Path: news.cs.tut.fi!news.funet.fi!news.tele.fi!uunet!gatech!howland.reston.ans.net!ux1.cso.uiuc.edu!uwm.edu!caen!batcomputer!munnari.oz.au!metro!mippet.ci.com.au!eram!dave From: dave@eram.esi.COM.AU (Dave Horsfall) Newsgroups: aus.radio,rec.radio.info Subject: Daily IPS Report - 2 Jun 93 Message-ID: <4002@eram.esi.COM.AU> Date: 2 Jun 93 00:46:46 GMT Followup-To: rec.radio.amateur.misc,aus.radio Distribution: world Lines: 87 Approved: rec-radio-info@ve6mgs.ampr.ab.ca IPS RADIO AND SPACE SERVICES AUSTRALIA Daily Solar And Geophysical Report Issued at 2330 UT 1 June 1993 Summary for 1 June and Forecast up to 4 June IPS Warning No. 17 will be issued later today. ----------------------------------------------------------- 1A. SOLAR SUMMARY Activity: low Flares: none. Observed 10.7 cm flux/Equivalent Sunspot Number : 137/090 1B. SOLAR FORECAST 02 June 03 June 04 June Activity Low Low to moderate Low to moderate Fadeouts None expected Possible Possible Forecast 10.7 cm flux/Equivalent Sunspot Number : 135/087 1C. SOLAR COMMENT None. ----------------------------------------------------------- 2A. MAGNETIC SUMMARY Geomagnetic field at Learmonth : quiet Estimated Indices : A K Observed A Index 31 May Learmonth 00 0000 1000 Fredericksburg 05 06 Planetary 05 06 2B. MAGNETIC FORECAST DATE Ap CONDITIONS 02 Jun 05 Quiet. 03 Jun 10 Quiet to unsettled. 04 Jun 20 Unsettled to active. 2C. MAGNETIC COMMENT Active to minor storm levels are expected at times from June 5-6, due to a coronal hole. Latest observations suggest unsettled to active levels only for the 4th. 3A. GLOBAL HF PROPAGATION SUMMARY Propagation conditions : Low Lats: good. Mid Lats: good. High Lats: poor to fair. PCA Event : None. 3B. GLOBAL HF PROPAGATION FORECAST Propagation conditions are expected to be good at low and mid lats, and poor to fair at high lats. 3C. GLOBAL HF PROPAGATION COMMENT Degraded HF propagation conditions are expected from June 5-6, in association with the forecast geomagnetic activity. ----------------------------------------------------------- 4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY MUFs at Sydney were near predicted June values 00-15UT, and 20-40% enhanced thereafter. T index: 72 4B. AUSTRALIAN REGION IONOSPHERIC FORECAST DATE T-index MUFs 02 Jun 75 Near predicted monthly values during the first half of the day, and 20-40% enahnced thereafter. 03 Jun 70 Near predicted monthly values during the first half of the day, and 10-20% enahnced thereafter. 04 Jun 70 Near predicted monthly values during the first half of the day, and 10-20% enahnced thereafter. Predicted Monthly T Index for June is 60. 4C. AUSTRALIAN REGION COMMENT Sporadic E layer was present intermittently yesterday. Similar conditions are expected for today. Degraded HF propagation conditions are expected from June 5-6 in association with the forecast geomagnetic activity. No significant variations in MUFs are expected, however, relative to recent behaviour. -- Dave Horsfall (VK2KFU) VK2KFU @ VK2RWI.NSW.AUS.OC PGP 2.2 dave@esi.COM.AU ...munnari!esi.COM.AU!dave available