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- Newsgroups: sci.space.news
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!dont-send-mail-to-path-lines
- From: oler@rho.uleth.ca (Cary Oler)
- Subject: Daily Summary of Solar Geophysical Activity for 28 December
- Message-ID: <oler.725624300@honte>
- Apparently-To: sci-space-news@ames.arc.nasa.gov
- Followup-To: sci.space
- Sender: news@honte.uleth.ca (News System)
- Organization: University of Lethbridge
- Date: Tue, 29 Dec 1992 10:18:20 GMT
- Approved: sci-space-news@ames.arc.nasa.gov
- Lines: 126
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
-
- 28 DECEMBER, 1992
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- (Based In-Part On SESC Observational Data)
-
-
- SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 28 DECEMBER, 1992
- ------------------------------------------------------------
-
- !!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 363, 12/28/92
- 10.7 FLUX=127.2 90-AVG=139 SSN=112 BKI=2032 5454 BAI=022
- BGND-XRAY=B2.3 FLU1=7.3E+05 FLU10=1.0E+04 PKI=2032 5555 PAI=029
- BOU-DEV=015,004,026,015,104,062,083,054 DEV-AVG=045 NT SWF=00:000
- XRAY-MAX= C2.3 @ 0651UT XRAY-MIN= B2.1 @ 0351UT XRAY-AVG= B3.3
- NEUTN-MAX= +002% @ 0820UT NEUTN-MIN= -003% @ 2040UT NEUTN-AVG= -0.5%
- PCA-MAX= +0.1DB @ 2355UT PCA-MIN= -0.4DB @ 1055UT PCA-AVG= +0.0DB
- BOUTF-MAX=55418NT @ 2354UT BOUTF-MIN=55357NT @ 1754UT BOUTF-AVG=55401NT
- GOES7-MAX=P:+139NT@ 1843UT GOES7-MIN=N:-037NT@ 1259UT G7-AVG=+072,+022,+009
- GOES6-MAX=P:+163NT@ 1845UT GOES6-MIN=N:-027NT@ 2226UT G6-AVG=+091,-003,+029
- FLUXFCST=STD:130,130,125;SESC:130,130,125 BAI/PAI-FCST=010,010,010/015,010,010
- KFCST=2224 3111 1112 3111 27DAY-AP=015,009 27DAY-KP=3344 3322 3333 2221
- WARNINGS=*GSTRM;*AURMIDWCH
- ALERTS=**SWEEP:II=1@0655UTC;**SWEEP:IV=1@0659UTC
- !!END-DATA!!
-
-
- SYNOPSIS OF ACTIVITY
- --------------------
-
- Solar activity was low. Region 7376 (N15W47), a
- small (30 millionths) CRO group, produced today's only flare:
- a C2.3/1B at 0651Z. The event was accompanied by weak Type II
- and Type IV sweeps. The largest group on the disk, 7381
- (N05W10), continued to show steady growth today but was stable.
-
- Solar activity forecast: solar activity is expected to be
- low.
-
- The geomagnetic ranged from quiet to storm levels. Conditions
- bounced from quiet to active from the beginning of the period
- through 1200Z. Since 1200Z mid-latitudes have been at active
- to minor storm levels and high-latitudes fluctuated from minor
- to severe storm levels. The most likely source for this distur-
- bance is a filament that erupted from disk center on 22
- December.
-
- Geophysical activity forecast: the geomagnetic field is
- expected to be generally unsettled. The current disturbance is
- expected to subside some time in the next 12 hours.
-
- Event probabilities 29 dec-31 dec
-
- Class M 10/10/10
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
-
- Geomagnetic activity probabilities 29 dec-31 dec
-
- A. Middle Latitudes
- Active 30/25/25
- Minor Storm 15/10/10
- Major-Severe Storm 01/01/01
-
- B. High Latitudes
- Active 35/25/25
- Minor Storm 15/10/10
- Major-Severe Storm 05/01/01
-
- HF propagation conditions deteriorated over the last 24 hours to
- slightly below normal. Minor signal degradation has occurred over the
- high and polar latitude paths in the form of enhanced fading and
- multipath activity due to increased levels of geomagnetic and auroral
- activity. Conditions are expected to continue below normal over the
- next 24 hours and should affect the middle to polar latitude paths
- (with greatest emphasis on the high and polar latitude paths). Some
- improvements are expected on 30 December.
-
-
- COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
- ========================================================
-
- REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 28/2400Z DECEMBER
- -----------------------------------------------------------
- NMBR LOCATION LO AREA Z LL NN MAG TYPE
- 7374 S11W57 001 0120 HSX 02 001 ALPHA
- 7376 N15W48 352 0040 DAO 04 007 BETA
- 7378 N11W38 342 0050 HSX 02 001 ALPHA
- 7379 S10W12 316 0060 CSO 04 005 BETA
- 7381 N04W10 314 0240 DSO 10 018 BETA
- 7383 S05W12 316 0020 CRO 05 009 BETA
- 7385 S23W56 360 0000 AXX 00 001 ALPHA
- 7372 S12W76 020 PLAGE
- 7382 S18E10 294 PLAGE
- 7384 N02W40 344 PLAGE
- REGIONS DUE TO RETURN 29 DECEMBER TO 31 DECEMBER
- NMBR LAT LO
- 7362 S06 176
- 7355 S19 203
-
-
- LISTING OF SOLAR ENERGETIC EVENTS FOR 28 DECEMBER, 1992
- -------------------------------------------------------
- BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP SWF
- 0640 0651 0702 7376 N14W40 C2.5 1B II/IV
-
-
- POSSIBLE CORONAL MASS EJECTION EVENTS FOR 28 DECEMBER, 1992
- -----------------------------------------------------------
- BEGIN MAX END LOCATION TYPE SIZE DUR II IV
- 28/B0655 A0659 N14W40 RSP C2.5 22 1 1
-
-
- INFERRED CORONAL HOLES. LOCATIONS VALID AT 28/2400Z
- ---------------------------------------------------
- ISOLATED HOLES AND POLAR EXTENSIONS
- EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN
- NO DATA AVAILABLE FOR ANALYSIS
-
-
- ** End of Daily Report **
-