Metar Question

Malko

Malko

Why…..? It’s so tiring. 🤙
Staff member
Now I get most of this but the '1/9' & '4/009'?????

KMSP 160553Z 06007KT 1/2SM R30L/6000VP6000FT -SN BR VV004 M04/M05 A3013 RMK AO2 SFC VIS 3/4 SLP215 SNINCR 1/9 4/009 P0005 60009 T10391050 11028 21039 410281122 58012

snow increasing......is that the rate of increase?
 
It means there is more to life than flying airplanes :)

Get out and do something different that day... Time to go to the movies, or something besides flying.
 
Timbuff10 said:
It means there is more to life than flying airplanes :)

Get out and do something different that day... Time to go to the movies, or something besides flying.
Click to expand...

Exactly...That's why I am at work and have JC running in the background. :D

Little snow al winter in MSP and now the second storm in 3 days.....They better not cancel school again.....:mad:
 
All that stuff has to do with, type of precip, depth on surface of runways, and coefficient of braking action. Followed by some trends in Pressure, and surface visibilities, as opposed to tower vis, since you can't see crap through the snow, and freezing mist.
 
Dude, I really had to pull the books for this one. I hope this helps.
KMSP 160553Z 06007KT 1/2SM R30L/6000VP6000FT -SN BR VV004 M04/M05 A3013 RMK AO2 SFC VIS 3/4 SLP215 SNINCR 1/9 4/009 P0005 60009 T10391050 11028 21039 410281122 58012
Click to expand...
KMSP - Minneapolis St. Paul International
Time - 0553 Zulu, 16th day of the month
Wind - 060 (true north) at 7 knots
Visibility - 1/2 Statue mile visibility
Runway Visual Range - Runway 30L / 6000 ft visibility, varying to a visibility beyond 6000 ft (which is the max visibility figure reportable by the equipment)
Precipitation - Light Snow in mist
Sky condition - 400 ft AGL vertical visibility (indefinite ceiling)
Temperature - -4 degrees
Dewpoint - -5 degrees
Altimeter - 30.13" Hg

Remarks - Automated observation with precipitation discriminator
Surface visibility 3/4 of a mile
Sea Level Pressure 1021.5 hectopascals (Hp)
Snow increasing rapidly 1 inch per hour / 9 inches on
ground. At 0600 UTC the snow depth on ground is 9
inches.
Notice that the time on metar is 0553 and not 0600. However, the report
of snow depth on ground is given for the 0600 UTC group which is one of
the four: 0000, 0600, 1200, 1800 UTC.
Hourly precipitation since last metar .05 (5/100) of an inch
6 hour precipitation amount is .09 (9/100) of an inch
If the 6 was preceded by the letter I, then the code is read as 6 hour ice
accretion amount.
Temperature is –3.9 degrees Celsius
Dewpoint is –5.0 degrees Celsius
Max hourly temp is –2.8 degrees
Min hourly temp is –3.9 degrees
24 hour max and min temperature is –2.8 and -12.2
Pressure tendency in the last 3 hours is steady or increasing, then
decreasing 1.2 Hp

​
The references for this explanation are the FAR/AIM, Aviation Weather Services (AC 00-45E), and the Surface Weather Observing Manual (Order 7900.5B). All are available in the FAA’s website.

One clarification: It is not just a bunch of numbers as many pilots seem to think. This data is there to provide the pilot with information before he/she attempts to move, take-off, or land on the surface of the reporting station. Granted, decoding something like this is complicated unless the pilot does it on a regular basis. Glad to help:)

Luis
 
Awesome decode! Remind me not to poke fun at you tailwheel types anymore. :)
 
the Surface Weather Observer's Manual is many many many pages long, but the Chapter 15, "CODING AND DISSEMINATIONS" is only about 20.. its easy to print out just that section is and pretty helpful.
 
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