[Ips-dsgr] ASWFC Daily Report - 24 January 26 issued 2330 UT on 24 Jan 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Sun Jan 25 10:30:50 AEDT 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/24 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 24 JANUARY AND FORECAST FOR 25 JANUARY - 27 JANUARY
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 24 Jan: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 24 Jan: 174/128
1B. SOLAR FORECAST
25 Jan 26 Jan 27 Jan
Activity R0, chance R1 R0, chance R1 R0, chance R1
Fadeouts None expected None expected None expected
10.7cm/SSN 175/129 170/124 160/114
COMMENT: Solar flare activity on UT day 24-Jan was at the R0
level, with no significant flaring activity. There are currently
nine numbered sunspot regions visible on the solar disk. AR4349
(S14E14, beta) is the largest region on the disk and has shown
mild growth in its trailer spots. AR4353 (N18W11, beta) has exhibited
spot growth over the UT day. Newly numbered AR4355 (S12E46, beta)
has shown growth in its trailer spot. All other sunspot regions
are either stable or in decay. Solar flare activity is expected
to be at the R0 level over 25-27 Jan, with a chance of R1. S0
solar proton conditions were observed on UT day 24-Jan, with
the proton flux continuing a gradual decline over the UT day.
S0 solar proton conditions are expected over 25-27 Jan, with
a chance of S1. No Earth-directed CMEs have been observed in
the available coronagraph imagery. The solar wind speed on UT
day 24-Jan mildly declined, ranging from 490 to 570 km/s and
is currently near 535 km/s. The peak total interplanetary magnetic
field strength (IMF, Bt) was 8 nT and the north-south IMF component
(Bz) range was -6 to +6 nT. A small northern hemisphere coronal
hole is currently crossing the central meridian and may influence
the solar wind speed late on 27-Jan. The solar wind speed is
expected to decrease over 25-26 Jan, then mildly increase on
27-Jan.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 24 Jan: G0
Estimated Indices 24 Jan : A K
Australian Region 9 32222232
Cocos Island 6 21121132
Darwin 11 32232233
Townsville 11 32233232
Learmonth 10 32222233
Alice Springs 9 22223232
Gingin 11 32222243
Canberra 8 22222232
Kennaook Cape Grim 10 32223232
Hobart 10 32223232
Estimated Antarctic Regional K Indices 24 Jan :
Macquarie Island 19 22454332
Casey 34 55634343
Mawson 38 43444374
Observed Regional daily pc3 Indices 24 Jan :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 6 (Quiet)
Hobart 16 (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 24 Jan : A
Fredericksburg 14
Planetary 17
Observed AFr/Ap Indices 23 Jan : A K
Fredericksburg 17
Planetary 28 4444 4444
2B. MAGNETIC FORECAST
Date Ap Conditions
25 Jan 12 G0
26 Jan 10 G0
27 Jan 8 G0
COMMENT: G0 geomagnetic conditions were observed in the planetary
and Australian regions on UT day 24-Jan. Mostly G1-G2 geomagnetic
conditions were observed in the Antarctic region, with an isolated
period of G3 observed at Mawson. G0 geomagnetic conditions are
expected over 25-27 Jan.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
24 Jan Normal Normal-fair Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
25 Jan Normal Normal Normal-fair
26 Jan Normal Normal Normal-fair
27 Jan Normal Normal Normal-fair
COMMENT: Global HF radio propagation conditions on UT day 24-Jan
were normal to fair at mid and high latitudes, and normal at
low latitudes. HF radio propagation conditions are expected to
be mostly normal over 25-27 Jan.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
24 Jan 103
Observed Australian Regional MUFs
Cocos Island Region:
Enhanced by 30% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Enhanced by 35% during local day.
Near predicted monthly values during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Southern Australian Region:
Depressed by 15% during local day.
Near predicted monthly values during local night.
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
25 Jan 100 Near predicted monthly values
26 Jan 100 Near predicted monthly values
27 Jan 100 Near predicted monthly values
COMMENT: Maximum Usable Frequencies (MUFs) in northern Australia
were near predicted monthly values to 15% enhanced on UT day
24-Jan. Southern Australia MUFs were depressed by 15% during
local day. MUFs in the Australian region are expected to be near
predicted monthly values over 25-27 Jan.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 23 Jan
Daily Proton Fluence >1 MeV: 1.2E+07
Daily Proton Fluence >10 MeV: 2.7E+05
Daily Electron Fluence >2 MeV: 1.20E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:12%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: C1.2
DSCOVR Satellite Solar Wind Day Averaged Data for 23 Jan
Speed: 557 km/sec Density: 1.3 p/cc Temp: 193000 K Bz: -3 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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