Space Weather Alerts, Watches and Warnings
Issue Time: 2023 Feb 07 1458 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4262 Valid From: 2023 Feb 06 1925 UTC Now Valid Until: 2023 Feb 07 2100 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: 2023 Feb 07 0257 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4261 Valid From: 2023 Feb 06 1925 UTC Now Valid Until: 2023 Feb 07 1500 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: 2023 Feb 06 2101 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2023 Feb 06 2058 UTC Synoptic Period: 2100-2400 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: 2023 Feb 06 1924 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Feb 06 1925 UTC Valid To: 2023 Feb 07 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: 2023 Feb 06 0855 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4259 Valid From: 2023 Feb 06 0220 UTC Now Valid Until: 2023 Feb 06 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: 2023 Feb 06 0248 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2023 Feb 06 0248 UTC Synoptic Period: 0000-0300 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: 2023 Feb 06 0222 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Feb 06 0220 UTC Valid To: 2023 Feb 06 0900 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: 2023 Feb 03 1707 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Feb 03 1706 UTC Valid To: 2023 Feb 04 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: 2023 Feb 02 0301 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2023 Feb 02 0259 UTC Synoptic Period: 0000-0300 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: 2023 Feb 02 0123 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Feb 02 0122 UTC Valid To: 2023 Feb 02 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. | | |
Issue Time: 2023 Feb 01 1903 UTC | SUMMARY: Geomagnetic Sudden Impulse Observed: 2023 Feb 01 1854 UTC Deviation: 10 nT Station: CNB
| 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: 2023 Jan 31 0822 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 31 0822 UTC Valid To: 2023 Jan 31 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. | | |
Issue Time: 2023 Jan 26 1839 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 26 1840 UTC Valid To: 2023 Jan 27 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: 2023 Jan 26 0326 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 26 0247 UTC Estimated Velocity: 317 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 24 0441 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 24 0324 UTC Estimated Velocity: 368 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 22 2049 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 22 2048 UTC Valid To: 2023 Jan 23 0900 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: 2023 Jan 21 1931 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 21 1930 UTC Valid To: 2023 Jan 22 0900 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: 2023 Jan 21 0601 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2023 Jan 21 0559 UTC Synoptic Period: 0300-0600 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: 2023 Jan 21 0601 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 21 0559 UTC Valid To: 2023 Jan 21 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: 2023 Jan 18 1759 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4249 Valid From: 2023 Jan 17 2328 UTC Now Valid Until: 2023 Jan 18 2359 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: 2023 Jan 18 1455 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4248 Valid From: 2023 Jan 17 2328 UTC Now Valid Until: 2023 Jan 18 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: 2023 Jan 18 0754 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4247 Valid From: 2023 Jan 17 2328 UTC Now Valid Until: 2023 Jan 18 1500 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: 2023 Jan 18 0416 UTC | WARNING: Geomagnetic K-index of 5 expected Valid From: 2023 Jan 18 0415 UTC Valid To: 2023 Jan 18 0900 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: 2023 Jan 17 2331 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2023 Jan 17 2330 UTC Synoptic Period: 2100-2400 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: 2023 Jan 17 2329 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 17 2328 UTC Valid To: 2023 Jan 18 0900 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: 2023 Jan 16 1142 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4245 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 16 2100 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: 2023 Jan 15 2306 UTC | ALERT: Geomagnetic K-index of 5 Threshold Reached: 2023 Jan 15 2306 UTC Synoptic Period: 2100-2400 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: 2023 Jan 15 2259 UTC | WARNING: Geomagnetic K-index of 5 expected Valid From: 2023 Jan 15 2300 UTC Valid To: 2023 Jan 16 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: 2023 Jan 15 2259 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4244 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 16 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: 2023 Jan 15 1756 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4243 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 16 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: 2023 Jan 15 1014 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4242 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 15 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: 2023 Jan 15 1007 UTC | SUMMARY: X-ray Event exceeded M5 Begin Time: 2023 Jan 15 0308 UTC Maximum Time: 2023 Jan 15 0342 UTC End Time: 2023 Jan 15 0408 UTC X-ray Class: M6.0 Optical Class: sf Location: N12E54 NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 15 0855 UTC | EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1733 Valid From: 2023 Jan 15 0255 UTC Now Valid Until: 2023 Jan 15 1800 UTC Warning Condition: Persistence
| 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: 2023 Jan 15 0351 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 14 2314 UTC Estimated Velocity: 212 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 15 0349 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 15 0137 UTC Estimated Velocity: 337 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 15 0349 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 15 0310 UTC Estimated Velocity: 223 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 15 0334 UTC | ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2023 Jan 15 0332 UTC NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 15 0257 UTC | ALERT: Geomagnetic K-index of 5 Threshold Reached: 2023 Jan 15 0257 UTC Synoptic Period: 0000-0300 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: 2023 Jan 15 0254 UTC | WARNING: Geomagnetic K-index of 5 expected Valid From: 2023 Jan 15 0255 UTC Valid To: 2023 Jan 15 0900 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: 2023 Jan 15 0254 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4241 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 15 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: 2023 Jan 14 2058 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4240 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 15 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: 2023 Jan 14 1332 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 14 1246 UTC Estimated Velocity: 398 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 14 0527 UTC | EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4239 Valid From: 2023 Jan 13 1936 UTC Now Valid Until: 2023 Jan 14 2100 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: 2023 Jan 13 2226 UTC | ALERT: Geomagnetic K-index of 4 Threshold Reached: 2023 Jan 13 2220 UTC Synoptic Period: 2100-2400 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: 2023 Jan 13 1936 UTC | WARNING: Geomagnetic K-index of 4 expected Valid From: 2023 Jan 13 1936 UTC Valid To: 2023 Jan 14 0600 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: 2023 Jan 13 1459 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 13 1410 UTC Estimated Velocity: 401 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 13 1056 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 13 1020 UTC Estimated Velocity: 381 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 11 2129 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 11 2057 UTC Estimated Velocity: 899 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 11 0429 UTC | ALERT: Type IV Radio Emission Begin Time: 2023 Jan 11 0336 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. | | |
Issue Time: 2023 Jan 11 0239 UTC | SUMMARY: X-ray Event exceeded M5 Begin Time: 2023 Jan 11 0149 UTC Maximum Time: 2023 Jan 11 0156 UTC End Time: 2023 Jan 11 0201 UTC X-ray Class: M5.6 Optical Class: 1b Location: S13E53 NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 11 0237 UTC | CANCEL SUMMARY: X-ray Event exceeded M5 Cancel Serial Number: 167 Original Issue Time: 2023 Jan 11 0205 UTC | Comment: Issued with incorrect source location. Issuing new summary with correct information.
| 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. | | |
Issue Time: 2023 Jan 11 0236 UTC | ALERT: Type II Radio Emission Begin Time: 2023 Jan 11 0153 UTC Estimated Velocity: 628 km\/s
| Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event. | | |
Issue Time: 2023 Jan 11 0211 UTC | SUMMARY: 10cm Radio Burst Begin Time: 2023 Jan 11 0153 UTC Maximum Time: 2023 Jan 11 0153 UTC End Time: 2023 Jan 11 0154 UTC Duration: 1 minutes Peak Flux: 290 sfu Latest Penticton Noon Flux: 193 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. | | |
Issue Time: 2023 Jan 11 0205 UTC | SUMMARY: X-ray Event exceeded M5 Begin Time: 2023 Jan 11 0149 UTC Maximum Time: 2023 Jan 11 0156 UTC End Time: 2023 Jan 11 0201 UTC X-ray Class: M5.6 Optical Class: sf Location: N25E65 NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 11 0157 UTC | ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2023 Jan 11 0155 UTC NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 11 0125 UTC | ALERT: Type IV Radio Emission Begin Time: 2023 Jan 11 0059 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. | | |
Issue Time: 2023 Jan 10 2307 UTC | SUMMARY: 10cm Radio Burst Begin Time: 2023 Jan 10 2246 UTC Maximum Time: 2023 Jan 10 2246 UTC End Time: 2023 Jan 10 2247 UTC Duration: 1 minutes Peak Flux: 320 sfu Latest Penticton Noon Flux: 193 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. | | |
Issue Time: 2023 Jan 10 2306 UTC | SUMMARY: X-ray Event exceeded M5 Begin Time: 2023 Jan 10 2239 UTC Maximum Time: 2023 Jan 10 2247 UTC End Time: 2023 Jan 10 2251 UTC X-ray Class: X1 Optical Class: 2b Location: N25E65 NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 10 2300 UTC | SUMMARY: X-ray Event exceeded X1 Begin Time: 2023 Jan 10 2239 UTC Maximum Time: 2023 Jan 10 2247 UTC End Time: 2023 Jan 10 2252 UTC X-ray Class: X1 Optical Class: 2b Location: N25E65 NOAA Scale: R3 - Strong
| 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. | | |
Issue Time: 2023 Jan 10 2249 UTC | ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2023 Jan 10 2246 UTC NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 10 0040 UTC | ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2023 Jan 10 0016 UTC NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 10 0040 UTC | SUMMARY: X-ray Event exceeded M5 Begin Time: 2023 Jan 10 0009 UTC Maximum Time: 2023 Jan 10 0016 UTC End Time: 2023 Jan 10 0022 UTC X-ray Class: M5.1 Location: N26E93 NOAA Scale: R2 - Moderate
| 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. | | |
Issue Time: 2023 Jan 09 1917 UTC | SUMMARY: X-ray Event exceeded X1 Begin Time: 2023 Jan 09 1837 UTC Maximum Time: 2023 Jan 09 1850 UTC End Time: 2023 Jan 09 1857 UTC X-ray Class: X1.9 Optical Class: 2b Location: S14E70 NOAA Scale: R3 - Strong
| 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. | | |
Issue Time: 2023 Jan 09 1909 UTC | SUMMARY: 10cm Radio Burst Begin Time: 2023 Jan 09 1846 UTC Maximum Time: 2023 Jan 09 1846 UTC End Time: 2023 Jan 09 1850 UTC Duration: 4 minutes Peak Flux: 229 sfu Latest Penticton Noon Flux: 184 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. | | |
Issue Time: 2023 Jan 09 1850 UTC | ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2023 Jan 09 1847 UTC NOAA Scale: R2 - Moderate
| 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. | | |
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