CWOP Information for EW9437 (E9437) in Poway East, CA, US

The following information is known about EW9437. 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.

For development purposes only
Sorry, we have no imagery here.
For development purposes only
Sorry, we have no imagery here.
EW9437
EW3759
DW1910
EW3241
GW5788
EW5989
WB6EDK-1
EW3333
EW9622
EW2652
FW0958
CW9761
FW4601
GW1405
FW4645
KG6MOZ
DW4679
DW2868
KD6RSQ
GW4349
CW8688
FW2603
GW2085
EW3309
GW3177
DW9888
EW1483
FW8337
EW3619
GW0429
EW3236
FW5196
EW6576
EW5516
W6NWF
CW2735
GW2467
FW8166
EW6321
EW9965
FW8334
CW3287
GW1614
KI6AOK
FW0775
CW8703
EW4858
DW4064
GW1622
EW9957
EW9978
DW3101
FW8084
CW9939
EW9975
K6SKM
KE6BZI
DW5683
GW5366
CW7369
DW5256
EW4521
GW5206
FW0381
GW1804
DW3640
FW4672
EW3170
FW1128
GW3482
CW2462
DW2370
GW4747
FW8273
GW3826
EW3263
EW3680
GW3667
GW5281
FW6209
FW7485
FW6664
EW3070
EW4462
GW0974
EW9873
EW8360
FW5316
EW8057
GW4456
GW2992
GW4424
FW6626
GW5000
FW0495
EW3055
FW8607
EW4618
AF6GL
FW8272
Google
Image may be subject to copyright
This page can't load Google Maps correctly.
Do you own this website?
  Larger  Smaller  Google Earth.

Registered Location

Latitude: 32° 59' 33" N (deg min sec), 32.9925° (decimal), 3259.55N (LORAN)
Longitude: 117° 0' 38" W (deg min sec), -117.0107° (decimal), 11700.64W (LORAN)
Elevation: 391 metres (1284 feet) -- validated against 385 metres (1263 feet) from Geonames
Location: Poway East, CA, US
County: San Diego, CA
Forecast Office: San Diego (SGX)
Weather station Manager/Operator: Jim
Station type/software: Davis Vantage Pro 2 Plus with Weatherlink-IP

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'EW9437' 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.

NOTE: The Registered Location is the location that the station owner provided when they signed up with CWOP. Show location history.

There are no photographs of the station. If you are the site operator and have pictures of this location, then please email them to e9437@photo.gladstonefamily.net.

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs. (There are none)

Data Status

Data has been seen on each of the last 26 analyzed days.

The last 24 hours of weather data can be viewed at Findu. This page also provides access to the raw APRS packets and various other APRS related tools.

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 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  

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.

A recently received weather report from this station was

Analyze: EW9437>APRS,TCPXX*,qAX,CWOP-3:@062145z3259.55N/11700.64W_209/009g015t053r000p033P003h66b10137L306.DsIP

Barometer

Average barometer error: 0.3 milliBars
Error standard deviation: 0.5 milliBars

 
MADIS
rating
MADIS rating 100% QC OK
 

Latest daily graph:

Latest daily graph

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

Temperature

  24 hours  Day time  Night time
Average temperature error-2.2 °F-2.0 °F-2.4 °F
Error standard deviation2.4 °F2.3 °F2.4 °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
MADIS rating 96% QC OK
 

Latest daily graph:

Latest daily graph

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 error0.7 °F-0.9 °F1.7 °F
Error standard deviation3.0 °F2.7 °F2.9 °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
MADIS rating 98% QC OK
 

Latest daily graph:

Latest daily graph

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
MADIS rating 91% QC OK
TodayLast 7 days
Wind vector chartWind vector chart for last 7 days

Neighboring Stations

This is a list of stations that are close to this station. Note that this is not the list of stations that are used in the data analysis. That list of stations is known only to MADIS. You can see all the stations at MADIS Data Display. Your station should be in the middle of the display. If you think that the analysis is incorrect, then maybe one of the close stations has failed.

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.

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: San Diego (SGX) .

SiteDistanceLocationBarometerTemperatureDewpoint
EW32412.3 milesSouth Poway, CA, US (lat 32.9605°, long -117.0192°, altitude 178 metres) -1.1mb5.5°F-1.5°F
GW57882.5 milesWest POWAY, CA, US (lat 32.9935°, long -117.0538°, altitude 208 metres) -1.0mb5.5°F-0.5°F
EW59894.0 milesWest San Diego, CA, US (lat 33.0018°, long -117.0793°, altitude 242 metres) 0.4mb4.8°F-1.8°F
WB6EDK-14.4 milesEast Ramona, CA, US (lat 33.0140°, long -116.9400°, altitude 484 metres) -0.2mb-3.5°F1.0°F
FW09584.8 milesNorthwest San Diego, CA, US (lat 33.0442°, long -117.0663°, altitude 147 metres) 0.3mb5.3°F-3.1°F
FW46015.4 milesSouthwest Scripps Ranch, CA, US (lat 32.9257°, long -117.0582°, altitude 231 metres) -0.1mb3.3°F-2.8°F
FW46456.4 milesSouthwest San Diego, CA, US (lat 32.9120°, long -117.0640°, altitude 256 metres) 1.3mb4.2°F-1.0°F
DW28686.7 milesWest San Diego, CA, US (lat 33.0268°, long -117.1180°, altitude 156 metres) 0.2mb5.2°F-2.5°F
GW20858.5 milesNorth ESCONDIDO, CA, US (lat 33.1085°, long -117.0565°, altitude 219 metres) 0.2mb6.0°F0.6°F
EW33099.0 milesSouth Santee, CA, US (lat 32.8625°, long -117.0020°, altitude 153 metres) 0.8mb5.2°F-1.9°F

Quality Control Notes

This page reports on the quality control checks performed by MADIS. The green check mark and red cross are chosen based on the average performance during the analysis period (which is selectable above). The red cross can appear even if MADIS reports that all observations pass the MADIS QC checks.

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

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

Resources

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
Questions for this weather station owner/operator to Jim
This page is one of 106203 similar pages. This one was generated in 0.64 seconds.
BESbswy
BESbswy