Latest Alerts
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P11WP11W
Space Weather Message Code: WARPX1
Serial Number: 588
Issue Time: 2024 Nov 01 1727 UTC
CANCEL WARNING: Proton 10MeV Integral Flux above 10pfu expected
Cancel Serial Number: 587
Original Issue Time: 2024 Oct 31 0008 UTC
Comment: The greater than 10 MeV proton flux has decreased below 10 pfu and is no longer expected to reach event levels.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
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P11SP11S
Space Weather Message Code: SUMPX1
Serial Number: 118
Issue Time: 2024 Nov 01 1727 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024 Oct 26 1910 UTC
Maximum Time: 2024 Oct 28 1350 UTC
End Time: 2024 Nov 01 0735 UTC
Maximum 10MeV Flux: 364 pfu
NOAA Scale: S2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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ALERT: Type IV Radio Emission TIVA
Space Weather Message Code: ALTTP4
Serial Number: 671
Issue Time: 2024 Nov 01 1124 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Nov 01 1034 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
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ALERT: Geomagnetic K-index of 4 K04A
Space Weather Message Code: ALTK04
Serial Number: 2496
Issue Time: 2024 Nov 01 0006 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 31 2359 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 visible at high latitudes such as Canada and Alaska.
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P11WP11W
Space Weather Message Code: WARPX1
Serial Number: 587
Issue Time: 2024 Oct 31 2354 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 586
Valid From: 2024 Oct 31 0000 UTC
Now Valid Until: 2024 Nov 01 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
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BHISBHIS
Space Weather Message Code: SUM10R
Serial Number: 846
Issue Time: 2024 Oct 31 2212 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Oct 31 2110 UTC
Maximum Time: 2024 Oct 31 2111 UTC
End Time: 2024 Oct 31 2124 UTC
Duration: 14 minutes
Peak Flux: 910 sfu
Latest Penticton Noon Flux: 270 sfu
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.
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WARNING: Geomagnetic K-index of 4 expected K04W
Space Weather Message Code: WARK04
Serial Number: 4743
Issue Time: 2024 Oct 31 2201 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 31 2200 UTC
Valid To: 2024 Nov 01 0900 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 - Aurora may be visible at high latitudes such as Canada and Alaska.
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XX0SXX0S
Space Weather Message Code: SUMX01
Serial Number: 180
Issue Time: 2024 Oct 31 2138 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Oct 31 2112 UTC
Maximum Time: 2024 Oct 31 2120 UTC
End Time: 2024 Oct 31 2127 UTC
X-ray Class: X2.0
Optical Class: 3b
Location: N15E28
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
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ALERT: X-Ray Flux exceeded M5 XM5A
Space Weather Message Code: ALTXMF
Serial Number: 447
Issue Time: 2024 Oct 31 2116 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 31 2115 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 http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.