Forecast Heatmaps
L1 to Earth propagation - colour = forecast severity on arrival
Oct 18 00:49 - 01:40 UTCNOAA Alerts
Geomagnetic Storm Category G1 Predicted
Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. 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.
Show original
Space Weather Message Code: WATA20 Serial Number: 1130 Issue Time: 2026 Oct 17 2014 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Oct 18: None (Below G1) Oct 19: None (Below G1) Oct 20: 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 Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. 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.
Geomagnetic K-index of 4
Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Show original
Space Weather Message Code: ALTK04 Serial Number: 2691 Issue Time: 2026 Oct 16 1939 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2026 Oct 16 1940 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 Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Geomagnetic K-index of 4 expected
Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Show original
Space Weather Message Code: WARK04 Serial Number: 5436 Issue Time: 2026 Oct 16 1938 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2026 Oct 16 1938 UTC Valid To: 2026 Oct 17 0300 UTC Warning Conditions: Onset Comment: NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Electron 2MeV Integral Flux exceeded 1,000pfu
Show original
Space Weather Message Code: ALTEF3 Serial Number: 3754 Issue Time: 2026 Oct 16 1419 UTC ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu Threshold Reached: 2026 Oct 16 1345 UTC Station: GOES-19 Comment:
Geomagnetic Storm Category G2 Predicted
Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. 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.
Show original
Space Weather Message Code: WATA30 Serial Number: 286 Issue Time: 2026 Oct 11 1702 UTC CANCEL WATCH: Geomagnetic Storm Category G2 Predicted Cancel Serial Number: 285 Original Issue Time: 2026 Oct 09 1636 UTC Cancelled Level Predicted: Oct 11 : None (Below G1) Conditions no longer warrant a G2 Watch. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. 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.
Geomagnetic K-index of 5
Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. 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.
Show original
Space Weather Message Code: ALTK05 Serial Number: 2057 Issue Time: 2026 Oct 10 2145 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2026 Oct 10 2145 UTC Synoptic Period: 2100-2400 Active Warning: YES Noaa Scale: G1 - Minor Comment: NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. 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.
Geomagnetic K-index of 7
Show original
Space Weather Message Code: ALTK07 Serial Number: 220 Issue Time: 2026 Oct 10 1927 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2026 Oct 10 1926 UTC Synoptic Period: 1800-2100 Active Warning: YES Noaa Scale: G3 - Strong Comment: NOAA Scale: G3 - Strong
Geomagnetic K-index of 6
Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. 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.
Show original
Space Weather Message Code: ALTK06 Serial Number: 728 Issue Time: 2026 Oct 10 1837 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2026 Oct 10 1837 UTC Synoptic Period: 1800-2100 Active Warning: YES Noaa Scale: G2 - Moderate Comment: NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. 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.
Geomagnetic K-index of 7 or greater expected
Show original
Space Weather Message Code: WARK07 Serial Number: 153 Issue Time: 2026 Oct 10 1742 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2026 Oct 10 1742 UTC Valid To: 2026 Oct 10 2359 UTC Warning Conditions: Onset Noaa Scale: G3 - Greater Comment: NOAA Scale: G3 - Greater
X-ray Event exceeded M5
Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth. Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Show original
Space Weather Message Code: SUMXM5 Serial Number: 328 Issue Time: 2026 Oct 10 1527 UTC SUMMARY: X-ray Event exceeded M5 Begin Time: 2026 Oct 10 1458 UTC Maximum Time: 2026 Oct 10 1510 UTC End Time: 2026 Oct 10 1520 UTC Xray Class: M6.4 Optical Class: Location: N08W50 Noaa Scale: R2 - Moderate Comment: NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth. Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Type II Radio Emission
Show original
Space Weather Message Code: ALTTP2 Serial Number: 1532 Issue Time: 2026 Oct 10 1526 UTC ALERT: Type II Radio Emission Begin Time: 2026 Oct 10 1515 UTC Estimate Velocity: 929 km/s Comment:
Geomagnetic Sudden Impulse
Show original
Space Weather Message Code: SUMSUD Serial Number: 303 Issue Time: 2026 Oct 10 1524 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2026 Oct 10 1516 UTC Deviation: 56 nT Station: NGK Comment:
10cm Radio Burst
Show original
Space Weather Message Code: SUM10R Serial Number: 929 Issue Time: 2026 Oct 10 1519 UTC SUMMARY: 10cm Radio Burst Begin Time: 2026 Oct 10 1505 UTC Maximum Time: 2026 Oct 10 1506 UTC End Time: 2026 Oct 10 1509 UTC Peak Flux: 240 sfu Duration: 4 minutes Latest Penticton Noon Flux: 121 sfu Comment:
X-Ray Flux exceeded M5
Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Show original
Space Weather Message Code: ALTXMF Serial Number: 543 Issue Time: 2026 Oct 10 1509 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2026 Oct 10 1507 UTC Noaa Scale: R2 - Moderate Comment: NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Geomagnetic K-index of 6 expected
Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. 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.
Show original
Space Weather Message Code: WARK06 Serial Number: 672 Issue Time: 2026 Oct 10 1504 UTC WARNING: Geomagnetic K-index of 6 expected Valid From: 2026 Oct 10 1503 UTC Valid To: 2026 Oct 10 2359 UTC Warning Conditions: Onset Noaa Scale: G2 - Moderate Comment: NOAA Scale: G2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. 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.
Geomagnetic Sudden Impulse expected
Show original
Space Weather Message Code: WARSUD Serial Number: 259 Issue Time: 2026 Oct 10 1445 UTC WARNING: Geomagnetic Sudden Impulse expected Valid From: 2026 Oct 10 1510 UTC Valid To: 2026 Oct 10 1550 UTC Ip Shock: 2026-10-10 14:43 Comment:
Geomagnetic K-index of 5 expected
Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. 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.
Show original
Space Weather Message Code: WARK05 Serial Number: 2270 Issue Time: 2026 Oct 10 1442 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2026 Oct 10 1440 UTC Valid To: 2026 Oct 11 0300 UTC Warning Conditions: Onset Noaa Scale: G1 - Minor Comment: NOAA Scale: G1 - Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. 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.
Type IV Radio Emission
Show original
Space Weather Message Code: ALTTP4 Serial Number: 719 Issue Time: 2026 Oct 08 1644 UTC ALERT: Type IV Radio Emission Begin Time: 2026 Oct 08 1612 UTC Comment: Type IV recorded by Sagamore Hill RSTN site
Diagnóstico · disponibilidad de datos · supuestos del modelo
Data Readiness
Some required real inputs are not available.
Model Assumptions
MRU Arrival Model
Physical Flags
Orbit Classification
No fake data, no random values, no numerical risk score, and no radiation dose are generated.