Viewing archive of Tuesday, 15 August 2023

Solar activity report

Report of Solar-Geophysical Activity 2023 Aug 15 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 227 Issued at 2200Z on 15 Aug 2023

IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z

Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C4 event observed at 15/0657Z from Region 3395 (N12W87). There are currently 7 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with a slight chance for an M-class flare on days one, two, and three (16 Aug, 17 Aug, 18 Aug).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 336 km/s at 15/0327Z. Total IMF reached 7 nT at 15/1717Z. The maximum southward component of Bz reached -4 nT at 15/1717Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 899 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on days one and two (16 Aug, 17 Aug) and quiet to unsettled levels on day three (18 Aug).
III. Event Probabilities 16 Aug to 18 Aug
Class M15%15%15%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       15 Aug 158
  Predicted   16 Aug-18 Aug 160/160/155
  90 Day Mean        15 Aug 167

V. Geomagnetic A Indices
  Observed Afr/Ap 14 Aug  006/006
  Estimated     Afr/Ap 15 Aug  005/005
  Predicted    Afr/Ap 16 Aug-18 Aug  009/012-014/015-010/012

VI. Geomagnetic Activity Probabilities 16 Aug to 18 Aug
A. Middle Latitudes
Active30%35%20%
Minor storm05%10%05%
Major-severe storm01%01%01%
B. High Latitudes
Active25%15%15%
Minor storm25%20%20%
Major-severe storm20%30%20%

All times in UTC

<< Go to daily overview page

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!

100%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/10/31X2.0
Last M-flare2024/11/05M2.6
Last geomagnetic storm2024/10/12Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2024141.4 -74.1
November 2024215.8 +74.4
Last 30 days161.1 +7.2

This day in history*

Solar flares
12013X4.93
21998X1.21
32014X1.14
42003M7.6
52004M5.72
DstG
12023-172G3
21991-92G2
31986-74G1
41959-73G1
51993-71G1
*since 1994

Social networks