[Ips-dsgr] ASWFC Daily Report - 05 March 26 issued 2330 UT on 05 Mar 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Fri Mar 6 10:30:49 AEDT 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/05 MARCH 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 05 MARCH AND FORECAST FOR 06 MARCH - 08 MARCH
STATUS INDICATORS SOL:** YELLOW ** MAG:** YELLOW ** ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 05 Mar: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 05 Mar: 146/100
1B. SOLAR FORECAST
06 Mar 07 Mar 08 Mar
Activity R0, chance of R1 R0, chance of R1 R0, chance of R1
Fadeouts Possible Possible Possible
10.7cm/SSN 145/99 140/94 135/89
COMMENT: Solar flare activity on UT day 05-Mar was at the R0
level, with no flares above the C2.0 level. There are currently
five numbered sunspot regions on the solar disk. None of which
are large, magnetically complex or have a recent M-class flare
production history. AR4383 (N13W65, beta) showed some spot development,
but will rotate off the solar disk over the coming days. An unnumbered
region is present at N12E05 with beta magnetic classification
and is developing in size. All other active regions are either
stable or in decay. Solar flare activity is expected to be at
the R0 level, with a chance of R1 over 06-08 Mar. S0 solar radiation
storm conditions were observed on UT day 05-Mar. S0 solar radiation
storm conditions are expected over 06-08 Mar. No geoeffective
CMEs were observed on 05-Mar. The solar wind speed was in decline
over the UT day 05-Mar, mostly ranging between 350 and 450 km/s
interplanetary field strength (IMF, Bt) was 6 nT and the north-south
IMF component (Bz) was +4 to -4 nT. The solar wind speed is expected
to continue to remain near background levels on 06-Mar. An increase
in solar wind speed is expected over 07-08 Mar due to high speed
wind stream effects from an equatorial coronal hole currently
rotating towards a geoeffective position.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 05 Mar: Quiet
Estimated Indices 05 Mar : A K
Australian Region 2 21101000
Cocos Island 1 11100000
Darwin 2 20101001
Townsville 2 21201001
Learmonth 2 21101000
Alice Springs 2 11200001
Gingin 1 21100000
Canberra 1 11101000
Kennaook Cape Grim 2 21201100
Hobart 2 11201100
Estimated Antarctic Regional K Indices 05 Mar :
Macquarie Island 1 11101000
Casey 11 44411001
Mawson 8 32212004
Observed Regional daily pc3 Indices 05 Mar :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 0 (Quiet)
Hobart 2 (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 05 Mar : A
Fredericksburg 5
Planetary 5
Observed AFr/Ap Indices 04 Mar : A K
Fredericksburg 6
Planetary 7 2322 1121
2B. MAGNETIC FORECAST
Date Ap Conditions
06 Mar 5 G0
07 Mar 12 G0, chance G1
08 Mar 18 G0, chance G1
COMMENT: G0 geomagnetic conditions were observed in the Australian
and Antarctic regions on UT day 05-Mar. G0 geomagnetic conditions
are expected on 06-Mar. G0 conditions, with a chance of G1 are
expected over 07-08 Mar due to anticipated coronal hole high
speed wind effects.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
05 Mar Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
06 Mar Normal Normal Normal
07 Mar Normal Normal Normal-fair
08 Mar Normal Normal-fair Fair
COMMENT: HF radio propagation conditions on UT day 04-Mar were
normal. HF radio propagation conditions over 06-07 Mar are expected
to be mostly normal. There is a chance of mild degradations on
08-Mar at high latitudes due to possible geomagnetic activity
over 07-08 Mar.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
05 Mar 105
Observed Australian Regional MUFs
Cocos Island Region:
Enhanced by 20% during local day.
Enhanced by 70% during local night.
Niue Island Region:
Enhanced by 15% 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:
Mostly near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Enhanced by 15% 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
06 Mar 110 Near to 15% above predicted monthly values
07 Mar 110 Near to 15% above predicted monthly values
08 Mar 90 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region were near predicted monthly values, with enhancements
of up to 15% observed in the northern Australian region during
local night. Sporadic E was observed at Hobart during local night.
MUFs are expected to be near predicted monthly values to 15%
enhanced over 06-07 Mar. MUFs are expected to be near predicted
monthly values on 08-Mar due to possible geomagnetic activity
over 07-08 Mar.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 04 Mar
Daily Proton Fluence >1 MeV: 1.8E+06
Daily Proton Fluence >10 MeV: 1.5E+04
Daily Electron Fluence >2 MeV: 2.30E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 4%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B4.4
DSCOVR Satellite Solar Wind Day Averaged Data for 04 Mar
Speed: 419 km/sec Density: 2.5 p/cc Temp: 106000 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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