Synop Information for GMSL (60136) in Sidi Slimane Airport, Morocco

The following information is known about GMSL. If you think that any information is incorrect, then please follow the instructions for correcting that data item.

It is possible that this page will report a problem where no problem exists. If you believe that this has happened, then please contact me (address at the bottom of this page) and explain clearly why you think this page is in error. Note that any changes that you make may take a few days to show up here, so please give it a week before commenting.

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Registered Location

Latitude: 34° 13' 58" N (deg min sec), 34.2328° (decimal), 3413.97N (LORAN)
Longitude: 6° 3' 17" W (deg min sec), -6.0547° (decimal), 00603.28W (LORAN)
Elevation: 52 metres (171 feet) -- validated against 52 metres (170 feet) from Google
WMO Id: 60136
Location: Sidi Slimane Airport, Morocco

If the displayed location (or elevation) of the weather observing location is incorrect, please drag the marker to the right location (or click in the right location), and then send the updated information. Please note that we are trying to spot either the Stevenson Screen (or equivalent) or the location where the barometric readings are taken.

Can you help with location quality? Please indicate if the marker on the map points at the weather instrument cluster:

The location information for this site was gathered from 7 data sources. The source which most closely matches the consensus is chosen. Many of these sources only report the location to the nearest minute (or hundredth of degree). This can lead to the marker being placed noticeably incorrectly. Please see Discussion of Location Errors for more information. Show location history.

Master Location Identifier DB34.2328-6.054752Sidi Slimane, 2, Morocco [60136]0.0Center 
Master Location Identifier DB34.2328-6.054752Sidi Slimane, 2, Morocco [GMSL]0.0CenterInclude
WMO34.2328-6.054752Sidi Slimane, Morocco [60136]0.0CenterInclude
FMI34.23-6.0552Sidi Slimane, Morocco [60136]0.3CenterInclude
FMI34.23-6.0552Sidi Slimane, Morocco [GMSL]0.3CenterInclude
ISH34.23-6.0550Sidi Slimane, Mongolia [GMSL]0.3CenterInclude
ISH34.23-6.0550Sidi Slimane, Mongolia [60136]0.3CenterInclude
OurAirports34.2306-6.050154Sidi Slimane Airport, Morocco [GMSL]0.3CenterInclude
DAFIF ARPT34.2306-6.050154Sidi Slimane [GMSL]0.3CenterInclude
RAP stations34.22-6.0352Sidi Slimane, MA [60136]1.7CenterInclude
RAP stations34.22-6.0352Sidi Slimane, MA [GMSL]1.7CenterInclude

There are no photographs of the station. If you have pictures of this location, then please email them to

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs.

Data Status

Over the last 28 days, no data was seen on the following dates: 2021-05-17 to 2021-06-11.

All the means and standard deviations shown below are from the last 28 days. Change analysis period to Last 3 days  Last 7 days  Last 14 days  Last 8 weeks  Last 13 weeks  Last 26 weeks  Last 39 weeks  Last 52 weeks  

A recently received weather report from this station was

Neighboring Stations

This is a list of stations that are close to this station. You can look at those for comparison purposes. The average difference between your station and each station below is listed as well. This may allow you to detect local stations which are erroneous. You can also use these numbers to adjust your instruments -- especially if a number of ASOS stations have similar differences to your station. Also, try increasing the analysis period to more than the default 28 days. The difference is only given if both stations report reasonably often during each day. Some stations only report every 6 hours, and this makes the average of less interest. In this case, the average is not displayed. The values reported are the differences between this station and the neighboring station. I.e. if the difference is positive, then this station is reading higher than the neighboring station. Since this station has not been reporting continuously during the analysis period (it missed 26 days out of 28), the offsets below may not be accurate.

You can also subscribe to an RSS feed to tell you when new stations come online in this area. Choose either within 100 miles or 250 miles .

GMFM39.4 milesSoutheast Meknes, Morocco (lat 33.8791°, long -5.5151°, altitude 576 metres)
GMME41.8 milesWest Rabat-Sale, Morocco (lat 34.0515°, long -6.7515°, altitude 84 metres)
6010564.4 milesNorth Larache, 01, Morocco (lat 35.1628°, long -6.1164°, altitude 66 metres)
GMFF65.2 milesEast Fes-Sais, Morocco (lat 33.9328°, long -4.9750°, altitude 579 metres)
6010677.5 milesNortheast Chefchaouen, 01, Morocco (lat 35.1725°, long -5.3131°, altitude 287 metres)
GMMB78.0 milesSouthwest Ben Slimane|Benslimane, 9, Morocco (lat 33.6554°, long -7.2215°, altitude 191 metres)
GMTN103.0 milesNortheast Tetuan / Sania Ramel, Morocco (lat 35.5943°, long -5.3200°, altitude 10 metres)
GMMC103.3 milesSouthwest Casablanca, Morocco (lat 33.5570°, long -7.6600°, altitude 62 metres)
GMTT103.6 milesNorth Tanger Aerodrome , Morocco (lat 35.7269°, long -5.9169°, altitude 18 metres)
GMMN106.6 milesSouthwest Nouasseur, Morocco (lat 33.3675°, long -7.5900°, altitude 206 metres)

Location Formats

The location is shown in three different formats. Each of these is used in some software, and is shown on some websites.

Degrees Minutes Seconds: VWS/VWSAPRS, WeatherLink 5.5, WeatherLink (5.2-5.4), WeatherView (Linux)

Decimal degrees: FreeWX, WeatherView32 (PC application)

LORAN: WeatherDisplay, WUHU, Henriksen WServer


CWOP Home: This describes the whole CWOP program and has a large amount of useful information.

CWOP Siting Guide (PDF): This is a guide to siting and operating a CWOP station. This is a must-read document.

Another CWOP Guide (PDF): This is another guide to siting and operating a CWOP station. This is a must-read document.

Urban Siting and Operations (PDF): This is a guide to siting and operating a CWOP station in an urban environment.

APRS WX Message format: This describes the actual format of the messages transmitted that carry WX information.

WXQC Mailing List: This is a mailing list where data quality issues are discussed. Assistance with software configuration can often be found here.

Topo Map Reading Guide: How to read USGS topographic maps, with a good section on reading contours.

Geographically nearby web pages: Use Geourl to find web pages that deal with locations geographically close to this site.

Overall website comments, problems etc to Philip Gladstone
Page layout last modified Sunday, 28 February 2016
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