It looks like the major to severe geomagnetic storming that I forecasted began at approximately 1800 UTC today. It was preceeded at approximately 1600 UTC by another huge X1 class solar flare and day
The Kp index peaked at a 9 for approximately 9 hours which is at severe geomagnetic storming levels! The current storm is now subsiding but with 2-3 more Earth facing coronal mass ejections currently
After a brief respite strong (Kp-7) to moderate (Kp-6) geomagnetic storming began at approximately 0000 UTC today. The latest coronal mass ejection shock wave arrived at approximately 0900 UTC, court
Sunspot group # 10693 has produced two more very large and power solar flares. An M9 occurred at approximately 1659 UTC on November 9, 2004 and an X2 at approximately 0141 UTC on November 10, 2004. B
Severe to extreme geomagnetic storming continues globally. Both of the recent M9 and X3 solar flares produced Earth facing coronal mass ejections in the last 18 hours, so more geomagnetic storming is
Our latest severe (Kp-8) to extreme (Kp-9) geomagnetic storm has come to an end. Unfortunately though the very fast moving (1000+ k/s) partial halo coronal mass ejection released by sunspot group #10
Looking at LASCO image movies of the last two coronal mass ejections I overestimated the amount that was Earth directed. The end result in our favor is that the related current geomagnetic storming i
Both magnetic poles and adjacent regions are negatively impacted by polar cap absorption. 73, Thomas F. Giella, KN4LF Retired Space & Atmospheric Weather Forecaster Plant City, FL, USA Grid Square EL
Butch et all, Considering you mentioned F3 layer HF propagation and PACTOR interference of PSK31 in one email I wanted to make everyone aware of another IPS Australia F3 layer .pdf file: http://www.k
Hi David, I had trouble following the article because of the way it is laid out. Page 1 ends in mid sentence and I can't find where it begins elsewhere. In any event I still get the gist of the artic
SIDC URSIGRAM 41113 SIDC SOLAR BULLETIN 13 Nov 2004, 1159UT SIDC FORECAST (valid from 1230UT, 13 Nov 2004 until 15 Nov 2004) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEO
SIDC URSIGRAM 41114 SIDC SOLAR BULLETIN 14 Nov 2004, 1214UT SIDC FORECAST (valid from 1230UT, 14 Nov 2004 until 16 Nov 2004) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEO
Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Environment Center and the U.S. Air Force. Updated 2004 Nov 13 2210 UTC Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number
SIDC URSIGRAM 41115 SIDC SOLAR BULLETIN 15 Nov 2004, 1201UT SIDC FORECAST (valid from 1230UT, 15 Nov 2004 until 17 Nov 2004) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEO
Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Environment Center and the U.S. Air Force. Updated 2004 Nov 14 2210 UTC Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number
SIDC URSIGRAM 41116 SIDC SOLAR BULLETIN 16 Nov 2004, 1211UT SIDC FORECAST (valid from 1230UT, 16 Nov 2004 until 18 Nov 2004) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEO
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 320 Issued at 2200Z on 15 Nov 2004 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity rema
SIDC URSIGRAM 41117 SIDC SOLAR BULLETIN 17 Nov 2004, 1214UT SIDC FORECAST (valid from 1230UT, 17 Nov 2004 until 19 Nov 2004) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEO
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 321 Issued at 2200Z on 16 Nov 2004 IA. Analysis of Solar Active Regions and Activity from 15/2100Z to 16/2100Z: Solar activity was
It's just a generalization but: Low 0-30 deg Mid 31-60 deg High 61-90 deg Then there are issues of physical latitude and magnetic latitude. Most of the lower 48 states of the U.S. fall within the mid