[Ips-dsgr] IPS Daily Report - 30 August 02
rwc
rwc at ips.gov.au
Sat Aug 31 09:44:10 EST 2002
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 30/2330Z AUGUST 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 30 AUGUST AND FORECAST FOR 31 AUGUST - 02 SEPTEMBER
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 30 Aug: High
Flares Max Fadeout Freq. Sectors
X1/SF 1329UT probable all European
Observed 10.7 cm flux/Equivalent Sunspot Number for
30 Aug: 170/124
1B. SOLAR FORECAST
31 Aug 01 Sep 02 Sep
Activity Moderate Moderate Moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 170/124 165/119 165/119
COMMENT: The solar activity reached high level on UT day
30 August 2002. Several C class and an X1.5 flares were
observed during the UT day 30 August. The X1.5 flare was
produced by the region 95(N07E65) at 1329UT. Region 95
is stable whereas regions 87 (S08W13) and 85(S08W75) are
declining. The inter- planetary magnetic field remained
mildly but mostly southwards. The solar wind speed
gradually decreased from 420 to 350 km/s (approx).
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 30 Aug:
Quiet to Unsettled
Estimated Indices 30 Aug : A K
Australian Region 9 2232 3221
Townsville 7 2222 3212
Learmonth 6 2221 2220
Canberra 7 1222 3211
Hobart 7 1222 3221
Casey(Ant) 11 3232 32--
Davis(Ant) 13 2343 22-1
Observed Regional daily pc3 Indices 30 AUG :
Townsville 0 (Quiet)
Learmonth 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.
Estimated AFr/Ap Indices 30 Aug : A
Fredericksburg 8
Planetary 10
Observed AFr/Ap Indices 29 Aug : A K
Fredericksburg 6
Planetary 10 3212 3332
2B. MAGNETIC FORECAST
Date Ap Conditions
31 Aug 8 Quiet to Unsettled
01 Sep 8 Quiet to Unsettled
02 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
30 Aug Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
31 Aug Normal Normal Normal-fair
01 Sep Normal Normal Normal
02 Sep Normal Normal Normal
COMMENT: HF conditions are expected to remain mostly normal
over the next few days at almost all latitudes.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
30 Aug 127
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 20% during local day,
Enhanced by 25% during local night.
Enhanced by 40% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base):
Enhanced by 30% over the UT day with
some periods of degradations and
depressions.
Predicted Monthly T index for August: 104
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
31 Aug 135 Near predicted monthly values to enhanced 10%.
01 Sep 135 Near predicted monthly values to enhanced 10%.
02 Sep 135 Near predicted monthly values to enhanced 10%.
COMMENT: HF conditions are expected to remain mostly normal
during the next three days across Australian regions.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 29 Aug
Daily Proton Fluence >1 MeV: 1.5E+05
Daily Proton Fluence >10 MeV: 1.4E+04
Daily Electron Fluence >2 MeV: 1.20E+06 (normal)
X-ray background: C2.3
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 29 Aug
Speed: 469 km/sec Density: 2.7 p/cc Temp: 101000 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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