Space Weather Message Code: WATA20 Serial Number: 773 Issue Time: 2017 Mar 04 2203 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Mar 05: G1 (Minor) Mar 06: None (Below G1) Mar 07: None (Below G1) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.

Space Weather Message Code: ALTK04 Serial Number: 1958 Issue Time: 2017 Mar 04 2159 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2017 Mar 04 2159 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3154 Issue Time: 2017 Mar 04 2146 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2017 Mar 04 2146 UTC Valid To: 2017 Mar 05 0300 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK05 Serial Number: 1072 Issue Time: 2017 Mar 04 0600 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 04 0559 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur.

Space Weather Message Code: ALTK05 Serial Number: 1071 Issue Time: 2017 Mar 04 0221 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 04 0220 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur.

Space Weather Message Code: WARK05 Serial Number: 1317 Issue Time: 2017 Mar 04 0214 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Mar 04 0215 UTC Valid To: 2017 Mar 04 1159 UTC Warning Condition: Onset NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power

Space Weather Message Code: WARK04 Serial Number: 3153 Issue Time: 2017 Mar 03 1441 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3152 Valid From: 2017 Mar 01 0131 UTC Now Valid Until: 2017 Mar 04 1200 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1070 Issue Time: 2017 Mar 03 0844 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2017 Mar 03 0844 UTC Synoptic Period: 0600-0900 UTC Active Warning: Yes NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur.

Space Weather Message Code: WARK05 Serial Number: 1315 Issue Time: 2017 Mar 03 0842 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2017 Mar 03 0841 UTC Valid To: 2017 Mar 03 1500 UTC Warning Condition: Onset NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power

Space Weather Message Code: WARK04 Serial Number: 3152 Issue Time: 2017 Mar 03 0555 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3151 Valid From: 2017 Mar 01 0131 UTC Now Valid Until: 2017 Mar 03 2359 UTC Warning Condition: Persistence NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents –