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| Warnings and Alerts | |
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Issue Time: 2026 Nov 11 0501 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu Continuation of Serial Number: 3771 Begin Time: 2026 Nov 08 2245 UTC Yesterday Maximum 2MeV Flux: 6420 pfu Max time: 2026 Nov 10 1550 UTC Space Weather Scales |
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| Current Condition and Alerts | |
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Issued: 2026 Nov 11 1220 UTC
Prepared
by the US Dept. of Commerce, NOAA, Space Weather Prediction
Center
Geophysical Alert Message Solar-terrestrial indices for 10 November follow. Solar flux 132 and estimated planetary A-index 11. The estimated planetary K-index at 1200 UTC on 11 November was 2.33. No space weather storms were observed for the past 24 hours. Space weather for the next 24 hours is predicted to be moderate. Radio blackouts reaching the R2 level are likely. Space Weather Scales |
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| Forecast Discussion | |
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Issued: 2026 Nov 11 1230 UTC
Prepared
by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction
Center
Solar Activity .24 hr Summary... Solar activity was at low levels. Region 4566 (S07W41, Ekc/beta-gamma-delta) produced the majority of the C-class flares. Region 4566 displayed overall indications of weakening as the spot group decays, although the region still contains several small delta magnetic areas. Slight growth was observed in Regions 4568 (S09W22, Cso/beta) and newly numbered 4573 (N08E43, Dro/beta). Two additional regions were numbered this period: 4574 (N13E71, Cso/beta) and 4575 (S13E66, Hsx/alpha). No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... M-class flares (R1-R2/Minor-Moderate) are likely, with a slight chance for an X-class flare (R3-Strong), over 11-13 Nov. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels with a peak flux of 6,420 pfu observed at 10/1550 UTC. The greater than 10 MeV proton flux was at background levels. .Forecast... The greater than 2 MeV electron flux is likely to reach high levels over 11-13 Nov. There is a slight chance for the greater than 10 MeV proton flux to exceed S1 (Minor) levels over 11-13 Nov. Solar Wind .24 hr Summary... Solar wind parameters reflected continued, but diminishing influence, from a negative polarity CH HSS. Total field ranged from 2-5 nT while the Bz component was between +5/-3 nT. Solar wind speed decreased from approximately 705 km/s to near 600 km/s. Phi angle was mostly negative. .Forecast... The solar wind environment is expected to gradually diminish on 11-12 Nov. A return to nominal conditions is expected by 13 Nov. Geospace .24 hr Summary... The geomagnetic field was quiet to unsettled. .Forecast... Quiet to unsettled conditions are expected on 11-12 Nov as HSS activity gradually diminishes. Mostly quiet conditions are expected to return on 13 Nov. Space Weather Scales |
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| Three Day Forecast | |
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Issued: 2026 Nov 11 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 11-Nov 13 2026 is 3.00 (below NOAA Scale levels). NOAA Kp index breakdown Nov 11-Nov 13 2026 Nov 11 Nov 12 Nov 13 00-03UT 1.67 3.00 1.67 03-06UT 0.67 2.67 1.33 06-09UT 1.67 2.33 1.33 09-12UT 2.33 2.00 1.33 12-15UT 2.00 1.33 1.33 15-18UT 1.33 1.33 1.67 18-21UT 2.33 1.00 1.67 21-00UT 2.33 2.00 1.33 Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast. 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 11-Nov 13 2026 Nov 11 Nov 12 Nov 13 S1 or greater 15% 15% 15% Rationale: A slight chance for an S1 (Minor) event will persist through 13 Nov due to the current event potential and favorable location of Region 4566. C. NOAA Radio Blackout Activity and Forecast No radio blackouts were observed over the past 24 hours. Radio Blackout Forecast for Nov 11-Nov 13 2026 Nov 11 Nov 12 Nov 13 R1-R2 60% 60% 60% R3 or greater 15% 15% 15% Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a slight chance for an isolated R3 (Strong) event, through 13 Nov primarily due to the current flare potential exhibited by Region 4566. Space Weather Scales |
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| Weekly Highlights and Forecasts | |
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Issued: 2026 Nov 09 0258 UTC
Prepared
by the US Dept. of Commerce, NOAA, Space Weather Prediction
Center
Highlights of Solar and Geomagnetic Activity 02 - 08 November 2026 Solar activity reached Moderate (R1-Minor) levels following seven M-class flares, all originating from Region 4566 (S06, L=147, class/area Dkc/520 on 08 Nov). The largest of the period was an M3.5/2b that peaked at 05/1833 UTC. This event was accompanied by a Type II radio sweep (est. speed=609 km/s). The coinciding CME was determined to have a trajectory too far east to have any impacts at Earth. Additionally, 4566 produced the six following M-flares: an M1.2 at 07/1243 UTC, an M1.4 at 07/0717 UTC, an M1.9 at 07/1842 UTC, an M1.7/1f at 08/0746 UTC, an M1.1/1n at 08/1537 UTC, and an M1.1 at 08/1827 UTC. Region 4566 was also responsible for 75 of the 80 C-class flares during the period, with the largest registering a C8.9 at 08/0324 UTC. Region 4570 (S13, L=106, class/area Axx/010 on 07 Nov) added four C-flares and Region 4564 (N03, L=208, class/area Cro/030 on 05 Nov) contributed one. No proton events were observed at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit was at High levels every day of the period except 07 Nov, when it only reached Moderate levels. The peak value during the period was 4,631 pfu at 06/1720 UTC. Geomagnetic field activity was mostly quiet on 03 and 05 Nov, quiet to unsettled on 02, 04, and 06 Nov, and reached G1 (Minor) storm levels on 07-08 Nov. The increased activity at the end of the week was attributed to the onset of a negative polarity CH HSS. Forecast of Solar and Geomagnetic Activity 09 November - 05 December 2026 Solar activity is expected to be predominantly at low levels, with moderate levels likely and a slight chance of reaching high levels through 14 Nov when Region 4566 rotates off the visible disk. Barring development of any other substantial regions, conditions should then be at low levels, with a chance for moderate conditions through 28 Nov when Region 4566 is expected to return to the visible disk, bringing levels back to moderate again. There is a slight chance proton levels could increase to S1 levels at geosynchronous orbit through 14 Nov as Region 4566 transits the visible disk, then again after it returns around 28 Nov. The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at Moderate levels 15-18 Nov and 23-26 Nov, with High levels anticipated for 09-14 Nov, 19-22 Nov, and 27 Nov-05 Dec. Geomagnetic field activity is expected to be at mostly quiet levels on 13-15 Nov, 20-25 Nov, and 29 Nov-03 Dec. Unsettled to active periods are likely on 09-12 Nov, 16-19 Nov, 26-28 Nov, and 04-05 Dec, with G1 levels likely on 17,18, 27, and 28 Nov, and again on 04-05 Dec. The increased activity levels are attributed to CH HSS influences. 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. |
