[Ips-dsgr] ASWFC Daily Report - 08 March 26 issued 2330 UT on 08 Mar 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Mon Mar 9 10:30:49 AEDT 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/08 MARCH 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 08 MARCH AND FORECAST FOR 09 MARCH - 11 MARCH
STATUS INDICATORS SOL:** YELLOW ** MAG:** YELLOW ** ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 08 Mar: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 08 Mar: 135/89
1B. SOLAR FORECAST
09 Mar 10 Mar 11 Mar
Activity R0, chance R1 R0, chance R1 R0, chance R1
Fadeouts Possible Possible Possible
10.7cm/SSN 135/89 130/84 125/78
COMMENT: Solar activity on UT day 8-Mar was R0, with no solar
flares. There are currently five numbered sunspot regions on
the solar disk. Active region (AR) 4381 (N09W40, beta) has shown
minor growth in its trailer spots this past day, but the main
spot remains stable. All other regions are currently stable.
Solar activity is expected to be R0 with a chance for R1 over
9-11 Mar.
No CMEs were observed on UT day 8-Mar.
S0 solar radiation storm conditions were observed on UT day 8-Mar.
S0 solar radiation storm conditions are expected over 9-11 Mar.
The solar wind environment on UT day 8-Mar was mildly disturbed
due to recent coronal hole activity, although the influence from
this coronal hole is waning. The solar wind speed ranged from
630 km/s at the start of the day to 500 km/s by the end. The
peak total interplanetary field strength (IMF, Bt) was 9 nT and
the north-south IMF component range (Bz) was +5 to -7 nT. The
solar wind environment is expected to remain at similar levels
on 9-Mar as the coronal hole effects continue to ease, but also
due to a CME that is expected to pass close by the Earth. Conditions
may return to background levels over 10-11 Mar.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 08 Mar: G0
Estimated Indices 08 Mar : A K
Australian Region 12 33323322
Cocos Island 8 32222321
Darwin 12 33223323
Townsville 12 33323322
Learmonth 14 43323332
Alice Springs 12 33323322
Gingin 11 42223322
Canberra 11 32323322
Kennaook Cape Grim 12 33323322
Hobart 13 33323422
Estimated Antarctic Regional K Indices 08 Mar :
Macquarie Island 35 43636532
Casey 24 54543322
Mawson 45 65534555
Observed Regional daily pc3 Indices 08 Mar :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 9 (Quiet)
Alice Springs 0 (Quiet)
Gingin 53 (Unsettled)
Canberra 43 (Unsettled)
Hobart 55 (Unsettled)
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 08 Mar : A
Fredericksburg 18
Planetary 26
Observed AFr/Ap Indices 07 Mar : A K
Fredericksburg 11
Planetary 18 4332 2344
2B. MAGNETIC FORECAST
Date Ap Conditions
09 Mar 18 G0
10 Mar 14 G0
11 Mar 10 G0
COMMENT: Geomagnetic conditions in the Australian region on UT
day 8-Mar were G0. Geomagnetic conditions were G0-G2 in the Antarctic
region, and the planetary scale observed an isolated period of
G1 due to coronal hole effects. Geomagnetic conditions are generally
expected to be G0 over 9-11 Mar as the coronal hole effects decline.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
08 Mar Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
09 Mar Normal Normal Normal-fair
10 Mar Normal Normal Normal
11 Mar Normal Normal Normal
COMMENT: HF radio propagation conditions on UT day 8-Mar were
mostly normal, with some mild degradations setting in by the
second half of the day in the southern hemisphere. HF radio propagation
conditions may be mildly degraded at high latitudes on 9-Mar
as recent geomagnetic activity settles, and then conditions are
likely to return to normal over 10-11 Mar.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
08 Mar 104
Observed Australian Regional MUFs
Cocos Island Region:
Mostly near predicted monthly values.
Enhanced by 25% after local dawn.
Niue Island Region:
Enhanced by 40% during local day.
Enhanced by 25% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Southern Australian Region:
Enhanced by 20% during local day.
Enhanced by 15% during local night.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
Feb 98
Mar 87
Apr 85
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
09 Mar 95 Near predicted monthly values
10 Mar 95 Near predicted monthly values
11 Mar 105 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region on UT day 8-Mar were near predicted values to 20% enhanced.
Sporadic-E was observed in Norfolk Island and in Canberra during
local night hours. MUFs are expected to be mostly near predicted
values over 9-11 Mar.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 07 Mar
Daily Proton Fluence >1 MeV: 1.3E+06
Daily Proton Fluence >10 MeV: 1.5E+04
Daily Electron Fluence >2 MeV: 1.20E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 2%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B5.0
DSCOVR Satellite Solar Wind Day Averaged Data for 07 Mar
Speed: 457 km/sec Density: 3.1 p/cc Temp: 149000 K Bz: 0 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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