AEROGRAPHER'S MATE 3 & 2 



is operationally significant, even though there 

 is no precedent for the report among the types 

 of remarks for the various weather elements 

 stipulated in FMH No. 1. 



Many types of remarks wore discussed in 

 earlier chapters of this manual. Additional en- 

 tries include coded 3- and 6-hourly additive 

 data, runway visibility, freezing level data, run- 

 way conditions, pilot reports, and weather 

 modification. The order of precedence for re- 

 cording these remarks at Navy stations is as 

 follows: 



1. Runway visibility. 



2. Surface based obscuring phenomena. 



3. Surface or tower visibility. 



4. Wind shifts. 



5. Other remarks elaborating on preceding 

 coded data. 



6. 3- and 6-hourly additive data. 



7. Freezing level data. 



8. Runway conditions. 



9. Weather modification. 



10. Pilot reports of cloud bases and tops. 



A discussion on these remarks would be 

 too lengthy for inclusion in this manual. For 

 greater detail and criteria for entry, refer 

 to FMH No. 1. 



OBSERVER»S INITIALS (COL. 15). — Enter 

 the initials of the certified observer responsi- 

 ble for the observation. 



TIME (COL. 42). — Enter the beginning time 

 of the first 6-hourly observation scheduled after 

 0000 LST in the block captioned MID TO. In 

 the following four blocks, enter the beginning 

 time of each 6-hourly observation. In the time 

 zone where midnight LST corresponds to the 

 time of a 6-hourly observation, omit all en- 

 tries on the lines marked MID TO and MID. 

 Make all entries in four figures to the near- 

 est minute LST. 



NUMBER (COL. 43). — This column is num- 

 bered from 1 through 4. The significance of 

 this column is that an observer can tell at 

 a glance the number of each 6-hourly observa- 

 tion taken during an LST day. 



REMARKS, NOTES, AND MISCELLANEOUS 

 PHENOMENA (COL. 90). — In this column, re- 

 cord all data considered significant, but not 

 recorded elsewhere. All times of occurrence 



will be in LST unless otherwise specified. Some 

 of the possible entries are as follows: 



1. Conditions which affect the accuracy of 

 recorded data. 



2. Outages, changes in instruments, reasons 

 for change, and times of change or outage. 



3. Reasons for omission of mandatory data 

 entries. 



4. Time checks of station clock if not in- 

 dicated elsewhere. 



5. Change in hours of station operation, ef- 

 fective dates if temporary, or date if change 

 Is permanent. 



6. Miscellaneous items, such as aircraft 

 accident data. 



7. Hailstorm information. 



8. Harbor ice information. 



Others Entries on NWSC Form 3140/8 



As with MF1-10, the major elements were 

 discussed in previous chapters; however, there 

 are many other entries made on NWSC form 

 3140/8 that are not similar to MF1-10. The 

 following paragraphs will approach marine ob- 

 servations by discussing these various differ- 

 ences. 



POSITION. — Enter coded digits in the sym- 

 bolic form Q C LL111. These symbols have the 

 following meaning: 



Qc — Quadrant of the globe in accordance 

 with the table provided in FMH No. 2, Synoptic 

 Code. 



LL — Latitude to the nearest whole degree 

 (e.g., enter 8° 22' as 08). 



Ill — Longitude to the nearest whole degree, 

 omitting the hundreds digit (e.g., enter 145° 36' 

 as 146). 



The symbol "Q c " is common to many mete- 

 orological codes utilizing latitude and longitude 

 to locate a station or a meteorological element. 



COURSE. — Enter the true compass course 

 to the nearest whole degree. Enter a dash 

 when the ship is not underway. 



SHIP'S SPEED. — Enter the ship's speed to 

 the nearest whole knot. Enter a dash when the 

 ship Is not underway. 



TIME. — Enter the time (24-hour clock) to 

 4 figures GMT. Actual times are used for all 

 observations (i.e., the time the last entry is 



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