[Ips-dsgr] SWS Daily Report - 01 April 18 issued 2332 UT on 01 Apr 2018 [SEC=UNCLASSIFIED]
rwc
rwc at ips.gov.au
Mon Apr 2 09:32:23 EST 2018
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/01 APRIL 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 01 APRIL AND FORECAST FOR 02 APRIL - 04 APRIL
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 01 Apr: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Apr: 69/3
1B. SOLAR FORECAST
02 Apr 03 Apr 04 Apr
Activity Very low to low Very low to low Very low to low
Fadeouts None expected None expected None expected
10.7cm/SSN 69/3 69/3 69/3
COMMENT: Solar activity was Very Low on UT day 01 April. Active
Region 2703(S10E34) produced two B-class flares. The largest
flare, B9 peaked at 1308UT. There were no earthward directed
CMEs observed on 01 April in the available imagery. Very Low
to Low levels of solar flare activity are expected for the next
three UT days, 02-04 April. Over the last 24 hours the solar
wind was slightly enhanced, varied between 420-475 Km/s. The
north-south component of the interplanetary magnetic field (Bz)
ranged between +/-3nT mostly neutral. Btotal was mostly near
5nT. Solar wind speeds are expected to be mostly at nominal levels
over the next three days.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Apr: Quiet
Estimated Indices 01 Apr : A K
Australian Region 4 22112101
Cocos Island 2 11111001
Darwin 3 21112101
Townsville 4 22112111
Learmonth 4 22222001
Alice Springs 2 11112001
Canberra 2 11112100
Launceston 4 22212101
Hobart 3 12112101
Estimated Antarctic Regional K Indices 01 Apr :
Macquarie Island 2 11112000
Casey 11 34332111
Mawson 11 23221234
Davis 10 23331123
Observed Regional daily pc3 Indices 01 Apr :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 13 (Quiet)
Canberra 37 (Quiet to unsettled)
Melbourne NA
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 International Center for Space Weather
Science and Education, Japan.
Estimated AFr/Ap Indices 01 Apr : A
Fredericksburg 6
Planetary 6
Observed AFr/Ap Indices 31 Mar : A K
Fredericksburg 6
Planetary 5 3211 1101
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Apr 7 Quiet
03 Apr 5 Quiet
04 Apr 5 Quiet
COMMENT: Quiet geomagnetic conditions observed across the Australian
region over the last 24 hours. Mostly Quiet conditions expected
for 02-04 April.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Apr Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Apr Normal Normal Normal
03 Apr Normal Normal Normal
04 Apr Normal Normal Normal
COMMENT: Expect mostly Normal HF conditions the next 24 hours.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Apr 13
Observed Australian Regional MUFs
Cocos Island Region:
No data available.
Niue Island Region:
Depressed by 15% during local day.
Near predicted monthly values during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
Mar 2
Apr 2
May 1
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Apr 8 Near predicted monthly values
03 Apr 8 Near predicted monthly values
04 Apr 8 Near predicted monthly values
COMMENT: Normal HF conditions in the Australian region for 01
April. Observed isolated periods of sporadic E throughout the
Australian region. Expect mostly near predicted MUFs over the
next three days.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 31 Mar
Daily Proton Fluence >1 MeV: 8.8E+05
Daily Proton Fluence >10 MeV: 1.6E+04
Daily Electron Fluence >2 MeV: 1.60E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:14%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A2.0
DSCOVR Satellite Solar Wind Day Averaged Data for 31 Mar
Speed: 432 km/sec Density: 7.6 p/cc Temp: 173000 K Bz: 1 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
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Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
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Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
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