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- DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
-
- 13 NOVEMBER, 1991
-
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- (Based In-Part On SESC Observational Data)
-
-
- SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 13 NOVEMBER
- ------------------------------------------------------
-
- Please Note: Todays fluence at greater than 1 MeV may be considered correct.
-
- !!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 317, 11/13/91
- 10.7 FLUX=181.2 90-AVG=201 SSN=154 BKI=1133 4422 BAI=013
- BGND-XRAY=B6.8 FLU1=2.1E+05 FLU10=8.3E+03 PKI=1123 4422 PAI=013
- BOU-DEV=007,008,022,029,042,049,018,019 DEV-AVG=024 NT SWF=01:005
- XRAY-MAX= M1.3 @ 2125UT XRAY-MIN= B5.6 @ 2033UT XRAY-AVG= B9.7
- NEUTN-MAX= +003% @ 1115UT NEUTN-MIN= -002% @ 2340UT NEUTN-AVG= +0.4%
- PCA-MAX= +0.3DB @ 1540UT PCA-MIN= -0.3DB @ 1930UT PCA-AVG= -0.0DB
- BOUTF-MAX=55316NT @ 0819UT BOUTF-MIN=55282NT @ 1937UT BOUTF-AVG=55303NT
- GOES7-MAX=P:+138NT@ 1651UT GOES7-MIN=N:+004NT@ 2344UT G7-AVG=+094,+035,+011
- GOES6-MAX=P:+138NT@ 2109UT GOES6-MIN=E:-025NT@ 0759UT G6-AVG=+100,-008,+024
- FLUXFCST=STD:180,180,185;SESC:180,180,185 BAI/PAI-FCST=015,015,015/010,010,015
- KFCST=2443 3223 3443 2223 27DAY-AP=011,009 27DAY-KP=2222 3322 1222 2233
- WARNINGS=*MAJFLR
- ALERTS=**MINFLR:M1.3@2125;**245STRM:0905-2400
- !!END-DATA!!
-
-
- BRIEF SUMMARY OF EVENTS
- -----------------------
-
- Solar activity today was moderate. The only notable event of the day
- was a minor class M1.3 flare at 21:25 UT. Preliminary data is unable to
- establish an optical correlation for this event, due to poor observing
- conditions at the available observatories. This flare was associated with a
- 245 MHz burst of 2,600 sfu, although no tenflare was observed.
-
- Region 6919 (S12E10) experienced some growth in spot area. The large
- leading spot was also observed splitting today. This region remains the
- largest and most complex region presently visible. It is a DKI optical group
- with a beta-delta magnetic configuration. This region as well as Region 6921
- (N09W00) are capable of spawning minor M-class flares. Region 6921 showed a
- slight increase in magnetic complexity. Region 6915 (N20W35) was observed
- decaying. However, it did produce isolated subflares.
-
- A single new region was assigned near the west limb. Region 6925 is
- located at S05W72.
-
- The geomagnetid field was quiet to active today. Overall activity was
- generally quiet to unsettled. Conditions should remain mostly unsettled over
- the next 24 hours with possible weak episodes of active conditions.
-
- HF propagation conditions have been normal to slightly below normal
- throughout most of the UT day over all regions. Conditions should continue
- near normal over most regions over the next 48 hours at least.
-
-
- ** End of Daily Update **
-