[Ips-dsgr] ASWFC Daily Report - 30 January 26 issued 2330 UT on 30 Jan 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Sat Jan 31 10:30:51 AEDT 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/30 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 30 JANUARY AND FORECAST FOR 31 JANUARY - 02 FEBRUARY
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 30 Jan: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 30 Jan: 128/81
1B. SOLAR FORECAST
31 Jan 01 Feb 02 Feb
Activity R0, chance of R1 R0, chance of R1 R0, chance of R1
Fadeouts None expected None expected None expected
10.7cm/SSN 125/78 120/72 115/66
COMMENT: Solar flare activity was at the R0 level on UT day 30-Jan.
With no significant flares. There are currently seven numbered
and one unnumbered sunspot regions visible on the solar disk.
AR4359 (N20E04, beta) showed some mild spot development over
the UT day. A developing unnumbered region is visible at around
N18E68 with beta magnetic characteristics, this is the most significant
sunspot region on the solar disk. All other regions appear stable
or in decay. Solar flare activity is expected to remain at the
R0 level, with a chance of R1 over 31-Jan to 02-Feb. Solar radiation
storm conditions were at the S0 level on UT day 30-Jan, despite
mild enhancements in the >10 MeV proton flux as measured at GOES.
S0 conditions are expected over 31-Jan to 02-Feb. No Earth-directed
coronal mass ejections were observed over the past 24 hours.
The solar wind speed was in decline on 30-Jan and mostly ranged
between 640 km/s and 480 km/s across the UT day and is currently
near 485 km/s. The interplanetary magnetic field strength (IMF,
Bt) peaked at 4 nT, with the North-South component (Bz) ranging
between -2 and +3 nT over the UT day. The solar wind speed is
expected to continue to decline towards background levels as
coronal hole high speed wind stream effects wane.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 30 Jan: Quiet to Unsettled
Estimated Indices 30 Jan : A K
Australian Region 5 32221101
Cocos Island 3 22111100
Darwin 6 -3221112
Townsville 6 32221111
Learmonth 6 32121202
Alice Springs 5 32121101
Gingin 5 22121202
Canberra 5 32220101
Kennaook Cape Grim 5 32221101
Hobart 5 32221101
Estimated Antarctic Regional K Indices 30 Jan :
Macquarie Island 5 32211101
Casey 20 45532222
Mawson 21 44333325
Observed Regional daily pc3 Indices 30 Jan :
Darwin 5 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 8 (Quiet)
Hobart 20 (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 30 Jan : A
Fredericksburg 8
Planetary 10
Observed AFr/Ap Indices 29 Jan : A K
Fredericksburg 14
Planetary 22 4324 4444
2B. MAGNETIC FORECAST
Date Ap Conditions
31 Jan 8 G0
01 Feb 7 G0
02 Feb 5 G0
COMMENT: G0 geomagnetic conditions were observed in the Australian
region on UT day 30-Jan. G2 conditions were observed at Mawson
and G1 conditions were observed at Casey in the Antarctic region.
G0 geomagnetic conditions are expected over 31-Jan to 02-Feb
as recent coronal hole high speed wind stream effects wane.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
30 Jan Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
31 Jan Normal Normal Normal-fair
01 Feb Normal Normal Normal
02 Feb Normal Normal Normal
COMMENT: Global ionospheric conditions were mostly normal in
the northern hemisphere on UT day 30-Jan, with fair conditions
in the southern hemisphere recovering to normal conditions over
the day. Ionospheric conditions are expected to remain mostly
normal over 31-Jan to 02-Feb.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
30 Jan 93
Observed Australian Regional MUFs
Cocos Island Region:
Enhanced by 25% during local day.
Enhanced by 15% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 20% 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.
Monthly T index:
Month T index
Dec 110
Jan 89
Feb 88
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
31 Jan 97 Near predicted monthly values
01 Feb 100 Near predicted monthly values
02 Feb 100 Near predicted monthly values
COMMENT: Maximum Usable Frequencies (MUFs) in the Australian
region were near predicted monthly values on UT day 30-Jan. Significant
sporadic E was observed at Hobart and mild sporadic E was observed
at Brisbane throughout the UT day. MUFs are expected to be near
predicted monthly values over 31-Jan to 02-Feb
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 29 Jan
Daily Proton Fluence >1 MeV: 3.3E+06
Daily Proton Fluence >10 MeV: 2.0E+04
Daily Electron Fluence >2 MeV: 2.60E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:17%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B6.7
DSCOVR Satellite Solar Wind Day Averaged Data for 29 Jan
Speed: 665 km/sec Density: 0.7 p/cc Temp: 295000 K Bz: -1 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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