Solar activity report

Viewing archive of Wednesday, 7 November 2018

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

Report of Solar-Geophysical Activity 2018 Nov 07 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 311 Issued at 2200Z on 07 Nov 2018

IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z

Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk.

IB. Solar Activity Forecast

Solar activity is expected to be very low on days one, two, and three (08 Nov, 09 Nov, 10 Nov).

IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z

The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 459 km/s at 07/1835Z. Total IMF reached 7 nT at 07/1756Z. The maximum southward component of Bz reached -6 nT at 07/1832Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 10832 pfu.

IIB. Geophysical Activity Forecast

The geomagnetic field is expected to be at quiet levels on day one (08 Nov) and quiet to minor storm levels on days two and three (09 Nov, 10 Nov).

III. Event Probabilities 08 Nov to 10 Nov

Class M	01%	01%	01%
Class X	01%	01%	01%
Proton	01%	01%	01%
PCAF	green

IV. Penticton 10.7 cm Flux

  Observed       07 Nov 069
  Predicted   08 Nov-10 Nov 070/070/070
  90 Day Mean        07 Nov 069

V. Geomagnetic A Indices

  Observed Afr/Ap 06 Nov  009/007
  Estimated     Afr/Ap 07 Nov  008/009
  Predicted    Afr/Ap 08 Nov-10 Nov  006/005-011/016-014/018

VI. Geomagnetic Activity Probabilities 08 Nov to 10 Nov

A. Middle Latitudes
Active	10%	35%	35%
Minor storm	01%	25%	25%
Major-severe storm	01%	05%	05%

B. High Latitudes
Active	15%	10%	10%
Minor storm	20%	25%	25%
Major-severe storm	15%	55%	60%

All times in UTC

Previous rotation Previous day Calendar

Next day Next rotation

<< Go to daily overview page

G4 - Severe geomagnetic storm

Observed Kp: 8
Threshold reached: 20:54 UTC

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Oulu, Rovaniemi, Kuopio
Trondheim
Arkhangelsk
Luleå, Sundsvall, Umeå

The density of the solar wind is moderate (20.34 p/cm³)

The strength of the interplanetary magnetic field is moderate (13.37nT), the direction is North (5.79nT).

The Disturbance Storm Time index predicts strong storm conditions right now (-134nT)

Latest news

Tuesday, 15 April 2025

CME arrival, G3 storm watch

Friday, 28 March 2025

X1.1 solar flare

Monday, 24 March 2025

Coronal hole faces Earth

More news

Latest forum messages

2025/04/12-13 Filament CMEs 2025/04/16 G3 Watch 379 AR4064 6 Incoming & Unnumbered Active Regions 1739 AR 4060 31 AR4062 32

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

Donate SpaceWeatherLive Pro