ALERT: Geomagnetic K-index of 6 (G2)

Space Weather Message Code: ALTK06 Serial Number: 428 Issue Time: 2017 Apr 22 0559 UTC
ALERT: Geomagnetic K-index of 6 Threshold Reached: 2017 Apr 22 0559 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G2 – Moderate
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 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. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

WARNING: Geomagnetic K-index of 6 (G2)

Space Weather Message Code: WARK06 Serial Number: 379 Issue Time: 2017 Apr 22 0249 UTC
WARNING: Geomagnetic K-Index of 6 expected Valid From: 2017 Apr 22 0245 UTC Valid To: 2017 Apr 22 0600 UTC Warning Condition: Onset NOAA Scale: G2 – Moderate
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 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. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

CANCELLED WARNING: Geomagnetic K-index of 6 (G2)

Space Weather Message Code: WARK06 Serial Number: 378 Issue Time: 2017 Apr 20 1138 UTC
CANCEL WARNING: Geomagnetic K-Index of 6 expected Cancel Serial Number: 377 Original Issue Time: 2017 Apr 20 0345 UTC
Comment: Conditions are no longer favorable for G2-Moderate storm levels
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 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. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

ALERT: Geomagnetic K-index of 6 (G2)

Space Weather Message Code: ALTK06 Serial Number: 427 Issue Time: 2017 Apr 20 0434 UTC
ALERT: Geomagnetic K-index of 6 Threshold Reached: 2017 Apr 20 0433 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Scale: G2 – Moderate
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 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. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

WARNING: Geomagnetic K-index of 6 (G2)

Space Weather Message Code: WARK06 Serial Number: 377 Issue Time: 2017 Apr 20 0347 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 376 Valid From: 2017 Apr 20 0345 UTC Now Valid Until: 2017 Apr 20 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 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. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

WARNING: Geomagnetic K-index of 6 (G2)

Space Weather Message Code: WARK06 Serial Number: 376 Issue Time: 2017 Apr 20 0345 UTC
WARNING: Geomagnetic K-Index of 6 expected Valid From: 2017 Apr 20 0345 UTC Valid To: 2017 Apr 20 0900 UTC Warning Condition: Onset NOAA Scale: G2 – Moderate
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 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. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

Space Weather Outlook

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA
SPACE WEATHER ADVISORY OUTLOOK #17-16 2017 April 16 at 8:13 p.m. MDT (2017 April 17 0213 UTC)
**** SPACE WEATHER OUTLOOK ****
Summary For April 10-16
No space weather storms were observed during the summary period.
Outlook For April 17-23
G2 (Moderate) geomagnetic storms are likely on 23 Apr and G1 (Minor) storms are likely on 17 Apr due to the influence of recurrent coronal hole high speed streams.
No solar radiation storms or radio blackouts are expected during the outlook period.
Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC’s Web site swpc.noaa.gov Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

Space Weather Outlook

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA
SPACE WEATHER ADVISORY OUTLOOK #17-15 2017 April 9 at 8:52 p.m. MDT (2017 April 10 0252 UTC)
**** SPACE WEATHER OUTLOOK ****
Summary For April 3-9
G1 (Minor) geomagnetic storm levels were observed on 04 and 09 April due to negative polarity coronal hole influence.
R1-R2 (Minor-Moderate) radio blackouts were observed on 03 April due to M-class flare activity from Region 2644.
Outlook For April 10-16
No space weather storms are expected.
Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More information is available at SWPC’s Web site swpc.noaa.gov Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

SUMMARY: X-Ray Event exceeded M5 (R2)

Space Weather Message Code: SUMXM5 Serial Number: 149 Issue Time: 2017 Apr 03 1447 UTC
SUMMARY: X-ray Event exceeded M5 Begin Time: 2017 Apr 03 1419 UTC Maximum Time: 2017 Apr 03 1429 UTC End Time: 2017 Apr 03 1434 UTC X-ray Class: M5.8 Location: N12W71 NOAA Scale: R2 – Moderate
NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth. Radio – Limited blackout of HF (high frequency) radio communication for tens of minutes. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.

ALERT: X-ray Flux exceeded M5 (R2)

Space Weather Message Code: ALTXMF Serial Number: 266 Issue Time: 2017 Apr 03 1433 UTC
ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2017 Apr 03 1429 UTC NOAA Scale: R2 – Moderate
NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap. Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to: pss.swpc.noaa.gov. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact us: pss.help@noaa.gov.