[Finalsolar] Daily Summary of Solar Geophysical Activity for 18 April

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

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                 DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY

                                 18 APRIL, 2008

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                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 18 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 109, 04/18/08
10.7 FLUX=070.0  90-AVG=071        SSN=000      BKI=1322 2211  BAI=006
BGND-XRAY=A1.0     FLU1=*.*E+**  FLU10=*.*E+**  PKI=2321 1111  PAI=006
  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:070,075,075;SESC:070,075,075 BAI/PAI-FCST=005,005,008/005,005,015
    KFCST=**** **** **** ****  27DAY-AP=005,008   27DAY-KP=1011 1113 3332 1111
 WARNINGS=
   ALERTS=
!!END-DATA!!

NOTE: The Effective Sunspot Number for 17 APR 08 is not available.
      The Full Kp Indices for 18 APR 08 are: 2- 3- 2+ 1o   1o 1+ 1+ 1+ 
      The 3-Hr Ap Indices for 18 APR 08 are:   6  12   9   4   4   5   5   5 
      Greater than 2 MeV Electron Fluence for 18 APR is: 1.5E+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.

            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 remain mostly quiet for days 1 and 2 (19-20 april)
       becming mostly unsettled by day 3 (21 april) as a recurrent coronal
       hole begins to rotate into a geoeffective position.

            Event probabilities 19 apr-21 apr

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

            Geomagnetic activity probabilities 19 apr-21 apr

                        A.  Middle Latitudes
                        Active                10/10/20
                        Minor storm           05/05/05
                        Major-severe storm    01/01/01

                        B.  High Latitudes
                        Active                10/10/40
                        Minor storm           05/05/10
                        Major-severe storm    01/01/05


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

 Regions with Sunspots.  Locations Valid at 18/2400Z 
-----------------------------------------------------
Nmbr Location  Lo  Area  Z   LL   NN Mag Type
None
0990 N27W34   000                    Plage
Regions Due to Return 19 Apr to 21 Apr
Nmbr Lat    Lo
None


LISTING OF SOLAR ENERGETIC EVENTS FOR 18 APRIL, 2008
----------------------------------------------------
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None


**  End of Daily Report  **