[Ips-dsgr] IPS Daily Report - 26 May 09
rwc
rwc at ips.gov.au
Wed May 27 09:28:09 EST 2009
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 26/2330Z MAY 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 26 MAY AND FORECAST FOR 27 MAY - 29 MAY
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 26 May: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 26 May: 68/2
1B. SOLAR FORECAST
27 May 28 May 29 May
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 68/2 68/2 68/2
COMMENT: Solar activity was Very Low over the last 24 hours.
Active region 1018 does not show any spots at this time. The
solar wind was steady at approximately 300 km/s. Solar activity
is expected to be Very Low for the next three days.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 26 May: Quiet
Estimated Indices 26 May : A K
Australian Region 3 11111111
Darwin 3 11111111
Townsville 6 12222222
Learmonth 3 11112110
Camden 1 11111000
Canberra 0 00100000
Hobart 0 00000100
Casey(Ant) 3 -1111111
Observed Regional daily pc3 Indices 26 May :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice_Springs 0 (Quiet)
Camden 0 (Quiet)
Gnangara 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 and have been shown to be
well correlated with rejection of high resolution aeromagnetic
survey flight-line data.
NOTE: Indices may have been generated from data obtained in
cooperation with the following organisations: Geoscience Australia,
University of Newcastle Space Physics Group, Australian Government
Antarctic Division and Space Environment Research Center, Japan.
Estimated AFr/Ap Indices 26 May : A
Fredericksburg 3
Planetary 5
Observed AFr/Ap Indices 25 May : A K
Fredericksburg 1
Planetary 3 1001 1102
2B. MAGNETIC FORECAST
Date Ap Conditions
27 May 4 Quiet
28 May 4 Quiet
29 May 4 Quiet
COMMENT: Quiet geomagnetic conditions observed over the last
24 hours. Quiet conditions are expected for the next three days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
26 May Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
27 May Normal Normal Normal
28 May Normal Normal Normal
29 May Normal Normal Normal
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
26 May 0
Observed Australian Regional MUFs
Equatorial PNG/Niue Region:
Mostly near predicted monthly values,
Northern Australian Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 40% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Predicted Monthly T index for May: 4
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
27 May 5 near predicted monthly values
28 May 5 Near predicted monthly values
29 May 5 Near predicted monthly values
COMMENT: Mostly normal HF conditions over the last 24 hours for
all regions, with continued sporadic E for Northern AUS and
Equatorial regions. Enhanced conditions for Antarctic and southern
Australian regions possible. Expect these conditions to prevail
over the next 3 days with near predicted monthly MUF values.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 25 May
Daily Proton Fluence >1 MeV: 6.0E+05
Daily Proton Fluence >10 MeV: 2.0E+04
Daily Electron Fluence >2 MeV: 3.60E+05 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A1.0
ACE Satellite Solar Wind Day Averaged Data for 25 May
Speed: 334 km/sec Density: 0.8 p/cc Temp: 38400 K Bz: 0 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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