[Ips-dhfpr] IPS Daily HF Prop Report - 23 July 13 issued 2329 UT on 23 Jul 2013

rwc rwc at ips.gov.au
Wed Jul 24 09:29:52 EST 2013


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 JULY 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 JULY) 
Date   T index  Conditions    
23 Jul    70    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 45% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for July:  69


2. FORECAST (24 JULY - 26 JULY)
Date   T index  Conditions       MUFs                              
24 Jul    70    Normal           Near predicted monthly values
25 Jul    65    Normal           Near predicted monthly values    
26 Jul    65    Normal           Near predicted monthly values   

COMMENT: MUFs were near predicted monthly values for 24 hour 
averages at most locations during daylight hours over the last 
24 hours with the daily T index close to predicted monthly average. 
However there was significant hourly variability with night-time 
MUFs depressed, particularly across low latitudes, and low-latitude 
daylight enhancements. Expect mostly normal average HF conditions 
next two days, with MUFs perhaps slightly below average. There 
should be Unsettled-Active geomagnetic activity from late on 
25-Jul for ~2 days, causing larger hourly MUF variations.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

IPS Radio and Space Services        email: asfc at ips.gov.au
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