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Title: Northern Lights here tonight Post by: Bill, KD0HG on September 11, 2005, 12:11:29 AM Went out for a walk wiith Chester the Great Pyrenees on a beautiful late summer evening around 10 PM local, there was quite a pronounced blueish band of aurora low on the northern horizon from about 330 to 30 degrees azimuth without much elevation to it. It faded out about a half hour later.
I really need to get my VHF act together and get some 6M and 2M yagis up someday. -bill Title: Re: Northern Lights here tonight Post by: W1UJR on September 11, 2005, 09:08:42 AM Explains the bands!
75 meters is dead, few local signals, some form the mid area, but no long distance at all. Title: Re: Northern Lights here tonight Post by: W3SLK on September 11, 2005, 09:48:30 AM Here's the latest as of 8:40 AM
SFI:100 A:25 K:6 frm 9 (191 nT) 1200 11 Sep Frcst: SWX next 24h:strong: G3 S3 R3 Obs: SWX last 24h:severe: G4 S3 R3 6h hi:(none) 24h hi:X2.1(2211Z 09/10) SSN: 59 (09/10/2005) Au: 10 S Wind: Unavailable Bz: -2.6 nT at 2005 Sep 11 1213Z Global HF Propagation Conditions for 1100Z on 11 Sep, 2005 Low Latitude: Poor Mid Latitude: Poor Hi Latitude: Poor(PCA) Warning (1165): Geomagnetic K-index of 4 expected From: 2005 Sep 10 1559 UTC To: 2005 Sep 10 2359 UTC Condition: Persistence Warning (1166): Geomagnetic K-index of 4 expected From: 2005 Sep 10 1559 UTC To: 2005 Sep 11 2359 UTC Condition: Persistence. Extends Warning #1165. Warning (139): Geomagnetic K-Index of 6 expected From: 2005 Sep 11 0130 UTC To: 2005 Sep 11 1600 UTC Condition: Onset Warning (28): Geomagnetic K-index of 7 or greater expected From: 2005 Sep 11 0540 UTC To: 2005 Sep 11 1600 UTC Condition: Onset Warning (280): Proton 10MeV Integral Flux above 10pfu expected From: 2005 Sep 09 2359 UTC To: 2005 Sep 11 2359 UTC Condition: Persistence. Extends Warning #279. Warning (35): Proton 100MeV Integral Flux above 1pfu expected From: 2005 Sep 08 0340 UTC To: 2005 Sep 11 2359 UTC Condition: Persistence. Extends Warning #34. Warning (528): Geomagnetic K-index of 5 expected From: 2005 Sep 10 1616 UTC To: 2005 Sep 10 2359 UTC Condition: Onset Warning (529): Geomagnetic K-index of 5 expected From: 2005 Sep 10 1616 UTC To: 2005 Sep 11 2359 UTC Condition: Persistence. Extends Warning #528. Warning (57): Geomagnetic Sudden Impulse expected From: 2005 Sep 11 0115 UTC To: 2005 Sep 11 0215 UTC Condition: IP Shock Passage Observed: 2005 Sep 11 0100 UTC Alert (17): Geomagnetic K-index of 8 Period: 0600-0900 UTC Threshold Reached on 2005 Sep 11 0637 UTC Alert (231): Geomagnetic K-index of 6 Period: 0300-0600 UTC Threshold Reached on 2005 Sep 11 0342 UTC Alert (232): Geomagnetic K-index of 6 Period: 0900-1200 UTC Threshold Reached on 2005 Sep 11 0952 UTC Alert (5): Geomagnetic K-index of 9 Period: 0600-0900 UTC Threshold Reached on 2005 Sep 11 0645 UTC Alert (509): Geomagnetic K-index of 5 Period: 1500-1800 UTC Threshold Reached on 2005 Sep 10 1617 UTC Alert (76): Geomagnetic K-index of 7 Period: 0600-0900 UTC Threshold Reached on 2005 Sep 11 0612 UTC Your help is needed! Support: http://hfradio.org/notice.html How to read these: http://hfradio.org/eahelp.html More Info and Unsubscribe: http://prop.hfradio.org/ealert/ Want to learn about Space Weather? Take the Space Weather Education Course: http://www.hfradio.org/swp_course/ Title: Re: Northern Lights here tonight Post by: K2FW on September 11, 2005, 09:59:30 AM It's no wonder. Band conditions on 75Mtrs this morning were quite bad! Some signals were still coming through but were down some 20-40 db from usual.
Title: Re: Northern Lights here tonight Post by: Ed W1XAW on September 11, 2005, 11:02:21 AM It's no wonder. Band conditions on 75Mtrs this morning were quite bad! Some signals were still coming through but were down some 20-40 db from usual. My experience last night on the bottom of 80 was that 300W from a pair of 811's didn't produce squat even after about 15 minutes of cqing. Later I listeed on the bottom of 40 before bed using a cheap bedside SW with BFO and heard plently of activity. 80M was dead. I did hear some guys in NE fb on AM but not as strong as usual. 73 de W1XAW, Ed Title: Re: Northern Lights here tonight Post by: Pete, WA2CWA on September 11, 2005, 01:54:01 PM It's no wonder. Band conditions on 75Mtrs this morning were quite bad! Some signals were still coming through but were down some 20-40 db from usual. My experience last night on the bottom of 80 was that 300W from a pair of 811's didn't produce squat even after about 15 minutes of cqing. Later I listeed on the bottom of 40 before bed using a cheap bedside SW with BFO and heard plently of activity. 80M was dead. I did hear some guys in NE fb on AM but not as strong as usual. 73 de W1XAW, Ed Probably because the D-layer got all energized which enhances D-layer adsorption on the lower frequencies (i.e. 75 meters late mornings and early afternoons on most days). As you go higher in frequency, the D-layer adsorption is less effective. Normally, under “average” conditions, the D-layer disappears, or is less effective, during the evening hours. When you have high sun activity like this, the D-layer becomes a giant RF sponge Title: Re: Northern Lights here tonight Post by: W1UJR on September 11, 2005, 02:38:30 PM Probably because the D-layer got all energized which enhances D-layer adsorption on the lower frequencies (i.e. 75 meters late mornings and early afternoons on most days). As you go higher in frequency, the D-layer adsorption is less effective. Normally, under “average” conditions, the D-layer disappears, or is less effective, during the evening hours. When you have high sun activity like this, the D-layer becomes a giant RF sponge That "Darn D Layer". :o 20 meters is booming, some sort of "corntest", but the low bands are dead, can just hear CHU. Title: Re: Northern Lights here tonight Post by: Pete, WA2CWA on September 11, 2005, 05:44:11 PM 6 meters has been hot all weekend, cause it's "VHF contest weekend". No aurora activity to speak of. Lots of scatter between 12 & 3 AM Sunday morning, but that's normal.
Title: Re: Northern Lights here tonight Post by: W1UJR on September 11, 2005, 05:51:32 PM Pete, Your avatar is trippy, I think I feel a seizure coming on. :o http://www.ebaumsworld.com/flash/epilepsy2.html Title: Re: Northern Lights here tonight Post by: Pete, WA2CWA on September 11, 2005, 05:56:27 PM Pete, Your avatar is trippy, I think I feel a seizure coming on. :o http://www.ebaumsworld.com/flash/epilepsy2.html You should watch it after several beers for the real effect. Title: Re: Northern Lights here tonight Post by: W3SLK on September 11, 2005, 05:59:49 PM I'd rather watch it after some Mr. Natural 8) (Yo dude! I'm gettin a Dell!)
Title: Re: Northern Lights here tonight Post by: WA1GFZ on September 11, 2005, 09:57:56 PM Beautiful blue sky tonight on the way home from the beach. A bit of glow but no light show. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
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