[Finalsolar] Daily Summary of Solar Geophysical Activity for 21 April

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

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                 DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                                 21 APRIL, 2008

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                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 21 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 112, 04/21/08
10.7 FLUX=071.0  90-AVG=072        SSN=000      BKI=2322 1100  BAI=005
BGND-XRAY=A1.0     FLU1=*.*E+**  FLU10=*.*E+**  PKI=1211 0111  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:075,075,075;SESC:075,075,075 BAI/PAI-FCST=008,015,012/008,015,012
    KFCST=**** **** **** ****  27DAY-AP=004,027   27DAY-KP=0001 1222 1144 5454
 WARNINGS=
   ALERTS=
!!END-DATA!!

NOTE: The Effective Sunspot Number for 20 APR 08 is not available.
      The Full Kp Indices for 21 APR 08 are: 1+ 2+ 1- 1+   0+ 1+ 1- 1o 
      The 3-Hr Ap Indices for 21 APR 08 are:   5   9   3   5   2   5   3   4 
      Greater than 2 MeV Electron Fluence for 21 APR is: 2.1E+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. No flares occurred during
       the past 24 hours. The solar disk is void of spots.

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

            The geomagnetic field was mostly quiet during the past 24 hours.

            Geophysical activity forecast:  the geomagnetic field is
       expected be quiet for most of the first day (22 april). However, an
       increase to unsettled with a chance for isolated active periods is
       expected late on the first day (22 april) or early on the second day
       (23 april) with the onset of a high speed solar wind stream.
       Unsettled levels with occasional active periods are expected to
       persist for the second and third days (23-24 april).

            Event probabilities 22 apr-24 apr

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

            Geomagnetic activity probabilities 22 apr-24 apr

                        A.  Middle Latitudes
                        Active                25/40/35
                        Minor storm           10/15/15
                        Major-severe storm    05/05/05

                        B.  High Latitudes
                        Active                25/45/40
                        Minor storm           15/20/20
                        Major-severe storm    05/10/10


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

 Regions with Sunspots.  Locations Valid at 21/2400Z 
-----------------------------------------------------
Nmbr Location  Lo  Area  Z   LL   NN Mag Type
None
0990 N27W73   358                    Plage
0991 S10E02   283                    Plage
Regions Due to Return 22 Apr to 24 Apr
Nmbr Lat    Lo
None


LISTING OF SOLAR ENERGETIC EVENTS FOR 21 APRIL, 2008
----------------------------------------------------
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None


**  End of Daily Report  **