[Ips-dhfpr] SWS Daily HF Prop Report - 15 May 22 issued 2331 UT on 15 May 2022 [SEC=OFFICIAL]

Regional Warning Centre rwc at ips.gov.au
Mon May 16 09:31:07 EST 2022


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 MAY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 MAY) 
Date   T index  Conditions    
15 May    94    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.2    0008UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Enhanced by 25% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 45% during local night.
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Enhanced by 30% during local day.
      Enhanced by 50% during local night.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Apr      77
May      51
Jun      54


2. FORECAST (16 MAY - 18 MAY)
Date   T index  Conditions       MUFs                              
16 May    80    Normal           Near to 15% above predicted 
                                 monthly values
17 May    80    Normal           Near to 15% above predicted 
                                 monthly values    
18 May    80    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: SWS SWF HF Communications Warning 43 was issued on 14 
May and is current for 15-16 May. Maximum usable frequencies 
(MUFs) on UT day 15-May were near monthly predicted values to 
mildly enhanced. Spread-F was observed at Hobart during night 
hours. MUFs are expected to be mostly near monthly predicted 
values to slightly enhanced during 16-18 May, although there 
is a chance that slight depressions may be observed at mid-high 
latitudes due to geomagnetic disturbances. Short-wave fadeouts 
are possible during this period.

----------------------------------------------------------
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 

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