[Ips-dsgr] IPS Daily Report - 14 August 03
rwc
rwc at ips.gov.au
Fri Aug 15 09:57:44 EST 2003
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 14/2330Z AUGUST 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 14 AUGUST AND FORECAST FOR 15 AUGUST - 17 AUGUST
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 14 Aug: Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 14 Aug: 130/84
1B. SOLAR FORECAST
15 Aug 16 Aug 17 Aug
Activity Low to moderate Low to moderate Low to moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 130/84 135/89 130/84
COMMENT: The coronal hole solar wind stream presently impacting
the Earth has continued to produce mildly elevated wind speeds.
Solar region 431 has the chance of producing significant flare
activity.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 14 Aug: Quiet to Unsettled
Estimated Indices 14 Aug : A K
Australian Region 12 3332 2332
Darwin 11 3332 2322
Townsville 11 3232 2332
Learmonth 11 3232 2333
Canberra 12 3342 1232
Hobart 12 3342 1232
Casey(Ant) 15 4432 22-3
Observed Regional daily pc3 Indices 14 AUG :
Townsville 10 (Quiet)
Learmonth 23 (Quiet to unsettled)
Canberra 93 (Minor storm)
Hobart 86 (Minor storm)
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 14 Aug : A
Fredericksburg 12
Planetary 16
Observed AFr/Ap Indices 13 Aug : A K
Fredericksburg 15
Planetary 17 3532 3243
2B. MAGNETIC FORECAST
Date Ap Conditions
15 Aug 15 Quiet to unsettled with possible isolated active
periods.
16 Aug 12 Quiet to unsettled
17 Aug 8 Quiet to unsettled
COMMENT: The coronal hole solar wind stream has continued to
produce mildly elevated geomagnetic activity resulting in isolated
active periods. Mostly quiet to unsettled levels expected for
the next few days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
14 Aug Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
15 Aug Normal Normal Normal-Fair
16 Aug Normal Normal Normal-Fair
17 Aug Normal Normal Normal-Fair
COMMENT: Mostly normal conditions with slight depressions possible
at times for the next few days. SWF's possible.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
14 Aug 85
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 45% during local day,
Near predicted monthly values during local night.
Northern Australian Region:
Enhanced by 20% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Enhanced by 15% during local day,
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base):
Mostly near predicted monthly values.
Predicted Monthly T index for August: 60
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
15 Aug 75 5 to 10% above predicted monthly values
16 Aug 75 5 to 10% above predicted monthly values
17 Aug 75 5 to 10% above predicted monthly values
COMMENT: IPS HF Communications Warning 56 was issued on 13 August
and is current for interval 14-16 August (SWFs) . Mostly normal
conditions with slight depressions possible at times for the
next few days. SWF's possible.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 13 Aug
Daily Proton Fluence >1 MeV: 8.5E+05
Daily Proton Fluence >10 MeV: 1.1E+04
Daily Electron Fluence >2 MeV: 1.80E+08 (moderate)
X-ray background: B6.0
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 13 Aug
Speed: 609 km/sec Density: 3.3 p/cc Temp: 134000 K Bz: 2 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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