Space Weather Message Code: WARK04 Serial Number: 3612 Issue Time: 2019 Apr 03 0400 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 03 0400 UTC Valid To: 2019 Apr 03 1200 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: ALTK04 Serial Number: 2106 Issue Time: 2019 Apr 01 1202 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Apr 01 1159 UTC Synoptic Period: 0900-1200 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: 3611 Issue Time: 2019 Apr 01 1105 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 01 1104 UTC Valid To: 2019 Apr 01 1800 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: ALTK04 Serial Number: 2105 Issue Time: 2019 Mar 31 0600 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Mar 31 0559 UTC Synoptic Period: 0300-0600 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: 3610 Issue Time: 2019 Mar 31 0329 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Mar 31 0330 UTC Valid To: 2019 Mar 31 1200 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: WARK04 Serial Number: 3609 Issue Time: 2019 Mar 28 0626 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Mar 28 0630 UTC Valid To: 2019 Mar 28 1500 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: WATA30 Serial Number: 178 Issue Time: 2019 Mar 21 0851 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: Mar 22: None (Below G1) Mar 23: G2 (Moderate) Mar 24: G1 (Minor) 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 55 degrees Geomagnetic Latitude. Induced

Space Weather Message Code: WATA30 Serial Number: 177 Issue Time: 2019 Mar 20 2151 UTC WATCH: Geomagnetic Storm Category G2 Predicted Highest Storm Level Predicted by Day: Mar 21: None (Below G1) Mar 22: None (Below G1) Mar 23: G2 (Moderate) 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 55 degrees Geomagnetic Latitude.

Space Weather Message Code: WARK04 Serial Number: 3608 Issue Time: 2019 Mar 17 1058 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3607 Valid From: 2019 Mar 16 2147 UTC Now Valid Until: 2019 Mar 17 2359 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 –

Space Weather Message Code: WARK04 Serial Number: 3607 Issue Time: 2019 Mar 17 0539 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 3606 Valid From: 2019 Mar 16 2147 UTC Now Valid Until: 2019 Mar 17 1200 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 –