[Ips-dhfpr] SWS Daily HF Prop Report - 13 December 16 issued 2330 UT on 13 Dec 2016 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 DECEMBER 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 DECEMBER) 
Date   T index  Conditions    
13 Dec   -19    Poor-fair      

Flares: None

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 25% during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Nov      3
Dec      24
Jan      23


2. FORECAST (14 DECEMBER - 16 DECEMBER)
Date   T index  Conditions       MUFs                              
14 Dec   -10    Poor-fair        0 to 30% below predicted monthly 
                                 values
15 Dec    -5    Poor-fair        0 to 25% below predicted monthly 
                                 values    
16 Dec     0    Poor-fair        0 to 20% below predicted monthly 
                                 values   

COMMENT: SWS HF Communications Warning 66 was issued on 12 December 
and is current for 12-14 Dec. Conditions for HF radio wave propagation 
were depressed at all latitudes in the Australian region during 
13 Dec UT. Local daily T indices ranged between -31 at Darwin 
and Norfolk Island to -1 at Niue. Conditions are expected to 
trend towards predicted monthly values during the next 3 days. 
HF users are advised to use frequencies lower than the predicted 
monthly values. Mid-latitude sporadic E layers are prevalent 
on an almost daily basis.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

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.