Viewing archive of Friday, 13 October 2023

Solar activity report

Report of Solar-Geophysical Activity 2023 Oct 13 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 286 Issued at 2200Z on 13 Oct 2023

IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z

Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 13/1609Z. There are currently 6 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (14 Oct, 15 Oct, 16 Oct).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 510 km/s at 13/1710Z. Total IMF reached 24 nT at 13/0829Z. The maximum southward component of Bz reached -11 nT at 13/1442Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 189 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (14 Oct, 15 Oct) and quiet levels on day three (16 Oct).
III. Event Probabilities 14 Oct to 16 Oct
Class M25%25%25%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       13 Oct 149
  Predicted   14 Oct-16 Oct 150/150/145
  90 Day Mean        13 Oct 159

V. Geomagnetic A Indices
  Observed Afr/Ap 12 Oct  003/002
  Estimated     Afr/Ap 13 Oct  011/011
  Predicted    Afr/Ap 14 Oct-16 Oct  008/010-008/008-005/005

VI. Geomagnetic Activity Probabilities 14 Oct to 16 Oct
A. Middle Latitudes
Active25%20%10%
Minor storm10%05%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm25%25%20%
Major-severe storm40%30%15%

All times in UTC

<< Go to daily overview page

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

Fairbanks, AK

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

Gillam, MB, Whitehorse, YT, Yellowknife, NT
Anchorage, AK, Juneau, AK, Utqiagvik, AK

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

Edmonton, AB, Saskatoon, SK

Latest news

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
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

10:00 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 78GW at 10:32 UTC


04:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 04:05 UTC

alert


03:15 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 02:59 UTC

alert


01:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 00:51 UTC

alert


Friday, 4 April 2025
23:30 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:17 UTC

alert


Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.5
Last geomagnetic storm2025/04/04Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025148 +13.8
Last 30 days130.9 -15.2

This day in history*

Solar flares
12001X1.21
22001M7.3
32001M4.52
42013M3.28
52004M2.47
DstG
11993-165G3
21968-112G3
31978-109G1
41984-108G2
51989-101G2
*since 1994

Social networks