Viewing archive of Tuesday, 24 September 2013

Solar activity report

Report of Solar-Geophysical Activity 2013 Sep 24 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 267 Issued at 2200Z on 24 Sep 2013

IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z

Solar activity has been at very low levels for the past 24 hours. There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low on days one, two, and three (25 Sep, 26 Sep, 27 Sep).
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 455 km/s at 24/1954Z. Total IMF reached 12 nT at 24/1201Z. The maximum southward component of Bz reached -9 nT at 24/1108Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 838 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on days one, two, and three (25 Sep, 26 Sep, 27 Sep).
III. Event Probabilities 25 Sep to 27 Sep
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       24 Sep 110
  Predicted   25 Sep-27 Sep 110/110/110
  90 Day Mean        24 Sep 111

V. Geomagnetic A Indices
  Observed Afr/Ap 23 Sep  004/006
  Estimated     Afr/Ap 24 Sep  008/010
  Predicted    Afr/Ap 25 Sep-27 Sep  004/007-004/005-004/005

VI. Geomagnetic Activity Probabilities 25 Sep to 27 Sep
A. Middle Latitudes
Active05%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm15%15%15%
Major-severe storm05%05%05%

<< Go to daily overview page

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!

64%

Space weather facts

Last X-flare2017/09/10X8.2
Last M-flare2020/05/29M1.1
Last geomagnetic storm2020/04/20Kp5 (G1)
Spotless days
Last 365 days310 days
2020142 days (77%)
Current stretch18 days

This day in history*

Solar flares
12002X1.5
22002M5.3
32015M1.5
42013M1.5
52017M1.3
ApG
1200319G1
2199411
3199610
420129
519999
*since 1994

Social networks