[Ips-dsgr] ASWFC Daily Report - 01 March 26 issued 2330 UT on 01 Mar 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Mon Mar 2 10:30:47 AEDT 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/01 MARCH 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 01 MARCH AND FORECAST FOR 02 MARCH - 04 MARCH
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 01 Mar: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Mar: 147/101
1B. SOLAR FORECAST
02 Mar 03 Mar 04 Mar
Activity R0, chance of R1 R0, chance of R1 R0, chance of R1
Fadeouts Possible Possible Possible
10.7cm/SSN 150/105 150/105 150/105
COMMENT: Solar flare activity on UT day 01-Mar was at the R0
level. There are seven numbered active regions visible on the
solar disk. All regions are small and magnetically simple with
little to know recent flare production history. AR4382 (N22W45,
beta) and AR4383 (N15W07, beta) both showed spot development
over the UT day. All other numbered active regions are either
stable or in decay. Solar flare activity is expected to be at
the R0 level, with a chance R1 over 01-03 Mar. S0 solar radiation
storm conditions were observed on UT day 28-Feb. S0 solar radiation
storm conditions are expected over 01-03 Mar. No coronal mass
ejections (CMEs) were observed on UT day 01-Mar. The solar wind
speed declined slightly over the UT day 24-Feb, mostly ranging
between 440 and 340 km/s. The wind speed is currently at around
360 km/s. A forecast possible CME impact does not appear to have
eventuated. The solar wind is expected to continue to remain
near background levels over 02-04 Mar. A coronal hole is visible
on the solar disk in the southern hemisphere, but is considered
too far south to impact the solar wind environment at Earth.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Mar: G0
Estimated Indices 01 Mar : A K
Australian Region 4 21212111
Cocos Island 2 12111010
Darwin 5 22212112
Townsville 5 11222112
Learmonth 5 21212122
Alice Springs 5 21212112
Gingin 5 21212121
Canberra 4 11222011
Kennaook Cape Grim 4 11222011
Hobart 5 21222111
Estimated Antarctic Regional K Indices 01 Mar :
Macquarie Island 6 12142001
Casey 14 35422121
Mawson 17 44312244
Observed Regional daily pc3 Indices 01 Mar :
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 01 Mar : A
Fredericksburg 9
Planetary 10
Observed AFr/Ap Indices 28 Feb : A K
Fredericksburg 4
Planetary 8 2321 3222
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Mar 8 G0
03 Mar 5 G0
04 Mar 5 G0
COMMENT: G0 geomagnetic conditions were observed in the Australian
region on UT day 01-Mar. Mostly G0 geomagnetic conditions were
observed in the Antarctic region, with a period of G1 conditions
observed at Casey. G0 geomagnetic conditions are expected over
02-04 Mar.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Mar Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Mar Normal Normal Normal-fair
03 Mar Normal Normal Normal
04 Mar Normal Normal Normal
COMMENT: HF radio propagation conditions on UT day 01-Mar were
mostly normal with some fair conditions observed at the end of
the UT day in the southern hemisphere. Mostly normal HF conditions
are expected over 02-04 Mar.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Mar 104
Observed Australian Regional MUFs
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Enhanced by 20% during local day.
Enhanced by 15% 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
Feb 98
Mar 87
Apr 85
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Mar 100 Near predicted monthly values
03 Mar 100 Near predicted monthly values
04 Mar 100 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region on UT day 01-Mar were near predicted monthly values. Spread
F was observed at Hobart and Perth during local night hours and
ionospheric scintillation was observed at 01/1303UT and 01/1338UT
at Darwin. MUFs are generally expected to be near predicted monthly
values over 02-04 Mar.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 28 Feb
Daily Proton Fluence >1 MeV: 2.1E+05
Daily Proton Fluence >10 MeV: 1.6E+04
Daily Electron Fluence >2 MeV: 2.50E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:17%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: C1.0
DSCOVR Satellite Solar Wind Day Averaged Data for 28 Feb
Speed: 415 km/sec Density: 1.8 p/cc Temp: 54100 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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