[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, 2007

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                  (Based In-Part On SESC Observational Data)


SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 18 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 108, 04/18/07
10.7 FLUX=069.0  90-AVG=075        SSN=011      BKI=4311 1223  BAI=010
BGND-XRAY=A1.0     FLU1=*.*E+**  FLU10=*.*E+**  PKI=4311 1123  PAI=009
  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=008,015,008/010,015,010
    KFCST=**** **** **** ****  27DAY-AP=002,010   27DAY-KP=1001 0101 1112 3333
 WARNINGS=
   ALERTS=
!!END-DATA!!

NOTE: The Effective Sunspot Number for 17 APR 07 is not available.
      The Full Kp Indices for 18 APR 07 are: 4- 3o 1o 1-   1- 1o 2o 3- 
      The 3-Hr Ap Indices for 18 APR 07 are:  22  15   4   3   3   4   7  12 
      Greater than 2 MeV Electron Fluence for 18 APR is: 2.8E+06
      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 be very
       low.

            The geomagnetic field was predominantly quiet to unsettled with one
       active period from 18/0000Z-0300Z.

            Geophysical activity forecast:  the geomagnetic field is
       expected to be predominantly quiet to unsettled with isolated active
       periods for the next three days.  Isolated minor storm conditions
       are possible at high latitudes on 20 april in response to a
       favorably positioned coronal hole.

            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                20/30/25
                        Minor storm           10/20/10
                        Major-severe storm    01/05/01

                        B.  High Latitudes
                        Active                25/35/30
                        Minor storm           15/25/15
                        Major-severe storm    05/10/05


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
0951 S12W18   134  0010 Axx  01   01 Alpha
0952 S08W86   202                    Plage
Regions Due to Return 19 Apr to 21 Apr
Nmbr Lat    Lo
None


LISTING OF SOLAR ENERGETIC EVENTS FOR 18 APRIL, 2007
----------------------------------------------------
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None


**  End of Daily Report  **