[Ips-dsgr] SWS Daily Report - 28 April 18 issued 2330 UT on 28 Apr 2018 [SEC=UNCLASSIFIED]

Regional Warning Centre rwc at ips.gov.au
Sun Apr 29 09:30:21 EST 2018


SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/28 APRIL 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 28 APRIL AND FORECAST FOR 29 APRIL - 01 MAY
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 28 Apr:  Very low

Flares: none.

Observed 10.7 cm flux/Equivalent Sunspot Number for 28 Apr:  70/5


1B. SOLAR FORECAST
             29 Apr             30 Apr             01 May
Activity     Very low           Very low           Very low
Fadeouts     None expected      None expected      None expected
10.7cm/SSN    70/5               70/5               70/5

COMMENT: Solar activity was at very low levels today (UT day 
28 April). No Earth-directed CMEs were observed in the available 
imagery during the last 24 hours. The solar wind speed varied 
from 370 km/s to 400 km/s through the UT day today. The IMF Bt 
varied mostly between 2 and 6 nT. The Bz component of IMF showed 
variations between +4/-2 nT during most parts of the day today, 
staying positive for longer periods of time. Very Low levels 
of solar flare activity are expected for the next three UT days, 
29 April-01 May.

-----------------------------------------------------------
2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 28 Apr: Quiet

Estimated Indices 28 Apr : A   K           
   Australian Region       1   21001000
      Cocos Island         2   21001100
      Darwin               2   21001101
      Townsville           -   --------
      Learmonth            2   22001000
      Alice Springs        1   11001001
      Culgoora             2   21101001
      Gingin               1   21001000
      Canberra             1   11011000
      Launceston           2   22011000
      Hobart               -   --------    

Estimated Antarctic Regional K Indices 28 Apr :
      Macquarie Island     1   11010000
      Casey                5   33201000
      Mawson               7   43102111

Observed Regional daily pc3 Indices 28 Apr : 
      Darwin               0   (Quiet)
      Townsville           0   (Quiet)
      Learmonth            0   (Quiet)
      Alice Springs        0   (Quiet)
      Gingin               9   (Quiet)
      Canberra            21   (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 28 Apr : A 
           Fredericksburg         5
           Planetary              5                         

Observed AFr/Ap Indices 27 Apr :  A   K
           Fredericksburg         5
           Planetary              6   1001 1323     


2B. MAGNETIC FORECAST 
Date      Ap    Conditions
29 Apr     4    Quiet
30 Apr     4    Quiet
01 May     4    Quiet

COMMENT: Geomagnetic conditions were quiet across the Australian 
region during the UT day 28 April. Geomagnetic conditions in 
the region are expected to stay at quiet levels for the next 
three days (29 April to 01 May).

-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
	            Latitude Band
Date        Low            Middle         High 
28 Apr      Normal         Normal         Normal         

PCA Event : No event.

3B. GLOBAL HF PROPAGATION FORECAST
	            Latitude Band
Date        Low            Middle         High 
29 Apr      Normal         Normal         Normal
30 Apr      Normal         Normal         Normal
01 May      Normal         Normal         Normal

COMMENT: MUFs were mainly near predicted monthly values with 
periods of minor to moderate MUF enhancements recorded in some 
mid- and high-latitude areas on UT day 28 April. HF conditions 
may be expected to stay mostly at normal levels for the next 
three days (29 April to 01 May).

-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY


Date   T index
28 Apr     7

Observed Australian Regional MUFs
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      No data available during local day.
      No data available during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% 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
29 Apr     6    Near predicted monthly values
30 Apr     6    Near predicted monthly values
01 May     6    Near predicted monthly values

COMMENT: MUFs were mainly near predicted monthly values over 
most of the Aus/NZ region with periods of minor to moderate MUF 
enhancements recorded in some southern areas on UT day 28 April. 
HF conditions may be expected to stay mostly at normal levels 
in the region for the next three days (29 April to 01 May).

-----------------------------------------------------------
5. SPACE ENVIRONMENT SUMMARY

GOES satellite data for 27 Apr
       Daily Proton Fluence >1 MeV:   1.7E+06
       Daily Proton Fluence >10 MeV:  1.7E+04
       Daily Electron Fluence >2 MeV: 1.20E+08   (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:12%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
       X-ray background: A2.5

DSCOVR Satellite Solar Wind Day Averaged Data for 27 Apr
Speed: 377 km/sec  Density:    8.4 p/cc  Temp:    71300 K  Bz:   1 nT

(Courtesy Space Weather Prediction Center, Boulder USA)
-----------------------------------------------------------

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information.  The views expressed in 
this message are those of the individual sender, unless 
specifically stated to be the views of SWS.  If you are not 
the intended recipient, please contact the sender immediately 
and delete all copies of this e-mail and attachments. 
To unsubscribe from an IPS mail list either send an email to 
"MAIL_LIST"-leave at ips.gov.au or go to
http://www.sws.bom.gov.au/mailman/listinfo/"MAIL_LIST".
Information about training can be obtained from
http://www.sws.bom.gov.au/mailman/listinfo/ips-training.
General information is available from
http://www.sws.bom.gov.au/mailman/listinfo/ips-info.




More information about the ips-dsgr mailing list