Highlight: Severe Geomagnetic Storm in progress due to arrival of CME - Some reporting stations show K of 9. Current Kp is 8 - and aurora index is 10. This is expected to continue through the day. HF conditions are poor. MW conditions are poor. Visual Aurora possible at low-latitudes. Aurora-mode (Au and Au-Es) is possible and reported. Visual Aurora is occurring now in night regions, and is possible to occur during darkness tonight in the Western Hemisphere (e.g., North America). More: http://prop.hfradio.org/ Live Forum: http://hfradio.org/forums/ Messages in chronologic order: Space Weather Message Code: ALTK07 Serial Number: 48 Issue Time: 2003 Nov 20 1226 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2003 Nov 20 1225 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov SFI:155 A:14 K:7 frm 6 (230 nT) 1500 20 Nov Frcst: SWX next 24h:strong: G3 S1 R2 Obs: SWX last 24h:strong: G3 R2 6h hi:C4.1(1018Z 11/20) 24h hi:M9.6(0747Z 11/20) SSN: 114 (11/19/2003) Au: 10 S Wind: 615 km/s @ 3.2 protons/cm3 Bz: -55.8 nT at 2003 Nov 20 1503Z Global HF Propagation Conditions for 1400Z on 20 Nov, 2003 Low Latitude: Poor Mid Latitude: Poor Hi Latitude: Poor Warning (14): Geomagnetic K-index of 7 or greater expected From: 2003 Nov 20 1220 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Warning (208): Proton 10MeV Integral Flux above 10pfu expected From: 2003 Nov 20 1000 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Warning (33): Geomagnetic Sudden Impulse expected From: 2003 Nov 20 0810 UTC To: 2003 Nov 20 0845 UTC Condition: IP Shock Passage Observed: 2003 Nov 20 0745 UTC Warning (791): Geomagnetic K-index of 4 expected From: 2003 Nov 18 1455 UTC To: 2003 Nov 20 2359 UTC Condition: Persistence. Extends Warning #790. Warning (90): Geomagnetic K-Index of 6 expected From: 2003 Nov 20 0817 UTC To: 2003 Nov 21 1500 UTC Condition: Onset Alert (143): Geomagnetic K-index of 6 Period: 0900-1200 UTC Threshold Reached on 2003 Nov 20 1023 UTC Alert (144): Geomagnetic K-index of 6 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1215 UTC Alert (371): Geomagnetic K-index of 5 Period: 0600-0900 UTC Threshold Reached on 2003 Nov 20 0839 UTC Alert (48): Geomagnetic K-index of 7 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1225 UTC How to read these: http://hfradio.org/eahelp.html Support: http://hfradio.org/notice.html More Info / Unsubscribe: http://prop.hfradio.org/ealert Space Weather Message Code: ALTK06 Serial Number: 145 Issue Time: 2003 Nov 20 1541 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2003 Nov 20 1540 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov Space Weather Message Code: ALTK07 Serial Number: 49 Issue Time: 2003 Nov 20 1636 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2003 Nov 20 1631 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov Space Weather Message Code: ALTK08 Serial Number: 7 Issue Time: 2003 Nov 20 1655 UTC ALERT: Geomagnetic K-index of 8 Threshold Reached: 2003 Nov 20 1650 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov Space Weather Message Code: WARPX1 Serial Number: 209 Issue Time: 2003 Nov 20 1820 UTC CANCEL WARNING: Proton 10MeV Integral Flux above 10pfu expected Cancel Serial Number: 208 Original Issue Time: 2003 Nov 20 0909 UTC Comment: Protons are no longer expected to reach event threshold. For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov SFI:175 frm 155 A:105 frm 14 K:8 (362 nT) 2100 20 Nov Frcst: SWX next 24h:severe: G4 R1 Obs: SWX last 24h:severe: G4 R2 6h hi:C8.6(1929Z 11/20) 24h hi:M9.6(0747Z 11/20) SSN: 114 (11/19/2003) Au: 10 S Wind: 554 km/s @ 17.7 protons/cm3 Bz: -8.9 nT at 2003 Nov 20 2108Z Global HF Propagation Conditions for 2000Z on 20 Nov, 2003 Low Latitude: Poor Mid Latitude: Poor Hi Latitude: Poor Warning (14): Geomagnetic K-index of 7 or greater expected From: 2003 Nov 20 1220 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Warning (208): Proton 10MeV Integral Flux above 10pfu expected From: 2003 Nov 20 1000 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Cancelled Warning (209): Proton 10MeV Integral Flux above 10pfu expected Warning number 208 has been cancelled. Warning (33): Geomagnetic Sudden Impulse expected From: 2003 Nov 20 0810 UTC To: 2003 Nov 20 0845 UTC Condition: IP Shock Passage Observed: 2003 Nov 20 0745 UTC Warning (791): Geomagnetic K-index of 4 expected From: 2003 Nov 18 1455 UTC To: 2003 Nov 20 2359 UTC Condition: Persistence. Extends Warning #790. Warning (90): Geomagnetic K-Index of 6 expected From: 2003 Nov 20 0817 UTC To: 2003 Nov 21 1500 UTC Condition: Onset Alert (143): Geomagnetic K-index of 6 Period: 0900-1200 UTC Threshold Reached on 2003 Nov 20 1023 UTC Alert (144): Geomagnetic K-index of 6 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1215 UTC Alert (145): Geomagnetic K-index of 6 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1540 UTC Alert (371): Geomagnetic K-index of 5 Period: 0600-0900 UTC Threshold Reached on 2003 Nov 20 0839 UTC Alert (48): Geomagnetic K-index of 7 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1225 UTC Alert (49): Geomagnetic K-index of 7 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1631 UTC Alert (50): Geomagnetic K-index of 7 Period: 1800-2100 UTC Threshold Reached on 2003 Nov 20 1932 UTC Alert (7): Geomagnetic K-index of 8 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1650 UTC Alert (8): Geomagnetic K-index of 8 Period: 1800-2100 UTC Threshold Reached on 2003 Nov 20 2016 UTC How to read these: http://hfradio.org/eahelp.html Support: http://hfradio.org/notice.html More Info / Unsubscribe: http://prop.hfradio.org/ealert Space Weather Message Code: ALTK07 Serial Number: 50 Issue Time: 2003 Nov 20 1938 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2003 Nov 20 1932 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov Severe Geomagnetic Storm in progress due to arrival of CME - Some reporting stations show K of 9. Current Kp is 8 - and aurora index is 10. This is expected to continue through the day. HF conditions are poor. MW conditions are poor. Visual Aurora possible at low-latitudes. Aurora-mode (Au and Au-Es) is possible and reported. Visual Aurora is occurring now in night regions, and is possible to occur during darkness tonight in the Western Hemisphere (e.g., North America). More: http://prop.hfradio.org/ Live Forum: http://hfradio.org/forums/ Space Weather Message Code: ALTK08 Serial Number: 8 Issue Time: 2003 Nov 20 2020 UTC ALERT: Geomagnetic K-index of 8 Threshold Reached: 2003 Nov 20 2016 UTC Synoptic Period: 1800-2100 UTC Active Warning: Yes For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov SFI:175 frm 155 A:105 frm 14 K:8 (362 nT) 2100 20 Nov Frcst: SWX next 24h:severe: G4 R1 Obs: SWX last 24h:severe: G4 R2 6h hi:C8.6(1929Z 11/20) 24h hi:M9.6(0747Z 11/20) SSN: 114 (11/19/2003) Au: 10 S Wind: 554 km/s @ 17.7 protons/cm3 Bz: -8.9 nT at 2003 Nov 20 2108Z Global HF Propagation Conditions for 2000Z on 20 Nov, 2003 Low Latitude: Poor Mid Latitude: Poor Hi Latitude: Poor Warning (14): Geomagnetic K-index of 7 or greater expected From: 2003 Nov 20 1220 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Warning (208): Proton 10MeV Integral Flux above 10pfu expected From: 2003 Nov 20 1000 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Cancelled Warning (209): Proton 10MeV Integral Flux above 10pfu expected Warning number 208 has been cancelled. Warning (33): Geomagnetic Sudden Impulse expected From: 2003 Nov 20 0810 UTC To: 2003 Nov 20 0845 UTC Condition: IP Shock Passage Observed: 2003 Nov 20 0745 UTC Warning (791): Geomagnetic K-index of 4 expected From: 2003 Nov 18 1455 UTC To: 2003 Nov 20 2359 UTC Condition: Persistence. Extends Warning #790. Warning (90): Geomagnetic K-Index of 6 expected From: 2003 Nov 20 0817 UTC To: 2003 Nov 21 1500 UTC Condition: Onset Alert (143): Geomagnetic K-index of 6 Period: 0900-1200 UTC Threshold Reached on 2003 Nov 20 1023 UTC Alert (144): Geomagnetic K-index of 6 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1215 UTC Alert (145): Geomagnetic K-index of 6 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1540 UTC Alert (371): Geomagnetic K-index of 5 Period: 0600-0900 UTC Threshold Reached on 2003 Nov 20 0839 UTC Alert (48): Geomagnetic K-index of 7 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1225 UTC Alert (49): Geomagnetic K-index of 7 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1631 UTC Alert (50): Geomagnetic K-index of 7 Period: 1800-2100 UTC Threshold Reached on 2003 Nov 20 1932 UTC Alert (7): Geomagnetic K-index of 8 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1650 UTC Alert (8): Geomagnetic K-index of 8 Period: 1800-2100 UTC Threshold Reached on 2003 Nov 20 2016 UTC How to read these: http://hfradio.org/eahelp.html Support: http://hfradio.org/notice.html More Info / Unsubscribe: http://prop.hfradio.org/ealert Space Weather Message Code: ALTXMF Serial Number: 63 Issue Time: 2003 Nov 20 2351 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2003 Nov 20 2351 UTC For more information on this Warning or Alert call the Space Weather Office at (303) 497 3171 (24 Hours) or email RWC.Boulder@noaa.gov To modify your request for our products call the Space Environment Center at (303) 497 3205 (8am - 5pm Mountain Time) or email Candice.L.Curtiss@noaa.gov SFI:175 A:103 frm 105 K:5 frm 8 (98 nT) 0000 21 Nov Frcst: SWX next 24h:severe: G4 R1 Obs: SWX last 24h:severe: G4 R2 6h hi:C8.6(1929Z 11/20) 24h hi:M9.6(0747Z 11/20) SSN: 114 (11/19/2003) Au: 10 S Wind: Unavailable Bz: N/A nT at 2003 Nov 20 2358Z Global HF Propagation Conditions for 2300Z on 20 Nov, 2003 Low Latitude: Poor Mid Latitude: Poor Hi Latitude: Poor Warning (14): Geomagnetic K-index of 7 or greater expected From: 2003 Nov 20 1220 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Warning (208): Proton 10MeV Integral Flux above 10pfu expected From: 2003 Nov 20 1000 UTC To: 2003 Nov 20 2359 UTC Condition: Onset Cancelled Warning (209): Proton 10MeV Integral Flux above 10pfu expected Warning number 208 has been cancelled. Warning (33): Geomagnetic Sudden Impulse expected From: 2003 Nov 20 0810 UTC To: 2003 Nov 20 0845 UTC Condition: IP Shock Passage Observed: 2003 Nov 20 0745 UTC Warning (791): Geomagnetic K-index of 4 expected From: 2003 Nov 18 1455 UTC To: 2003 Nov 20 2359 UTC Condition: Persistence. Extends Warning #790. Warning (90): Geomagnetic K-Index of 6 expected From: 2003 Nov 20 0817 UTC To: 2003 Nov 21 1500 UTC Condition: Onset Alert (143): Geomagnetic K-index of 6 Period: 0900-1200 UTC Threshold Reached on 2003 Nov 20 1023 UTC Alert (144): Geomagnetic K-index of 6 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1215 UTC Alert (145): Geomagnetic K-index of 6 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1540 UTC Alert (371): Geomagnetic K-index of 5 Period: 0600-0900 UTC Threshold Reached on 2003 Nov 20 0839 UTC Alert (48): Geomagnetic K-index of 7 Period: 1200-1500 UTC Threshold Reached on 2003 Nov 20 1225 UTC Alert (49): Geomagnetic K-index of 7 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1631 UTC Alert (50): Geomagnetic K-index of 7 Period: 1800-2100 UTC Threshold Reached on 2003 Nov 20 1932 UTC Alert (7): Geomagnetic K-index of 8 Period: 1500-1800 UTC Threshold Reached on 2003 Nov 20 1650 UTC Alert (8): Geomagnetic K-index of 8 Period: 1800-2100 UTC Threshold Reached on 2003 Nov 20 2016 UTC How to read these: http://hfradio.org/eahelp.html Support: http://hfradio.org/notice.html More Info / Unsubscribe: http://prop.hfradio.org/ealert