[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 July 24 issued 2330 UT on 16 Jul 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 JULY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 JULY) 
Date   T index  Conditions    
16 Jul   145    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.4    0301UT  possible   lower  E. Asia/Aust.
  M3.6    0737UT  possible   lower  Mid East/Indian
  X2.0    1326UT  probable   all    European
  M1.6    2125UT  possible   lower  East Pacific/
                                    North American
  M1.9    2206UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 70% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jun      120
Jul      118
Aug      117


2. FORECAST (17 JULY - 19 JULY)
Date   T index  Conditions       MUFs                              
17 Jul   140    Normal           Near to 15% above predicted 
                                 monthly values
18 Jul   135    Normal           Near to 15% above predicted 
                                 monthly values    
19 Jul   135    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 75 was issued on 
16 July and is current for 17-19 Jul. Maximum usable frequencies 
(MUFs) on UT day 16-Jul were near predicted monthly values to 
25% enhanced in the Australian region. Spread F was observed 
at Hobart during local night hours. Ionospheric scintillation 
was observed at Niue from 16/0714-0959 UT. MUFs are expected 
to be near predicted monthly values to 15% enhanced over 17-19 
Jul. Shortwave fadeouts are probable.

----------------------------------------------------------
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.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au