:Product: SWPC Space Weather Alerts oldALTS.txt :Issued: 2013 May 20 0433 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # See http://swpc.noaa.gov/alerts/ for description and other displays # Send comments and suggestions to SWPC.Webmaster@noaa.gov # # SWPC Space Weather Alerts Issued in the last 7 Days #--------------------------------------------------------------------- Space Weather Message Code: SUMSUD Serial Number: 172 Issue Time: 2013 May 19 2322 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2013 May 19 2306 UTC Deviation: 39 nT Station: Boulder #------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 838 Issue Time: 2013 May 19 2317 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2013 May 19 2320 UTC Valid To: 2013 May 20 0700 UTC Warning Condition: Onset NOAA Scale: G1 - Minor Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2085 Issue Time: 2013 May 19 2317 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2084 Valid From: 2013 May 19 0205 UTC Now Valid Until: 2013 May 20 1300 UTC Warning Condition: Persistence Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: WARSUD Serial Number: 130 Issue Time: 2013 May 19 2229 UTC WARNING: Geomagnetic Sudden Impulse expected Valid From: 2013 May 19 2251 UTC Valid To: 2013 May 19 2351 UTC IP Shock Passage Observed: 2013 May 19 2221 UTC #------------------------------------------------- Space Weather Message Code: WATA30 Serial Number: 106 Issue Time: 2013 May 19 1855 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: May 20: G2 (Moderate) May 21: None (Below G1) May 22: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2084 Issue Time: 2013 May 19 1149 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2083 Valid From: 2013 May 19 0205 UTC Now Valid Until: 2013 May 20 0100 UTC Warning Condition: Persistence Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 1639 Issue Time: 2013 May 19 0207 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2013 May 19 0205 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2083 Issue Time: 2013 May 19 0203 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2013 May 19 0205 UTC Valid To: 2013 May 19 1200 UTC Warning Condition: Onset Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: SUMPX1 Serial Number: 67 Issue Time: 2013 May 18 2207 UTC SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2013 May 15 1325 UTC Maximum Time: 2013 May 17 1720 UTC End Time: 2013 May 18 1445 UTC Maximum 10MeV Flux: 41 pfu NOAA Scale: S1 - Minor #------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 837 Issue Time: 2013 May 18 0531 UTC EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 836 Valid From: 2013 May 18 0252 UTC Now Valid Until: 2013 May 18 0900 UTC Warning Condition: Persistence Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2082 Issue Time: 2013 May 18 0302 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2081 Valid From: 2013 May 18 0100 UTC Now Valid Until: 2013 May 18 1200 UTC Warning Condition: Persistence Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: ALTK05 Serial Number: 714 Issue Time: 2013 May 18 0302 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2013 May 18 0300 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 - Minor Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. #------------------------------------------------- Space Weather Message Code: WARK05 Serial Number: 836 Issue Time: 2013 May 18 0254 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2013 May 18 0252 UTC Valid To: 2013 May 18 0600 UTC Warning Condition: Onset NOAA Scale: G1 - Minor Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine. #------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 1638 Issue Time: 2013 May 18 0133 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2013 May 18 0131 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: SUMSUD Serial Number: 171 Issue Time: 2013 May 18 0121 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2013 May 18 0112 UTC Deviation: 31 nT Station: Boulder #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2081 Issue Time: 2013 May 18 0033 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2013 May 18 0100 UTC Valid To: 2013 May 18 0600 UTC Warning Condition: Onset Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: WARSUD Serial Number: 129 Issue Time: 2013 May 18 0031 UTC WARNING: Geomagnetic Sudden Impulse expected Valid From: 2013 May 18 0115 UTC Valid To: 2013 May 18 0145 UTC IP Shock Passage Observed: 2013 May 18 0023 UTC #------------------------------------------------- Space Weather Message Code: WATA30 Serial Number: 105 Issue Time: 2013 May 17 2124 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: May 18: None (Below G1) May 19: G2 (Moderate) May 20: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude. Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms. Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible. Radio - HF (high frequency) radio propagation can fade at higher latitudes. Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state. #------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 854 Issue Time: 2013 May 17 0927 UTC ALERT: Type II Radio Emission Begin Time: 2013 May 17 0850 UTC Estimated Velocity: 376 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. #------------------------------------------------- Space Weather Message Code: ALTTP4 Serial Number: 416 Issue Time: 2013 May 17 0927 UTC ALERT: Type IV Radio Emission Begin Time: 2013 May 17 0850 UTC Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms. #------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 582 Issue Time: 2013 May 17 0926 UTC SUMMARY: 10cm Radio Burst Begin Time: 2013 May 17 0848 UTC Maximum Time: 2013 May 17 0857 UTC End Time: 2013 May 17 0912 UTC Duration: 24 minutes Peak Flux: 450 sfu Latest Penticton Noon Flux: 145 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. #------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 394 Issue Time: 2013 May 17 0825 UTC EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected Extension to Serial Number: 393 Valid From: 2013 May 15 1232 UTC Now Valid Until: 2013 May 18 2300 UTC Warning Condition: Persistence Predicted NOAA Scale: S1 - Minor Comment: 10 MeV Proton levels continue to persist at about 25 pfu. Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2080 Issue Time: 2013 May 16 2033 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 2079 Valid From: 2013 May 16 1605 UTC Now Valid Until: 2013 May 17 0300 UTC Warning Condition: Persistence Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 1637 Issue Time: 2013 May 16 1627 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2013 May 16 1623 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2079 Issue Time: 2013 May 16 1607 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2013 May 16 1605 UTC Valid To: 2013 May 16 2100 UTC Warning Condition: Onset Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 393 Issue Time: 2013 May 16 1131 UTC EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected Extension to Serial Number: 392 Valid From: 2013 May 15 1232 UTC Now Valid Until: 2013 May 17 1200 UTC Warning Condition: Persistence Predicted NOAA Scale: S1 - Minor Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. #------------------------------------------------- Space Weather Message Code: ALTK04 Serial Number: 1636 Issue Time: 2013 May 16 0401 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2013 May 16 0358 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: WARK04 Serial Number: 2078 Issue Time: 2013 May 16 0341 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2013 May 16 0345 UTC Valid To: 2013 May 16 0900 UTC Warning Condition: Onset Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Aurora - Aurora may be visible at high latitudes such as Canada and Alaska. #------------------------------------------------- Space Weather Message Code: ALTPX1 Serial Number: 300 Issue Time: 2013 May 15 1347 UTC ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu Begin Time: 2013 May 15 1335 UTC NOAA Scale: S1 - Minor Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. #------------------------------------------------- Space Weather Message Code: WARPX1 Serial Number: 392 Issue Time: 2013 May 15 1233 UTC WARNING: Proton 10MeV Integral Flux above 10pfu expected Valid From: 2013 May 15 1232 UTC Valid To: 2013 May 16 1200 UTC Warning Condition: Onset Predicted NOAA Scale: S1 - Minor Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies. #------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 853 Issue Time: 2013 May 15 0222 UTC ALERT: Type II Radio Emission Begin Time: 2013 May 15 0137 UTC Estimated Velocity: 501 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. #------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 86 Issue Time: 2013 May 15 0211 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2013 May 15 0125 UTC Maximum Time: 2013 May 15 0148 UTC End Time: 2013 May 15 0158 UTC X-ray Class: X1.2 Optical Class: 1b Location: N11E63 NOAA Scale: R3 - Strong Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. #------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 581 Issue Time: 2013 May 15 0203 UTC SUMMARY: 10cm Radio Burst Begin Time: 2013 May 15 0133 UTC Maximum Time: 2013 May 15 0143 UTC End Time: 2013 May 15 0150 UTC Duration: 17 minutes Peak Flux: 490 sfu Latest Penticton Noon Flux: 148 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. #------------------------------------------------- Space Weather Message Code: ALTTP4 Serial Number: 415 Issue Time: 2013 May 15 0202 UTC ALERT: Type IV Radio Emission Begin Time: 2013 May 15 0135 UTC Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms. #------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 190 Issue Time: 2013 May 15 0143 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2013 May 15 0141 UTC NOAA Scale: R2 - Moderate Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html. #------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 580 Issue Time: 2013 May 14 0249 UTC SUMMARY: 10cm Radio Burst Begin Time: 2013 May 14 0200 UTC Maximum Time: 2013 May 14 0203 UTC End Time: 2013 May 14 0210 UTC Duration: 10 minutes Peak Flux: 370 sfu Latest Penticton Noon Flux: 150 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. #------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 579 Issue Time: 2013 May 14 0210 UTC SUMMARY: 10cm Radio Burst Begin Time: 2013 May 14 0134 UTC Maximum Time: 2013 May 14 0141 UTC End Time: 2013 May 14 0143 UTC Duration: 9 minutes Peak Flux: 190 sfu Latest Penticton Noon Flux: 150 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. #------------------------------------------------- Space Weather Message Code: SUMX01 Serial Number: 85 Issue Time: 2013 May 14 0144 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2013 May 13 2359 UTC Maximum Time: 2013 May 14 0111 UTC End Time: 2013 May 14 0120 UTC X-ray Class: X3.2 Optical Class: 2b Location: N12E77 NOAA Scale: R3 - Strong Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Radio - Wide area blackout of HF (high frequency) radio communication for about an hour. #------------------------------------------------- Space Weather Message Code: ALTTP2 Serial Number: 852 Issue Time: 2013 May 14 0138 UTC ALERT: Type II Radio Emission Begin Time: 2013 May 14 0107 UTC Estimated Velocity: 1514 km/s Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. #------------------------------------------------- Space Weather Message Code: SUM10R Serial Number: 578 Issue Time: 2013 May 14 0137 UTC SUMMARY: 10cm Radio Burst Begin Time: 2013 May 14 0104 UTC Maximum Time: 2013 May 14 0115 UTC End Time: 2013 May 14 0120 UTC Duration: 16 minutes Peak Flux: 560 sfu Latest Penticton Noon Flux: 150 sfu Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications. #------------------------------------------------- Space Weather Message Code: ALTTP4 Serial Number: 414 Issue Time: 2013 May 14 0128 UTC ALERT: Type IV Radio Emission Begin Time: 2013 May 14 0113 UTC Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms. #------------------------------------------------- Space Weather Message Code: ALTXMF Serial Number: 189 Issue Time: 2013 May 14 0108 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2013 May 14 0105 UTC NOAA Scale: R2 - Moderate Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html. #-------------------------------------------------