[Ips-dsgr] SWS Daily Report - 01 June 22 issued 2330 UT on 01 Jun 2022 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Thu Jun 2 09:30:46 EST 2022
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/01 JUNE 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 01 JUNE AND FORECAST FOR 02 JUNE - 04 JUNE
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 01 Jun: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Jun: 104/53
1B. SOLAR FORECAST
02 Jun 03 Jun 04 Jun
Activity R0 R0 R0
Fadeouts None expected None expected None expected
10.7cm/SSN 105/54 105/54 105/54
COMMENT: Solar activity on UT day 1-June was at R0 level, with
no significant flaring activity (B-class flares only). There
are currently 4 sunspot regions on the visible disk. Solar region
AR3026 (N16W35 beta) has shown recent growth, but so far has
remained relatively quiet. Another recently emerging solar region
AR3027 (S17E04 beta) has also shown some development. A small
solar filament located at S16W06 erupted late in the UT day on
31 May. The associated CME appears very minor and is not expected
to be significantly geoeffective. Another solar filament in the
north west solar quadrant has been reported to have lifted off,
however no CME appeared visible in available coronagraph imagery.
The solar wind speed on 01-Jun remains elevated with a continuing
downward trend, decreasing from around 509 km/s to the current
speed of near 400 km/s. The peak total interplanetary magnetic
field strength (IMF, Bt) was 5 nT, and the north-south IMF component
(Bz) range was +3 to -5nT. The solar wind speed is expected to
continue a downward trend over 02-04 Jun.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Jun: G0
Estimated Indices 01 Jun : A K
Australian Region 4 22121101
Darwin 3 22111101
Learmonth 5 22221201
Alice Springs 3 21111201
Gingin 3 22120101
Canberra 3 22120100
Hobart 3 22120100
Estimated Antarctic Regional K Indices 01 Jun :
Macquarie Island 4 22131100
Casey 7 33221211
Mawson 18 44332115
Observed Regional daily pc3 Indices 01 Jun :
Darwin 0 (Quiet)
Townsville NA
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 2 (Quiet)
Canberra 2 (Quiet)
Hobart 12 (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 Jun : A
Fredericksburg 6
Planetary 5
Observed AFr/Ap Indices 31 May : A K
Fredericksburg 8
Planetary 11 4322 2232
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Jun 5 G0
03 Jun 5 G0
04 Jun 5 G0
COMMENT: G0 geomagnetic conditions were observed in the Australian
region on UT day 01-Jun. G0 levels were observed in the Antarctic
region. G0 conditions are expected over 02-04 Jun.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Jun Normal Fair-normal Fair-normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Jun Normal Normal Normal
03 Jun Normal Normal Normal
04 Jun Normal Normal Normal
COMMENT: Mostly normal HF propagation conditions are expected
for 02-04 Jun.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Jun 50
Observed Australian Regional MUFs
Cocos Island Region:
Enhanced by 15% during local day.
Depressed by 20% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Depressed by 25% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
May 79
Jun 57
Jul 59
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Jun 60 Near predicted monthly values
03 Jun 60 Near predicted monthly values
04 Jun 60 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) on UT day 01-Jun were
mostly near monthly predicted values. Spread F observed local
night hours for east coast Australia. Sporadic E observed at
Hobart 13-15UT. MUFs are expected to be mostly near monthly predicted
values during 02-04 Jun.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 31 May
Daily Proton Fluence >1 MeV: 5.6E+04
Daily Proton Fluence >10 MeV: 3.4E+04
Daily Electron Fluence >2 MeV: 1.50E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:13%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B1.9
DSCOVR Satellite Solar Wind Day Averaged Data for 31 May
Speed: 513 km/sec Density: 7.8 p/cc Temp: 438000 K Bz: -2 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
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