Viewing archive of Monday, 23 September 2013

Solar activity report

Report of Solar-Geophysical Activity 2013 Sep 23 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 266 Issued at 2200Z on 23 Sep 2013

IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z

Solar activity has been at very low levels for the past 24 hours. There are currently 5 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low on days one, two, and three (24 Sep, 25 Sep, 26 Sep).
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 425 km/s at 23/0304Z. Total IMF reached 5 nT at 23/0844Z. The maximum southward component of Bz reached -4 nT at 23/1643Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1893 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on day one (24 Sep) and quiet levels on days two and three (25 Sep, 26 Sep).
III. Event Probabilities 24 Sep to 26 Sep
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       23 Sep 108
  Predicted   24 Sep-26 Sep 108/108/108
  90 Day Mean        23 Sep 111

V. Geomagnetic A Indices
  Observed Afr/Ap 22 Sep  006/007
  Estimated     Afr/Ap 23 Sep  005/005
  Predicted    Afr/Ap 24 Sep-26 Sep  008/008-004/005-004/005

VI. Geomagnetic Activity Probabilities 24 Sep to 26 Sep
A. Middle Latitudes
Active10%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm25%15%15%
Major-severe storm10%05%05%

<< 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!

0%

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2020:11
Current stretch spotless days:9

This day in history*

Solar flares
12005X1.3
22005M6.7
32012M3.2
42005M2.7
52010M2.3
ApG
1200560G3
2199425G1
3200418
4200318
5200214
*since 1994

Social networks