SPACE WEATHER INFORMATION AND FORECAST SERVICESS

Center for Space Research
The National Research and Innovation Agency
BRIN - Indonesia

2025 Nov 07

Geomagnet

Moderate Storm

Ionosphere

Quiet

Forecast

Geomagnet

Minor Storm

Ionosphere

Minor

Issued : 2025 November 08 0800 UTC
Forecast Valid For 24 Hours

ESSENTIAL INFORMATION FOR SPACE WEATHER COMMUNITIES

HF Radio Communication

MUF Depression

Shortwave Fadeout / Radio Blackout

Application

NAVIGATION

Error Positioning

SATELLITES

High Energy Proton

High Energy Electron

Detailed Information

Solar Activity

Solar activity was active in the last 24 hours.

There were 19 flares, with 18 C-class flares and 1 M-class flare in the previous 24 hours. The maximum flare class was M1.1, from NOAA 4276, which peaked at 4:31 UT. There were 5 type III solar radio bursts over the last 24 hours. There were 5 CME events in the previous 24 hours. The east-directed CME has the highest median velocity of 968 km/s, with an angular width of 6 degrees, and the west-directed CME has the highest median velocity of 320 km/s, with an angular width of 6 degrees. The latest SDO/HMI Intensitygram data shows 5 active regions (NOAA 4272, 4273, 4274, 4275, 4276), and the latest BBSO H-Alpha data shows 1 H-Alpha plage (NOAA 4271). Farside data shows 1 region returning from 07 Nov to 09 Nov from the east limb of the Solar disk.

Based on today's condition,
the solar activity for 7 November 2025, 04:00 UT - 8 November 2025, 03:59 UT is predicted to be a major flare.
the solar activity for 8 November 2025, 04:00 UT - 9 November 2025, 03:59 UT is predicted to be active.
the solar activity for 9 November 2025, 04:00 UT - 10 November 2025, 03:59 UT is predicted to be active.

Geomagnetic Activity

The geomagnetic activity was on a moderate storm level for the last 24 hours.

The solar wind speed increased from 337 km/s to 449 km/s, and the north-south component of the interplanetary magnetic field fluctuated between -16.8 nT and 10.0 nT. There was a geoeffective coronal hole at the central equator, while the others at the north-east and north pole were not geoeffective.

Moderate storm-level geomagnetic activity is expected for the next 24 hours.
Minor storm level geomagnetic activity is expected for 08 November 2025 07UT - 09 November 2025 07UT
Active level geomagnetic activity is expected for 09 November 2025 07UT - 10 November 2025 07UT

Ionospheric Activity

The ionospheric activity for the last 24 hours cannot be evaluated due to problems with the CADI station. The S4 index values (condition of ionospheric scintillation) was less than 0.5 and the maximum TEC index value was at 91.62, both observed over Pontianak.

The ionosphere activity on November 7th, 2025, 04:00 UT - November 8th, 2025, 03:59 UT is predicted to be moderate.  
The ionosphere activity on November 8th, 2025, 04:00 UT - November 9th, 2025, 03:59 UT is predicted to be minor.  
The ionosphere activity on November 9th, 2025, 04:00 UT - November 10th, 2025, 03:59 UT is predicted to be minor.

Navigation

The error of the single frequency GPS positioning for last 24 hours was in normal level, based on ionospheric scintilation and TEC variation.

Based on ionospheric scintilation and TEC variation, the probability of error positioning in November 7th, 2025, 04:00 UT - November 8th, 2025, 03:59 UT is predicted at a normal level.
Based on ionospheric scintilation and TEC variation, the probability of error positioning in November 8th, 2025, 04:00 UT - November 9th, 2025, 03:59 UT is predicted at a normal level.
Based on ionospheric scintilation and TEC variation, the probability of error positioning in November 9th, 2025, 04:00 UT - November 10th, 2025, 03:59 UT is predicted at a normal level.

HF Radio Communication

Maximum Usable Frequency (MUF) depression and Short Wave Fadeout (SWF) cannot be evaluated for the last 24 hours.

The MUF depression on November 7th, 2025, 04:00 UT - November 8th, 2025, 03:59 UT is predicted on strong level, due to previous of geomagnetic activity.
The MUF depression on November 8th, 2025, 04:00 UT - November 9th, 2025, 03:59 UT is predicted on moderate level, due to previous of geomagnetic activity.
The MUF depression on November 9th, 2025, 04:00 UT - November 10th, 2025, 03:59 UT is predicted on minor level, due to previous of geomagnetic activity.

The SWF on November 7th, 2025, 04:00 UT - November 8th, 2025, 03:59 UT is predicted in strong level due to the prediction of solar flare.
The SWF on November 8th, 2025, 04:00 UT - November 9th, 2025, 03:59 UT is predicted in minor level due to the prediction of solar flare. 
The SWF on November 9th, 2025, 04:00 UT - November 10th, 2025, 03:59 UT is predicted in minor level due to the prediction of solar flare.

Satellites

The electron flux was at a low level for the last 24 hours.

Low level of electron flux is expected for the next 24 hours.
Low level of electron flux is expected for 08 November 2025 07UT - 09 November 2025 07UT
High level of electron flux is expected for 09 November 2025 07UT - 10 November 2025 07UT

The flux of high-energy protons in the past 24 hours was quiet.

Based on today's condition, 
the flux of high-energy protons for 7 November 2025, 04:00 UT - 8 November 2025, 03:59 UT is predicted to be quiet.
the flux of high-energy protons for 8 November 2025, 04:00 UT - 9 November 2025, 03:59 UT is predicted to be quiet.
the flux of high-energy protons for 9 November 2025, 04:00 UT - 10 November 2025, 03:59 UT is predicted to be quiet.