MesoWest Information for SE569 in SCE Rivera Dr, CA, United States Of America (site inactive)

The following information is known about SE569. 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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SE569
N6PJL
EW0585
DW1871
CW6479
FW0490
FW8471
EW8187
FW4319
GW1944
FW3178
KI6KEP
GW4454
FW7664
GW3660
K7GIL
EW3127
GW0529
GW2993
GW5410
EW3060
FW0494
EW9929
CW8508
FW1895
EW7239
WA6TJQ
GW3055
KB6HGN
K6FW
EW9930
FW8267
CW8284
DW3624
KC7O
FW2444
GW4839
FW4845
EW9934
FW0025
FW6613
DW2585
CW0987
N6AMM
KJ6TAG
KJ6HT
N6HGA-1
GW5965
FW1313
FW9698
FW4558
WX6YYZ
CW3917
DW7923
FW0823
GW5760
FW6602
FW7102
EW3172
EW7942
FW9244
N6RSX
EW9931
W0PE-1
EW6409
DW0490
FW7595
EW6472
DW6637
DW0394
N6DBF
W6FL
FW2143
GW3218
FW0063
FW5488
GW4237
FW2472
W3SN-13
DW4438
EW6473
N6GPM
CW9736
EW3131
FW1624
KN6KS
DW1271
EW9887
AB6OR
FW9733
GW0717
GW3110
EW1966
W6OTO
W6KL
EW1845
DW3672
DW8313
GW2644
EW9869
GW5644
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Registered Location

Latitude: 34° 21' 52" N (deg min sec), 34.3644° (decimal), 3421.86N (LORAN)
Longitude: 117° 38' 24" W (deg min sec), -117.6401° (decimal), 11738.41W (LORAN)
Elevation: 1829 metres (6002 feet) -- validated against 1828 metres (5997 feet) from Geonames
Location: SCE Rivera Dr, CA, United States Of America
County: San Bernardino, CA
Data provider: SC-EDISON
Forecast Offices: Las Vegas (VEF), San Diego (SGX), Phoenix (PSR)

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'SE569' 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:

The location information for this site was gathered from 1 data source. 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.

There are no photographs of the station. If you have pictures of this location, then please email them to se569@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

Over the last 28 days, no data was seen on the following dates: 2025-02-19 to 2025-02-20, 2025-03-03 to 2025-03-16.

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  

Temperature

  24 hours  Day time  Night time
Average temperature error1.0 °F-1.1 °F2.6 °F
Error standard deviation3.0 °F1.8 °F2.8 °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 97% 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 error-0.9 °F0.4 °F-1.9 °F
Error standard deviation2.7 °F2.5 °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 99% 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 100% 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. Since this station has not been reporting continuously during the analysis period (it missed 16 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 . For stations covered by your Forecast Office: Las Vegas (VEF),San Diego (SGX),Phoenix (PSR) .

SiteDistanceLocationBarometerTemperatureDewpoint
FW847114.8 milesSouth Alta Loma, CA, US (lat 34.1517°, long -117.6137°, altitude 563 metres) 13.7°F-20.4°F
EW818715.4 milesSouth Alta Loma, CA, US (lat 34.1420°, long -117.6227°, altitude 529 metres) 14.4°F-20.9°F
GW194417.3 milesSouth LA VERNE, CA, US (lat 34.1318°, long -117.7508°, altitude 486 metres) 15.2°F-21.4°F
GW445418.6 milesWest JUNIPER HILLS, CA, US (lat 34.4522°, long -117.9488°, altitude 1279 metres) 6.8°F-4.3°F
GW366020.4 milesSouth CLAREMONT, CA, US (lat 34.0765°, long -117.7183°, altitude 320 metres) 16.8°F-23.3°F
GW299321.3 milesSouth Ontario, CA, US (lat 34.0568°, long -117.6188°, altitude 292 metres) 15.6°F-22.0°F
CW850823.0 milesSouthwest Duarte, CA, US (lat 34.1517°, long -117.9497°, altitude 237 metres) 14.8°F-24.3°F
GW305524.5 milesSouth Diamond Bar, CA, US (lat 34.0325°, long -117.7892°, altitude 331 metres) 17.2°F-22.8°F
KB6HGN24.7 milesSoutheast Rialto, CA, US (lat 34.0800°, long -117.3797°, altitude 343 metres) 15.5°F-21.2°F
FW826726.2 milesSouth Ontario, CA, US (lat 33.9907°, long -117.5638°, altitude 215 metres) 17.5°F-23.7°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
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