[Ips-dsgr] IPS Daily Report - 29 August 02
rwc
rwc at ips.gov.au
Fri Aug 30 09:28:05 EST 2002
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 29/2330Z AUGUST 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 29 AUGUST AND FORECAST FOR 30 AUGUST - 01 SEPTEMBER
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 29 Aug: Moderate
Flares Max Fadeout Freq. Sectors
M4/-- 28/1859UT possible lower East Pacific/
North American
M3/SF 1252UT possible lower European
Observed 10.7 cm flux/Equivalent Sunspot Number for 29 Aug: 169/123
1B. SOLAR FORECAST
30 Aug 31 Aug 01 Sep
Activity Moderate Moderate Low to moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 170/124 165/119 155/109
COMMENT: Several C class and three M class flares were
observed during the UT day 29 August. Region 95 (N07E76)
produced M3.2 at 1252UT. Region 85(S08W50), which
produced a C4.5 flare at 1039UT/29Aug, is growing.
Region 87 (S08W20) is decaying. The inter-planetary
magnetic field remained predominantly northwards.
The solar wind speed gradually decreased from 500
to 450 km/s (approx).
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 29 Aug:
Quiet to Unsettled
Estimated Indices 29 Aug : A K
Australian Region 9 3122 3322
Townsville 6 2111 2322
Learmonth 9 3121 3322
Canberra 6 2111 2322
Hobart 7 2111 3322
Casey(Ant) 15 3-33 33--
Davis(Ant) 13 3332 3332
Observed Regional daily pc3 Indices 29 AUG :
Townsville 0 (Quiet)
Learmonth 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.
Estimated AFr/Ap Indices 29 Aug : A
Fredericksburg 8
Planetary 10
Observed AFr/Ap Indices 28 Aug : A K
Fredericksburg 7
Planetary 10 3322 2333
2B. MAGNETIC FORECAST
Date Ap Conditions
30 Aug 8 Quiet to Unsettled
31 Aug 8 Quiet to Unsettled
01 Sep 8 Quiet to Unsettled
COMMENT: The geo-magnetic activity is expected to remain
mostly at quiet to unsettled levels over the next three days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
29 Aug Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
30 Aug Normal Normal Normal
31 Aug Normal Normal Normal
01 Sep Normal Normal Normal
COMMENT: HF conditions are expected to remain mostly normal
over the next three days.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
29 Aug 137
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 25% during local day,
Enhanced by 40% during local night.
Enhanced by 35% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Enhanced by 20% during local day,
Near predicted monthly values during local night.
Enhanced by 20% after local dawn.
Antarctic Region (Casey/Scott Base):
Mostly near predicted monthly values over the UT day.
Predicted Monthly T index for August: 102
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
30 Aug 142 Near predicted monthly values to enhanced 15%.
31 Aug 142 Near predicted monthly values to enhanced 15%.
01 Sep 140 Near predicted monthly values to enhanced 15%.
COMMENT: HF conditions are expected to remain mostly normal
during the next three days.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 28 Aug
Daily Proton Fluence >1 MeV: 3.7E+05
Daily Proton Fluence >10 MeV: 2.5E+04
Daily Electron Fluence >2 MeV: 5.70E+05 (normal)
X-ray background: C1.0
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 28 Aug
Speed: 457 km/sec Density: 2.1 p/cc Temp: 162000 K
Bz: 4 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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