04:47 UTC
Synoptic Period: 0300-0600 UTC

Active Warning: Yes
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: 2021-10-12 04:38 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2021-10-12 04:38 UTC
Valid To: 2021-10-12 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: 2021-10-12 04:05 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-10-12 03:58 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: 2021-10-12 02:57 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-10-12 02:57 UTC
Synoptic Period: 0000-0300 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: 2021-10-12 02:40 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-10-12 02:30 UTC
Deviation: 33 nT
Station: WNG

Issue Time: 2021-10-12 01:57 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021-10-12 02:00 UTC
Valid To: 2021-10-12 15:00 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: 2021-10-12 01:55 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-10-12 02:15 UTC
Valid To: 2021-10-12 03:15 UTC
IP Shock Passage Observed: 2021-10-12 01:47 UTC

Issue Time: 2021-10-12 00:56 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-10-12 00:55 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: 2021-10-12 00:04 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-10-12 00:03 UTC
Valid To: 2021-10-12 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: 2021-10-11 19:43 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
Oct 12: G2 (Moderate) Oct 13: None (Below G1) Oct 14: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: 2021-10-11 02:39 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3942
Valid From: 2021-10-10 22:20 UTC
Now Valid Until: 2021-10-11 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: 2021-10-10 22:38 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-10-10 22:35 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: 2021-10-10 22:20 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-10-10 22:20 UTC
Valid To: 2021-10-11 03:00 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 2021-10-12 21:10 from source