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- Date: Fri, 15 Apr 94 04:30:02 PDT
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- Subject: Info-Hams Digest V94 #418
- To: Info-Hams
-
-
- Info-Hams Digest Fri, 15 Apr 94 Volume 94 : Issue 418
-
- Today's Topics:
- Daily Summary of Solar Geophysical Activity for 11 April
-
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- Date: Wed, 13 Apr 1994 23:12:04 MDT
- From: galaxy.ucr.edu!library.ucla.edu!europa.eng.gtefsd.com!news.umbc.edu!eff!news.kei.com!yeshua.marcam.com!zip.eecs.umich.edu!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!alberta@ihnp4.ucsd.edu
- Subject: Daily Summary of Solar Geophysical Activity for 11 April
- To: info-hams@ucsd.edu
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- DAILY SUMMARY OF SOLAR GEOPHYSICAL ACTIVITY
-
- 11 APRIL, 1994
-
- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
-
- (Based In-Part On SESC Observational Data)
-
-
- SOLAR AND GEOPHYSICAL ACTIVITY INDICES FOR 11 APRIL, 1994
- ---------------------------------------------------------
-
- !!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 101, 04/11/94
- 10.7 FLUX=074.3 90-AVG=095 SSN=015 BKI=3565 3334 BAI=032
- BGND-XRAY=A1.4 FLU1=1.4E+06 FLU10=9.7E+03 PKI=4665 4334 PAI=039
- BOU-DEV=032,099,130,088,021,029,035,067 DEV-AVG=062 NT SWF=00:000
- XRAY-MAX= B1.0 @ 0528UT XRAY-MIN= A1.0 @ 2101UT XRAY-AVG= A3.8
- NEUTN-MAX= +003% @ 0640UT NEUTN-MIN= -002% @ 0510UT NEUTN-AVG= +0.4%
- PCA-MAX= +0.1DB @ 2345UT PCA-MIN= -0.3DB @ 2205UT PCA-AVG= +0.0DB
- BOUTF-MAX=55364NT @ 2226UT BOUTF-MIN=55294NT @ 0902UT BOUTF-AVG=55327NT
- GOES7-MAX=P:+000NT@ 0000UT GOES7-MIN=N:+000NT@ 0000UT G7-AVG=+067,+000,+000
- GOES6-MAX=P:+125NT@ 1613UT GOES6-MIN=N:-114NT@ 0648UT G6-AVG=+086,+030,-053
- FLUXFCST=STD:115,115,110;SESC:115,115,110 BAI/PAI-FCST=020,020,015/025,020,015
- KFCST=3445 5333 3344 5333 27DAY-AP=042,018 27DAY-KP=5655 5544 4343 3433
- WARNINGS=*GSTRM;*AURMIDWRN
- ALERTS=**MINSTRM
- !!END-DATA!!
-
- NOTE: The Effective Sunspot Number for 10 APR 94 was 12.0.
- The Full Kp Indices for 10 APR 94 are: 5- 5- 4- 5- 5o 4- 3+ 4-
- The 3-Hr Ap Indices for 10 APR 94 are: 44 38 25 39 51 23 17 25
- Greater than 2 MeV Electron Fluence for 11 APR is: 9.6E+08
-
-
- SYNOPSIS OF ACTIVITY
- --------------------
-
- Solar activity was very low. Region 7700 (N10E34)
- evolved to be a stacked bipole, but has been quiet. New spots
- may be emerging in the western hemisphere near N18W40.
-
- Solar activity forecast: solar activity is expected to be
- very low.
-
- The geomagnetic field has varied from unsettled to major
- storm levels, with the most disturbed periods occurring
- during local nighttime hours. This lingering disturbance is
- thought to be due to high speed solar wind emanating from
- the southern polar crown coronal hole. The greater than 2 MeV
- electron fluence is again at very high levels.
-
- Geophysical activity forecast: the geomagnetic field is
- expected to be mostly active for the next 48 hours, with
- intervals of minor to major storming at night. April 14 should
- see predominantly unsettled conditions.
-
- Event probabilities 12 apr-14 apr
-
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
-
- Geomagnetic activity probabilities 12 apr-14 apr
-
- A. Middle Latitudes
- Active 35/35/25
- Minor Storm 25/25/10
- Major-Severe Storm 10/10/05
-
- B. High Latitudes
- Active 40/40/30
- Minor Storm 30/30/20
- Major-Severe Storm 15/15/10
-
- HF propagation conditions continued well below normal.
- Improvements are now not expected until 13 or 14 April over the
- upper-middle to polar latitudes, but should begin recovering over the
- lower latitude regions over the next 24 to 48 hours.
-
-
- COPIES OF JOINT USAF/NOAA SESC SOLAR GEOPHYSICAL REPORTS
- ========================================================
-
- REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 11/2400Z APRIL
- --------------------------------------------------------
- NMBR LOCATION LO AREA Z LL NN MAG TYPE
- 7700 N09E34 202 0030 CSO 05 005 BETA
- REGIONS DUE TO RETURN 12 APRIL TO 14 APRIL
- NMBR LAT LO
- NONE
-
-
- LISTING OF SOLAR ENERGETIC EVENTS FOR 11 APRIL, 1994
- ----------------------------------------------------
- BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP
- NONE
-
-
- POSSIBLE CORONAL MASS EJECTION EVENTS FOR 11 APRIL, 1994
- --------------------------------------------------------
- BEGIN MAX END LOCATION TYPE SIZE DUR II IV
- NO EVENTS OBSERVED
-
-
- INFERRED CORONAL HOLES. LOCATIONS VALID AT 11/2400Z
- ---------------------------------------------------
- ISOLATED HOLES AND POLAR EXTENSIONS
- EAST SOUTH WEST NORTH CAR TYPE POL AREA OBSN
- 76 S24E61 S24E61 S07E31 N13E53 185 ISO POS 014 10830A
-
-
- SUMMARY OF FLARE EVENTS FOR THE PREVIOUS UTC DAY
- ------------------------------------------------
-
- Date Begin Max End Xray Op Region Locn 2695 MHz 8800 MHz 15.4 GHz
- ------ ---- ---- ---- ---- -- ------ ------ --------- --------- ---------
- 10 Apr: 1120 1124 1131 SF 7700 N10E55
- 1228 1231 1237 B1.8
- 1511 1525 1529 B5.8 SF 7700 N11E52
- 1541 1543 1548 SF 7700 N10E52
- 1634 1638 1647 B4.2
- 1935 1939 1941 B2.2 SF 7700 N11E51
- 2109 2112 2117 B1.0 SF 7700 N10E50
-
-
- REGION FLARE STATISTICS FOR THE PREVIOUS UTC DAY
- ------------------------------------------------
-
- C M X S 1 2 3 4 Total (%)
- -- -- -- -- -- -- -- -- --- ------
- Region 7700: 0 0 0 5 0 0 0 0 005 (71.4)
- Uncorrellated: 0 0 0 0 0 0 0 0 002 (28.6)
-
- Total Events: 007 optical and x-ray.
-
-
- EVENTS WITH SWEEPS AND/OR OPTICAL PHENOMENA FOR THE LAST UTC DAY
- ----------------------------------------------------------------
-
- Date Begin Max End Xray Op Region Locn Sweeps/Optical Observations
- ------ ---- ---- ---- ---- -- ------ ------ ---------------------------
- NO EVENTS OBSERVED.
-
- NOTES:
- All times are in Universal Time (UT). Characters preceding begin, max,
- and end times are defined as: B = Before, U = Uncertain, A = After.
- All times associated with x-ray flares (ex. flares which produce
- associated x-ray bursts) refer to the begin, max, and end times of the
- x-rays. Flares which are not associated with x-ray signatures use the
- optical observations to determine the begin, max, and end times.
-
- Acronyms used to identify sweeps and optical phenomena include:
-
- II = Type II Sweep Frequency Event
- III = Type III Sweep
- IV = Type IV Sweep
- V = Type V Sweep
- Continuum = Continuum Radio Event
- Loop = Loop Prominence System,
- Spray = Limb Spray,
- Surge = Bright Limb Surge,
- EPL = Eruptive Prominence on the Limb.
-
-
- ** End of Daily Report **
-
- ------------------------------
-
- End of Info-Hams Digest V94 #418
- ******************************
-