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Time
UTC		DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
11:55------
11:54------
11:53------
11:52--1.56---
11:512.80428.71.75---
11:502.45429.21.73---
11:491.88433.81.68---
11:482.17433.81.87---
11:472.48436.31.942.5436.31.9
11:462.39434.41.672.4434.41.7
11:452.12432.01.702.1432.01.7
11:442.09433.41.682.1433.41.7
11:432.36432.91.822.4432.91.8
11:422.08422.81.772.1422.81.8
11:411.21412.21.771.2412.21.8
11:401.83425.71.851.8425.71.9
11:392.16426.02.302.2426.02.3
11:382.85434.12.252.9434.12.2
11:371.27420.32.181.3420.32.2
11:361.98426.32.262.0426.32.3
11:352.34432.42.112.3432.42.1
11:345.84445.02.145.8445.02.1
11:333.52435.42.133.5435.42.1
11:322.30426.92.192.3426.92.2
11:312.59428.62.192.6428.62.2
11:302.55432.12.112.5432.12.1
11:292.25432.52.142.3432.52.1
11:282.17432.02.362.2432.02.4
11:271.60427.12.121.6427.12.1
11:261.60427.12.371.6427.12.4
11:252.38430.5-2.4430.5-
11:242.45429.82.392.5429.82.4
11:232.73427.22.352.7427.22.4
11:222.50429.62.232.5429.62.2
11:212.09424.12.432.1424.12.4
11:202.32427.22.562.3427.22.6
11:190.94402.12.390.9402.12.4
11:182.14418.42.362.1418.42.4
11:174.66429.42.404.7429.42.4
11:162.68418.32.352.7418.32.4
11:153.55422.02.223.6422.02.2
11:142.89421.02.272.9421.02.3
11:131.68416.92.131.7416.92.1
11:123.29434.91.733.3434.91.7
11:113.48435.51.453.5435.51.5
11:103.65435.21.683.6435.21.7
11:093.39432.42.373.4432.42.4
11:083.51432.11.663.5432.11.7
11:073.79432.42.143.8432.42.1
11:063.82433.82.133.8433.82.1
11:053.66434.92.253.7434.92.3
11:042.93435.51.872.9435.51.9
11:033.71436.42.303.7436.42.3
11:023.97434.62.284.0434.62.3
11:011.21414.72.311.2414.72.3
11:002.86431.92.212.9431.92.2
10:593.30437.72.253.3437.72.3
10:584.88448.72.264.9448.72.3
10:574.98451.7-5.0451.7-
10:563.83446.0-3.8446.0-
10:55--1.64--1.6
10:544.22446.91.744.2446.91.7
10:534.45448.11.534.5448.11.5
10:525.00450.91.805.0450.91.8
10:514.30448.32.044.3448.32.0
10:504.31-1.954.3-2.0
10:494.31448.22.024.3448.22.0
10:483.79447.81.903.8447.81.9
10:473.78447.8-3.8447.8-
10:46------
10:45------
10:44------
10:433.41447.72.123.4447.72.1
10:423.77456.32.123.8456.32.1
10:414.44461.01.854.4461.01.9
10:404.33456.12.064.3456.12.1
10:393.69451.81.653.7451.81.6
10:383.76453.41.153.8453.41.1
10:374.09457.01.074.1457.01.1
10:364.18457.41.114.2457.41.1
10:354.39457.11.034.4457.11.0
10:347.40470.31.117.4470.31.1
10:333.73453.30.943.7453.30.9
10:323.40451.00.993.4451.01.0
10:314.78461.21.084.8461.21.1
10:30--1.35--1.4
10:29------
10:28------
10:27------
10:26------
10:25------
10:24------
10:23------
10:22------
10:21------
10:20------
10:19------
10:18------
10:17------
10:16------
10:15------
10:14------
10:13------
10:12------
10:11------
10:10------
10:09------
10:08------
10:07------
10:06------
10:05------
10:04------
10:03------
10:02--1.57--1.6
10:01--1.64--1.6
10:00------
09:59------
09:58--1.56--1.6
09:573.04452.41.633.0452.41.6
09:563.26451.81.543.3451.81.5
Built 2024-05-03 11:56 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]1.02.62.0
velocity [km/s]402.1461.0433.9
density [cm-3]0.95.83.1
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)18559
Maasi (MAS)22554
Kilpisjärvi (KIL)24554
Ivalo (IVA)20451
Muonio (MUO)24449
Sodankylä (SOD)21446
Pello (PEL)25444
Oulujärvi (OUJ)20438
Mekrijärvi (MEK)16424
Hankasalmi (HAN)15428
Nurmijärvi (NUR)15429
Tartu (TAR)14323
low increasedmoderate high very high

Short explanation of the method

AurorasNow! (Finnish Meteorological Institute)
Built 2024-05-03 11:47 from source
NAL | LYR | HOP | BJN | NOR | SOR | TRO | KEV | KIL | MEK | HAN | NUR | TAR
Issue Time: 2024-05-03 02:51 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024-05-03 02:32 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: 2024-05-03 02:39 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024-05-03 02:19 UTC
Maximum Time: 2024-05-03 02:19 UTC
End Time: 2024-05-03 02:23 UTC
Duration: 4 minutes
Peak Flux: 660 sfu
Latest Penticton Noon Flux: 142 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

Issue Time: 2024-05-03 02:38 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024-05-03 02:11 UTC
Maximum Time: 2024-05-03 02:22 UTC
End Time: 2024-05-03 02:27 UTC
X-ray Class: X1.6
Optical Class: 1b
Location: N23E06
NOAA Scale: R3 - Strong
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

Issue Time: 2024-05-03 02:36 UTC
ALERT: Type II Radio Emission
Begin Time: 2024-05-03 02:20 UTC
Estimated Velocity: 959 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: 2024-05-03 02:22 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-05-03 02:19 UTC
NOAA Scale: R2 - Moderate

Issue Time: 2024-05-02 21:00 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-02 20:59 UTC
Synoptic Period: 1800-2100 UTC

Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2024-05-02 20:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4601
Valid From: 2024-05-02 13:35 UTC
Now Valid Until: 2024-05-03 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: 2024-05-02 20:56 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 516
Valid From: 2024-05-02 14:50 UTC
Now Valid Until: 2024-05-03 09:00 UTC
Warning Condition: Persistence
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: 2024-05-02 20:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1870
Valid From: 2024-05-02 13:55 UTC
Now Valid Until: 2024-05-03 12:00 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: 2024-05-02 20:56 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 101
Valid From: 2024-05-02 16:40 UTC
Now Valid Until: 2024-05-03 03:00 UTC
Warning Condition: Persistence
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2024-05-02 19:17 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-02 19:17 UTC
Synoptic Period: 1800-2100 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: 2024-05-02 19:04 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-02 19:04 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: 2024-05-02 18:03 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024-05-02 17:59 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G3 - Strong
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2024-05-02 16:39 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2024-05-02 16:40 UTC
Valid To: 2024-05-02 21:00 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Issue Time: 2024-05-02 16:24 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024-05-02 16:24 UTC
Synoptic Period: 1500-1800 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: 2024-05-02 16:05 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-02 16:05 UTC
Synoptic Period: 1500-1800 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: 2024-05-02 14:50 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024-05-02 14:48 UTC
Synoptic Period: 1200-1500 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: 2024-05-02 14:50 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024-05-02 14:50 UTC
Valid To: 2024-05-02 21:00 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: 2024-05-02 14:22 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024-05-02 14:22 UTC
Synoptic Period: 1200-1500 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: 2024-05-02 14:22 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024-05-02 14:12 UTC
Deviation: 29 nT
Station: HAD

Issue Time: 2024-05-02 13:51 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024-05-02 13:55 UTC
Valid To: 2024-05-02 21:00 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: 2024-05-02 13:32 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024-05-02 13:35 UTC
Valid To: 2024-05-03 06:00 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: 2024-05-02 13:29 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024-05-02 14:04 UTC
Valid To: 2024-05-02 14:34 UTC
IP Shock Passage Observed: 2024-05-02 13:17 UTC

Issue Time: 2024-05-01 02:26 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4599
Valid From: 2024-04-30 22:42 UTC
Now Valid Until: 2024-05-01 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: 2024-05-01 00:04 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024-04-30 23:23 UTC
Maximum Time: 2024-04-30 23:46 UTC
End Time: 2024-04-30 23:58 UTC
X-ray Class: M9.5
Optical Class: 2b
Location: S07W63
NOAA Scale: R2 - Moderate
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

Issue Time: 2024-04-30 23:55 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024-04-30 23:42 UTC
Maximum Time: 2024-04-30 23:43 UTC
End Time: 2024-04-30 23:45 UTC
Duration: 3 minutes
Peak Flux: 270 sfu
Latest Penticton Noon Flux: 130 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

Issue Time: 2024-04-30 23:49 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024-04-30 23:43 UTC
NOAA Scale: R2 - Moderate

Issue Time: 2024-04-30 23:33 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024-04-30 23:32 UTC
Valid To: 2024-05-01 03:00 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: 2024-04-30 23:16 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024-04-30 23:15 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes
Comment: Conditions were likely first reached at approximately 30/1955 UTC. However, a major network outage prevented alert issuance.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2024-04-30 22:43 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024-04-30 22:42 UTC
Valid To: 2024-05-01 03:00 UTC
Warning Condition: Persistence
Comment: Conditions were likely first reached at approximately 30/1642 UTC. However, a major network outage prevented warning issuance.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2024-04-30 16:42 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024-04-30 16:42 UTC
Valid To: 2024-04-30 23:59 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 2024-05-03 02:53 from source