:Product: High Frequency Radio Propagation  HFRP.txt
:Issued: 1998 Dec 02 0514 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
#
#
#       Latest High Frequency Radio Propagation Report
#-------------------------------------------------------------
SUBJ: HF RADIO PROPAGATION REPORT
JOINT USAF/NOAA BULLETIN PREPARED BY 55SWXS, SCHRIEVER AFB, CO.
PRIMARY HF RADIO PROPAGATION REPORT ISSUED AT 02/0502Z DEC 98.
PART I. SUMMARY  02/0000Z TO 02/0600Z DEC 98
        FORECAST 02/0600Z TO 02/1200Z DEC 98.
                                  QUADRANT
                        I         II         III         IV
                   0 TO 90W  90W TO 180  180 TO 90E  90E TO 0
REGION     POLAR     N4          N4          N5          N5
         AURORAL     N4          N4          N5          N5
          MIDDLE     N5          N5          N6          N6
             LOW     N6          N6          N7          N7
      EQUATORIAL     N7          N7          N7          N7
PART II.  GENERAL DESCRIPTION OF HF RADIO PROPAGATION CONDITIONS
OBSERVED DURING THE 24 HOUR PERIOD ENDING 01/2400Z, AND FORECAST
CONDITIONS FOR THE NEXT 24 HOURS.
A.  OBSERVED CONDITIONS: CONDITIONS HAVE BEEN NORMAL.

B.  FORECAST CONDITIONS: REMAIN NEAR 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 01/2400Z DEC 98.
  NONE
PROBABILITY FOR THE NEXT 24 HOURS:  MODERATE
PART IV. OBSERVED/FORECAST 10.7 CM FLUX AND K/AP.
THE OBSERVED 10.7 CM FLUX FOR 01 DEC 98 WAS 163.
THE FORECAST 10.7 CM FLUX FOR 02, 03, AND 04 DEC 98
ARE 162, 160, AND 160.
THE OBSERVED K/AP VALUE FOR 01 DEC 98 WAS 02/09.
THE FORECAST K/AP VALUES FOR 02, 03, AND 04 DEC 98
ARE 03/12, 03/10, AND 03/10.
SATELLITE X-RAY BACKGROUND: B7.5 (7.5 E MINUS 04 ERGS/CM SQ/SEC).
THE EFFECTIVE SUNSPOT NUMBER FOR 01 DEC 98 WAS 81.5
PART V.  REMARKS
ISSUED BY THE 55TH SPACE WEATHER SQUADRON, SCHRIEVER 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.
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