SettingsLast update:
| Time UTC | DSCOVR | ACE | ||||
|---|---|---|---|---|---|---|
| Solar Wind | GSM | Solar Wind | GSM | |||
| Proton Density | Bulk Speed | Bz | Proton Density | Bulk Speed | Bz | |
| 19:11 | - | - | - | - | - | - |
| 19:10 | - | - | - | - | - | - |
| 19:09 | - | - | - | - | - | - |
| 19:08 | 2.08 | 431.7 | - | 0.0 | 419.5 | -0.0 |
| 19:07 | 2.15 | 432.8 | - | 0.0 | 434.0 | 0.1 |
| 19:06 | 2.70 | 434.6 | -0.16 | 0.0 | 416.1 | 0.2 |
| 19:05 | 2.48 | 437.8 | 0.26 | 0.0 | 436.0 | 0.1 |
| 19:04 | 2.08 | 448.7 | -0.24 | 0.0 | 419.7 | -0.0 |
| 19:03 | 1.88 | 442.3 | -0.49 | 0.0 | 423.3 | 0.1 |
| 19:02 | 1.85 | 441.8 | -0.71 | 0.0 | 416.0 | -0.0 |
| 19:01 | 1.84 | 438.2 | -0.66 | 0.0 | 427.6 | -0.2 |
| 19:00 | 1.76 | 438.6 | -0.63 | 0.0 | 422.4 | -0.2 |
| 18:59 | 1.77 | 436.5 | -0.73 | 0.0 | 423.8 | 0.0 |
| 18:58 | 1.73 | 437.8 | -0.90 | 0.0 | 423.3 | -0.0 |
| 18:57 | 1.72 | 440.0 | -0.58 | 0.0 | 426.5 | -0.0 |
| 18:56 | 1.77 | 439.0 | -0.52 | 0.0 | 430.2 | 0.1 |
| 18:55 | 1.76 | 438.9 | -0.58 | 0.0 | 431.2 | 0.2 |
| 18:54 | 1.81 | 436.0 | -0.44 | 0.0 | 430.2 | 0.2 |
| 18:53 | 1.76 | 436.7 | -0.49 | 0.0 | 421.0 | 0.3 |
| 18:52 | 1.83 | 435.9 | -0.41 | 0.0 | 411.0 | 0.4 |
| 18:51 | 1.83 | 438.0 | -0.36 | 0.0 | 414.1 | 0.5 |
| 18:50 | 1.71 | 441.0 | -0.36 | 0.0 | 407.4 | 0.5 |
| 18:49 | 1.76 | 441.1 | -0.39 | 0.0 | 407.7 | 0.6 |
| 18:48 | 1.84 | 440.1 | -0.37 | 0.0 | 427.4 | 0.5 |
| 18:47 | 1.94 | 437.2 | -0.18 | 0.0 | 417.4 | 0.4 |
| 18:46 | 1.88 | 438.4 | -0.36 | 0.0 | 418.4 | 0.2 |
| 18:45 | 1.84 | 438.0 | -0.51 | 0.0 | 424.3 | 0.4 |
| 18:44 | 1.90 | 437.9 | -0.64 | 0.0 | 409.9 | 0.4 |
| 18:43 | 1.86 | 436.8 | -0.47 | 0.0 | 416.7 | 0.5 |
| 18:42 | 1.90 | 436.1 | -0.33 | 0.0 | 429.4 | 0.5 |
| 18:41 | 1.96 | 435.9 | -0.38 | 0.0 | 437.6 | 0.5 |
| 18:40 | 1.96 | 436.8 | -0.36 | 0.0 | 443.4 | 0.5 |
| 18:39 | 1.94 | 437.0 | -0.33 | 0.0 | 436.4 | 0.5 |
| 18:38 | 1.90 | 436.9 | -0.30 | 0.0 | 423.7 | 0.4 |
| 18:37 | 1.97 | 438.7 | 0.11 | 0.0 | 424.0 | 0.4 |
| 18:36 | 1.95 | 438.8 | 0.10 | 0.0 | 429.3 | 0.4 |
| 18:35 | 1.95 | 437.9 | 0.03 | 0.0 | 450.9 | 0.6 |
| 18:34 | 2.02 | 438.8 | -0.22 | 0.0 | 395.8 | 0.5 |
| 18:33 | 1.97 | 438.4 | -0.21 | 0.0 | 418.9 | 0.5 |
| 18:32 | 1.96 | 437.9 | 0.15 | 0.0 | 422.3 | 0.4 |
| 18:31 | 1.92 | 439.3 | 0.08 | 0.0 | 426.2 | 0.6 |
| 18:30 | 1.87 | 440.2 | 0.10 | 0.0 | 402.8 | 3.0 |
| 18:29 | 1.87 | 440.8 | 0.18 | 0.0 | 416.7 | 2.5 |
| 18:28 | 1.83 | 442.7 | 0.12 | 0.0 | 420.3 | 1.9 |
| 18:27 | 2.01 | 443.4 | -0.02 | 0.0 | 436.3 | 1.1 |
| 18:26 | 2.00 | 439.1 | 0.27 | 0.0 | 450.9 | 0.9 |
| 18:25 | 1.98 | 439.9 | 0.27 | 0.0 | 438.4 | 0.6 |
| 18:24 | 2.06 | 437.3 | 0.06 | 0.0 | 423.9 | 1.2 |
| 18:23 | 2.02 | 438.4 | -0.01 | 0.0 | 431.4 | 1.4 |
| 18:22 | 2.03 | 440.4 | -0.08 | 0.0 | 439.5 | 1.3 |
| 18:21 | 1.99 | 443.9 | 0.06 | 0.0 | 434.5 | 1.4 |
| 18:20 | 1.98 | 442.0 | 0.15 | 0.0 | 436.4 | 1.4 |
| 18:19 | 1.91 | 441.9 | 0.04 | 0.0 | 429.9 | 1.3 |
| 18:18 | 2.00 | 444.2 | -0.22 | 0.0 | 410.8 | 1.3 |
| 18:17 | 1.96 | 441.4 | -0.32 | 0.0 | - | 1.3 |
| 18:16 | 1.97 | 442.4 | 0.11 | 0.0 | 416.1 | 1.3 |
| 18:15 | 2.22 | 440.3 | 1.85 | 0.0 | 429.0 | 1.1 |
| 18:14 | 2.13 | 437.9 | 1.91 | 0.0 | 424.5 | 1.1 |
| 18:13 | 2.43 | 441.6 | 2.26 | 0.0 | 430.0 | 0.3 |
| 18:12 | 2.19 | 439.5 | 1.16 | 0.0 | 405.4 | 0.7 |
| 18:11 | 2.06 | 440.5 | 1.14 | 0.0 | 415.9 | 1.6 |
| 18:10 | 2.05 | 443.0 | 1.05 | 0.0 | 422.6 | 1.8 |
| 18:09 | 1.96 | 443.4 | 1.06 | 0.0 | 426.8 | 0.5 |
| 18:08 | 2.03 | 442.1 | 1.03 | 0.0 | 419.9 | -1.3 |
| 18:07 | 2.14 | 436.2 | 0.85 | 0.0 | 410.4 | -1.6 |
| 18:06 | 2.26 | 435.5 | 0.60 | 0.0 | 419.6 | -1.5 |
| 18:05 | 2.26 | 436.1 | 0.51 | 0.0 | 424.0 | -2.0 |
| 18:04 | 2.15 | 436.6 | 0.18 | 0.0 | 411.4 | -1.3 |
| 18:03 | 2.27 | 437.0 | 0.25 | 0.0 | 415.4 | -0.2 |
| 18:02 | 2.29 | 437.5 | 0.51 | 0.0 | 430.4 | -0.6 |
| 18:01 | 2.23 | 436.3 | 0.44 | 0.0 | 430.1 | -0.6 |
| 18:00 | 2.16 | 443.9 | 0.57 | 0.0 | 415.5 | -0.4 |
| 17:59 | 2.30 | 451.4 | 0.06 | - | - | - |
| 17:58 | 2.10 | 433.5 | 0.19 | 0.0 | 446.0 | -0.3 |
| 17:57 | 2.19 | 437.1 | 0.60 | 0.0 | 424.8 | -0.9 |
| 17:56 | 2.10 | 438.2 | 0.78 | 0.0 | 416.8 | -1.5 |
| 17:55 | 2.24 | 437.9 | 1.07 | 0.0 | 421.2 | -1.7 |
| 17:54 | 2.53 | 428.5 | 1.15 | 0.0 | 418.6 | -1.4 |
| 17:53 | 2.50 | 437.5 | 2.70 | 0.0 | 413.5 | -1.2 |
| 17:52 | 2.45 | 436.4 | 1.57 | 0.0 | 410.8 | -1.3 |
| 17:51 | 2.29 | 436.6 | 1.16 | 0.0 | 412.0 | -1.3 |
| 17:50 | 2.35 | 432.2 | 0.26 | 0.0 | 421.6 | -1.4 |
| 17:49 | 3.02 | 426.1 | -2.32 | 0.0 | 432.3 | -0.7 |
| 17:48 | 3.07 | 426.0 | -2.31 | 0.0 | 427.0 | -0.5 |
| 17:47 | 3.04 | 424.9 | -1.53 | 0.0 | 416.8 | -0.5 |
| 17:46 | 3.05 | 424.9 | -1.40 | 0.0 | 403.6 | -0.6 |
| 17:45 | 3.02 | 421.6 | -1.41 | - | - | -0.4 |
| 17:44 | 3.17 | 424.2 | -1.38 | - | - | 0.7 |
| 17:43 | 3.08 | 424.7 | -1.31 | 0.0 | 427.7 | 0.8 |
| 17:42 | 3.09 | 424.8 | -1.40 | 0.0 | 420.3 | 0.7 |
| 17:41 | 3.19 | 425.7 | -1.64 | 0.0 | 415.9 | 0.9 |
| 17:40 | 3.05 | 423.2 | -1.31 | 0.0 | 413.5 | 1.1 |
| 17:39 | 3.19 | 425.4 | -1.58 | 0.0 | 437.3 | 1.3 |
| 17:38 | 3.08 | 423.7 | -1.13 | 0.0 | 433.5 | 1.3 |
| 17:37 | 2.93 | 422.2 | -1.73 | 0.0 | 421.3 | 1.2 |
| 17:36 | 3.20 | 425.7 | -1.76 | 0.0 | 422.4 | 1.4 |
| 17:35 | 3.22 | 427.8 | -1.97 | 0.0 | 423.5 | 1.4 |
| 17:34 | 3.03 | 424.4 | -2.37 | 0.0 | 425.9 | 1.3 |
| 17:33 | 3.09 | 427.1 | -2.17 | 0.0 | 431.6 | 1.3 |
| 17:32 | 3.11 | 428.5 | -1.57 | 0.0 | 418.3 | 1.4 |
| 17:31 | 3.04 | 428.3 | -1.41 | 0.0 | 417.9 | 1.6 |
| 17:30 | 2.99 | 423.8 | -1.14 | 0.0 | 412.3 | 1.5 |
| 17:29 | 3.10 | 425.3 | -1.03 | 0.0 | 415.3 | 1.5 |
| 17:28 | 3.11 | 424.5 | -1.00 | 0.0 | 423.2 | 1.4 |
| 17:27 | 2.74 | 428.4 | -0.05 | 0.0 | 419.8 | 1.4 |
| 17:26 | 2.52 | 429.8 | 0.67 | 0.0 | 412.4 | 1.5 |
| 17:25 | 2.40 | 430.7 | 0.49 | 0.0 | 407.6 | 1.5 |
| 17:24 | 2.34 | 429.6 | 0.11 | 0.0 | 407.6 | 1.4 |
| 17:23 | 2.21 | 427.5 | 0.84 | 0.0 | 416.4 | 1.5 |
| 17:22 | 1.88 | 416.6 | 1.05 | 0.0 | 418.0 | 1.4 |
| 17:21 | 2.00 | 420.0 | 0.86 | 0.0 | 400.8 | 1.4 |
| 17:20 | 2.25 | 423.3 | 0.78 | 0.0 | 395.5 | 1.4 |
| 17:19 | 2.25 | 427.1 | 0.88 | 0.0 | 413.0 | 1.5 |
| 17:18 | 1.76 | 419.2 | 0.92 | 0.0 | 423.4 | 1.5 |
| 17:17 | 2.25 | 428.1 | 0.95 | 0.0 | 420.2 | 1.4 |
| 17:16 | 2.27 | 427.8 | 0.87 | 0.0 | 422.6 | 0.9 |
| 17:15 | 2.32 | 427.2 | 0.87 | 0.0 | 411.4 | 1.3 |
| 17:14 | 2.33 | 427.8 | 0.94 | 0.0 | 411.0 | 1.9 |
| 17:13 | 2.39 | 428.9 | 0.86 | 0.0 | 409.1 | 1.7 |
| 17:12 | 2.39 | 429.7 | 0.95 | - | - | 1.7 |
Built 2021-05-13 19:12 from source
| Solar wind parameters of the latest hour by NOAA | |||
|---|---|---|---|
| parameter | min | max | mean |
| IMF Bz [nT] | -0.6 | 2.3 | 0.2 |
| velocity [km/s] | 433.5 | 451.4 | 439.2 |
| density [cm-3] | 1.7 | 2.4 | 2.0 |
| Geomagnetic activity (RX [nT]) | ||
|---|---|---|
| site | latest hour | next hour (RXmin, RXmax) |
| Kevo (KEV) | 19 | 4 | 187 |
| Maasi (MAS) | 15 | 4 | 171 |
| Kilpisjärvi (KIL) | 14 | 4 | 157 |
| Ivalo (IVA) | 11 | 4 | 104 |
| Muonio (MUO) | 14 | 3 | 128 |
| Sodankylä (SOD) | 15 | 4 | 102 |
| Pello (PEL) | 15 | 4 | 89 |
| Oulujärvi (OUJ) | 14 | 3 | 36 |
| Mekrijärvi (MEK) | - | 2 | 21 |
| Hankasalmi (HAN) | 10 | 2 | 26 |
| Nurmijärvi (NUR) | 11 | 3 | 26 |
| Tartu (TAR) | 9 | 2 | 19 |
| low | increased | moderate | high | very high |
Short explanation of the method
AurorasNow! (Finnish Meteorological Institute)Built 2021-05-13 19:02 from source
Issue Time: 2021-05-13 05:31 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3898
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 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.
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3898
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3897
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 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.
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3897
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-13 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1600
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-13 06:00 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.
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1600
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-13 06:00 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 443
Valid From: 2021-05-12 12:25 UTC
Now Valid Until: 2021-05-12 23:59 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.
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 443
Valid From: 2021-05-12 12:25 UTC
Now Valid Until: 2021-05-12 23:59 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: 2021-05-12 17:59 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 77
Valid From: 2021-05-12 12:50 UTC
Now Valid Until: 2021-05-12 23:59 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.
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 77
Valid From: 2021-05-12 12:50 UTC
Now Valid Until: 2021-05-12 23:59 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: 2021-05-12 17:59 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 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.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 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: 2021-05-12 15:42 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 15:42 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.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 15:42 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: 2021-05-12 15:29 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 15:28 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.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 15:28 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: 2021-05-12 12:59 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 12:58 UTC
Synoptic Period: 1200-1500 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.
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021-05-12 12:58 UTC
Synoptic Period: 1200-1500 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: 2021-05-12 12:52 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1599
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-12 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.
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1599
Valid From: 2021-05-12 07:00 UTC
Now Valid Until: 2021-05-12 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: 2021-05-12 12:49 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2021-05-12 12:50 UTC
Valid To: 2021-05-12 18:00 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme
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.
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2021-05-12 12:50 UTC
Valid To: 2021-05-12 18:00 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme
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: 2021-05-12 12:32 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 12:32 UTC
Synoptic Period: 1200-1500 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.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021-05-12 12:32 UTC
Synoptic Period: 1200-1500 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: 2021-05-12 12:30 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 12:30 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.
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2021-05-12 12:30 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: 2021-05-12 12:28 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2021-05-12 12:25 UTC
Valid To: 2021-05-12 18:00 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.
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2021-05-12 12:25 UTC
Valid To: 2021-05-12 18:00 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: 2021-05-12 11:23 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3896
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-12 18:00 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.
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3896
Valid From: 2021-05-12 06:00 UTC
Now Valid Until: 2021-05-12 18:00 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: 2021-05-12 07:11 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-05-12 07:11 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.
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021-05-12 07:11 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: 2021-05-12 06:54 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-05-12 06:43 UTC
Deviation: 51 nT
Station: FRD
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2021-05-12 06:43 UTC
Deviation: 51 nT
Station: FRD
Issue Time: 2021-05-12 06:46 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021-05-12 07:00 UTC
Valid To: 2021-05-12 13:00 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.
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021-05-12 07:00 UTC
Valid To: 2021-05-12 13:00 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: 2021-05-12 05:58 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-05-12 06:00 UTC
Valid To: 2021-05-12 12:30 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.
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021-05-12 06:00 UTC
Valid To: 2021-05-12 12:30 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: 2021-05-12 05:56 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-05-12 05:54 UTC
Valid To: 2021-05-12 07:00 UTC
IP Shock Passage Observed: 2021-05-12 05:47 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2021-05-12 05:54 UTC
Valid To: 2021-05-12 07:00 UTC
IP Shock Passage Observed: 2021-05-12 05:47 UTC
Built 2021-05-13 05:34 from source
