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##Quelle: https://services.swpc.noaa.gov/products/alerts.json
Zeitraum: 1 Monat ( 20.Jul.2026 14:42 UTC - 19.Aug.2026 05:45 )
19.Aug.2026 05:45 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Aug 19 0545 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18.Aug.2026 20:52 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5404
Valid From: 2026 Aug 17 2101 UTC
Now Valid Until: 2026 Aug 19 1800 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
18.Aug.2026 20:45 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Aug 18 2045 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18.Aug.2026 20:43 UTC · WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Aug 18 2042 UTC
Valid To: 2026 Aug 19 1200 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18.Aug.2026 14:31 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5403
Valid From: 2026 Aug 17 2101 UTC
Now Valid Until: 2026 Aug 18 2359 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
18.Aug.2026 05:06 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Aug 18 0505 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18.Aug.2026 02:27 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5402
Valid From: 2026 Aug 17 2101 UTC
Now Valid Until: 2026 Aug 18 1500 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
18.Aug.2026 02:27 UTC · WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Aug 18 0224 UTC
Valid To: 2026 Aug 18 1200 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
17.Aug.2026 22:46 UTC · WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Aug 18: None (Below G1) Aug 19: G1 (Minor) Aug 20: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:
NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
17.Aug.2026 21:05 UTC · ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Aug 17 2059 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
17.Aug.2026 21:01 UTC · WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Aug 17 2101 UTC
Valid To: 2026 Aug 18 0600 UTC
Warning Conditions: Onset
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
17.Aug.2026 17:19 UTC · ALERT: Type II Radio Emission
Begin Time: 2026 Aug 17 1637 UTC
Estimate Velocity: 825 km/s
Comment:
· ·
14.Aug.2026 10:54 UTC · WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Aug 14 1052 UTC
Valid To: 2026 Aug 14 2359 UTC
Warning Conditions: Onset
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
14.Aug.2026 07:15 UTC · ALERT: Type II Radio Emission
Begin Time: 2026 Aug 14 0650 UTC
Estimate Velocity: 671 km/s
Comment:
· ·
11.Aug.2026 11:41 UTC · SUMMARY: Geomagnetic Sudden Impulse
Observed: 2026 Aug 11 1133 UTC
Deviation: 12 nT
Station: BOU
Comment:
· ·
11.Aug.2026 10:47 UTC · WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2026 Aug 11 1040 UTC
Valid To: 2026 Aug 11 1248 UTC
Ip Shock: 2026-08-11 10:43
Comment: Weak shock detected at L1.
· ·
09.Aug.2026 13:38 UTC · WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Aug 10: None (Below G1) Aug 11: None (Below G1) Aug 12: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:
NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
08.Aug.2026 21:08 UTC · ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Aug 08 2100 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment: Corrected for synoptic period
CORRECTED
· NOAA Scale: G2 - Moderate ·
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
08.Aug.2026 21:00 UTC · ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Aug 08 2100 UTC
Synoptic Period: 2100-2400
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment:
· NOAA Scale: G2 - Moderate ·
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
08.Aug.2026 20:35 UTC · WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Aug 08 2035 UTC
Valid To: 2026 Aug 08 2359 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment:
· NOAA Scale: G2 - Moderate ·
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
08.Aug.2026 20:30 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Aug 08 2030 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08.Aug.2026 20:29 UTC · EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2257
Valid From: 2026 Aug 08 1222 UTC
Now Valid Until: 2026 Aug 08 2359 UTC
Warning Condition: Persistence
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08.Aug.2026 20:29 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5399
Valid From: 2026 Aug 08 0958 UTC
Now Valid Until: 2026 Aug 09 0600 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
08.Aug.2026 17:19 UTC · EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2256
Valid From: 2026 Aug 08 1222 UTC
Now Valid Until: 2026 Aug 08 2100 UTC
Warning Condition: Persistence
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08.Aug.2026 13:36 UTC · WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Aug 08 1336 UTC
Valid To: 2026 Aug 08 1800 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment:
· NOAA Scale: G2 - Moderate ·
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
08.Aug.2026 13:14 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Aug 08 1314 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08.Aug.2026 12:23 UTC · WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Aug 08 1222 UTC
Valid To: 2026 Aug 08 1800 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08.Aug.2026 11:40 UTC · ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Aug 08 1136 UTC
Synoptic Period: 0900-1200
Active Warning: YES
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
08.Aug.2026 09:59 UTC · WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Aug 08 0958 UTC
Valid To: 2026 Aug 08 2359 UTC
Warning Conditions: Onset
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
04.Aug.2026 08:10 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5397
Valid From: 2026 Aug 02 1237 UTC
Now Valid Until: 2026 Aug 04 1500 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
03.Aug.2026 23:55 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5396
Valid From: 2026 Aug 02 1237 UTC
Now Valid Until: 2026 Aug 04 0900 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
03.Aug.2026 20:03 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5395
Valid From: 2026 Aug 02 1237 UTC
Now Valid Until: 2026 Aug 04 0000 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
03.Aug.2026 02:53 UTC · EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2254
Valid From: 2026 Aug 02 1427 UTC
Now Valid Until: 2026 Aug 03 1500 UTC
Warning Condition: Persistence
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
03.Aug.2026 02:53 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5394
Valid From: 2026 Aug 02 1237 UTC
Now Valid Until: 2026 Aug 03 2100 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
02.Aug.2026 18:00 UTC · ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Aug 02 1759 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment:
· NOAA Scale: G2 - Moderate ·
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
02.Aug.2026 17:46 UTC · WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Aug 02 1745 UTC
Valid To: 2026 Aug 02 2359 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment:
· NOAA Scale: G2 - Moderate ·
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
02.Aug.2026 17:48 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5393
Valid From: 2026 Aug 02 1237 UTC
Now Valid Until: 2026 Aug 03 1200 UTC
Warning Condition: Persistence
This extends the previous warning.
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
02.Aug.2026 17:47 UTC · EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2253
Valid From: 2026 Aug 02 1427 UTC
Now Valid Until: 2026 Aug 03 0300 UTC
Warning Condition: Persistence
This extends previous warning.
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02.Aug.2026 17:12 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Aug 02 1712 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02.Aug.2026 16:34 UTC · WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Aug 03: G1 (Minor) Aug 04: None (Below G1) Aug 05: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:
NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
02.Aug.2026 14:28 UTC · WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Aug 02 1427 UTC
Valid To: 2026 Aug 02 2359 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02.Aug.2026 13:42 UTC · ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Aug 02 1342 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
02.Aug.2026 12:46 UTC · SUMMARY: Geomagnetic Sudden Impulse
Observed: 2026 Aug 02 1229 UTC
Deviation: 27 nT
Station: FRD
Comment:
· ·
02.Aug.2026 12:38 UTC · WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Aug 02 1237 UTC
Valid To: 2026 Aug 03 0300 UTC
Warning Conditions: Onset
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
02.Aug.2026 11:40 UTC · WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2026 Aug 02 1215 UTC
Valid To: 2026 Aug 02 1315 UTC
Ip Shock: 2026-08-02 11:29
Comment:
· ·
01.Aug.2026 17:02 UTC · SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026 Jul 31 1320 UTC
Maximum Time: 2026 Jul 31 1555 UTC
End Time: 2026 Jul 31 1745 UTC
Maximum 10MeV Flux: 18 pfu
Noaa Scale: S1 - Minor
Comment:
· NOAA Scale: S1 - Minor ·
01.Aug.2026 16:44 UTC · ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Threshold Reached: 2026 Aug 01 1644 UTC
Station: GOES-19
Comment: Yesterday's max: 1157 pfu
· ·
31.Jul.2026 21:54 UTC · EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 629
Valid From: 2026 Jul 31 1335 UTC
Now Valid Until: 2026 Aug 01 1200 UTC
Warning Condition: Persistence
· NOAA Scale: S1 - Minor ·
31.Jul.2026 18:46 UTC · SUMMARY: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2026 Jul 30 1825 UTC
Maximum Time: 2026 Jul 30 1826 UTC
End Time: 2026 Jul 30 1830 UTC
Maximum 100MeV Flux: 1 pfu
Comment:
· ·
31.Jul.2026 13:37 UTC · ALERT: Proton Event 10meV Integral Flux exceeded 10pfu
Begin Time: 2026 Jul 31 1336 UTC
Noaa Scale: S1 - Minor
Comment:
· NOAA Scale: S1 - Minor ·
31.Jul.2026 13:36 UTC · WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2026 Jul 31 1335 UTC
Valid To: 2026 Jul 31 2359 UTC
Warning Conditions: Onset
Noaa Scale: S1 - Minor
Comment:
· NOAA Scale: S1 - Minor ·
31.Jul.2026 11:05 UTC · WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jul 31: None (Below G1) Aug 01: None (Below G1) Aug 02: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:
NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
31.Jul.2026 09:08 UTC · SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026 Jul 30 1845 UTC
Maximum Time: 2026 Jul 30 2055 UTC
End Time: 2026 Jul 31 0715 UTC
Maximum 10MeV Flux: 18 pfu
Noaa Scale: S1 - Minor
Comment:
· NOAA Scale: S1 - Minor ·
31.Jul.2026 01:56 UTC · CANCEL ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu
Cancel Serial Number: 56
Original Issue Time: 2026 Jul 30 1833 UTC
Threshold was met at 30/1845 UTC and ended at 30/1850 UTC
· ·
30.Jul.2026 19:03 UTC · ALERT: Proton Event 10meV Integral Flux exceeded 10pfu
Begin Time: 2026 Jul 30 1903 UTC
Noaa Scale: S1 - Minor
Comment:
· NOAA Scale: S1 - Minor ·
30.Jul.2026 18:34 UTC · WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2026 Jul 30 1833 UTC
Valid To: 2026 Jul 31 0900 UTC
Warning Conditions: Onset
Noaa Scale: S1 - Minor
Comment:
· NOAA Scale: S1 - Minor ·
30.Jul.2026 18:33 UTC · ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2026 Jul 30 1833 UTC
Comment:
· ·
30.Jul.2026 18:08 UTC · WARNING: Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2026 Jul 30 1807 UTC
Valid To: 2026 Jul 31 0300 UTC
Warning Conditions: Onset
Comment:
· ·
30.Jul.2026 17:16 UTC · SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jul 30 1636 UTC
Maximum Time: 2026 Jul 30 1643 UTC
End Time: 2026 Jul 30 1653 UTC
Peak Flux: 190 sfu
Duration: 17 minutes
Latest Penticton Noon Flux: 143 sfu
Comment:
· ·
30.Jul.2026 17:12 UTC · ALERT: Type II Radio Emission
Begin Time: 2026 Jul 30 1645 UTC
Estimate Velocity: 1681 km/s
Comment:
· ·
30.Jul.2026 17:11 UTC · ALERT: Type IV Radio Emission
Begin Time: 2026 Jul 30 1631 UTC
Comment:
· ·
30.Jul.2026 17:10 UTC · ALERT: Type II Radio Emission
Begin Time: 2026 Jul 30 1627 UTC
Estimate Velocity: 853 km/s
Comment:
· ·
27.Jul.2026 14:53 UTC · CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Continuation of Serial Number: 3721
Begin Time: 2026 Jul 26 1534 UTC
Yesterday Maximum 2MeV Flux: 1063 pfu
Max time: 2026 Jul 27 1445 UTC
· ·
27.Jul.2026 04:03 UTC · ALERT: Type II Radio Emission
Begin Time: 2026 Jul 27 0244 UTC
Estimate Velocity: 622 km/s
Comment:
· ·
26.Jul.2026 15:46 UTC · ALERT: Type II Radio Emission
Begin Time: 2026 Jul 26 1529 UTC
Estimate Velocity: 1057 km/s
Comment:
· ·
26.Jul.2026 15:35 UTC · ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Threshold Reached: 2026 Jul 26 1534 UTC
Station: GOES-19
Comment: Yesterday's max: 1077 pfu
· ·
24.Jul.2026 08:56 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5391
Valid From: 2026 Jul 23 1432 UTC
Now Valid Until: 2026 Jul 24 1500 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
23.Jul.2026 23:47 UTC · EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2251
Valid From: 2026 Jul 23 1619 UTC
Now Valid Until: 2026 Jul 24 0600 UTC
Warning Condition: Persistence
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23.Jul.2026 20:15 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 23 2007 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23.Jul.2026 16:40 UTC · WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Jul 23 1639 UTC
Valid To: 2026 Jul 23 2359 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment:
· NOAA Scale: G2 - Moderate ·
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
23.Jul.2026 16:21 UTC · ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 23 1621 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23.Jul.2026 16:20 UTC · WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jul 23 1619 UTC
Valid To: 2026 Jul 23 2359 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:
· NOAA Scale: G1 - Minor ·
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23.Jul.2026 15:59 UTC · ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jul 23 1547 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
23.Jul.2026 14:35 UTC · WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 23 1432 UTC
Valid To: 2026 Jul 24 0900 UTC
Warning Conditions: Onset
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
22.Jul.2026 19:25 UTC · WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jul 23: None (Below G1) Jul 24: G1 (Minor) Jul 25: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:
NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
22.Jul.2026 17:50 UTC · SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jul 22 1552 UTC
Maximum Time: 2026 Jul 22 1552 UTC
End Time: 2026 Jul 22 1552 UTC
Peak Flux: 150 sfu
Duration: 1 minutes
Latest Penticton Noon Flux: 149 sfu
Comment:
· ·
22.Jul.2026 14:56 UTC · WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 22 1454 UTC
Valid To: 2026 Jul 22 2359 UTC
Warning Conditions: Onset
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
22.Jul.2026 06:52 UTC · SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jul 22 0632 UTC
Maximum Time: 2026 Jul 22 0633 UTC
End Time: 2026 Jul 22 0634 UTC
Peak Flux: 200 sfu
Duration: 2 minutes
Latest Penticton Noon Flux: 149 sfu
Comment:
· ·
21.Jul.2026 17:09 UTC · EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5388
Valid From: 2026 Jul 21 0910 UTC
Now Valid Until: 2026 Jul 22 0600 UTC
Warning Condition: Persistence
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
21.Jul.2026 12:01 UTC · ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jul 21 1159 UTC
Synoptic Period: 0900-1200
Active Warning: YES
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
21.Jul.2026 09:11 UTC · WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 21 0910 UTC
Valid To: 2026 Jul 21 1800 UTC
Warning Conditions: Onset
Comment:
· NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
20.Jul.2026 14:42 UTC · CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Continuation of Serial Number: 3719
Begin Time: 2026 Jul 17 1750 UTC
Yesterday Maximum 2MeV Flux: 1039 pfu
Max time: 2026 Jul 20 1435 UTC
· ·