[Ips-dsgr] ASWFC Daily Report - 22 November 25 issued 2330 UT on 22 Nov 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Sun Nov 23 10:30:50 AEDT 2025
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/22 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 22 NOVEMBER AND FORECAST FOR 23 NOVEMBER - 25 NOVEMBER
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 22 Nov: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 22 Nov: 119/71
1B. SOLAR FORECAST
23 Nov 24 Nov 25 Nov
Activity R0, chance R1 R0, chance R1 R0, chance R1
Fadeouts None expected None expected None expected
10.7cm/SSN 120/72 125/78 125/78
COMMENT: Solar activity on UT day 22-Nov was R0, with no significant
solar flares. There are currently five numbered sunspot regions
on the solar disk. New region AR4291 (S14E67, beta) has shown
grown in its leading spots, but has remained quiet. All other
sunspots are stable with little potential for flares. Solar activity
is expected to be R0 with a chance of R1 over 23-25 Nov.
No Earth-directed CMEs were observed on UT day 22-Nov.
S0 solar radiation storm conditions were observed on UT day 22-Nov.
S0 solar radiation storm conditions are expected over 23-25 Nov.
The solar wind environment on UT day 22-Nov was near background levels.
The solar wind speed ranged from 455 to 377 km/s. The peak total
interplanetary field strength (IMF, Bt) was 8 nT and the north-south
IMF component range (Bz) was +5 to -4 nT. The solar wind environment
is expected to be mostly at background levels over 23-25 Nov,
but may become mildly disturbed due to a recurrent coronal hole by
the end of the period.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 22 Nov: G0
Estimated Indices 22 Nov : A K
Australian Region 5 21112122
Cocos Island 2 11110021
Darwin 5 22111122
Townsville 5 11212122
Learmonth 5 22112122
Alice Springs 4 22111112
Gingin 5 22112122
Canberra 4 21102112
Kennaook Cape Grim 5 21212112
Hobart 5 21212112
Estimated Antarctic Regional K Indices 22 Nov :
Macquarie Island 2 11002011
Casey 18 35432233
Mawson 15 43223243
Observed Regional daily pc3 Indices 22 Nov :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (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 22 Nov : A
Fredericksburg 4
Planetary 5
Observed AFr/Ap Indices 21 Nov : A K
Fredericksburg 5
Planetary 8 3312 1222
2B. MAGNETIC FORECAST
Date Ap Conditions
23 Nov 5 G0
24 Nov 4 G0
25 Nov 10 G0, chance G1
COMMENT: G0 geomagnetic condtions were observed in the Australian
region on UT day 22-Nov. G0-G1 geomagnetic conditions were observed
in the Antarctic region. G0 geomagnetic conditions are expected
over 23-25 Nov. A recurrent coronal hole may connect with Earth
late in the period, with G1 periods possible, but this is more
likely to occur on 26-Nov.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
22 Nov Normal-fair Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
23 Nov Normal Normal Normal
24 Nov Normal Normal Normal
25 Nov Normal Normal Normal-fair
COMMENT: HF radio propagation conditions on UT day 22-Nov were
mostly normal, with some mild degradations at low latitudes.
HF radio propagation conditions are expected to be normal over
23-25 Nov, although some mild degradations may affect high latitudes
towards the end of the period due to possible coronal hole connection.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
22 Nov 99
Observed Australian Regional MUFs
Cocos Island Region:
No data available during local day.
No data available during local night.
Niue Island Region:
Near predicted monthly values.
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.
Monthly T index:
Month T index
Oct 104
Nov 89
Dec 90
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
23 Nov 100 Near to 15% above predicted monthly values
24 Nov 110 Near to 15% above predicted monthly values
25 Nov 110 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region on UT day 22-Nov were mostly near predicted values. Sporadic-E
was common along the east coast of the Australian region during
local night hours. MUFs are expected to be near predicted values
over 23-25 Nov. Enhancements of 15% are possible. Sporadic-E
during local night hours may be observed.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 21 Nov
Daily Proton Fluence >1 MeV: 1.9E+06
Daily Proton Fluence >10 MeV: 2.1E+04
Daily Electron Fluence >2 MeV: 2.00E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 3%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B6.5
DSCOVR Satellite Solar Wind Day Averaged Data for 21 Nov
Speed: 439 km/sec Density: 4.6 p/cc Temp: 110000 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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