.TH Command WEATHER
.SY "weather <SECTS>"
The weather command prints out a weather map of a specified area.
.s3
For each sector in a weather map an integer indicates the
local barometric pressure.
Negative integers show low-pressure sectors, ("bad" weather),
and positive integers show high-pressure sectors ("good" weather).
A barometric pressure of 760 mm. of mercury is considered
"normal" at sea level in Empire.
.s3
A map gives you an instantaneous picture of the current pressure
centers, (for weather prediction you must build a weather
station).
.s1
A typical example might be:
.EX weather -10:20,-5:10
.NF
     1---------000000000011111111112
     0987654321012345678901234567890
 -5  -3-4-5-6-6-8-8-8-6-6-4-3-3-2-2  -5
 -4 -3-3-4-5-6-8-9-9-8-6-4-3-3-2-2-2 -4
 -3  -3-4-5-6-8-9-9-9-8-6-4-3-3-2-2  -3
 -2 -3-3-4-5-6-8-9-9-8-6-4-3-3-2-2-1 -2
 -1  -3-4-5-6-6-8-8-8-6-6-4-3-3-2-2  -1
  0 -3-3-4-4-4-6-6-6-6-4-4-3-2-2-2-1 0
  1  -3-3-4-3-4-4-6-4-4-3-3-2-2-1-1  1
  2 -2-3-3-3-3-3-4-4-3-3-2-2-1-1-1-1 2
  3  -2-2-2-3-3-3-3-3-2-2-1-1-1-1 0  3
  4 -2-2-2-2-2-3-3-2-2-2-1-1-1 0 0 0 4
  5  -2-2-2-2-2-2-2-2-1-1-1 0 0 0 0  5
  6 -2-1-2-2-2-2-2-1-1-1-1 0 0 0 0 0 6
  7  -1-1-1-1-1-1-1-1-1 0 0 0 0 0 1  7
  8 -1-1-1-1-1-1-1-1 0 0 0 0 0 1 1 1 8
  9  -1-1-1-1-1-1-1 0 0 0 0 0 1 3 3  9
 10 -1-1-1-1-1-1-1 0 0 0 0 0 1 3 5 5 10
     1---------000000000011111111112
     0987654321012345678901234567890
extreme low pressure center at 3,-3; extreme high at 21,12
.FI
.s3
(Historical note: this weather map was taken during the great storm of '77
right after two battleships sank off the coast of East Eden at 5,-3.)
.s1
The correllation between weather map integers and the barometric pressure
(in mm. of mercury) is as follows:
.NF
map         average
code        pressure
----        --------
 -9          < 658
 -7           676
 -5           700
 -3           725
 -1           748
 0            760
 1            772
 3            796
 5            820
 7            844
 9            868
.FI
.s3
See also : forecast
