Space Weather Alerts from SWPC

NOAA / Space Weather Prediction Center

	Space Weather Alerts
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Alerts Issued in August 2012

Space Weather Message Code: ALTTP4
Serial Number: 395
Issue Time: 2012 Aug 31 2102 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Aug 31 1947 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.

Space Weather Message Code: ALTTP2
Serial Number: 821
Issue Time: 2012 Aug 31 2101 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Aug 31 1947 UTC
Estimated Velocity: 515 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.

Space Weather Message Code: ALTEF3
Serial Number: 1953
Issue Time: 2012 Aug 31 1351 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1952
Begin Time: 2012 Aug 28 1535 UTC
Yesterday Maximum 2MeV Flux: 1129 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 1952
Issue Time: 2012 Aug 30 1307 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1951
Begin Time: 2012 Aug 28 1535 UTC
Yesterday Maximum 2MeV Flux: 1114 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 1951
Issue Time: 2012 Aug 29 1401 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1950
Begin Time: 2012 Aug 28 1535 UTC
Yesterday Maximum 2MeV Flux: 1021 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 1950
Issue Time: 2012 Aug 28 1550 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2012 Aug 28 1535 UTC
Station: GOES13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: WARK07
Serial Number: 39
Issue Time: 2012 Aug 27 1445 UTC

CANCEL WARNING: Geomagnetic K-index of 7 or greater expected
Cancel Serial Number: 38
Original Issue Time: 2012 Aug 27 1443 UTC

Comment: DISREGARD - SYSTEM TESTING ONLY
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Space Weather Message Code: WARK07
Serial Number: 38
Issue Time: 2012 Aug 27 1443 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2012 Aug 27 1443 UTC
Valid To: 2012 Aug 27 1500 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

Space Weather Message Code: WARK04
Serial Number: 1997
Issue Time: 2012 Aug 27 0855 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1996
Valid From: 2012 Aug 26 1158 UTC
Now Valid Until: 2012 Aug 27 1900 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.

Space Weather Message Code: WARK04
Serial Number: 1996
Issue Time: 2012 Aug 26 2358 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1995
Valid From: 2012 Aug 26 1158 UTC
Now Valid Until: 2012 Aug 27 0900 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.

Space Weather Message Code: WARK04
Serial Number: 1995
Issue Time: 2012 Aug 26 1752 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1994
Valid From: 2012 Aug 26 1158 UTC
Now Valid Until: 2012 Aug 27 0001 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.

Space Weather Message Code: ALTK04
Serial Number: 1606
Issue Time: 2012 Aug 26 1506 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Aug 26 1500 UTC
Synoptic Period: 1500-1800 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.

Space Weather Message Code: WARK04
Serial Number: 1994
Issue Time: 2012 Aug 26 1154 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 26 1158 UTC
Valid To: 2012 Aug 26 1800 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.

Space Weather Message Code: ALTEF3
Serial Number: 1949
Issue Time: 2012 Aug 24 1245 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1948
Begin Time: 2012 Aug 21 1255 UTC
Yesterday Maximum 2MeV Flux: 1476 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 1948
Issue Time: 2012 Aug 23 1506 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1947
Begin Time: 2012 Aug 21 1255 UTC
Yesterday Maximum 2MeV Flux: 3112 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 1947
Issue Time: 2012 Aug 22 1046 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1946
Begin Time: 2012 Aug 21 1255 UTC
Yesterday Maximum 2MeV Flux: 2293 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTEF3
Serial Number: 1946
Issue Time: 2012 Aug 21 1310 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2012 Aug 21 1255 UTC
Station: GOES-13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: WARK04
Serial Number: 1993
Issue Time: 2012 Aug 20 0554 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1992
Valid From: 2012 Aug 19 2223 UTC
Now Valid Until: 2012 Aug 20 1900 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.

Space Weather Message Code: ALTK04
Serial Number: 1605
Issue Time: 2012 Aug 20 0004 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Aug 19 2359 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.

Space Weather Message Code: WARK04
Serial Number: 1992
Issue Time: 2012 Aug 19 2223 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 19 2223 UTC
Valid To: 2012 Aug 20 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.

Space Weather Message Code: WARK04
Serial Number: 1991
Issue Time: 2012 Aug 19 1029 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 19 1030 UTC
Valid To: 2012 Aug 19 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.

Space Weather Message Code: ALTK04
Serial Number: 1604
Issue Time: 2012 Aug 18 2104 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Aug 18 2100 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.

Space Weather Message Code: WARK04
Serial Number: 1990
Issue Time: 2012 Aug 18 2056 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 18 2055 UTC
Valid To: 2012 Aug 19 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.

Space Weather Message Code: SUM10R
Serial Number: 566
Issue Time: 2012 Aug 18 0341 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Aug 18 0322 UTC
Maximum Time: 2012 Aug 18 0322 UTC
End Time: 2012 Aug 18 0322 UTC
Duration: 0 minutes
Peak Flux: 100 sfu
Latest Penticton Noon Flux: 95 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.

Space Weather Message Code: SUMXM5
Serial Number: 97
Issue Time: 2012 Aug 18 0115 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2012 Aug 18 0024 UTC
Maximum Time: 2012 Aug 18 0102 UTC
End Time: 2012 Aug 18 0107 UTC
X-ray Class: M5.5
Location: N20E90
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.

Space Weather Message Code: SUM10R
Serial Number: 565
Issue Time: 2012 Aug 18 0111 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Aug 18 0057 UTC
Maximum Time: 2012 Aug 18 0057 UTC
End Time: 2012 Aug 18 0058 UTC
Duration: 1 minutes
Peak Flux: 130 sfu
Latest Penticton Noon Flux: 95 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.

Space Weather Message Code: ALTXMF
Serial Number: 180
Issue Time: 2012 Aug 18 0103 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2012 Aug 17 0100 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/drap/index.html.

Space Weather Message Code: SUM10R
Serial Number: 564
Issue Time: 2012 Aug 17 1736 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Aug 17 1714 UTC
Maximum Time: 2012 Aug 17 1715 UTC
End Time: 2012 Aug 17 1717 UTC
Duration: 3 minutes
Peak Flux: 140 sfu
Latest Penticton Noon Flux: 98 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.

Space Weather Message Code: ALTK04
Serial Number: 1603
Issue Time: 2012 Aug 17 0128 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Aug 17 0129 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.

Space Weather Message Code: WARK04
Serial Number: 1989
Issue Time: 2012 Aug 17 0122 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 17 0125 UTC
Valid To: 2012 Aug 17 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.

Space Weather Message Code: WARK04
Serial Number: 1988
Issue Time: 2012 Aug 16 1700 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 16 1705 UTC
Valid To: 2012 Aug 17 0000 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.

Space Weather Message Code: ALTTP4
Serial Number: 394
Issue Time: 2012 Aug 16 1345 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Aug 16 1254 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.

Space Weather Message Code: ALTTP2
Serial Number: 820
Issue Time: 2012 Aug 16 1344 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Aug 16 1308 UTC
Estimated Velocity: 704 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.

Space Weather Message Code: ALTTP4
Serial Number: 393
Issue Time: 2012 Aug 13 2119 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Aug 13 1306 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.

Space Weather Message Code: ALTTP2
Serial Number: 819
Issue Time: 2012 Aug 13 1331 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Aug 13 1241 UTC
Estimated Velocity: 736 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.

Space Weather Message Code: ALTTP4
Serial Number: 392
Issue Time: 2012 Aug 13 0508 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Aug 13 0413 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.

Space Weather Message Code: ALTK04
Serial Number: 1602
Issue Time: 2012 Aug 08 0118 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Aug 08 0113 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.

Space Weather Message Code: WARK04
Serial Number: 1987
Issue Time: 2012 Aug 08 0046 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 08 0046 UTC
Valid To: 2012 Aug 08 0700 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.

Space Weather Message Code: ALTTP2
Serial Number: 818
Issue Time: 2012 Aug 06 0852 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Aug 06 0820 UTC
Estimated Velocity: 552 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.

Space Weather Message Code: ALTTP4
Serial Number: 391
Issue Time: 2012 Aug 06 0524 UTC

ALERT: Type IV Radio Emission
Begin Time: 2012 Aug 06 0438 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.

Space Weather Message Code: ALTTP2
Serial Number: 817
Issue Time: 2012 Aug 06 0519 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Aug 06 0439 UTC
Estimated Velocity: 523 km/s

Comment: Speed verified using Learmonth Type II tool based on the harmonic.
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.

Space Weather Message Code: ALTTP2
Serial Number: 816
Issue Time: 2012 Aug 03 0715 UTC

ALERT: Type II Radio Emission
Begin Time: 2012 Aug 03 0602 UTC
Estimated Velocity: 622 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.

Space Weather Message Code: WARK04
Serial Number: 1986
Issue Time: 2012 Aug 02 1755 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1985
Valid From: 2012 Aug 02 1432 UTC
Now Valid Until: 2012 Aug 02 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.

Space Weather Message Code: ALTK05
Serial Number: 697
Issue Time: 2012 Aug 02 1656 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2012 Aug 02 1643 UTC
Synoptic Period: 1500-1800 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.

Space Weather Message Code: WARK05
Serial Number: 795
Issue Time: 2012 Aug 02 1604 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2012 Aug 02 1603 UTC
Valid To: 2012 Aug 02 2100 UTC
Warning Condition: Persistence
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.

Space Weather Message Code: ALTK04
Serial Number: 1601
Issue Time: 2012 Aug 02 1438 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2012 Aug 02 1431 UTC
Synoptic Period: 1200-1500 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.

Space Weather Message Code: WARK04
Serial Number: 1985
Issue Time: 2012 Aug 02 1433 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2012 Aug 02 1432 UTC
Valid To: 2012 Aug 02 1800 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.

Space Weather Message Code: SUM10R
Serial Number: 563
Issue Time: 2012 Aug 01 1619 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2012 Aug 01 1538 UTC
Maximum Time: 2012 Aug 01 1538 UTC
End Time: 2012 Aug 01 1538 UTC
Duration: 1 minutes
Peak Flux: 140 sfu
Latest Penticton Noon Flux: 140 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.