JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY
SDF NUMBER 230 ISSUED AT 2200Z ON 18 AUG 1997
IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 17/2100Z
TO 18/2100Z: SOLAR ACTIVITY WAS VERY LOW.
IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 17/2100Z TO 18/2100Z:
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV
ELECTRON FLUX WAS MODERATE TO HIGH.
IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET.
III. EVENT PROBABILITIES 19 AUG-21 AUG
CLASS M 01/01/01
CLASS X 01/01/01
PROTON 01/01/01
PCAF GREEN
IV. PENTICTON 10.7 CM FLUX
OBSERVED 18 AUG 076
PREDICTED 19 AUG-21 AUG 074/074/072
90 DAY MEAN 18 AUG 073
V. GEOMAGNETIC A INDICES
OBSERVED AFR/AP 17 AUG 010/009
ESTIMATED AFR/AP 18 AUG 007/006
PREDICTED AFR/AP 19 AUG-21 AUG 005/005-005/010-005/005
VI. GEOMAGNETIC ACTIVITY PROBABILITIES 19 AUG-21 AUG
A. MIDDLE LATITUDES
ACTIVE 15/15/15
MINOR STORM 05/05/05
MAJOR-SEVERE STORM 01/01/01
B. HIGH LATITUDES
ACTIVE 15/15/15
MINOR STORM 05/05/05
MAJOR-SEVERE STORM 01/01/01
JOINT USAF/NOAA SOLAR REGION SUMMARY
SRS NUMBER 231 ISSUED AT 0030Z ON 19 AUG 1997
REPORT COMPILED FROM DATA RECEIVED AT SWO ON 18 AUG
I. REGIONS WITH SUNSPOTS. LOCATIONS VALID AT 18/2400Z
NMBR LOCATION LO AREA Z LL NN MAG TYPE
8073 N14W17 280 0060 HSX 02 01 ALPHA
IA. H-ALPHA PLAGES WITHOUT SPOTS. LOCATIONS VALID AT 18/2400Z AUG
NMBR LOCATION LO
8071 N26W75 338
8074 N27W15 278
8075 N29E05 258
II. REGIONS DUE TO RETURN 19 AUG TO 21 AUG
NMBR LAT LO
NONE
JOINT USAF/NOAA SOLAR AND GEOPHYSICAL ACTIVITY SUMMARY
SGAS NUMBER 231 ISSUED AT 0245Z ON 19 AUG 1997
THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 18 AUG
A. ENERGETIC EVENTS
BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP
2103 2103 2103 110
B. PROTON EVENTS: NONE
C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD WAS QUIET TO
UNSETTLED.
D. STRATWARM: NONE
E. DAILY INDICES:
10 CM 076 SSN 011 AFR/AP 007/006 X-RAY BACKGROUND A2.7
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 3.2E+05 GT 10 MEV 1.8E+04 P/(CM2-STER-DAY)
GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 2.70E+07 E/(CM2-STER-DAY)
GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 2 2 2 2 3 2 1 PLANETARY 1 1 2 2 2 3 2 2
F. COMMENTS: NONE