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Time
UTC
DSCOVRACE
Solar WindGSMSolar WindGSM
Proton DensityBulk SpeedBzProton DensityBulk SpeedBz
06:11------
06:10------
06:09------
06:08------
06:07---0.6454.8-1.0
06:06---0.9467.5-0.9
06:05---0.8466.20.4
06:04---0.9477.41.1
06:03---0.7448.41.1
06:02---1.0451.61.0
06:01---1.3462.9-
06:00---1.3459.8-
05:59---1.2454.2-
05:58---1.2450.80.1
05:57-----1.1
05:56---1.1456.21.3
05:55---0.8438.01.2
05:54---1.6470.81.6
05:53---1.2458.91.2
05:52---1.0456.80.7
05:51---1.0454.7-0.1
05:50---0.7447.2-0.5
05:49---0.4482.9-0.1
05:48---0.3476.0-2.2
05:47---0.3455.6-2.8
05:46---0.8455.1-
05:45---0.6476.3-
05:44---0.1458.0-
05:43---0.3438.9-2.9
05:42---0.6469.5-3.2
05:41---0.5486.1-3.6
05:40------3.8
05:39---0.6464.0-3.3
05:38---0.8448.4-2.6
05:37---0.5464.7-2.7
05:36------2.2
05:35---0.4449.6-2.0
05:34---0.4446.1-1.9
05:33------1.6
05:32---0.8465.6-1.4
05:31---0.5451.4-1.0
05:30---0.6455.1-1.0
05:29---1.0449.2-1.4
05:28---0.9445.9-1.4
05:27---0.5459.5-1.6
05:26---0.5469.5-1.8
05:25---0.6471.7-1.2
05:24------1.0
05:23------0.7
05:22---1.0478.4-0.0
05:21---0.7443.50.1
05:20---0.9458.60.5
05:19---0.8457.40.1
05:18---1.1467.20.1
05:17---0.7455.30.0
05:16---0.8465.3-0.0
05:15---0.8464.1-0.0
05:14---0.9460.0-0.1
05:13------0.1
05:12---0.8457.10.2
05:11---0.9463.20.2
05:10---0.8458.1-0.2
05:09---0.6442.10.5
05:08---0.9467.00.4
05:07---1.0470.00.3
05:06---0.6467.70.2
05:05---0.5437.4-0.5
05:04---1.0469.2-0.4
05:03---1.0--0.6
05:02---0.3429.3-0.7
05:01---0.7456.2-0.9
05:00---0.9460.10.0
04:59---1.1469.6-
04:58---0.9452.4-
04:57---0.9449.3-0.4
04:56---0.9458.2-0.4
04:55---1.1453.70.4
04:54---1.5449.9-
04:53---1.4456.2-
04:52---1.3461.5-
04:51---0.7470.9-
04:50---0.4440.6-
04:49---0.4440.6-
04:48------
04:47---0.8464.9-
04:46---0.4444.1-
04:45---0.6450.5-
04:44---0.6464.8-
04:43---0.5450.2-1.9
04:42---0.5452.8-1.9
04:41---0.6455.4-2.2
04:40---2.9480.6-1.8
04:39---3.3474.9-0.1
04:38---0.5429.6-0.6
04:37---0.6440.6-0.8
04:36------1.0
04:35---0.7433.1-0.8
04:34---1.3449.5-0.6
04:33---1.3437.0-0.1
04:32---1.5434.40.8
04:31---1.3417.91.4
04:30---1.2417.11.8
04:29---1.4436.41.5
04:28---1.1422.51.0
04:27---1.3424.90.3
04:26---1.4439.30.8
04:25---1.2443.50.3
04:24---1.0433.8-0.2
04:23---0.8431.8-0.3
04:22---1.0444.4-1.1
04:21---1.1449.5-1.0
04:20---1.1446.2-0.9
04:19---1.4457.7-1.0
04:18---1.0451.8-0.7
04:17---0.7473.0-1.0
04:16---0.6458.1-1.0
04:15------1.5
04:14---1.1453.1-1.5
04:13---1.1449.8-1.4
04:12---1.1449.1-1.1
Built 2026-09-10 06:12 from source
Solar wind parameters of the latest hour by NOAA
parameterminmaxmean
IMF Bz [nT]-4.00.4-1.6
velocity [km/s]427.7460.3444.9
density [cm-3]2.83.53.0
Geomagnetic activity (RX [nT])
sitelatest hournext hour (RXmin, RXmax)
Kevo (KEV)21662
Maasi (MAS)18561
Kilpisjärvi (KIL)14662
Ivalo (IVA)13549
Muonio (MUO)8546
Sodankylä (SOD)7539
Pello (PEL)-535
Oulujärvi (OUJ)4426
Mekrijärvi (MEK)6319
Hankasalmi (HAN)5322
Nurmijärvi (NUR)5423
Tartu (TAR)6320
low increasedmoderate high very high

Short explanation of the method

Data and licenses

AurorasNow! (Finnish Meteorological Institute)
Built 2026-09-10 06:02 from source
Issue Time: 2026-09-09 21:01 UTC
CANCEL WATCH: Geomagnetic Storm Category G2 Predicted
Cancel Serial Number: 281
Original Issue Time: 2026-09-08 17:02 UTC
Cancelled Level Predicted
Sep 08: None (Bellow G1) Sep 09 : None (Bellow G1) Sep 10 : None (Bellow G1)
Conditions no longer warrant watch criteria.
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: 2026-09-09 05:38 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Continuation of Serial Number: 3738
Begin Time: 2026-09-08 15:50 UTC
Yesterday Maximum 2MeV Flux: 1003 pfu
CORRECTED

Issue Time: 2026-09-09 05:35 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Continuation of Serial Number: 3737
Begin Time: 2026-09-08 15:50 UTC
Yesterday Maximum 2MeV Flux: 1540 pfu
Max time: 2026-09-09 01:45 UTC

Issue Time: 2026-09-08 17:51 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-09-08 17:44 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-09-08 17:30 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5414
Valid From: 2026-09-07 08:54 UTC
Now Valid Until: 2026-09-09 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: 2026-09-08 17:27 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2263
Valid From: 2026-09-07 20:00 UTC
Now Valid Until: 2026-09-08 23:59 UTC
Warning Condition: Persistence
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: 2026-09-08 17:02 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day
Sep 08: G1 (Minor) Sep 09: G2 (Moderate) Sep 10: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment
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: 2026-09-08 16:08 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Threshold Reached: 2026-09-08 15:50 UTC
Station: GOES-19
Comment: Yesterday's max: 373 pfu

Issue Time: 2026-09-08 07:34 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026-09-08 07:30 UTC
Synoptic Period: 0600-0900
Active Warning: YES
Noaa Scale: G1 - Minor
Comment
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: 2026-09-08 05:46 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2262
Valid From: 2026-09-07 20:00 UTC
Now Valid Until: 2026-09-08 18:00 UTC
Warning Condition: Persistence
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: 2026-09-08 05:45 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5413
Valid From: 2026-09-07 08:54 UTC
Now Valid Until: 2026-09-08 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: 2026-09-07 20:01 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026-09-07 20:00 UTC
Valid To: 2026-09-08 06:00 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment
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: 2026-09-07 16:35 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day
Sep 08: G1 (Minor) Sep 09: G1 (Minor) Sep 10: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment
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: 2026-09-07 14:13 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5412
Valid From: 2026-09-07 08:54 UTC
Now Valid Until: 2026-09-08 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: 2026-09-07 11:08 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026-09-07 11:07 UTC
Synoptic Period: 0900-1200
Active Warning: YES
Comment
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Issue Time: 2026-09-07 08:55 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026-09-07 08:54 UTC
Valid To: 2026-09-07 18:00 UTC
Warning Conditions: Onset
Comment
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Built 2026-09-09 21:04 from source