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Attività solare del 4 ottobre 2017

Il Sole il 4 ottobre 2017. SOHO.
 
Il Sole il 4 ottobre. SOHO.
 
:Product: NOAA 3-day Geomagnetic Forecasts
:Issued: 2017 Oct 03 2200 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
NOAA Ap Index Forecast
Observed Ap 02 Oct 007
Estimated Ap 03 Oct 009
Predicted Ap 04 Oct-06 Oct 005-005-005

NOAA Geomagnetic Activity Probabilities 04 Oct-06 Oct
Active                20/15/20
Minor storm           01/01/01
Moderate storm        01/01/01
Strong-Extreme storm  01/01/01

NOAA Kp index forecast 04 Oct - 06 Oct
             Oct 04    Oct 05    Oct 06
00-03UT        2         2         2
03-06UT        1         1         2
06-09UT        1         1         1
09-12UT        1         1         1
12-15UT        1         1         1
15-18UT        1         2         1
18-21UT        2         1         1
21-00UT        2         2         2
:Product: Solar Region Summary
:Issued: 2017 Oct 04 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 277 Issued at 0030Z on 04 Oct 2017
Report compiled from data received at SWO on 03 Oct
I.  Regions with Sunspots.  Locations Valid at 03/2400Z 
Nmbr Location  Lo  Area  Z   LL   NN Mag Type
2682 S10W47   126  0120 Hsx  02   01 Alpha
2683 N13W32   111  0330 Cko  04   04 Beta
IA. H-alpha Plages without Spots.  Locations Valid at 03/2400Z Oct
Nmbr  Location  Lo
None
II. Regions Due to Return 04 Oct to 06 Oct
Nmbr Lat    Lo
2680 N08    336
:Product: Solar and Geophysical Activity Summary
:Issued: 2017 Oct 04 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 277 Issued at 0245Z on 04 Oct 2017
This report is compiled from data received at SWO on 03 Oct
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0037 0037 0037                       100                           
 0116 0119 0121  2683        B2.2     1100                          
 0218 0218 0218                       120                           
 0325 0325 0325                       260                           
 0336 0336 0336                       160                           
 0429 0429 0429                       150                           
 0718 0718 0718                       230                           
 0832 0832 0832                       220                           
 0841 0841 0841                       160                           
 0920 0920 0920                       250                           
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field was quiet to
unsettled with an isolated active period.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 086  SSN 025  Afr/Ap 008/???   X-ray Background A5.5
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.8e+06   GT 10 MeV 1.4e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 3.30e+08 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 2 3 4 2 1 1 2 1 Planetary 2 3 4 1 0 1 1 2 
F.  Comments:  The GOES-13 greater than 2 MeV electron fluence
reached very high levels during the period.
Space Weather Message Code: ALTEF3
Serial Number: 2678
Issue Time: 2017 Oct 04 0501 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2677
Begin Time: 2017 Sep 28 1235 UTC
Yesterday Maximum 2MeV Flux: 6557 pfu

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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