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I3LGP > PROPAG 18.06.97 04:45l 144 Lines 5345 Bytes #-10618 (0) @ WW
BID : 59418_KA6EYH
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Subj: HF PROPAGATION JUNE 10
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Sent: 970610/0914Z @:KA6EYH.#NCA.CA.USA.NOAM #:59418 [Pacifica CA] FBB7.00c
From: I3LGP@KA6EYH.#NCA.CA.USA.NOAM
To : PROPAG@USA
Bulletin downloaded via anonymous FTP from ftp.sel.noaa.gov
(132.163.224.101)
*--<< I3LGP - University of Padova, Italy >>--*
73 de Giuliano
AX25 : I3LGP@IW3GRX.IVEN.ITA.EU
E-mail: artico@math.unipd.it
WWW : http://www.math.unipd.it/~artico
Prepared jointly by the U.S. Air Force
and the U.S. Dept. of Commerce, NOAA, Space Environment Center
SUBJ: HF RADIO PROPAGATION REPORT
JOINT USAF/NOAA BULLETIN PREPARED BY 55SWXS, FALCON AFB, CO.
PRIMARY HF RADIO PROPAGATION REPORT ISSUED AT 10/0503Z JUN 97.
PART I. SUMMARY 10/0000Z TO 10/0600Z JUN 97.
FORECAST 10/0600Z TO 10/1200Z JUN 97.
QUADRANT
I II III IV
0 TO 90W 90W TO 180 180 TO 90E 90E TO 0
REGION POLAR N5 N5 N5 N5
AURORAL N4 N4 N5 N5
MIDDLE N5 N5 N6 N6
LOW N6 N6 N7 N7
EQUATORIAL N6 N6 N7 N7
PART II. GENERAL DESCRIPTION OF HF RADIO PROPAGATION CONDITIONS
OBSERVED DURING THE 24 HOUR PERIOD ENDING 09/2400Z, AND FORECAST
CONDITIONS FOR THE NEXT 24 HOURS.
A. OBSERVED CONDITIONS: CONDITIONS WERE DEGRADED VERY EARLY IN
THE PERIOD DUE TO GEOMAGNETIC STORMING BUT HAVE SINCE RETURNED TO
NORMAL.
B. FORECAST CONDITIONS: CONDITIONS SHOULD REMAIN NORMAL.
PART III. SUMMARY OF SOLAR FLARE INDUCED IONOSPHERIC DISTURBANCES
WHICH MAY HAVE CAUSED SHORT WAVE FADES IN THE SUNLIT HEMISPHERE
DURING THE 24 HOUR PERIOD ENDING 09/2400Z JUN 97. NONE
PROBABILITY FOR THE NEXT 24 HOURS: NIL
PART IV. OBSERVED/FORECAST 10.7 CM FLUX AND K/AP.
THE OBSERVED 10.7 CM FLUX FOR 09 JUN 97 WAS 073.
THE FORECAST 10.7 CM FLUX FOR 10, 11, AND 12 JUN 97
ARE 074, 074, AND 072.
THE OBSERVED K/AP VALUE FOR 09 JUN 97 WAS 04/33.
THE FORECAST K/AP VALUES FOR 10, 11, AND 12 JUN 97
ARE 03/15, 02/10, AND 02/10.
SATELLITE X-RAY BACKGROUND: A1.5 (1.5 E MINUS 05 ERGS/CM SQ/SEC).
THE EFFECTIVE SUNSPOT NUMBER FOR 09 JUN 97 WAS 23.9
PART V. REMARKS
ISSUED BY THE 55TH SPACE WEATHER SQUADRON, FALCON AFB, CO.
55SWXS HAS A QUICK TURN-AROUND CAPABILITY TO SUPPORT REQUESTS FROM
HIGH FREQUENCY (HF) COMMUNICATORS FOR SPECIFICATIONS AND/OR
FORECASTS OF MAXIMUM USABLE FREQUENCY AND FREQUENCY OF OPTIMUM
TRANSMISSION. IN ADDITION, WE CAN EVALUATE ANOMALOUS ENVIRONMENTAL
CONDITIONS THAT CAN AFFECT DOD ASSETS OPERATING IN AND THROUGH
THE SPACE ENVIRONMENT. FOR SUPPORT, CONTACT THE CREW COMMANDER AT
DSN 560-6313 OR COMMERCIAL (719) 567-6313. QUESTIONS CONCERNING
THE FORMAT OR CONTENT OF THE HFUS1/2 BULLETINS MAY BE DIRECTED
TO THE SPACE ENVIRONMENTAL FORECASTER AT DSN 560-6312 OR
COMMERCIAL (719) 567-6312.
99999
=============================================================================
:Product: 27 Day 10.7 cm. Solar Radio Flux Forecast SRFF.txt
:Issued: 1997 Jun 09 2137 UT
# Prepared by the U.S. Air Force.
# Retransmitted by the Dept. of Commerce, NOAA, Space Environment Center.
# Please send comments and suggestions to sec@sec.noaa.gov
#
#
# 27-Day 10.7 cm Solar Radio Flux Forecast
#-------------------------------------------------------------
27 DAY 10.7 CM SOLAR RADIO FLUX FORECAST PREPARED 09 JUN 97
THE FLUX ON 09 JUN 97 WAS 73. THE 90-DAY MEAN FLUX WAS 74.
10 CM SOLAR RADIO FLUX GRAPH
OBSERVED FLUX VERSUS TIME /L'LAST 27 DAYS/
MAY 13 17 22 27 1 6 8 JUN
. X . . . X . . . . X . . . . X . . . . X . . . . X . X .
86. . . . . . . . . . . . . . . . . . . . . . . . . . . . P10PCT
85. L
84.
83.
82. P
81. L P P
80. L P P P P L P P P P
79. L P P P P P P P P
78. . . . . . . . . . . . L . L . . . . . . . P . . . . . MEAN
77. P L L L L L
76. P L L B B B B B B B
75. P B B B B B B B B L B B L L B
74. L P B B L L B B L L
73. P L L L L L
72.
71. P
70. . . . . . . . . . . . . . . . . . . . . . . . . . . P M10PCT
69.
. X . . . X . . . . X . . . . X . . . . X . . . . X . X .
JUN 10 14 19 24 29 4 6 JUL
PREDICTED FLUX VERSUS TIME /P'PREDICTION B'FBAR/
P20PCT' 94 P10PCT' 86 MEAN ' 78 M10PCT' 70 M20PCT' 62
27 DAYS
DATE FLUX F BAR AGO
10 JUN 73 74 74
11 JUN 74 74 73
12 JUN 75 74 80
13 JUN 76 74 73
14 JUN 77 74 74
15 JUN 71 74 74
16 JUN 80 74 79
17 JUN 80 74 85
18 JUN 79 75 81
19 JUN 80 75 76
20 JUN 80 75 77
21 JUN 81 75 78
22 JUN 81 75 80
23 JUN 82 75 78
24 JUN 80 75 77
25 JUN 80 75 76
26 JUN 79 75 75
27 JUN 80 75 73
28 JUN 79 75 77
29 JUN 79 76 77
30 JUN 79 76 75
1 JUL 78 76 77
2 JUL 79 76 74
3 JUL 79 76 74
4 JUL 79 76 75
5 JUL 80 76 73
99999
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