[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, 2008

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                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 20 APRIL, 2008
---------------------------------------------------------

NOTE: The background x-ray flux was below class A1.0 levels.
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 111, 04/20/08
10.7 FLUX=071.0  90-AVG=072        SSN=012      BKI=2011 1321  BAI=005
BGND-XRAY=A1.0     FLU1=*.*E+**  FLU10=*.*E+**  PKI=2000 1212  PAI=004
  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:075,080,080;SESC:075,080,080 BAI/PAI-FCST=005,008,015/005,008,015
    KFCST=**** **** **** ****  27DAY-AP=004,004   27DAY-KP=1110 1111 0001 1222
 WARNINGS=
   ALERTS=
!!END-DATA!!

NOTE: The Effective Sunspot Number for 19 APR 08 is not available.
      The Full Kp Indices for 20 APR 08 are: 2o 0o 0o 0+   1+ 2o 1+ 2- 
      The 3-Hr Ap Indices for 20 APR 08 are:   7   0   0   2   5   7   5   6 
      Greater than 2 MeV Electron Fluence for 20 APR is: 3.0E+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.  Region 991 (S10E15)
       decayed to a spotless plage.

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

            The geomagnetic field was quiet to unsettled.

            Geophysical activity forecast:  the geomagnetic field is
       expected to begin mostly quiet, increasing to  unsettled to active
       on the second and third days of the forecast period as a recurrent
       coronal hole high speed stream becomes geoeffective.  There is a
       chance geomagnetic field activity will reach minor storm levels at
       high latitudes.

            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                10/20/25
                        Minor storm           05/10/15
                        Major-severe storm    01/05/10

                        B.  High Latitudes
                        Active                10/25/30
                        Minor storm           05/10/15
                        Major-severe storm    01/05/10


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
0991 S10E15   283  0020 Axx  01   02 Alpha
0990 N27W60   000                    Plage
Regions Due to Return 21 Apr to 23 Apr
Nmbr Lat    Lo
None


LISTING OF SOLAR ENERGETIC EVENTS FOR 20 APRIL, 2008
----------------------------------------------------
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None


**  End of Daily Report  **