1959 Annual Typhoon Report/Section 5
SECTION V
INDIVIDUAL TROPICAL CYCLONE DATA
SECTION V
INDIVIDUAL TYPHOON SUMMARIES
Each typhoon will be treated individually. This consists of the life history and characteristics; the Reconnaissance Aircraft Fix data; the Position and Forecast Verification data; and three charts showing Best Track, 12 and 24 hour Verification data.
The heading of the fifth column of each Reconnaissance Aircraft Fix tabulation is "*Unit, Method & Accy." The asterisk was inserted to call attention to the following explanation of the terms used. The first term designates the unit making the fix: "54," "55" or "56"—54th, 55th or 56th Weather Reconnaissance Squadron. "12"—12th Tactical Reconnaissance Squadron. "VW"—Navy early warning aircraft. The second term is the method used to make the fix: "P"—penetration, "R"—radar and "T"—triangulation. The third term is the estimated accuracy of the fix in miles. A double asterisk in Column 5 indicates the fix was made by land-based radar.
Attention is called to the Forecast Verification data. The table is read from left to right with the information corresponding to the date-time group. For example, see the table with Typhoon TILDA 15-1200Z. The 12 hour forecast error, from a forecast made 12 hours previous, is 62 miles on a bearing 300 degrees from the Best Track position 07.6N 146.6E. The 24 hour error made on a forecast 24 hours previous is 95 miles on a bearing of 305 degrees from the same Best Track position. On Typhoons TILDA, BILLIE and ELLEN, the forecasts from the first fix positions were not for a full 12 or 24 hours, and although shown on the charts, the errors were not tabulated.