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Attività solare del 12 ottobre 2017

Il Sole il 12 ottobre 2017. SOHO.
 
Il Sole il 9 ottobre. SOHO.
 
:Product: NOAA 3-day Geomagnetic Forecasts
:Issued: 2017 Oct 11 2200 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
NOAA Ap Index Forecast
Observed Ap 10 Oct 004
Estimated Ap 11 Oct 033
Predicted Ap 12 Oct-14 Oct 030-035-025

NOAA Geomagnetic Activity Probabilities 12 Oct-14 Oct
Active                20/20/25
Minor storm           35/30/25
Moderate storm        26/25/15
Strong-Extreme storm  10/15/10

NOAA Kp index forecast 12 Oct - 14 Oct
             Oct 12    Oct 13    Oct 14
00-03UT        5         5         4
03-06UT        4         4         4
06-09UT        4         4         4
09-12UT        4         4         4
12-15UT        3         3         3
15-18UT        4         5         4
18-21UT        4         5         4
21-00UT        5         5         4

 

:Product: Solar Region Summary
:Issued: 2017 Oct 12 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 285 Issued at 0030Z on 12 Oct 2017
Report compiled from data received at SWO on 11 Oct
I.  Regions with Sunspots.  Locations Valid at 11/2400Z 
Nmbr Location  Lo  Area  Z   LL   NN Mag Type
None
IA. H-alpha Plages without Spots.  Locations Valid at 11/2400Z Oct
Nmbr  Location  Lo
None
II. Regions Due to Return 12 Oct to 14 Oct
Nmbr Lat    Lo
None

 

:Product: Solar and Geophysical Activity Summary
:Issued: 2017 Oct 12 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 285 Issued at 0245Z on 12 Oct 2017
This report is compiled from data received at SWO on 11 Oct
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 1450 1450 1450                       100                           
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field reached
minor storm levels.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 070  SSN 000  Afr/Ap 021/027   X-ray Background A1.1
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 7.7e+08   GT 10 MeV 1.8e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W74 degrees)
Daily Electron Fluence
GT 2 MeV 1.70e+06 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W74 degrees)
3 Hour K-indices:
Boulder 3 3 5 4 4 4 3 3 Planetary 3 4 5 4 4 5 3 3 
F.  Comments:  None.

 

Space Weather Message Code: ALTEF3
Serial Number: 2680
Issue Time: 2017 Oct 12 1405 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2017 Oct 12 1350 UTC
Station: GOES13
 

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

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