[Ips-dhfpr] ASWFC Daily HF Prop Report - 17 March 24 issued 2330 UT on 17 Mar 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 MARCH 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 MARCH) 
Date   T index  Conditions    
17 Mar   122    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 40% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 0015UT 16/03, Ended at 1450UT 16/03

Monthly T index:
Month  T index
Feb      138
Mar      111
Apr      112


2. FORECAST (18 MARCH - 20 MARCH)
Date   T index  Conditions       MUFs                              
18 Mar   120    Poor             Near predicted monthly values
19 Mar   120    Normal           Near predicted monthly values    
20 Mar   120    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 27 was issued on 
17 March and is current for 17-19 Mar. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 17-Mar were mostly 
near predicted monthly values, with enhancements of up to 15% 
in the southern Australian region during local night. Spread 
F was observed at Hobart during local night hours. Ionospheric 
scintillation was observed at Niue at 17/0928UT and 17/0948UT. 
MUFs are expected to be near predicted monthly values over 18-20 
Mar. Minor shortwave fadeouts are possible.

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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