[Ips-dhfpr] ASWFC Daily HF Prop Report - 15 March 23 issued 2331 UT on 15 Mar 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 MARCH) 
Date   T index  Conditions    
15 Mar   112    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 45% during local day.
      Enhanced by 90% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 1145UT 14/03, Ended at 1220UT 14/03
 and, 10MeV Proton/PCA Event Began at 1355UT 14/03, Ended at 1435UT 14/03
 and, 10MeV Proton/PCA Event Began at 1555UT 14/03, Ended at 1630UT 14/03
 and, 10MeV Proton/PCA Event Began at 1740UT 14/03, Ended at 0515UT 15/03

Monthly T index:
Month  T index
Feb      117
Mar      80
Apr      80


2. FORECAST (16 MARCH - 18 MARCH)
Date   T index  Conditions       MUFs                              
16 Mar    90    Normal-fair      Near predicted monthly values 
                                 to 20% depressed
17 Mar   100    Normal           Near predicted monthly values    
18 Mar   120    Normal           Near predicted monthly values   

COMMENT: ASWFC Preliminary HF Communications Warning 29 was issued 
on 15 March and is current for 16 Mar only. Maximum usable frequencies 
(MUFs) on UT day 15-Mar in the Australian region were near predicted 
monthly values during the local day and up tp 25% enhanced during 
local night. Spread-F was observed at Perth and Hobart during 
local night hours. MUFs are expected to be near predicted monthly 
values over 16-18 Mar, with depressions of 20% possible on 16-17 
Mar due to anticipated geomagnetic activity from a CME first 
observed on 13-Mar.

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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