[Ips-dsgr] SWS Daily Report - 26 March 22 issued 2331 UT on 26 Mar 2022 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Sun Mar 27 10:31:24 EST 2022
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/26 MARCH 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 26 MARCH AND FORECAST FOR 27 MARCH - 29 MARCH
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 26 Mar: Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 26 Mar: 119/71
1B. SOLAR FORECAST
27 Mar 28 Mar 29 Mar
Activity Low Low Low
Fadeouts None expected None expected None expected
10.7cm/SSN 119/71 115/66 115/66
COMMENT: Solar activity was low on UT day 26 Mar with a single
C-class flare. There are five numbered regions on the solar disc,
those in the eastern hemisphere appearing more likely to be active.
No new Earth-directed CMEs were observed. Solar activity is likely
to be low during 27-29 Mar. The solar wind speed varied between
380-430 km/s, currently around 415 km/s. Interplanetary magnetic
field (IMF) total strength (Bt) peaked at 9 nT due to coronal
hole effects. The north-south IMF component (Bz) varied between
+/-7 nT. This coronal hole disturbance is likely to continue
during 27-28 Mar and settle during 29 Mar.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 26 Mar: Quiet to Unsettled
Estimated Indices 26 Mar : A K
Australian Region 4 11010232
Darwin 5 11110232
Townsville 5 21020232
Learmonth 4 11010232
Alice Springs 4 11010232
Gingin 3 10010231
Canberra 4 10020132
Hobart 5 11120232
Estimated Antarctic Regional K Indices 26 Mar :
Macquarie Island 6 00030241
Casey 8 23320132
Mawson 13 32111353
Observed Regional daily pc3 Indices 26 Mar :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 0 (Quiet)
Hobart 2 (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 International Center for Space Weather
Science and Education, Japan.
Estimated AFr/Ap Indices 26 Mar : A
Fredericksburg 7
Planetary 9
Observed AFr/Ap Indices 25 Mar : A K
Fredericksburg 10
Planetary 11 3323 2232
2B. MAGNETIC FORECAST
Date Ap Conditions
27 Mar 15 Unsettled to Active
28 Mar 12 Unsettled to Active
29 Mar 8 Quiet to Unsettled
COMMENT: Geomagnetic conditions were quiet to unsettled in the
Australian region on UT day 26 Mar, with quiet to minor storm
levels in the Antarctic region. Due to coronal hole effects,
the Australian region could experience unsettled to active periods
during 27-28 Mar, easing during 29 Mar.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
26 Mar Normal Normal-fair Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
27 Mar Normal Normal Normal-fair
28 Mar Normal Normal Normal-fair
29 Mar Normal Normal Normal-fair
COMMENT: Mostly normal HF conditions are expected for 27-29 Mar,
with mild degradations possible at high latitudes.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
26 Mar 56
Observed Australian Regional MUFs
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 30% over the UT day.
Monthly T index:
Month T index
Feb 59
Mar 42
Apr 44
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
27 Mar 55 Near predicted monthly values
28 Mar 50 Near predicted monthly values
29 Mar 50 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) on UT day 26 Mar were
near monthly predicted values or mildly enhanced. Near monthly
predicted values are expected for 27-29 Mar.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 25 Mar
Daily Proton Fluence >1 MeV: 1.0E+05
Daily Proton Fluence >10 MeV: 4.2E+04
Daily Electron Fluence >2 MeV: 1.80E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B3.4
DSCOVR Satellite Solar Wind Day Averaged Data for 25 Mar
Speed: 439 km/sec Density: 5.7 p/cc Temp: 106000 K Bz: -2 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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