[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (13 March 26) issued 0226 UT on 13 Mar 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 13 MARCH 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (06 MARCH - 12 MARCH)
Date     06    07    08    09    10    11    12
10cm    143   143   135   128   127   124   121
AFr       3    11    14     5    11     7  (  7)
Aaus      6    12    12     5     7     6  (  8)
T       117   113   104    96   107    99    92

Solar:        Solar flare activity
Geomagnetic:  Geomagnetic activity observed for Australian region.
Frequencies:  Australian ionospheric F2 critical frequencies

06 Mar 
Solar:        R0
Geomagnetic:  G0
In the BOM magnetometer data for 06 Mar, a weak (8nT) impulse 
was observed at 0535UT.
Frequencies:  
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 55% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 30% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 20% over the UT day.

07 Mar 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 35% during local night.
      Enhanced by 30% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

08 Mar 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Mostly near predicted monthly values.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 40% during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

09 Mar 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 45% during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

10 Mar 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 25% during local night.
   Niue Island Region:
      Enhanced by 30% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

11 Mar 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

12 Mar 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (13 MARCH - 19 MARCH)
Solar: 
R0 conditions are expected throughout 13-19 Mar, with a chance of
R1 conditions. No previously flare-active regions are expected to
return to the front side of the solar disk over the next week.

Geomagnetic:  
G1 geomagnetic conditions, with a chance of G2, are expected on 
14-Mar due to a recurrent transequatorial coronal hole high-speed
wind stream. G0-G1 conditions are expected on 15-Mar due to ongoing
high-speed wind stream effects. G0, with a slight chance of G1, is
forecast for 19-Mar due to a potentially returning coronal hole. G0
conditions are expected on all other days.


Frequencies:  
Maximum Usable Frequencies (MUFs) are expected to become depressed
after local dawn on 14-Mar, and remain depressed on 14-15 Mar due
to the forecast geomagnetic activity. MUFs may become slightly 
depressed late on 19-Mar. MUFs are expected to remain near 
predicted monthly values on other days.


For an explanation of some of the terms in this report, go to
https://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au