[Ips-dsgr] IPS Daily Report - 03 August 05
rwc
rwc at ips.gov.au
Thu Aug 4 09:34:57 EST 2005
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 03/2330Z AUGUST 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 03 AUGUST AND FORECAST FOR 04 AUGUST - 06 AUGUST
STATUS INDICATORS SOL:** YELLOW ** MAG:** YELLOW ** ION: GREEN
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1A. SOLAR SUMMARY
Activity 03 Aug: Moderate
Flares Max Fadeout Freq. Sectors
M3.4 0506UT possible lower E. Asia/Aust.
Observed 10.7 cm flux/Equivalent Sunspot Number for 03 Aug: 109/59
1B. SOLAR FORECAST
04 Aug 05 Aug 06 Aug
Activity Low to moderate Low to moderate Low to moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 110/60 110/60 105/54
COMMENT: The M3 solar xray event was associated with a Type II
radio sweep observed on the Culgoora Spectrograph. Subsequent
viewing of the NASA/ESA SOHO LASCO instrument imagery showed only
minor eastward directed coronal mass ejection activity. This
event is considered not geoeffective. The ACE satellite solar
wind data indicates solar wind speeds at around 450km/sec, with
the north-soth component of the interplanetary magnetic field
mildly southward over the UT day. Isolated flaring may occur
from region 794. Also, SOHO EIT 284 imagery shows a south polar
extension coronal hole which will probably cause mild to moderate
increase in wind speeds 06-07 August.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 03 Aug: Quiet to Unsettled
Estimated Indices 03 Aug : A K
Australian Region 7 2321 1222
Learmonth 6 2320 1221
Culgoora 5 2221 1222
Canberra 5 2220 1222
Hobart 7 2321 1222
Casey(Ant) 12 3333 2232
Observed Regional daily pc3 Indices 03 Aug :
Townsville NA
Learmonth NA
Culgoora NA
Canberra NA
Hobart 19 (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 03 Aug : A
Fredericksburg 7
Planetary 8
Observed AFr/Ap Indices 02 Aug : A K
Fredericksburg 9
Planetary 12 3323 3222
2B. MAGNETIC FORECAST
Date Ap Conditions
04 Aug 10 Quiet to unsettled
05 Aug 10 Quiet to unsettled
06 Aug 16 Unsettled to active
COMMENT: Generally quiet to unsettled conditions expected. Mild
increase in geomagentic activity expected due to coronal hole
wind stream 06-07 Aug. Recent coronal mass ejection on 03 Aug
not expected to induce activity.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
03 Aug Normal Normal Fair-normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
04 Aug Normal Normal Normal-Fair
05 Aug Normal Normal Normal-Fair
06 Aug Normal Normal-Fair Fair
COMMENT: Mostly normal HF condtions. Mild degradation possible
at high latitudes 06-07 Aug.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
03 Aug 43
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 25-35%.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values,
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day.
Predicted Monthly T index for August: 26
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
04 Aug 40 near predicted monthly values
05 Aug 40 near predicted monthly values
06 Aug 40 near predicted monthly values chance for mild
depression.
COMMENT: Mild depression possible southern Aus/NZ region 06-07
Aug.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 02 Aug
Daily Proton Fluence >1 MeV: 5.3E+07
Daily Proton Fluence >10 MeV: 2.1E+05
Daily Electron Fluence >2 MeV: 1.00E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 2%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B2.4
ACE Satellite Solar Wind Day Averaged Data for 02 Aug
Speed: 487 km/sec Density: 4.7 p/cc Temp: 90800 K Bz: 3 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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