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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 25 January
- Message-ID: <oler.728031654@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, 26 Jan 1993 07:00:54 GMT
- Approved: sci-space-news@ames.arc.nasa.gov
- Lines: 132
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
-
- 25 JANUARY, 1993
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- (Based In-Part On SESC Observational Data)
-
-
- SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 25 JANUARY, 1993
- -----------------------------------------------------------
-
- !!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 025, 01/25/93
- 10.7 FLUX=105.8 90-AVG=138 SSN=075 BKI=0013 5443 BAI=016
- BGND-XRAY=B1.6 FLU1=6.5E+05 FLU10=9.5E+03 PKI=1123 6443 PAI=018
- BOU-DEV=004,004,009,026,098,055,046,026 DEV-AVG=033 NT SWF=00:000
- XRAY-MAX= B5.6 @ 0746UT XRAY-MIN= B1.3 @ 1901UT XRAY-AVG= B1.8
- NEUTN-MAX= +002% @ 1400UT NEUTN-MIN= -002% @ 2330UT NEUTN-AVG= -0.0%
- PCA-MAX= +0.1DB @ 0335UT PCA-MIN= -0.2DB @ 2355UT PCA-AVG= -0.0DB
- BOUTF-MAX=55418NT @ 1120UT BOUTF-MIN=55371NT @ 1943UT BOUTF-AVG=55406NT
- GOES7-MAX=P:+132NT@ 1949UT GOES7-MIN=N:-025NT@ 1341UT G7-AVG=+084,+024,+011
- GOES6-MAX=P:+153NT@ 1726UT GOES6-MIN=N:-016NT@ 1951UT G6-AVG=+104,-002,+033
- FLUXFCST=STD:105,105,110;SESC:105,105,110 BAI/PAI-FCST=020,020,015/025,020,015
- KFCST=3335 6333 3335 6333 27DAY-AP=029,042 27DAY-KP=2032 5555 5565 5533
- WARNINGS=*AURMIDWCH
- ALERTS=
- !!END-DATA!!
-
-
- SYNOPSIS OF ACTIVITY
- --------------------
-
- Solar activity was very low. Region 7408 (N10W76)
- produced a few optical subflares but all of them had x-ray
- output which was less than C level. Other regions were quiet.
-
- Solar activity forecast: solar activity is expected to be
- very low.
-
- The geomagnetic field was quiet until about 25/1030Z. At that
- time the field gradually became disturbed with active to storm
- conditions observed at all locations. Severe storm conditions
- occurred at some high latitude stations from 25/1200-1500Z.
- The source of this disturbance is not certain although a coronal
- hole is a likely candidate.
-
- Geophysical activity forecast: the geomagnetic field is
- expected to be unsettled to active throughout the forecast
- period. Isolated storm conditions are possible.
-
- A Middle Latitude Auroral Activity Watch is being issued
- for the next 48 to 72 hours (through 19Z on 27 January
- inclusive). The anticipated coronal disturbance could elevate
- levels of auroral activity sufficiently to be observed over
- some middle latitude locations. Areas north of the U.S./Canada
- border are more likely to observe this activity than parts
- further south. Lunar phase will not significantly inhibit
- attempts to view this activity.
-
- Event probabilities 26 jan-28 jan
-
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
-
- Geomagnetic activity probabilities 26 jan-28 jan
-
- A. Middle Latitudes
- Active 40/45/30
- Minor Storm 30/25/15
- Major-Severe Storm 15/10/05
-
- B. High Latitudes
- Active 10/25/30
- Minor Storm 45/45/40
- Major-Severe Storm 30/20/15
-
- HF propagation destabilized over most regions during the
- last 24 hours. All regions except the lower latitudes have
- experienced periods of below normal propagation. Lower
- latitudes have seen near-normal propagation throughout the
- period. Conditions are expected to deteriorate further over
- the next 24 hours, with a very gradual improvement expected
- thereafter for the next several days. Night-sector propagation
- is expected to be least-stable with possibly frequent periods
- of fading, absorption, and multipath activity.
-
-
- COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
- ========================================================
-
- REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 25/2400Z JANUARY
- ----------------------------------------------------------
- NMBR LOCATION LO AREA Z LL NN MAG TYPE
- 7403 N14W63 358 0140 HSX 02 001 ALPHA
- 7406 S15W11 306 0060 CSO 05 004 BETA
- 7407 S07E20 275 0020 HRX 01 003 ALPHA
- 7408 N10W76 011 0010 BXO 04 002 BETA
- 7409 N17W23 318 0010 BXO 04 003 BETA
- 7410 S20W15 310 0000 AXX 02 002 ALPHA
- 7401 S11W83 018 PLAGE
- REGIONS DUE TO RETURN 26 JANUARY TO 28 JANUARY
- NMBR LAT LO
- 7386 S05 183
- 7394 S16 178
-
-
- LISTING OF SOLAR ENERGETIC EVENTS FOR 25 JANUARY, 1993
- ------------------------------------------------------
- BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP SWF
- NO EVENTS OBSERVED
-
-
- POSSIBLE CORONAL MASS EJECTION EVENTS FOR 25 JANUARY, 1993
- ----------------------------------------------------------
- BEGIN MAX END LOCATION TYPE SIZE DUR II IV
- NO EVENTS OBSERVED
-
-
- INFERRED CORONAL HOLES. LOCATIONS VALID AT 25/2400Z
- ---------------------------------------------------
- ISOLATED HOLES AND POLAR EXTENSIONS
- EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN
- 82 S35W31 S39W33 S02W59 S02W59 348 ISO POS 018 10830A
- 83 N26W09 N01W21 N22W48 N37W28 333 ISO POS 025 10830A
- 84 S35E39 S40E37 S29E05 S25E26 284 ISO NEG 015 10830A
-
-
- ** End of Daily Report **
-