Space Weather Alerts, Watches and Warnings
Issue Time: 2019 Feb 14 1807 UTC | ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2019 Feb 14 1755 UTC Station: GOES15
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 14 0541 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 14 0541 UTC Valid To: 2019 Feb 14 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. | | |
Issue Time: 2019 Feb 13 1201 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Feb 13 1159 UTC Synoptic Period: 0900-1200 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 Feb 13 1031 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 13 1030 UTC Valid To: 2019 Feb 13 1500 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 Feb 11 1608 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 11 1608 UTC Valid To: 2019 Feb 11 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. | | |
Issue Time: 2019 Feb 11 1255 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2908 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 2669 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 10 1200 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2907 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 3085 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 10 0556 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3593 Valid From: 2019 Feb 09 2035 UTC Now Valid Until: 2019 Feb 10 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. | | |
Issue Time: 2019 Feb 09 2036 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 09 2035 UTC Valid To: 2019 Feb 10 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 Feb 09 1646 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2906 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 3798 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 08 2209 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Feb 08 2209 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 Feb 08 2203 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 08 2205 UTC Valid To: 2019 Feb 09 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. | | |
Issue Time: 2019 Feb 08 1547 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2905 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 3631 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 07 0958 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2904 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 2249 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 06 1150 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2903 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 2973 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 05 1433 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2902 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 8975 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 04 0900 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2901 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 13891 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 03 0859 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2900 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 11373 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 03 0300 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Feb 03 0259 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. | | |
Issue Time: 2019 Feb 03 0247 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 03 0247 UTC Valid To: 2019 Feb 03 1500 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 Feb 02 1803 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Feb 02 1759 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. | | |
Issue Time: 2019 Feb 02 1629 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Feb 02 1635 UTC Valid To: 2019 Feb 02 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. | | |
Issue Time: 2019 Feb 02 1424 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2899 Begin Time: 2019 Feb 01 2230 UTC Yesterday Maximum 2MeV Flux: 2237 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 01 2234 UTC | ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2019 Feb 01 2230 UTC Station: GOES-15
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Feb 01 2220 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3588 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 02 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. | | |
Issue Time: 2019 Feb 01 1456 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3587 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 01 2359 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 Feb 01 0854 UTC | EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1511 Valid From: 2019 Jan 31 2201 UTC Now Valid Until: 2019 Feb 01 1500 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. | | |
Issue Time: 2019 Feb 01 0256 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3586 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 01 1500 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 Feb 01 0251 UTC | EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1510 Valid From: 2019 Jan 31 2201 UTC Now Valid Until: 2019 Feb 01 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. | | |
Issue Time: 2019 Jan 31 2246 UTC | WARNING: Geomagnetic K-Index of 6 expected Valid From: 2019 Jan 31 2247 UTC Valid To: 2019 Feb 01 0300 UTC Warning Condition: Onset NOAA Scale: G2 - Moderate
| 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. | | |
Issue Time: 2019 Jan 31 2219 UTC | ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Jan 31 2219 UTC Synoptic Period: 2100-2400 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. | | |
Issue Time: 2019 Jan 31 2200 UTC | WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Jan 31 2201 UTC Valid To: 2019 Feb 01 0300 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. | | |
Issue Time: 2019 Jan 31 2156 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Jan 31 2149 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 Jan 31 2029 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3585 Valid From: 2019 Jan 31 1318 UTC Now Valid Until: 2019 Feb 01 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. | | |
Issue Time: 2019 Jan 31 1346 UTC | WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Jan 31 1347 UTC Valid To: 2019 Jan 31 1800 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. | | |
Issue Time: 2019 Jan 31 1317 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jan 31 1318 UTC Valid To: 2019 Jan 31 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. | | |
Issue Time: 2019 Jan 30 1626 UTC | ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2019 Jan 30 1627 UTC Station: GOES
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Jan 30 1617 UTC | WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day: Jan 31: G1 (Minor) Feb 01: G1 (Minor) Feb 02: None (Below G1)
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 Jan 29 1943 UTC | WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day: Jan 30: None (Below G1) Jan 31: None (Below G1) Feb 01: 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 Jan 28 1413 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2896 Begin Time: 2019 Jan 25 1730 UTC Yesterday Maximum 2MeV Flux: 1368 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Jan 27 1316 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2895 Begin Time: 2019 Jan 25 1730 UTC Yesterday Maximum 2MeV Flux: 2053 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Jan 26 1456 UTC | CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2894 Begin Time: 2019 Jan 25 1730 UTC Yesterday Maximum 2MeV Flux: 1408 pfu
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Jan 25 1741 UTC | ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2019 Jan 25 1730 UTC Station: GOES15
| Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems. | | |
Issue Time: 2019 Jan 25 1158 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3583 Valid From: 2019 Jan 23 2325 UTC Now Valid Until: 2019 Jan 25 1800 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 Jan 25 0003 UTC | ALERT: Geomagnetic K-index of 5 Threshold Reached: 2019 Jan 24 2359 UTC Synoptic Period: 2100-2400 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. | | |
Issue Time: 2019 Jan 24 2247 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3582 Valid From: 2019 Jan 23 2325 UTC Now Valid Until: 2019 Jan 25 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. | | |
Issue Time: 2019 Jan 24 2141 UTC | WARNING: Geomagnetic K-index of 5 expected Valid From: 2019 Jan 24 2145 UTC Valid To: 2019 Jan 24 2359 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. | | |
Issue Time: 2019 Jan 24 0821 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3581 Valid From: 2019 Jan 23 2325 UTC Now Valid Until: 2019 Jan 24 2359 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 Jan 23 2335 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Jan 23 2335 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 Jan 23 2325 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Jan 23 2325 UTC Valid To: 2019 Jan 24 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. | | |
Issue Time: 2019 Jan 21 1956 UTC | WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day: Jan 22: None (Below G1) Jan 23: None (Below G1) Jan 24: 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. | | |
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