[Ips-dsgr] IPS Daily Report - 06 October 02
rwc
rwc at ips.gov.au
Mon Oct 7 10:13:18 EST 2002
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 06/2330Z OCTOBER 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 06 OCTOBER AND FORECAST FOR 07 OCTOBER - 09 OCTOBER
STATUS INDICATORS SOL:*YELLOW* MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 06 Oct: Moderate
Flares Max Fadeout Freq. Sectors
M2.4/1N 0451UT possible lower E. Asia/Aust.
Observed 10.7 cm flux/Equivalent Sunspot Number for 06 Oct: 162/116
1B. SOLAR FORECAST
07 Oct 08 Oct 09 Oct
Activity Moderate Moderate Moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 170/124 175/129 180/133
COMMENT: Further flare activity is possible from regions 137
and 139.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 06 Oct: Quiet to Unsettled
Estimated Indices 06 Oct : A K
Australian Region 7 2322 1223
Townsville 7 2222 2223
Learmonth 7 2222 1234
Canberra 9 2322 13--
Hobart 8 2332 1223
Casey(Ant) 13 -433 2223
Observed Regional daily pc3 Indices 06 OCT :
Townsville 2 (Quiet)
Learmonth 0 (Quiet)
Canberra NA
Hobart 8 (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 06 Oct : A
Fredericksburg 18
Planetary 18
Observed AFr/Ap Indices 05 Oct : A K
Fredericksburg 12
Planetary 29 4435 5533
2B. MAGNETIC FORECAST
Date Ap Conditions
07 Oct 12 Unsettled
08 Oct 20 Unsettled to active with possible minor storm
periods.
09 Oct 16 Unsettled to active
COMMENT: Solar wind parameters returned to mostly near normal
values over the past 24 hours, resulting in mostly unsettled
to active levels of geomagnetic activity. At the time of issue
LASCO coronagraph imagery was unavailable for a full analysis
of recent flare/Type II activity from region 139. Due to the
easterly location of this region it is assumed that any CME activity
associated with the flare/type II activity would be predominantly
eastward directed and therefore not very geoeffective. There
is still the chance of a glancing blow from this recent activity
which may combine with a high speed coronal hole solar wind stream
to produce minor storm periods on 8 October.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
06 Oct Normal Normal-fair Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
07 Oct Normal Normal Normal-Fair
08 Oct Normal Normal-Fair Fair
09 Oct Normal Normal-Fair Fair
COMMENT: Mildly degraded HF conditions were observed at times
for southern regions for 6 October. Mostly normal conditions
are expected for 7 October with mild depressions again possible
at times for southern regions for 8-9 October.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
06 Oct 109
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced greater than 15%.
Northern Australian Region:
Near predicted monthly values to enhanced.
Southern Australian and New Zealand Region:
Depressed 15-30% at times to near predicted
monthly values.
Antarctic Region (Casey/Scott Base):
Depressed 15-30% at times to near predicted
monthly values.
Predicted Monthly T index for October: 94
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
07 Oct 120 5 to 15% above predicted monthly values
08 Oct 110 Mostly near predicted monthly values to
depressed 5-15%.
09 Oct 100 Near predicted monthly values to enhanced for
northern Australian regions and depressed 10-20%
at times for Southern regions.
COMMENT: IPS HF Communications Warning 50 was issued on 5 October
and is current for interval 5-7 October (SWFs) . Mildly degraded
HF conditions were observed at times for southern regions for
6 October. Mostly normal conditions are expected for 7 October
with mild depressions again possible at times for southern regions
for 8-9 October.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 05 Oct
Daily Proton Fluence >1 MeV: 5.3E+05
Daily Proton Fluence >10 MeV: 1.1E+04
Daily Electron Fluence >2 MeV: 5.10E+07 (normal)
X-ray background: B9.8
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 05 Oct
Speed: 395 km/sec Density: 2.8 p/cc Temp: 59200 K Bz: -5 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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