[Finalsolar] Daily Summary of Solar Geophysical Activity for 20 April

[Semi-finalized daily report of solar and geophysical activity.]

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                 DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                                 20 APRIL, 2007

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                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 20 APRIL, 2007
---------------------------------------------------------

NOTE: The background x-ray flux was below class A1.0 levels.
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 110, 04/20/07
10.7 FLUX=069.0  90-AVG=075        SSN=000      BKI=1221 1101  BAI=003
BGND-XRAY=A1.0     FLU1=*.*E+**  FLU10=*.*E+**  PKI=1111 1002  PAI=003
  BOU-DEV=***,***,***,***,***,***,***,***   DEV-AVG=*** NT     SWF=00:000
 XRAY-MAX= A1.0   @ 0000UT    XRAY-MIN= A1.0   @ 0000UT   XRAY-AVG= A1.0
NEUTN-MAX= +000%  @ 0000UT   NEUTN-MIN= +000%  @ 0000UT  NEUTN-AVG= +0.0%
  PCA-MAX= +0.0DB @ 0000UT     PCA-MIN= +0.0DB @ 0000UT    PCA-AVG= +0.0DB
BOUTF-MAX=00000NT @ 0000UT   BOUTF-MIN=00000NT @ 0000UT  BOUTF-AVG=00000NT
GOES9-MAX=N:+000NT@ 2359UT   GOES9-MIN=N:+000NT@ 2359UT  G9-AVG=+00,+00,+00
GOES8-MAX=N:+000NT@ 2359UT   GOES8-MIN=N:+000NT@ 2359UT  G8-AVG=+00,+00,+00
 FLUXFCST=STD:070,070,070;SESC:070,070,070 BAI/PAI-FCST=012,008,008/015,008,008
    KFCST=**** **** **** ****  27DAY-AP=021,010   27DAY-KP=4545 3112 2124 4212
 WARNINGS=
   ALERTS=
!!END-DATA!!

NOTE: The Effective Sunspot Number for 19 APR 07 is not available.
      The Full Kp Indices for 20 APR 07 are: 1o 1+ 1o 1-   1- 0o 0o 2- 
      The 3-Hr Ap Indices for 20 APR 07 are:   4   5   4   3   3   0   0   6 
      Greater than 2 MeV Electron Fluence for 20 APR is: 1.0E+07
      DRAO 10.7 cm Solar Flux at 18Z, 20Z, 22Z: N/A, N/A, N/A sfu.


SYNOPSIS OF ACTIVITY
--------------------

             Solar activity was very low.  The visible disk remains
       spotless.

            Solar activity forecast:  solar activity is expected to be very
       low.

            The geomagnetic field was quiet.

            Geophysical activity forecast:  the geomagnetic field is
       expected to range from quiet to active for the next three days due
       to a recurrent coronal hole high speed stream.  Isolated active
       periods are possible at high latitudes on 21 april.

            Event probabilities 21 apr-23 apr

                             Class M    01/01/01
                             Class X    01/01/01
                             Proton     01/01/01
                             PCAF       Green

            Geomagnetic activity probabilities 21 apr-23 apr

                        A.  Middle Latitudes
                        Active                35/25/25
                        Minor storm           15/10/10
                        Major-severe storm    05/01/01

                        B.  High Latitudes
                        Active                40/30/30
                        Minor storm           25/15/15
                        Major-severe storm    10/05/05


COPIES OF JOINT USAF/NOAA SEC SOLAR GEOPHYSICAL REPORTS
=======================================================

 Regions with Sunspots.  Locations Valid at 20/2400Z 
-----------------------------------------------------
Nmbr Location  Lo  Area  Z   LL   NN Mag Type
None
0951 S12W44   134                    Plage
Regions Due to Return 21 Apr to 23 Apr
Nmbr Lat    Lo
None


LISTING OF SOLAR ENERGETIC EVENTS FOR 20 APRIL, 2007
----------------------------------------------------
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None


**  End of Daily Report  **