[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (23 June 23) issued 0247 UT on 23 Jun 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 23 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (16 JUNE - 22 JUNE)
Date     16    17    18    19    20    21    22
10cm    157   158   164   169   180   176   173
AFr      24     8    12     9    13     9  (  8)
Aaus     17     6     6     7     5     3  (  7)
T       120   102   100    99    99   103   109

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

16 Jun 
Solar:        R1, with an M1.0 at 0530UT, an M1.0 at 1038UT, 
              and an M1.0 at 1959UT
Geomagnetic:  G2
Frequencies:  
   Cocos Island Region:
      Enhanced by 40% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 35% over the UT day.

17 Jun 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Depressed by 20% during local night.
      Enhanced by 25% after local dawn.
   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/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

18 Jun 
Solar:        R1, with an M1.3 at 0031UT, and an M2.5 at 
              1353UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

19 Jun 
Solar:        R1, with an M1.4 at 0350UT, and an M1.1 at 
              1214UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15-20% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

20 Jun 
Solar:        R3, with an M1.0 at 1114UT, an M1.8 at 1126UT, 
              an M1.0 at 1548UT, an M1.1 at 1633UT, and an X1.1 
              at 1709UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

21 Jun 
Solar:        R1, with an M1.1 at 1244UT, and an M1.0 at 
              1538UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 60% during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Depressed by 15% during local night.
      Enhanced by 30% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

22 Jun 
Solar:        R1, with an M1.1 at 1121UT, and an M4.8 at
              2344UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 60% during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Comment: Mostly G0 geomagnetic conditions were observed this week,
with an isolated period of G2 observed at Hobart on UT day 16-Jun. 
The planetary Kp also reached G2 geomagnetic conditions for a single
period on this day.

2. FORECAST (23 JUNE - 29 JUNE)
Solar:
Solar activity is expected to be at the R1 level this week, with a
chance of R2 level flaring. 

Geomagnetic:  
G0 geomagnetic conditions are expected this week.

Frequencies:  
Maximum Useable Frequencies (MUFs) are expected to be near predicted
monthly values this week.

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