[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (20 December 24) issued 0124 UT on 20 Dec 2024 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Fri Dec 20 12:24:39 AEDT 2024
SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT
ISSUED ON 20 DECEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
1. SUMMARY (13 DECEMBER - 19 DECEMBER)
Date 13 14 15 16 17 18 19
10cm 164 171 172 167 170 174 175
AFr 2 8 9 11 20 12 ( 9)
Aaus 3 7 9 9 34 12 ( 6)
T 151 141 113 115 121 63 111
Solar: Solar flare activity
Geomagnetic: Geomagnetic activity observed for Australian region.
Frequencies: Australian ionospheric F2 critical frequencies
13 Dec
Solar: R1, with an M1.0 at 0318UT, an M2.1 at 1124UT,
and an M1.0 at 1424UT
Geomagnetic: G0
Frequencies:
Cocos Island Region:
Enhanced by 25% during local day.
Near predicted monthly values during local night.
Enhanced by 20% 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:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
14 Dec
Solar: R0
Geomagnetic: G0
Frequencies:
Cocos Island Region:
Enhanced by 25% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 25% during local night.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
15 Dec
Solar: R1, with an M3.1 at 2024UT
Geomagnetic: G0
Frequencies:
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Near predicted monthly values.
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/Davis/Mawson):
Depressed by 15% over the UT day.
16 Dec
Solar: R0
Geomagnetic: G0
Frequencies:
Cocos Island Region:
Enhanced by 25% during local day.
Enhanced by 15% during local night.
Niue Island Region:
Enhanced by 15% 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/Davis/Mawson):
Near predicted monthly values over the UT day.
17 Dec
Solar: R0
Geomagnetic: G1
In the BOM magnetometer data for 17 Dec, a weak (23nT) impulse
was observed at 0916UT, a weak (36nT) impulse was observed at
1227UT and a weak (40nT) impulse was observed at 1502UT.
Frequencies:
Cocos Island Region:
Enhanced by 20% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Enhanced by 25% during local day.
Near predicted monthly values during local night.
Depressed by 25% after local dawn.
Northern Australian Region:
Enhanced by 15% during local day.
Near predicted monthly values during local night.
Depressed by 25% after local dawn.
Southern Australian Region:
Mostly near predicted monthly values.
Depressed by 40% after local dawn.
Antarctic Region (Casey/Davis/Mawson):
Depressed by 20% over the UT day.
18 Dec
Solar: R0
Geomagnetic: G0
Frequencies:
Cocos Island Region:
Enhanced by 30% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Near predicted monthly values during local day.
Depressed by 20% during local night.
Northern Australian Region:
Depressed by 30% during local day.
Depressed by 25% during local night.
Southern Australian Region:
Depressed by 30% during local day.
Depressed by 15% during local night.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
19 Dec
Solar: R1, with an M1.6 at 1038UT, an M3.8 at 1534UT,
and an M1.7 at 1900UT
Geomagnetic: G0
Frequencies:
Cocos Island Region:
Depressed by 35% during local day.
Depressed by 25% during local night.
Niue Island Region:
Enhanced by 15% during local day.
Near predicted monthly values during local night.
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 (20 DECEMBER - 26 DECEMBER)
Solar:
R0-R1, chance R2 with frequency increasing early in week
Geomagnetic:
G0
Frequencies:
MUFs near predicted monthly values to 15-20% enhanced most of 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
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