METAR Information for KPMD (PMD) in PALMDALE PROD FLIGHT PLANT, CA, United States (site inactive)

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	For development purposes only Sorry, we have no imagery here. For development purposes only Sorry, we have no imagery here. For development purposes only Sorry, we have no imagery here. For development purposes only Sorry, we have no imagery here. For development purposes only Sorry, we have no imagery here. For development purposes only Sorry, we have no imagery here. KPMD KJ6TAG N6HGA-1 KN6KS GW3110 EW1966 GW4454 WW6RY N3FAA CW5551 KK6KU GW2835 CW1909 EW8682 FW2143 FW2132 FW5488 DW4390 GW1098 N6PJL FW2444 FW9489 EW6409 KC7O EW0585 DW3624 FW4236 CW8508 CW8284 NR6G-6 W6KL DW1871 FW3101 FW7887 DW7923 GW1981 GW2395 DW1271 FW1624 EW1734 EW1845 K6LOT-13 CW6479 GW1944 DW0345 FW8202 DW0529 FW1972 FW0490 FW8620 FW3178 GW0783 FW6046 W6MAF FW8471 EW8187 CW1020 CW0623 GW5410 GW3660 GW5491 CW0464 GW3385 CW6906 FW0577 K7GIL EW8196 EW0094 EW1856 GW3055 KI6KEP KB6LA FW1895 GW0529 FW7664 EW0482 WX6HNX-13 EW1625 FW4319 FW9262 DW5544 GW2993 DW4674 K6FW EW3060 DW3672 DW2363 FW9784 DW0328 CW9736 FW8697 GW5760 FW8698 DW0915 GW5599 EW7239 CW0987 EW3127 N6RSX EW2805 DW2585 To navigate, press the arrow keys. This page can't load Google Maps correctly. Do you own this website? OK
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Registered Location

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'KPMD' marker) will display the latitude/longitude of that point.

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: -- please choose Yes Almost -- can see instruments No -- no instruments to be seen No -- cannot zoom in to see Not sure what instruments look like

The location information for this site was gathered from 16 data sources. This position has been modified based on user feedback. The user provided this information: Found the ASOS array using Google Earth Pro

Show location history.

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

Picture Submission

There are two ways to submit pictures. If you are a flickr user, then see the flickr section below. Otherwise you can simply email the pictures as follows:

• Email the pictures to kpmd@photo.gladstonefamily.net.
• If you use a smartphone that embeds the GPS coordinates in the pictures, then you can send any picture of a weather station to gps@photo.gladstonefamily.net and it will be associated with the correct station automatically.

Flickr Upload

Uploading picktures to flickr.com is easy. If you do not have a free flickr account, then you need to create one. Just go to flickr and click the 'Create your account' button. You can use a google account if you have one.

Once logged in, click on 'Upload Photos & Video'. Next click on 'Choose Photos and Videos', and walk through the process to upload your pictures. They will automatically be resized appropriately.

After the upload is complete, it will ask you to add titles, tags and descriptions. The key step is to add tags as follows:

• wxtagged -- this indicates that this picture is of a weather station or surrounding area
• wx:metar=kpmd -- this indicates the site of which this is a picture
• wxstation -- add this tag if the picture includes the weather station.

If you had to create your account, then you must upload at least five pictures. It will also take longer for your pictures to appear (a week or so). Otherwise, the pictures should appear after 24-48 hours.

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs. (There are some) (There are none) (There may be some) (Automatically loaded if any)

Data Status

Recent observations from this weather station can be downloaded as a CSV file suitable for importing into various spreadsheet programs: last 7 days, last 14 days, last 28 days, last 56 days. This data can also be linked directly from Excel using a Web Query. The main link goes to the page with the data on it, and the IQY link is the Web Query that will access it: last 7 days (IQY: last 7 days), last 14 days (IQY: last 14 days), last 28 days (IQY: last 28 days), last 56 days (IQY: last 56 days).

All the means and standard deviations shown below are from the last 364 days. Change analysis period to Last 3 days  Last 7 days  Last 14 days  Last 4 weeks  Last 8 weeks  Last 13 weeks  Last 26 weeks  Last 39 weeks  

By default, the longer analysis periods display graphs that show the long term performance of this station. The graphs show the mean error over time, and include error bars which are one standard deviation long. This provides an easy way to see if there are any underlying trends in the data. Note that a 'step' in your data does not (necessarily) mean that something happened to your station. It could mean that another station came online in the local area, and they are changing the analysis.

The analysis is performed by MADIS. This web page just provides visualization of the data that MADIS produces. There are a number of very knowledgeable people who participate on the WXQC Mailing List who do understand exactly how MADIS works and can resolve issues when the analysis seems to be broken. However, in most cases, the station readings are at fault, or the software that is transmitting the data to CWOP. Please check those paths first.

You can also see how this station compares with other stations.

Barometer

Average barometer error: -0.2 milliBars Error standard deviation: 0.5 milliBars

MADIS rating

These values are within range, so your sensor is probably calibrated correctly.

Temperature

24 hours   Day time   Night time Average temperature error 0.7 °F -0.1 °F 0.9 °F Error standard deviation 2.7 °F 2.3 °F 2.7 °F NOTE: If the error above is POSITIVE, then it means that the analysis temperature is HIGHER than the reported temperature. This means that your sensor is reading COLDER than expected.

MADIS rating

These values are within the acceptable range. This probably means that your sensor is sited correctly and is calibrated correctly.

Dewpoint -- or switch to Relative Humidity

24 hours   Day time   Night time Average dewpoint error 1.5 °F 2.3 °F 1.2 °F Error standard deviation 3.2 °F 3.2 °F 3.2 °F NOTE: If the error above is POSITIVE, then it means that the analysis temperature is HIGHER than the reported temperature. This means that your sensor is reading COLDER than expected.

MADIS rating

These values are within the acceptable range. This probably means that your sensor is sited correctly and is calibrated correctly.

Wind Vector

The wind vector is the average wind over the relevant period. Note that if the wind blows North for half the time at 2 knots, and then blows South for the other half of the time at 2 knots, then the result is zero -- i.e. North wind and South wind will cancel out. Over time, the direction of the wind and of the analysis should match pretty well. If the lengths of the vector are different, then it could mean either that your anemometer reads high or low, or that you are in a more shielded or more open space.

MADIS rating Sensor fails following checks: L3 Spatial Consistency

Today		Last 7 days

Neighboring Stations

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 2 days out of 364), 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 . For stations covered by your Forecast Office: Los Angeles (LOX) .

The sites marked above thus did not report continuously during the analysis period, so the offsets may (probably will) not be accurate.

Quality Control Notes

The 'MADIS rating' reports on the percentage of observations that pass the MADIS checks. You should aim for two thumbs up!

Location Formats

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

Resources

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.