[Ips-dsgr] ASWFC Daily Report - 01 November 25 issued 2330 UT on 01 Nov 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Sun Nov 2 10:30:48 AEDT 2025
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/01 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 01 NOVEMBER AND FORECAST FOR 02 NOVEMBER - 04 NOVEMBER
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 01 Nov: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Nov: 115/66
1B. SOLAR FORECAST
02 Nov 03 Nov 04 Nov
Activity R0, chance of R1 R0, chance of R1 R0, chance of R1
Fadeouts Possible Possible Possible
10.7cm/SSN 115/66 120/72 125/78
COMMENT: Solar activity on UT day 01-Nov was at the R0 level.
There are currently five numbered sunspot regions visible on
the solar disk. Newly numbered region AR4272 (N22E69, alpha)
has recently rotated on to the solar disk. This region may be
the recurrence of AR4246 which produced more than 20 M-class
flares on its last rotation over the solar disk. All other sunspot
regions are either stable or in decay. Solar activity is expected
to be at the R0 level over 02-04 Nov, with a chance of R1 due
to newly rotated on AR4272. Solar radiation conditions were elevated
but below the S1 level on UT day 01-Nov. S0 solar proton conditions
are expected over 02-04 Nov. No geoeffective CMEs were observed
on 01-Nov. The solar wind speed was slightly in decline over
01-Nov, mostly ranging between 650 to 450 km/s and is currently
near 500 km/s. The peak total interplanetary magnetic field strength
(IMF, Bt) was 8 nT and the north-south IMF component (Bz) range
was -5 to +5 nT. The solar wind speed is expected to continue
to decline towards backgrounds levels and remain there over 02-04
Nov.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Nov: G0
Estimated Indices 01 Nov : A K
Australian Region 9 22233222
Cocos Island 6 21222221
Darwin 8 22232222
Townsville 10 22233322
Learmonth 8 22223321
Alice Springs 8 22232222
Gingin 8 22223321
Canberra 8 22232222
Kennaook Cape Grim 9 22233222
Hobart 9 22233222
Estimated Antarctic Regional K Indices 01 Nov :
Macquarie Island 15 22253421
Casey 23 45533332
Mawson 32 34444464
Observed Regional daily pc3 Indices 01 Nov :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 2 (Quiet)
Canberra 0 (Quiet)
Hobart 0 (Quiet)
Pc3 pulsations are high frequency (10-45 second period) variations
of the Earths magnetic field. Daily pc3-indices are the daily sum
of 20 minute pc3-indices for that station and have been shown to be
well correlated with rejection of high resolution aeromagnetic
survey flight-line data.
NOTE: Indices may have been generated from data obtained in
cooperation with the following organisations: Geoscience Australia,
University of Newcastle Space Physics Group, Australian Government
Antarctic Division and International Center for Space Weather
Science and Education, Japan.
Estimated AFr/Ap Indices 01 Nov : A
Fredericksburg 13
Planetary 14
Observed AFr/Ap Indices 31 Oct : A K
Fredericksburg 16
Planetary 25 4544 4333
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Nov 11 G0
03 Nov 8 G0
04 Nov 8 G0
COMMENT: G0 geomagnetic conditions were observed in the Australian
region on UT day 01-Nov. Mostly G1 geomagnetic conditions were
observed in the Antarctic region, with G2 conditions observed
at Mawson. G0 geomagnetic conditions are expected over 02-04
Nov.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Nov Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Nov Normal Normal Normal-fair
03 Nov Normal Normal Normal-fair
04 Nov Normal Normal Normal-fair
COMMENT: HF radio propagation conditions on UT day 01-Nov were
mostly fair, with a recovery to normal conditions over the day.
Poor to fair conditions were observed at high latitudes. Mostly
normal conditions are expected over 02-04 Nov.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Nov 101
Observed Australian Regional MUFs
Cocos Island Region:
Mostly near predicted monthly values.
Depressed by 20% after local dawn.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 30% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Depressed by 15% over the UT day.
Monthly T index:
Month T index
Oct 104
Nov 89
Dec 90
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Nov 95 Near predicted monthly values
03 Nov 100 Near predicted monthly values
04 Nov 100 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) on UT day 01-Nov were
near predicted monthly values in the Australian region. Spread
F was observed at Hobart during local night hours. MUFs are expected
to be near predicted monthly values over 02-04 Nov.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 31 Oct
Daily Proton Fluence >1 MeV: 1.3E+06
Daily Proton Fluence >10 MeV: 2.0E+04
Daily Electron Fluence >2 MeV: 1.40E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:13%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B8.5
DSCOVR Satellite Solar Wind Day Averaged Data for 31 Oct
Speed: 649 km/sec Density: 1.2 p/cc Temp: 341000 K Bz: -2 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
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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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