V. Synoptic Encoding

Section 1 Reporting, Part 1

Section 1 Reporting, Part 1

Let's encode the 1753Z Kearsarge observations into the Synoptic code area of your form beginning with Section 1.

Encode the following precipitation and weather data indicators, as well as the height of the lowest cloud and the visibility in the appropriate boxes below:

  • Present weather: overcast conditions with occasional light rain showers at the ship.
  • Sky Condition: ⅞ sky cover stratocumulus with ceilings about 600 feet; 1/8 sky cover, altostratus 11,000 ft.
  • Visibilities: restricted due to low clouds (2/8 nm).
  • Previous observations: occasional rain showers observed within last 6 hours, sky cover broken to overcast.

Use the Resource Tables or the information in the tabs below to find the appropriate codes.

Type your answer in the boxes, then click Done.

precipitation data indicator (iR):
 weather data indicator (iX):
 height of lowest cloud (h):
 visibility (vv):

The correct encodings are:

precipitation data indicator (iR)
4		 weather data indicator (iX)
1		 height of lowest cloud (h)
2		 visibility (vv)
93

 

Present/Past weather

Table III-3-1 Inclusion of Present/Past Weather Data

Code figure Group 7wwW1W2 is
0 Included
1 Not included
2 Omitted, not observed or data not available

 

Horizontal Visibility at Surface

Table III-3-3 Horizontal Visibility at Surface

Code figure Nautical miles
90 Less than 1/16
91 1/16
92 1/8
93 1/4
94 1/2
95 1 or 1 1/2
96 2, 2 1/2, or 3
97 5, 6, 7, or 8
98 9 or 10
99 Not reported

 

Lowest Cloud Layer Height

Table III-3-2 Height above Ground of Base of Lowest Cloud Layer
Code figure Feet Meters
0 00 to 99 00 to 49
1 100 to 299 50 to 99
2 300 to 699 100 to 199
3 700 to 999 200 to 299
4 1000 to 1999 300 to 599
5 2000 to 3299 600 to 999
6 3300 to 489 1000 to 1499
7 4900 to 6499 1500 to 1999
8 6500 to 7999 2000 to 2499
9 8000 or above, or no clouds 2500 or above, or no clouds
/ Height not known Height not known