# Metar Decoding

#### JustinA

##### Well-Known Member
I remember a thread a few months back that explained the last 3 groups of numbers. I tried to find it but I was unsuccessful. Can anybody explain these numbers in detail or lead me to that thread?

Thanks.

KBKV 091753Z AUTO 18003KT 10SM SCT045 33/22 A3004 RMK AO2 SLP169 T03330217 10344 20244 58021

I remember a thread a few months back that explained the last 3 groups of numbers. I tried to find it but I was unsuccessful. Can anybody explain these numbers in detail or lead me to that thread?

Thanks.

KBKV 091753Z AUTO 18003KT 10SM SCT045 33/22 A3004 RMK AO2 SLP169 T03330217 10344 20244 58021

The first set of 5 digits is the 6-hour maximum temperature (10344) Here's the breakdown

1= Group indicator (6-hour maximum temperature)
0= 1 indicating below 0 degree c 0 indicating 0 degree c or higher
344= Maximum temperature in tenths degree c (34.4 degrees c)

The second set of numbers is the 6-hour mimimum temperature (20244) Here's the breakdown.

2= Group indicator (6-hour mimimum temperature)
0= 1 indicating below 0 degree c 0 indicating 0 degree c or higher.
244= Minimum temperature in tenths degree c (24.4 degrees c)

The third set of numbers is the pressure tendancy (58021). Here's the break down.

5= Group indicator (3-hourly pressue tendancy)
8= Character of pressure change over the last 3 hours. (Atmospheric pressure is now lower than 3 hours ago)
021= amount of barometric change. (2.1 hectopascals)

Hope this helps.

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