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Attività solare del 17 ottobre 2017

Il Sole il 17 ottobre 2017. SOHO.
 
Il Sole il 17 ottobre. SOHO.
 
:Product: NOAA 3-day Geomagnetic Forecasts
:Issued: 2017 Oct 16 2200 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
NOAA Ap Index Forecast
Observed Ap 15 Oct 026
Estimated Ap 16 Oct 015
Predicted Ap 17 Oct-19 Oct 010-012-012

NOAA Geomagnetic Activity Probabilities 17 Oct-19 Oct
Active                25/30/30
Minor storm           10/20/20
Moderate storm        01/10/10
Strong-Extreme storm  01/01/01

NOAA Kp index forecast 17 Oct - 19 Oct
             Oct 17    Oct 18    Oct 19
00-03UT        3         3         3
03-06UT        3         3         2
06-09UT        2         3         2
09-12UT        2         2         3
12-15UT        2         2         3
15-18UT        2         2         3
18-21UT        2         3         3
21-00UT        3         4         3

 

:Product: Solar Region Summary
:Issued: 2017 Oct 17 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 290 Issued at 0030Z on 17 Oct 2017
Report compiled from data received at SWO on 16 Oct
I.  Regions with Sunspots.  Locations Valid at 16/2400Z 
Nmbr Location  Lo  Area  Z   LL   NN Mag Type
None
IA. H-alpha Plages without Spots.  Locations Valid at 16/2400Z Oct
Nmbr  Location  Lo
2684  N11W46   314
II. Regions Due to Return 17 Oct to 19 Oct
Nmbr Lat    Lo
2682 S11    145

 

:Product: Solar and Geophysical Activity Summary
:Issued: 2017 Oct 17 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 290 Issued at 0245Z on 17 Oct 2017
This report is compiled from data received at SWO on 16 Oct
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B.  Proton Events:  None.
C.  Geomagnetic Activity Summary:  The geomagnetic field was mostly
quiet with an isolated unsettled period.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 071  SSN 000  Afr/Ap 006/007   X-ray Background A3.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 8.8e+06   GT 10 MeV 1.4e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W74 degrees)
Daily Electron Fluence
GT 2 MeV 1.20e+09 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W74 degrees)
3 Hour K-indices:
Boulder 1 3 2 2 2 1 2 1 Planetary 1 3 2 1 2 1 2 2 
F.  Comments:  The greater than 2 MeV electron fluence was at very
high levels on 16 October.

 

Space Weather Message Code: ALTEF3
Serial Number: 2685
Issue Time: 2017 Oct 17 0500 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2684
Begin Time: 2017 Oct 12 1350 UTC
Yesterday Maximum 2MeV Flux: 36945 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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