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91-10-19.DLY
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1991-10-22
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/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
19 OCTOBER, 1991
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
(Based In-Part On SESC Observational Data)
SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 19 OCTOBER
-----------------------------------------------------
!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 292, 10/19/91
10.7 FLUX=154.3 90-AVG=197 SSN=140 BKI=2222 2323 BAI=009
BGND-XRAY=B5.6 FLU1=*.*E*** FLU10=5.7E+03 PKI=1222 2233 PAI=009
BOU-DEV=010,013,012,012,012,026,014,020 DEV-AVG=014 NT SWF=00:000
XRAY-MAX= C3.2 @ 1311UT XRAY-MIN= B5.2 @ 0149UT XRAY-AVG= B8.9
NEUTN-MAX= +002% @ 2055UT NEUTN-MIN= -004% @ 0330UT NEUTN-AVG= -0.3%
PCA-MAX= +0.7DB @ 1040UT PCA-MIN= -1.3DB @ 1800UT PCA-AVG= +0.0DB
BOUTF-MAX=55306NT @ 0357UT BOUTF-MIN=55270NT @ 1843UT BOUTF-AVG=55293NT
GOES7-MAX=P:+120NT@ 1758UT GOES7-MIN=N:-005NT@ 2338UT G7-AVG=+075,+039,+007
GOES6-MAX=P:+125NT@ 1929UT GOES6-MIN=E:-040NT@ 0745UT G6-AVG=+085,-004,+021
FLUXFCST=STD:155,155,160;SESC:154,154,160 BAI/PAI-FCST=010,010,015/012,015,015
KFCST=4234 2231 3432 3232 27DAY-AP=006,007 27DAY-KP=1112 2221 2112 2222
WARNINGS=
ALERTS=
!!END-DATA!!
BRIEF SUMMARY OF EVENTS
-----------------------
Solar activity remained low today. The only notable event was a
long-duration optically uncorrelated class C3.2 x-ray event at 13:11 UT. The
source of this event is unknown, but probably originated beyond the east
limb. No surging or prominence activity was noted in conjunction with this
event.
Regions 6873 (S22W72) and 6879 (N23W01) continued to decay today. Both
regions only managed to produce a single B-class subflare. M-class flares
are no longer expected in either of these regions. Solar activity should
remain limited to C-class flares.
Geomagnetic activity has been quiet to unsettled today. Activity should
continue mostly quiet to unsettled, with possible isolated active periods
particularly over the higher latitudes.
HF propagation conditions have remained normal to above normal over the
last 24 hours and should continue near normal over the next 24 to 48 hours.
No significant degradations are anticipated at this time, although high
latitude signal paths may experience slightly increased degradation over the
next 24 to 72 hours as a result of minor enhanced geomagnetic activity.
** End of Daily Update **