[Ips-dsgr] IPS Daily Report - 01 November 01
rwc
rwc at ips.gov.au
Fri Nov 2 10:55:48 EST 2001
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 01/2330Z NOVEMBER 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 01 NOVEMBER AND FORECAST FOR 02 NOVEMBER - 04 NOVEMBER
STATUS INDICATORS SOL:** RED ** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 01 Nov: High
Flares Max Fadeout Freq. Sectors
M1.4 0654UT possible lower Mid East/Indian
M3.1 1222UT possible lower European
M2.0 1518UT possible lower South American/
Atlantic
M1.7 1959UT possible lower East Pacific/
North American
M1.1 2311UT possible lower West Pacific
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Nov: 236/186
1B. SOLAR FORECAST
02 Nov 03 Nov 04 Nov
Activity Moderate to high Moderate to high Moderate to high
Fadeouts Probable Probable Probable
10.7cm/SSN 225/175 225/175 230/180
COMMENT: The north-south component of the interplanetary magnetic
field (Bz) was southward 10nT for most of the UT day. Solar wind
speed declined from 380 to 320km/sec. A solar radio noise storm
which began around 0530UT on 01 Nov is intensifying this morning.
The noise storm may be associated with the arrival of a new solar
region, SEC number 9687, which rotated around the south-east
limb of the Sun overnight. This region produced three of the
days xray events, two of which were long duration xray events,
an M3 flare from 1125-1308UT, and an M1 flare from 1351-1537UT.
Region 9682, the largest region on disk, remains ominous with
continued growth, but has yet to produce major activity. In general
however, solar activity seems to have stepped up with the arrival
of this new region, increasing the likelyhood of a major solar
flare.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Nov: Quiet to Active
Estimated Indices 01 Nov : A K
Australian Region 14 3323 4322
Darwin 10 3223 3223
Learmonth 9 3223 3212
Canberra 14 3323 4322
Hobart 16 3334 4311
Observed Regional daily pc3 Indices 01 NOV :
Darwin 5 (Quiet)
Townsville 0 (Quiet)
Learmonth 4 (Quiet)
Canberra 6 (Quiet)
Hobart 14 (Quiet)
Estimated AFr/Ap Indices 01 Nov : A
Fredericksburg 25
Planetary 25
Observed AFr/Ap Indices 31 Oct : A K
Fredericksburg 8
Planetary 9 1120 3333
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Nov 9 Quiet to Unsettled
03 Nov 5 Quiet
04 Nov 15 Unsettled to Active
COMMENT: Isolated active period observed overnight following
yesterdays impulse. Mild recurrent pattern on day 3 of forecast.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Nov Normal Normal Poor-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Nov Normal Normal Normal-Fair
03 Nov Normal Normal Normal
04 Nov Normal Normal Normal-Fair
COMMENT: Improved HF conditions expected today. Brief period
of degraded conditions may be experienced after local dawn, following
mild geomagnetic activity.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Nov 157
Observed Australian Regional MUFs
Equatorial PNG Region:
Enhanced by 15% during local day,
Enhanced by 25% during local night.
Northern Australian Region:
Enhanced by 20% during local day,
Enhanced by 25% during local night.
Southern Australian and New Zealand Region:
Enhanced by 25% during local day,
Enhanced by 15% during local night.
Antarctic Region (Casey/Scott Base):
Depressed 15% to enhanced by 20% over the UT day.
Some spread F observed.
Predicted Monthly T index for November: 104
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Nov 150 10 to 15% above predicted monthly values
03 Nov 150 10 to 15% above predicted monthly values
04 Nov 150 10 to 15% above predicted monthly values
COMMENT: IPS HF Communications Warning 66 was issued on 30 October
and is current for interval 31 October to 2 November (SWFs) .
Mild depressions may be experienced briefly after local dawn
southern Aus/NZ region.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 31 Oct
Daily Proton Fluence >1 MeV: 2.2E+05
Daily Proton Fluence >10 MeV: 1.2E+04
Daily Electron Fluence >2 MeV: 7.10E+06 (normal)
X-ray background: C1.9
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 31 Oct
Speed: 343 km/sec Density: 3.7 p/cc Temp: 20800 K Bz: -2 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/asfc
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au/users/asfc/
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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