[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (26 July 24) issued 0139 UT on 26 Jul 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 26 JULY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (19 JULY - 25 JULY)
Date     19    20    21    22    23    24    25
10cm    202   207   198   185   176   175   167
AFr       5     8     9     9     8     8  (  6)
Aaus      2     3     2     7     2     3  (  5)
T       139   128   143   138   146   135   132

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

19 Jul 
Solar:        R1, with an M3.2 at 0823UT, an M2.0 at 1806UT, 
              and an M1.0 at 2252UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 90% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 30% over the UT day.

20 Jul 
Solar:        R1, with an M1.0 at 2252UT, an M1.8 at 0720UT, 
              and an M1.5 at 1849UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 50% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 30% over the UT day.

21 Jul 
Solar:        R1, with an M1.4 at 0355UT, an M1.5 at 0834UT, 
              an M1.0 at 1632UT, and an M3.2 at 2328UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 30% during local day.
      Enhanced by 75% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 25% over the UT day.

22 Jul 
Solar:        R1, with an M3.2 at 2328UT, an M1.4 at 0333UT, 
              an M3.9 at 0404UT, an M1.9 at 0434UT, an M1.4 at 
              0935UT, and an M1.4 at 1258UT
Geomagnetic:  G0
In the BOM magnetometer data for 22 Jul, a weak (9nT) impulse 
was observed at 1105UT.
Frequencies:  
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 70% 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 during local day.
      Enhanced by 30% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Jul 
Solar:        Moderate, with an M2.4 at 1428UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 65% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 45% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Southern Australian Region:
      Enhanced by 15-20%.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.
      Proton event in progress, increased absorption observed.

24 Jul 
Solar:        R1, with an M3.6 at 0742UT, and an M3.0 at 
              1721UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 20% over the UT day.

25 Jul 
Solar:        R1, with an M1.3 at 1537UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 40% during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 25% over the UT day.

 
2. FORECAST (26 JULY - 01 AUGUST)
Solar: 
R0-R1 with a chance for R2 in early week. Possibly chance for R3 by late week. 

Geomagnetic:  
G0 with a chance for G1 over 26-28 Jul. G0 on other days.

Frequencies:  
briefly depressed after local dawn on 27 Jul
MUFs 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