Space Weather Alerts, Watches and Warnings
Issue Time: 2019 Nov 28 1505 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3015 Begin Time: 2019 Nov 24 1515 UTC Yesterday Maximum 2MeV Flux: 1758 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Nov 27 1216 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3014 Begin Time: 2019 Nov 24 1515 UTC Yesterday Maximum 2MeV Flux: 2713 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Nov 26 1206 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3013 Begin Time: 2019 Nov 24 1515 UTC Yesterday Maximum 2MeV Flux: 2203 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Nov 25 1241 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3012 Begin Time: 2019 Nov 24 1515 UTC Yesterday Maximum 2MeV Flux: 1920 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Nov 24 1529 UTC | ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2019 Nov 24 1515 UTC Station: GOES14
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Nov 23 1358 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Nov 23 1400 UTC Valid To: 2019 Nov 23 1800 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. | | |
Issue Time: 2019 Nov 22 0515 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3692 Valid From: 2019 Nov 21 1758 UTC Now Valid Until: 2019 Nov 22 2100 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. | | |
Issue Time: 2019 Nov 21 2247 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Nov 21 2244 UTC Synoptic Period: 2100-2400 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. | | |
Issue Time: 2019 Nov 21 2246 UTC | CANCEL ALERT: Geomagnetic K-index of 4 Cancel Serial Number: 2136 Original Issue Time: 2019 Nov 21 2244 UTC | Comment: Issued using local time. Will re-issue with UTC.
| 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. | | |
Issue Time: 2019 Nov 21 2244 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Nov 21 1544 UTC Synoptic Period: 2100-2400 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. | | |
Issue Time: 2019 Nov 21 1758 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Nov 21 1758 UTC Valid To: 2019 Nov 22 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. | | |
Issue Time: 2019 Nov 18 2112 UTC | WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day: Nov 19: None (Below G1) Nov 20: None (Below G1) Nov 21: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
| 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. | | |
Issue Time: 2019 Nov 11 0959 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Nov 11 1000 UTC Valid To: 2019 Nov 11 2359 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. | | |
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