[Ips-dsgr] SWS Daily Report - 01 August 22 issued 2330 UT on 01 Aug 2022 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Tue Aug 2 09:30:55 EST 2022
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/01 AUGUST 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 01 AUGUST AND FORECAST FOR 02 AUGUST - 04 AUGUST
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 01 Aug: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Aug: 95/41
1B. SOLAR FORECAST
02 Aug 03 Aug 04 Aug
Activity R0 R0 R0
Fadeouts None expected Possible Possible
10.7cm/SSN 94/40 96/43 94/40
COMMENT: Solar activity on UT day 01-Aug was at the R0 level,
with no significant flaring activity. There are currently two
numbered sunspot regions visible on the solar disk. AR3068 (S16E04,
beta) has exhibited spot development over the 24 hour period.
AR3070 (N16E51, beta) recently appeared on the solar disk and
appears stable. Solar activity is expected to be at the R0 level
over 02-04 Aug. Several CMEs were observed, but none are considered
geoeffective. The solar wind speed on UT day 01-Aug was elevated
due to coronal hole high speed wind stream effects, and ranged
from 435 to 560 km/s and is currently near 515 km/s. The peak
total interplanetary field strength (IMF, Bt) was 9 nT and the
north-south IMF component (Bz) range was +6 to -5 nT. The solar
wind speed is expected to remain elevated over 02-04 Aug due
to high speed solar wind streams from a south polar coronal hole.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Aug: G0
Estimated Indices 01 Aug : A K
Australian Region 5 22222011
Darwin 4 22212011
Learmonth 6 32222012
Alice Springs 5 22222011
Gingin 6 32222012
Canberra 4 22122001
Hobart 6 12233101
Estimated Antarctic Regional K Indices 01 Aug :
Macquarie Island 5 12033200
Casey 12 34233212
Mawson 32 65333216
Observed Regional daily pc3 Indices 01 Aug :
Darwin 0 (Quiet)
Townsville NA
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 54 (Unsettled)
Canberra 51 (Unsettled)
Hobart 53 (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 01 Aug : A
Fredericksburg 8
Planetary 10
Observed AFr/Ap Indices 31 Jul : A K
Fredericksburg 12
Planetary 10 2221 2423
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Aug 14 G0
03 Aug 14 G0
04 Aug 10 G0
COMMENT: G0 geomagnetic conditions were observed in the Australian
region on UT day 01-Aug. Mostly G0 geomagnetic conditions were
observed in Antarctica, with a period of G1-G2 observed at Mawson.
G0 geomagnetic conditions are expected over 02-04 Aug, with mildly
disturbed conditions expected due to the effects of coronal hole
high speed wind streams.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Aug Normal-fair Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Aug Normal Normal Normal-fair
03 Aug Normal Normal Normal-fair
04 Aug Normal Normal Normal-fair
COMMENT: Mostly normal to mildly degraded HF conditions are expected
on 02-04 Aug.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Aug 49
Observed Australian Regional MUFs
Cocos Island Region:
Enhanced by 20% during local day.
Depressed by 35% during local night.
Depressed by 30% after local dawn.
Niue Island Region:
Depressed by 15% during local day.
Depressed by 30% during local night.
Northern Australian Region:
Depressed by 15% during local day.
Depressed by 20% during local night and after local dawn.
Southern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 15% over the UT day.
Monthly T index:
Month T index
Jul 65
Aug 67
Sep 68
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Aug 50 Depressed 0 to 15%/near predicted monthly values
03 Aug 50 Depressed 0 to 15%/near predicted monthly values
04 Aug 50 Depressed 0 to 15%/near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) on UT day 01-Aug were
mostly near predicted monthly values to 15-20% depressed at some
Australian sites. Ionospheric conditions were degraded during
local night hours in Northern Australia. Spread-F was observed
at several Australian sites. MUFs are expected to be near predicted
monthly values to 15% depressed over 02-04 Aug.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 31 Jul
Daily Proton Fluence >1 MeV: 1.8E+05
Daily Proton Fluence >10 MeV: 3.1E+04
Daily Electron Fluence >2 MeV: 8.80E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 2%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B1.2
DSCOVR Satellite Solar Wind Day Averaged Data for 31 Jul
Speed: 352 km/sec Density: 12.6 p/cc Temp: 80200 K Bz: 4 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
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Australian Space Weather Forecasting Centre
Bureau of Meteorology
Level 2 Bice Building, Lot Fourteen Precinct, North Terrace, Adelaide SA 5000
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au
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