Xref: news.cs.tut.fi aus.radio:443 rec.radio.amateur.misc:52452 rec.radio.info:5148 Newsgroups: aus.radio,ips.solar.activity,rec.radio.amateur.misc,rec.radio.info Path: news.cs.tut.fi!news.funet.fi!sunic!trane.uninett.no!nac.no!ifi.uio.no!wabbit.cc.uow.edu.au!news.ci.com.au!metro!ipso!rwc From: rwc@flare.syd.ips.oz.au (Regional Warning Centre) Subject: IPS Daily Report - 28 May 94 Message-ID: <1994May28.233558.29908@ips.oz.au> Followup-To: aus.radio,rec.radio.amateur.misc Sender: news@ips.oz.au (Usenet News) Nntp-Posting-Host: flare.syd.ips.oz.au Organization: IPS Radio and Space Services. Sydney, Australia. Date: Sat, 28 May 1994 23:35:58 GMT Approved: rec-radio-info@ve6mgs.ampr.ab.ca Lines: 89 SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT ISSUED AT 28/2330Z MAY 1994 BY IPS RADIO AND SPACE SERVICES FROM THE REGIONAL WARNING CENTRE (RWC), SYDNEY. SUMMARY FOR 28 MAY AND FORECAST UP TO 31 MAY IPS Warning 15 was issued on 26 May and is current for interval 28 May to 7 June. ----------------------------------------------------------- 1A. SOLAR SUMMARY Activity: very low Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number : 070/005 1B. SOLAR FORECAST 29 May 30 May 31 May Activity Very low Very low Very low Fadeouts None expected None expected None expected Forecast 10.7 cm flux/Equivalent Sunspot Number : 070/005 1C. SOLAR COMMENT None. ----------------------------------------------------------- 2A. MAGNETIC SUMMARY Geomagnetic field at Learmonth: quiet to unsettled until 12UT, active to minor storm levels thereafter. Estimated Indices : A K Observed A Index 27 May Learmonth 21 2122 4554 Fredericksburg 24 05 Planetary 28 06 Observed Kp for 27 May: 2212 2222 2B. MAGNETIC FORECAST DATE Ap CONDITIONS 29 May 40 Active to minor storm. 30 May 40 Active to minor storm. 31 May 35 Active to minor storm. 2C. MAGNETIC COMMENT disturbances expected until 7 June due to a coronal hole. 3A. GLOBAL HF PROPAGATION SUMMARY LATITUDE BAND DATE LOW MIDDLE HIGH 28 May normal normal-fair fair PCA Event : None. 3B. GLOBAL HF PROPAGATION FORECAST LATITUDE BAND DATE LOW MIDDLE HIGH 29 May normal-fair normal-fair poor-fair 30 May normal normal-fair fair 31 May normal normal-fair fair-poor 3C. GLOBAL HF PROPAGATION COMMENT NONE. ----------------------------------------------------------- 4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY MUFs at Sydney were near predicted monthly values to 15% depressed. Observed T index for 28 May: 15 Predicted Monthly T Index for May is 30. 4B. AUSTRALIAN REGION IONOSPHERIC FORECAST DATE T-index MUFs 29 May 0 15 to 20% below predicted monthly values. 30 May 15 Near predicted to 15% depressed. 31 May 15 Near predicted to 15% depressed. 4C. AUSTRALIAN REGION COMMENT Degraded HF comms expected until 8 June due to coronal hole sourced activity. -- IPS Regional Warning Centre, Sydney |IPS Radio and Space Services email: rwc@ips.oz.au fax: +61 2 4148331 |PO Box 5606 RWC Duty Forecaster tel: +61 2 4148329 |West Chatswood NSW 2057 Recorded Message tel: +61 2 4148330 |AUSTRALIA