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Inserito il - 05/09/2017 : 20:01:07
#---------
:Product: SWPC Space Weather Alerts ALTS.txt
:Issued: 2017 Sep 06 1348 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# See http://swpc.noaa.gov/alerts/ for description and other displays
# Send comments and suggestions to SWPC.Webmaster@noaa.gov
#
# SWPC Space Weather Alerts Issued in the last 24 hours
#---------------------------------------------------------------------
Space Weather Message Code: WARPC0
Serial Number: 81
Issue Time: 2017 Sep 06 1302 UTC
WARNING: Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2017 Sep 06 1305 UTC
Valid To: 2017 Sep 06 2359 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.
#-------------------------------------------------
Space Weather Message Code: SUMX01
Serial Number: 115
Issue Time: 2017 Sep 06 1245 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2017 Sep 06 1153 UTC
Maximum Time: 2017 Sep 06 1202 UTC
End Time: 2017 Sep 06 1210 UTC
X-ray Class: X9.3
NOAA Scale: R3 - Strong
Comment: Source was Region 2673
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.
#-------------------------------------------------
Space Weather Message Code: ALTTP2
Serial Number: 1058
Issue Time: 2017 Sep 06 1212 UTC
ALERT: Type II Radio Emission
Begin Time: 2017 Sep 06 1202 UTC
Estimated Velocity: 1969 km/s
www.swpc.noaa.gov/noaa-scales-explanation
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: 540
Issue Time: 2017 Sep 06 1210 UTC
ALERT: Type IV Radio Emission
Begin Time: 2017 Sep 06 1201 UTC
www.swpc.noaa.gov/noaa-scales-explanation
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: SUM10R
Serial Number: 697
Issue Time: 2017 Sep 06 1209 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2017 Sep 06 1154 UTC
Maximum Time: 2017 Sep 06 1156 UTC
End Time: 2017 Sep 06 1157 UTC
Duration: 3 minutes
Peak Flux: 12000 sfu
Latest Penticton Noon Flux: 121 sfu
www.swpc.noaa.gov/noaa-scales-explanation
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: 269
Issue Time: 2017 Sep 06 1200 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2017 Sep 06 1156 UTC
NOAA Scale: R2 - Moderate
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.
#-------------------------------------------------
Space Weather Message Code: SUMX01
Serial Number: 114
Issue Time: 2017 Sep 06 1008 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2017 Sep 06 0848 UTC
Maximum Time: 2017 Sep 06 0910 UTC
End Time: 2017 Sep 06 0959 UTC
X-ray Class: X2.2
Optical Class: 2b
Location: S08W33
NOAA Scale: R3 - Strong
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.
#-------------------------------------------------
Space Weather Message Code: SUM10R
Serial Number: 696
Issue Time: 2017 Sep 06 0934 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2017 Sep 06 0903 UTC
Maximum Time: 2017 Sep 06 0904 UTC
End Time: 2017 Sep 06 0909 UTC
Duration: 6 minutes
Peak Flux: 459 sfu
Latest Penticton Noon Flux: 121 sfu
www.swpc.noaa.gov/noaa-scales-explanation
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: 268
Issue Time: 2017 Sep 06 0912 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2017 Sep 06 0904 UTC
NOAA Scale: R2 - Moderate
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.
#-------------------------------------------------
Space Weather Message Code: SUMPX2
Serial Number: 40
Issue Time: 2017 Sep 06 0620 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2017 Sep 05 0715 UTC
Maximum Time: 2017 Sep 05 1930 UTC
End Time: 2017 Sep 05 2350 UTC
Maximum 10MeV Flux: 210 pfu
NOAA Scale: S2 - Moderate
Comment: Greater than 10MeV @ 10pfu (S1-Minor) event remains in effect.
www.swpc.noaa.gov/noaa-scales-explanation
#-------------------------------------------------
Space Weather Message Code: ALTEF3
Serial Number: 2655
Issue Time: 2017 Sep 06 0501 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2654
Begin Time: 2017 Sep 01 1350 UTC
Yesterday Maximum 2MeV Flux: 3777 pfu
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
#-------------------------------------------------
Space Weather Message Code: WARPX1
Serial Number: 464
Issue Time: 2017 Sep 05 2139 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 463
Valid From: 2017 Sep 05 0030 UTC
Now Valid Until: 2017 Sep 07 0400 UTC
Warning Condition: persistence
Predicted NOAA Scale: S2 - Moderate
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.
#-------------------------------------------------
Space Weather Message Code: WATA50
Serial Number: 62
Issue Time: 2017 Sep 05 1714 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Sep 06: G3 (Strong) Sep 07: G3 (Strong) Sep 08: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: WATA50
Serial Number: 62
Issue Time: 2017 Sep 05 1714 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Sep 06: G3 (Strong) Sep 07: G3 (Strong) Sep 08: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: WATA30
Serial Number: 163
Issue Time: 2017 Sep 05 1313 UTC
Geomagnetic Activity Probabilities 05 Sep-07 Sep
A. Middle Latitudes
Active 20/15/15
Minor Storm 05/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 20/15/15
Major-severe storm 20/05/10
:Product: Solar Region Summary
:Issued: 2017 Sep 05 0030 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
#
Joint USAF/NOAA Solar Region Summary
SRS Number 248 Issued at 0030Z on 05 Sep 2017
Report compiled from data received at SWO on 04 Sep
I. Regions with Sunspots. Locations Valid at 04/2400Z
Nmbr Location Lo Area Z LL NN Mag Type
2673 S08W16 119 0680 Dkc 07 28 Beta-Gamma-Delta
2674 N14W01 104 0740 Fhi 18 34 Beta
2675 S02W76 179 0010 Bxo 05 04 Beta
2676 S09W65 168 0030 Cro 08 04 Beta
2677 N19E51 052 0010 Axx 01 02 Alpha
IA. H-alpha Plages without Spots. Locations Valid at 04/2400Z Sep
Nmbr Location Lo
None
II. Regions Due to Return 05 Sep to 07 Sep
Nmbr Lat Lo
None
:Product: Solar and Geophysical Activity Summary
:Issued: 2017 Sep 05 0245 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
#
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 248 Issued at 0245Z on 05 Sep 2017
This report is compiled from data received at SWO on 04 Sep
A. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep
0042 0042 0042 140
0111 0111 0111 1000
0212 0213 0213 410
0218 0222 0229 2674 C1.1 1500
0536 0549 0605 2673 S10W04 M1.2 1f
0953 0953 0953 210
1156 1156 1156 1600
1511 1530 1533 2673 S06W13 M1.5 1n 130 100
1720 1720 1720 330
1756 1756 1756 100
1802 1803 1803 100
1805 1822 1831 2673 M1.0
1846 1937 1952 2673 M1.7 IV
1900 1900 1900 120
1959 2002 2006 2673 M1.5
2011 2050 2119 720 2100
2027 2050 2119 1600 II
2028 2033 2037 2673 S11W16 M5.5 3b
2203 2203 2203 800
2210 2214 2219 2673 M2.1
B. Proton Events: The greater than 10 MeV proton flux values
observed a slight enhancement that was likely
associated with the
M5 flare from Region 2673, but remained below alert thresholds.
C. Geomagnetic Activity Summary: The geomagnetic field was at quiet
to unsettled levels with an isolated active periods, likely
associated with sustained -Bz.
D. Stratwarm: Not Available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 183 SSN 122 Afr/Ap 016/017 X-ray Background C1.6
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 8.9e+07 GT 10 MeV 2.5e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 4.50e+08 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 4 4 2 2 2 3 4 4 Planetary 4 3 2 2 2 2 4 4
F. Comments: None
Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on day one (05 Sep) and quiet levels
on days two and three (06 Sep, 07 Sep). Protons have a slight chance of
crossing threshold on days one, two, and three (05 Sep, 06 Sep, 07 Sep).
III. Event probabilities 05 Sep-07 Sep
Class M 71/71/71
Class X 25/25/25
Proton 10/10/10
PCAF green
:Product: SWPC Space Weather Alerts ALTS.txt
:Issued: 2017 Sep 05 1748 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# See http://swpc.noaa.gov/alerts/ for description and other displays
# Send comments and suggestions to SWPC.Webmaster@noaa.gov
#
# SWPC Space Weather Alerts Issued in the last 24 hours
#---------------------------------------------------------------------
Space Weather Message Code: WATA50
Serial Number: 62
Issue Time: 2017 Sep 05 1714 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Sep 06: G3 (Strong) Sep 07: G3 (Strong) Sep 08: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
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: WATA30
Serial Number: 163
Issue Time: 2017 Sep 05 1313 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Sep 05: None (Below G1) Sep 06: G2 (Moderate) Sep 07: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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.
#-------------------------------------------------
Space Weather Message Code: ALTTP4
Serial Number: 539
Issue Time: 2017 Sep 05 1221 UTC
ALERT: Type IV Radio Emission
Begin Time: 2017 Sep 05 1139 UTC
www.swpc.noaa.gov/noaa-scales-explanation
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: WARPX1
Serial Number: 463
Issue Time: 2017 Sep 05 1137 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 462
Valid From: 2017 Sep 05 0030 UTC
Now Valid Until: 2017 Sep 05 2359 UTC
Warning Condition: persistence
Predicted NOAA Scale: S1 - Minor
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.
#-------------------------------------------------
Space Weather Message Code: ALTEF3
Serial Number: 2654
Issue Time: 2017 Sep 05 0826 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2653
Begin Time: 2017 Sep 01 1350 UTC
Yesterday Maximum 2MeV Flux: 15827 pfu
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
#-------------------------------------------------
Space Weather Message Code: ALTPX2
Serial Number: 59
Issue Time: 2017 Sep 05 0732 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2017 Sep 05 0715 UTC
NOAA Scale: S2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
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: ALTTP4
Serial Number: 538
Issue Time: 2017 Sep 05 0601 UTC
ALERT: Type IV Radio Emission
Begin Time: 2017 Sep 05 0500 UTC
www.swpc.noaa.gov/noaa-scales-explanation
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: ALTPX1
Serial Number: 316
Issue Time: 2017 Sep 05 0039 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2017 Sep 05 0038 UTC
NOAA Scale: S1 - Minor
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.
#-------------------------------------------------
Space Weather Message Code: WARPX1
Serial Number: 462
Issue Time: 2017 Sep 05 0030 UTC
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2017 Sep 05 0030 UTC
Valid To: 2017 Sep 05 1200 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
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.
#-------------------------------------------------
Space Weather Message Code: ALTK05
Serial Number: 1146
Issue Time: 2017 Sep 05 0000 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2017 Sep 04 2359 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: WARK04
Serial Number: 3306
Issue Time: 2017 Sep 04 2325 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3305
Valid From: 2017 Sep 04 1940 UTC
Now Valid Until: 2017 Sep 05 0900 UTC
Warning Condition: Persistence
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.
#-------------------------------------------------
Space Weather Message Code: WARK05
Serial Number: 1391
Issue Time: 2017 Sep 04 2318 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2017 Sep 04 2317 UTC
Valid To: 2017 Sep 05 0600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
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: SUM10R
Serial Number: 695
Issue Time: 2017 Sep 04 2136 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2017 Sep 04 2027 UTC
Maximum Time: 2017 Sep 04 2050 UTC
End Time: 2017 Sep 04 2119 UTC
Duration: 52 minutes
Peak Flux: 1600 sfu
Latest Penticton Noon Flux: 183 sfu
Comment: Castelli-U
www.swpc.noaa.gov/noaa-scales-explanation
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: ALTTP2
Serial Number: 1057
Issue Time: 2017 Sep 04 2112 UTC
ALERT: Type II Radio Emission
Begin Time: 2017 Sep 04 2042 UTC
Estimated Velocity: 1472 km/s
Comment: Uncertain quality from Sagamore Hill, no other observatory reports at this time.
www.swpc.noaa.gov/noaa-scales-explanation
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: ALTK04
Serial Number: 2001
Issue Time: 2017 Sep 04 2103 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2017 Sep 04 2059 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
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.
#-------------------------------------------------
Space Weather Message Code: SUMXM5
Serial Number: 150
Issue Time: 2017 Sep 04 2050 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2017 Sep 04 2028 UTC
Maximum Time: 2017 Sep 04 2033 UTC
End Time: 2017 Sep 04 2037 UTC
X-ray Class: M5.5
NOAA Scale: R2 - Moderate
Comment: Flare occurred from Region 2673
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.
#-------------------------------------------------
Space Weather Message Code: ALTXMF
Serial Number: 267
Issue Time: 2017 Sep 04 2035 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2017 Sep 04 2033 UTC
NOAA Scale: R2 - Moderate
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.
#-------------------------------------------------
Space Weather Message Code: SUM10R
Serial Number: 694
Issue Time: 2017 Sep 04 2032 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2017 Sep 04 2011 UTC
Maximum Time: 2017 Sep 04 2013 UTC
End Time: 2017 Sep 04 2018 UTC
Duration: 5 minutes
Peak Flux: 200 sfu
Latest Penticton Noon Flux: 120 sfu
www.swpc.noaa.gov/noaa-scales-explanation
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: ALTTP4
Serial Number: 537
Issue Time: 2017 Sep 04 1949 UTC
ALERT: Type IV Radio Emission
Begin Time: 2017 Sep 04 1938 UTC
www.swpc.noaa.gov/noaa-scales-explanation
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: WARK04
Serial Number: 3305
Issue Time: 2017 Sep 04 1941 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2017 Sep 04 1940 UTC
Valid To: 2017 Sep 04 2359 UTC
Warning Condition: Onset
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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