User:Ssbohio/Surface weather observation

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Data Reported[edit]

Surface weather observations can include the following elements:

Example of a METAR surface weather observation[edit]

METAR LBBG 041600Z 12003MPS 310V290 1400 R04/P1500N R22/P1500U +SN BKN022 OVC050 M04/M07 Q1020 NOSIG 9949//91=
KPGD 122353Z AUTO 27009KT 10SM CLR 18/13 A3001 RMK AO2 SLP163 T01830128 10256 20183 53008
[1]
Station     Date/Time  Automatic    
Identifier  (UTC)      Observation  
KPGD  122353Z  AUTO 27009KT 10SM CLR 18/13 A3001 RMK AO2 SLP163 T01830128 10256 20183 53008


RMK Remarks AO2 Barometric pressure has risen 0.02 (in. Hg) since the last hour's observation SLP163 T01830128 10256 20183 53008

METAR codes and their meanings
Code Meaning Description
KPGD Charlotte County Airport ICAO airport code for the observing location
122353Z 12th of the month; 2353 or 11:53PM Date and time given as (UTC)
AUTO Automatic weather station Identifies the station as unmanned and offering limited information
27009KT 270° (West) at 9 Knots (KT) Wind direction (given as true heading) and wind speed, optionally followed by gust speed
10SM 10 statute miles (SM) Visibility; 10SM is the maximum for ASOS
CLR Clear Current weather (CLeaR); See table below for meanings
18/13 18°C / 13°C Temperature and dew point in degrees Celsius
A3001 30.01 inches of mercury (in. Hg) Altimeter setting; Barometric pressure adjusted for airport elevation above mean sea level
METAR remark codes and their meanings
Code Meaning Description
AO2 Yes Can this automated weather station discriminate among the types of precipitation?
SLP163 16.3 hPa Sea-level barometric pressure
T01830128 18.3°C / 12.8°C Temperature and dew point to the nearest tenth of a degree Celsius
10256 25.6°C Highest temperature in the last six hours to the nearest tenth of a degree Celsius
20183 18.3°C Lowest temperature in the last six hours to the nearest tenth of a degree Celsius
53008 increasing, 00.8 hPa Character and amount of change in pressure in tenths of hPa for the past 3 hours
METAR prevailing weather codes and their meanings
Code Meaning
Precipitation phenomena
DZ Drizzle
GR Hail
GS Small hail/snow pellets
IC Ice crystals
PL Ice pellets
RA Rain
SG Snow grains
SN Snow
UP Unknown precipitation in automated observations
Obscuration phenomena
Qualifier: Intensity or proximity
- Light
(no sign) Moderate
+ Heavy
VC Weather occurring in the vicinity (5 - 10 SM away), but not at airport.
Descriptor: Quality or character
BC Patches
BL Blowing
DR Drifting
FZ Freezing
MI Shallow
PR Partial
SH Showers
TS Thunderstorm

KPGD Station Identifier: KPGD is the ICAO code for the Charlotte County Airport 122353Z Date: 12th day of the month; Time 2353 or 11:53PM (UTC) AUTO [ASOS|Automatic]] or manual observation 27009KT Wind direction, given as true heading: 270° (West); Speed: 9 Knots (KT) 10SM Visibility in statute miles (SM); 10SM is the maximum for ASOS CLR Weather is clear (CLR) 18/13 Temperature: 18°; Dew point 13°Celsius A3001 Barometric pressure is 30.01 inches of mercury (in. Hg) RMK Remarks AO2 Barometric pressure has risen 0.02 (in. Hg) since the last hour's observation SLP163 T01830128 10256 20183 53008





Personal weather stations, maintained by citizens rather than government officials, do not use METAR code. Software allows information to be transmitted to various sites, such as Weather Underground globally,[2] or CWOP within the United States,[3] which can then be used by the appropriate meteorological organizations either to diagnose real-time conditions, or be used within weather forecast models.