[Ips-wsgr] SWS Weekly Solar and Geophysical Report (24 December 21) issued 0025 UT on 24 Dec 2021
rwc
rwc at ips.gov.au
Fri Dec 24 11:25:21 EST 2021
SUBJ: SWS WEEKLY SOLAR AND GEOPHYSICAL REPORT
ISSUED ON 24 DECEMBER 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (17 DECEMBER - 23 DECEMBER)
Date 17 18 19 20 21 22 23
10cm 121 121 115 123 137 140 130
AFr 2 2 8 13 7 8 ( 9)
Aaus 2 3 15 12 7 7 ( ??)
T 48 58 51 33 61 77 53
Solar: Solar flare activity
Geomagnetic: Geomagnetic activity observed for Australian region.
Frequencies: Australian ionospheric F2 critical frequencies
17 Dec
Solar: Moderate, with an M1.2 at 0051UT
Geomagnetic: Quiet
Frequencies:
Cocos Island Region:
Mostly near predicted monthly values.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Enhanced by 15% during local day.
Enhanced by 30% 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 Dec
Solar: Low
Geomagnetic: Quiet
Frequencies:
Cocos Island Region:
Enhanced by 15% during local day.
Enhanced by 25% 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 during local day.
Enhanced by 20% 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.
19 Dec
Solar: Low
Geomagnetic: Quiet to Minor Storm
Frequencies:
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Enhanced by 20% after local dawn.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Enhanced by 15% during local day.
Enhanced by 40% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Depressed by 20% after local dawn.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
20 Dec
Solar: Moderate, with an M1.8 at 1139UT
Geomagnetic: Quiet to Active
In the SWS magnetometer data for 20 Dec, a weak (9nT) impulse
was observed at 1434UT.
Frequencies:
Cocos Island Region:
Mostly near predicted monthly values.
Enhanced by 25% after local dawn.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 25% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Depressed by 25% during local day.
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
21 Dec
Solar: Moderate, with an M1.1 at 0750UT, and an M1.4 at
1144UT
Geomagnetic: Quiet to Unsettled
Frequencies:
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Enhanced by 20% after local dawn.
Northern Australian Region:
Enhanced by 15% during local day.
Enhanced by 20% 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.
22 Dec
Solar: Moderate, with an M1 at 0706UT
Geomagnetic: Quiet to Unsettled
Frequencies:
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Enhanced by 30% during local day.
Enhanced by 45% during local night.
Northern Australian Region:
Enhanced by 25% during local day.
Enhanced by 25% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
23 Dec
Solar: Low
Geomagnetic: Quiet
Frequencies:
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Niue Island Region:
Enhanced by 30% during local day.
Enhanced by 25% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
2. FORECAST (24 DECEMBER - 30 DECEMBER)
Solar:
Low, with chance of isolated M-class flares
Geomagnetic:
Quiet to unsettled conditions.
Frequencies:
MUFs near predicted monthly values.
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.
Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386 WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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