[Ips-dhfpr] SWS Daily HF Prop Report - 10 December 21 issued 2331 UT on 10 Dec 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/10 DECEMBER 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 DECEMBER) 
Date   T index  Conditions    
10 Dec     8    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Nov      3
Dec      33
Jan      36


2. FORECAST (11 DECEMBER - 13 DECEMBER)
Date   T index  Conditions       MUFs                              
11 Dec    10    Normal           Depressed 15%/near predicted 
                                 monthly values
12 Dec    10    Normal           Depressed 15%/near predicted 
                                 monthly values    
13 Dec    10    Normal           Depressed 15%/near predicted 
                                 monthly values   

COMMENT: SWS HF Communications Warning 38 was issued on 9 December 
and is current for 10-12 Dec. MUFs in the Australian region on 
UT day 10 December were variable ranging from 20% depressed at 
times to near predicted monthly values, possibly due to low levels 
of ionising solar flux. Similar conditions are expected during 
11-13 December. Strong sporadic E frequently observed.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
https://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.