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Alerts Issued in September 2013


Space Weather Message Code: WARPX1
Serial Number: 402
Issue Time: 2013 Sep 30 1958 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 401
Valid From: 2013 Sep 30 0500 UTC
Now Valid Until: 2013 Oct 01 2200 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WATA20
Serial Number: 551
Issue Time: 2013 Sep 30 1952 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Oct 01: None (Below G1) Oct 02: G1 (Minor) Oct 03: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: ALTPX2
Serial Number: 54
Issue Time: 2013 Sep 30 1435 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2013 Sep 30 1420 UTC
NOAA Scale: S2 - Moderate
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTPX1
Serial Number: 303
Issue Time: 2013 Sep 30 0525 UTC

ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2013 Sep 30 0505 UTC
NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WARPX1
Serial Number: 401
Issue Time: 2013 Sep 30 0446 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2013 Sep 30 0500 UTC
Valid To: 2013 Sep 30 2200 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTK04
Serial Number: 1673
Issue Time: 2013 Sep 24 1401 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Sep 24 1358 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: 2171
Issue Time: 2013 Sep 24 1314 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Sep 24 1313 UTC
Valid To: 2013 Sep 24 1900 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: 2090
Issue Time: 2013 Sep 23 1005 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2089
Begin Time: 2013 Sep 20 1220 UTC
Yesterday Maximum 2MeV Flux: 2906 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2089
Issue Time: 2013 Sep 22 0856 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2088
Begin Time: 2013 Sep 20 1220 UTC
Yesterday Maximum 2MeV Flux: 2810 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2088
Issue Time: 2013 Sep 21 1044 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2087
Begin Time: 2013 Sep 20 1220 UTC
Yesterday Maximum 2MeV Flux: 2939 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2087
Issue Time: 2013 Sep 20 1236 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2013 Sep 20 1220 UTC
Station: GOES13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTTP2
Serial Number: 867
Issue Time: 2013 Sep 19 2049 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Sep 19 1947 UTC
Estimated Velocity: 797 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: 2170
Issue Time: 2013 Sep 19 0526 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Sep 19 0530 UTC
Valid To: 2013 Sep 19 1300 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: 1672
Issue Time: 2013 Sep 13 1805 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Sep 13 1800 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: 2169
Issue Time: 2013 Sep 13 1732 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Sep 13 1732 UTC
Valid To: 2013 Sep 14 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: ALTEF3
Serial Number: 2086
Issue Time: 2013 Sep 10 1716 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2085
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 1054 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2085
Issue Time: 2013 Sep 09 1517 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2084
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 1041 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2084
Issue Time: 2013 Sep 08 1616 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2083
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 1006 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2083
Issue Time: 2013 Sep 07 1616 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2082
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 1315 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2082
Issue Time: 2013 Sep 06 1256 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2081
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 1157 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2081
Issue Time: 2013 Sep 05 1412 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2080
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 1231 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2080
Issue Time: 2013 Sep 04 1249 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2079
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 2445 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2079
Issue Time: 2013 Sep 03 1100 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2078
Begin Time: 2013 Sep 02 1315 UTC
Yesterday Maximum 2MeV Flux: 3161 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2078
Issue Time: 2013 Sep 02 1334 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2013 Sep 02 1315 UTC
Station: GOES13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 2168
Issue Time: 2013 Sep 02 0708 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Sep 02 0707 UTC
Valid To: 2013 Sep 02 1300 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.