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| Warnings and Alerts | |
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Issue Time: 2026 Nov 04 1904 UTC
WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Nov 05: None (Below G1) Nov 06: G1 (Minor) Nov 07: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT 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. Space Weather Scales |
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| Current Condition and Alerts | |
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Issued: 2026 Nov 05 1205 UTC
Prepared
by the US Dept. of Commerce, NOAA, Space Weather Prediction
Center
Geophysical Alert Message Solar-terrestrial indices for 04 November follow. Solar flux 111 and estimated planetary A-index 10. The estimated planetary K-index at 1200 UTC on 05 November was 1.33. No space weather storms were observed for the past 24 hours. No space weather storms are predicted for the next 24 hours. Space Weather Scales |
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| Forecast Discussion | |
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Issued: 2026 Nov 05 1230 UTC
Prepared
by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction
Center
Solar Activity .24 hr Summary... Solar activity reached low levels with two C-class flares in the past 24h: a C1.2 at 04/0654 UTC from Region 4566 (S06E40, Fai/beta-gamma-delta), and a C2.2 from a region beyond the SE limb. The background X-ray level raised during the period as the active regions on disk showed growth and a new region emerged and was numbered: Region 4567 (N17W41, Cro/beta). The other two regions on disk, 4564 (N03W14, Dro/beta) and 4565 (N15E08 Dsi/beta), gained trail spots and magnetic complexity during the period. No Earth-directed CMEs were observed in the available coronagraph imagery. .Forecast... Solar activity is expected to be at low levels, with a chance for M-class flares and a slight chance for X-class events on 05-07 Nov, mostly due to Regions 4565 and 4566 configuration and development. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux showed a sharp decrease at the beginning of the day, reflecting the stretched magnetotail, returning to high levels after 04/1410 UTC (the peak flux of 1,737 pfu occurred at 04/0040 UTC). The greater than 10 MeV proton flux remained at background levels. .Forecast... The greater than 2 MeV electron flux is expected to continue reaching high levels on 05 Nov, returning to moderate levels on 06-07 Nov. The greater than 10 MeV proton flux is expected to remain at background levels through 07 Nov. Solar Wind .24 hr Summary... Solar wind parameters reflected a mild disturbance likely associated with a high speed stream (HSS) from a small positive coronal hole (+CH) in the NW quadrant that was detected few days ago an is no longer identifiable in the EUV imagery. Solar wind speeds were elevated from 375 km/s level up to 425 km/s, while a slight increase in temperature with a simultaneous decrease in densities were observed. Total interplanetary magnetic field (IMF) strength oscillated around 7 nT and the Bz (north-south) component was mostly negative. Bz remained under -5 nT for a sustained period of 45 min around 04/0400 UTC, reaching as negative as -8 nT at 04/0424 UTC. Phi angle remained mostly in the positive sector (away from the Sun) in the past 24h. .Forecast... The solar wind near-Earth is expected to remain mildly disturbed on 05 Nov, as the geoeffective weak +CH/HSS wanes and a possible glancing blow influence of 01 Nov CME begins. Additional solar wind disturbances are likely on 06-07 Nov when a -CH/HSS is anticipated to impact the Geospace. Geospace .24 hr Summary... The geomagnetic activity has been quiet to unsettled for the past 24h. .Forecast... The geomagnetic field activity is expected to reach unsettled to active conditions on 05 Nov as the currently geoeffective weak +CH/HSS wanes and a possible glancing blow influence of 01 Nov CME occurs. Minor storming (G1) levels are likely on 06-07 Nov (with a slight chance for Moderate Storms - G2 - on 07 Nov), due to the anticipated influences of a negative polarity CH/HSS. Space Weather Scales |
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| Three Day Forecast | |
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Issued: 2026 Nov 05 1230 UTC
Prepared
by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction
Center
A. NOAA Geomagnetic Activity Observation and Forecast The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA Scale levels). The greatest expected 3 hr Kp for Nov 05-Nov 07 2026 is 5.00 (NOAA Scale G1). NOAA Kp index breakdown Nov 05-Nov 07 2026 Nov 05 Nov 06 Nov 07 00-03UT 1.33 2.33 5.00 (G1) 03-06UT 1.67 2.00 3.67 06-09UT 1.67 2.00 3.33 09-12UT 2.67 2.33 3.33 12-15UT 2.67 2.33 3.33 15-18UT 1.67 3.67 3.33 18-21UT 1.67 4.00 3.33 21-00UT 3.67 4.67 (G1) 3.33 Rationale: G1 (Minor) or greater geomagnetic storms are likely on 06-07 Nov due to CH HSS influences. B. NOAA Solar Radiation Activity Observation and Forecast Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was below S-scale storm level thresholds. Solar Radiation Storm Forecast for Nov 05-Nov 07 2026 Nov 05 Nov 06 Nov 07 S1 or greater 5% 5% 5% Rationale: No S1 (Minor) or greater solar radiation storms are expected. No significant active region activity favorable for radiation storm production is forecast. C. NOAA Radio Blackout Activity and Forecast No radio blackouts were observed over the past 24 hours. Radio Blackout Forecast for Nov 05-Nov 07 2026 Nov 05 Nov 06 Nov 07 R1-R2 30% 35% 35% R3 or greater 10% 10% 10% Rationale: There is a chance for R1-R2 (Minor-Moderate) or greater radio blackouts, and a slight chance for R3 (Strong) or greater blackouts all three days. Space Weather Scales |
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| Weekly Highlights and Forecasts | |
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Issued: 2026 Nov 02 0217 UTC
Prepared
by the US Dept. of Commerce, NOAA, Space Weather Prediction
Center
Highlights of Solar and Geomagnetic Activity 26 October - 01 November 2026 Solar activity was at low levels with nine C-Class flares observed. Region 4561 (S11, L=28, class/area=Dai/030 on 26 Oct) produced the largest event of the period: a C2.8 flare at 26/1840 UTC, as well as nearly all of the remaining C-class flares of the period. The only exception was a C1.5 flare at 26/0134 UTC from Region 4560 (N13, L=49, class/area=Fao/020 on 26 Oct). The only notable CME activity was from a filament lift off at approximately 26/2142 UTC from an area near N30E75. Analysis indicated mostly a miss, though a glancing blow was not ruled out of the question on 31 Oct. No proton events were observed at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels throughout the period, with the exception of 31 Oct when values dropped to moderate levels. Geomagnetic field activity was at quiet levels 26-29 Oct, quiet to active levels on 30 Oct, unsettled to G2 (Moderate) levels on 31 Oct, and quiet to G1 (Minor) levels on 01 Nov. Activity increased the last two days as a result of the onset of a positive polarity CH HSS combined with possible CME effects mixed in from the 26 Oct filament eruption. Forecast of Solar and Geomagnetic Activity 02 November - 28 November 2026 Solar activity is expected to be predominantly at low levels, with a slight chance to a chance for isolated M-class (R1-R2/Minor-Moderate) radio blackouts) flare activity associated with any developing spot groups during the period. No proton events are expected at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at moderate levels on 02 Nov and 06-18 Nov. Flux levels are anticipated to reach high levels on 03-05 Nov and 19-28 Nov. Geomagnetic field activity is expected to be at mostly quiet levels on 03-04 Nov, 08 Nov, 13-15 Nov, and 20-25 Nov. Unsettled to active periods are anticipated on 02 Nov, 05-07 Nov, 09-12 Nov, and 26 Nov. An increase to G1, possibly G2 geomagnetic storm levels is likely on 27-28 Nov. The increase in activity is associated with multiple recurrent coronal holes. Space Weather Scales |
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| About AIA Images | |
| The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) is designed to provide an unprecedented view of the solar corona, taking images that span at least 1.3 solar diameters in multiple wavelengths nearly simultaneously, at a resolution of ~ 1 arcsec and at a cadence of 10 s or better. The primary goal of the AIA Science Investigation is to use these data, together with data from other SDO instruments and from other observatories, to significantly improve our understanding of the physics behind the activity displayed by the Sun's atmosphere, which drives space weather in the heliosphere and in planetary environments. The AIA will produce data required for quantitative studies of the evolving coronal magnetic field, and the plasma that it holds, both in quiescent phases and during flares and eruptions; the AIA science investigation aims to utilize these data in a comprehensive research program to provide new understanding of the observed processes Left Click Image for screen size, Right Click Image and open in new tab for full size. | |
| Daily Image AIA 171 | |
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| Daily Image AIA 171 PFSS Model | |
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| Daily Image AIA 193 | |
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| Daily Image AIA 304 | |
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| Daily Video AIA 171 | |
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| Daily Video AIA 171 PFSS Model | |
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| Daily Video AIA 193 | |
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| Daily Video AIA 304 | |
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| About the HMI Images | |
| (Helioseismic and Magnetic Imager) HMI is an instrument designed to study oscillations and the magnetic field at the solar surface, or photosphere. HMI is one of three instruments on the Solar Dynamics Observatory; together, the suite of instruments observes the Sun nearly continuously and takes a terabyte of data a day. HMI observes the full solar disk at 6173 Å with a resolution of 1 arcsecond. HMI is a successor to the Michelson Doppler Imager on the Solar and Heliospheric Observatory. This is very much how the Sun looks like in the visible range of the spectrum (for example, looking at it using special 'eclipse' glasses: Remember, do not ever look directly at the Sun!). The magnetogram image shows the magnetic field in the solar photosphere, with black and white indicating opposite polarities. Left Click Image for screen size, Right Click Image and open in new tab for full size. | |
| Daily Image HMI Continuum | |
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| Daily Image HMI Magnetogram | |
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| Daily Video HMI Continuum | |
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| Daily Video HMI Magnetogram | |
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| About LASCO Images | |
| LASCO (Large Angle Spectrometric Coronagraph) is able to take images of the solar corona by blocking the light coming directly from the Sun with an occulter disk, creating an artificial eclipse within the instrument itself. The position of the solar disk is indicated in the images by the white circle. The most prominent feature of the corona are usually the coronal streamers, those nearly radial bands that can be seen both in C2 and C3. Occasionally, a coronal mass ejection can be seen being expelled away from the Sun and crossing the fields of view of both coronagraphs. The shadow crossing from the lower left corner to the center of the image is the support for the occulter disk. C2 images show the inner solar corona up to 8.4 million kilometers (5.25 million miles) away from the Sun. C3 images have a larger field of view: They encompass 32 diameters of the Sun. To put this in perspective, the diameter of the images is 45 million kilometers (about 30 million miles) at the distance of the Sun, or half of the diameter of the orbit of Mercury. Many bright stars can be seen behind the Sun. Left Click Image for screen size, Right Click Image and open in new tab for full size. | |
| Combined C2 C3 and AIA 304 | |
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| Log Polar View C2 C3 and AIA 304 | |
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| Combined C2 C3 and AIA 304 Video | |
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| Log Polar View C2 C3 and AIA 304 Video | |
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| Space Weather Videos | |
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| Space Weather Information | |
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Demystifying Space Weather An article by Scientific Frontline Informative information and glossary about “Space Weather” Space weather has become increasingly important in our modern world due to our growing reliance on technology. It can impact various aspects of our daily lives, from communication and navigation systems to power grids and even astronaut safety. In this deep dive, we'll explore the intricacies of space weather, its causes, its effects, and why understanding it is crucial in our technology-dependent society. |
