[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (29 March 24) issued 0101 UT on 29 Mar 2024 [SEC=OFFICIAL]

Fri Mar 29 12:01:38 EST 2024

SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 29 MARCH 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (22 MARCH - 28 MARCH)
Date     22    23    24    25    26    27    28
10cm    198   209   195   190   178   175   173
AFr      10    25    43    17    11     7  (  5)
Aaus     10    20    36    23     7     6  (  6)
T       116   129    96    94   116   126   137

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

22 Mar 
Solar:        R1, with an M4.3 at 2032UT
Geomagnetic:  G0
In the BOM magnetometer data for 22 Mar, a weak (10nT) impulse 
was observed at 1112UT.
Frequencies:  
   Cocos Island Region:
      Depressed by 15%.
   Niue Island Region:
      Near predicted monthly values to 15% enhanced.
   Northern Australian Region:
      Near predicted monthly values.
      Learmonth MUFs depressed 15-35% local day.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Perth MUFs depressed 15-30% local day.
      Enhanced by 15% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15-30% over the UT day.

23 Mar 
Solar:        R3, with an X1.1 at 0134UT, an M1.2 at 0434UT, 
              an M1.1 at 0655UT, an M2.4 at 0709UT, an M3.1 at 
              0739UT, an M1.0 at 1129UT, an M1.3 at 1247UT, an 
              M1.9 at 1337UT, an M5.2 at 1352UT, and an M2.4 
              at 2349UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 50% during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.
      Proton event in progress, increased absorption observed.

24 Mar 
Solar:        R1, with an M2.4 at 2349UT, an M1.4 at 0125UT, 
              an M2.0 at 0152UT, an M2.7 at 0218UT, an M1.1 at 
              0403UT, an M2.2 at 0606UT, an M1.3 at 0751UT, an 
              M1.1 at 1218UT, an M1.0 at 1234UT, and an M1.2 
              at 1314UT
Geomagnetic:  G2
In the BOM magnetometer data for 24 Mar, a moderate (71nT) impulse 
was observed at 1436UT.
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 30% during local day.
      Near predicted monthly values during local night.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      No data available over the UT day.
      Proton event in progress, increased absorption observed.

25 Mar 
Solar:        R1, with an M4.4 at 0644UT
Geomagnetic:  G1
Frequencies:  
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
      Enhanced by 45% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Depressed by 25% during local day.
      Depressed by 20% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 30% over the UT day.

26 Mar 
Solar:        R1, with an M1.8 at 0036UT, an M1.0 at 1017UT, 
              an M1.3 at 1043UT, an M1.9 at 1330UT, and an M1.6 
              at 2158UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 15% 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.

27 Mar 
Solar:        R1, with an M1.1 at 0144UT, and an M1.1 at 
              0641UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% 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/Davis/Mawson):
      Near predicted monthly values over the UT day.

28 Mar 
Solar:        R3, with an M7.1 at 0629UT, an M6.1 at 1556UT, 
              an M1.1 at 1931UT, an M9.7 at 2046UT, and an X1.1 
              at 2056UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 55% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

2. FORECAST (29 MARCH - 04 APRIL)
Solar: 
Solar activity is expected to be at the R2 level, with a chance of
R3 early in the week. Solar activity is expected to decline to R0-R1
levels by the end of the week, once AR3615 has rotated over the 
western limb. 

Geomagnetic:  
G0 geomagnetic conditions are expected this week. 

Frequencies:  
Maximum Usable Frequencies (MUFs) are expected to be near predicted
monthly values to 15% enhanced this week. Shortwave fadeouts are
probably in the first half of the week, tending to possible later 
in the 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