Space Weather Alerts, Watches and Warnings
Issue Time: 2019 Jul 21 2308 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Jul 21 2307 UTC
Valid To: 2019 Jul 22 0300 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 Jul 21 1546 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2959
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 1870 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 20 1158 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2958
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 1849 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 19 1141 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2957
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 1942 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 18 1219 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2956
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 1690 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 17 1411 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2955
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 2864 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 16 1316 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2954
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 2812 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 15 1340 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2953
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 4234 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 14 1106 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2952
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 4714 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 13 1046 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2951
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 6623 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 12 1041 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2950
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 5921 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 11 0941 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2949
Begin Time: 2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux: 8155 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 11 0828 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Jul 11 0830 UTC
Valid To: 2019 Jul 11 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 Jul 10 1239 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2019 Jul 10 1230 UTC
Station: GOES
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Issue Time: 2019 Jul 10 1132 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3642
Valid From: 2019 Jul 09 1830 UTC
Now Valid Until: 2019 Jul 10 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 Jul 10 0727 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2019 Jul 10 0726 UTC
Synoptic Period: 0600-0900 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 Jul 10 0522 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2019 Jul 10 0521 UTC
Valid To: 2019 Jul 10 1200 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 Jul 10 0254 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3641
Valid From: 2019 Jul 09 1830 UTC
Now Valid Until: 2019 Jul 10 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 Jul 09 2029 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2019 Jul 09 2028 UTC
Synoptic Period: 1800-2100 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 Jul 09 2020 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2019 Jul 09 2020 UTC
Valid To: 2019 Jul 09 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 Jul 09 2009 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Jul 09 2008 UTC
Synoptic Period: 1800-2100 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 Jul 09 1828 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Jul 09 1830 UTC
Valid To: 2019 Jul 10 0300 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 Jul 08 2349 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3639
Valid From: 2019 Jul 08 1953 UTC
Now Valid Until: 2019 Jul 09 0600 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 Jul 08 2340 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2019 Jul 08 2339 UTC
Valid To: 2019 Jul 09 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.

Issue Time: 2019 Jul 08 2118 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2019 Jul 08 2059 UTC
Synoptic Period: 1800-2100 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 Jul 08 1953 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Jul 08 1953 UTC
Valid To: 2019 Jul 08 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 Jul 08 0719 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2019 Jul 08 0603 UTC
Maximum Time: 2019 Jul 08 0603 UTC
End Time: 2019 Jul 08 0605 UTC
Duration: 2 minutes
Peak Flux: 75 sfu
Latest Penticton Noon Flux: 67 sfu

Comment: Reported by Learmonth. San Vito was experiencing RFI.
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.

Issue Time: 2019 Jul 01 0514 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2019 Jul 01 0511 UTC
Valid To: 2019 Jul 01 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.
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