MesoWest Information for WWWAN in Chico-North (Wanink), CA, United States Of America (site inactive)

The following information is known about WWWAN. 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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WWWAN
DW7004
EW3006
FW6285
EW9574
N6RZR-2
GW2618
EW3651
EW7114
EW6355
K6TTR
FW9018
EW2457
GW1961
DW7902
GW0802
EW9947
WA7JAY
K9JM
GW1312
FW1915
GW2629
FW0355
FW5165
DW9434
GW1055
CW6842
EW4877
FW5970
FW5669
GW0714
EW4771
FW3933
GW3614
K6ALF
CW3111
DW8862
GW4338
N6ZQK
KE6OBI
KM6WRX
GW0434
FW6859
DW8561
FW8683
FW9048
EW9372
GW0346
DW2000
EW0674
GW5530
EW9060
GW2953
EW1867
CW5671
EW4393
GW5406
GW3773
CW9181
EW6476
GW4012
DW6835
GW5432
FW9603
GW1516
FW5892
DW5348
KI6PPU
N6OIM
GW0959
GW5949
DW9558
EW4740
DW7413
FW5459
DW7401
CW9576
DW4464
FW0079
FW6155
FW0165
FW9070
KF6GTX
GW4188
EW5691
CW0443
CW6129
DW9436
EW4496
EW9523
FW4472
GW5419
FW0443
EW4543
K6MLE
CW5121
EW7886
EW8856
DW9019
EW4371
EW3235
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Registered Location

Latitude: 39° 46' 36" N (deg min sec), 39.7766° (decimal), 3946.60N (LORAN)
Longitude: 121° 49' 53" W (deg min sec), -121.8315° (decimal), 12149.89W (LORAN)
Elevation: 63 metres (208 feet) -- validated against 65 metres (213 feet) from Geonames
Location: Chico-North (Wanink), CA, United States Of America
County: Butte, CA
Data provider: MISC
Forecast Office: Sacramento (STO)

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

There are no photographs of the station. If you have pictures of this location, then please email them to wwwan@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: 2025-02-17 to 2025-02-20, 2025-03-03 to 2025-03-15.

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 error1.8 °F0.3 °F2.9 °F
Error standard deviation2.1 °F1.5 °F1.7 °F
Worst average temperature error2.6 °F-1.2 °F4.1 °F
Worst standard deviation2.5 °F1.7 °F2.7 °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
MADIS rating 99% QC OK
 

Latest daily graph:

Latest daily graph

It appears that your station is sited in a location where cool air collects at night. This is often near the bottom of a valley. The cool nighttime readings are probably correct, and the analysis values are not taking into account the local topography.

Dewpoint -- or switch to Relative Humidity

  24 hours  Day time  Night time
Average dewpoint error-0.7 °F-0.6 °F-0.7 °F
Error standard deviation1.7 °F1.7 °F1.6 °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 100% 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 17 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: Sacramento (STO) .

SiteDistanceLocationBarometerTemperatureDewpoint
DW70041.4 milesSouthwest Chico, CA, US (lat 39.7675°, long -121.8543°, altitude 58 metres) 3.9°F2.3°F
FW628524.1 milesSoutheast Oroville, CA, US (lat 39.4952°, long -121.5647°, altitude 46 metres) 2.3°F2.7°F
N6RZR-250.8 milesNorthwest Anderson, CA, US (lat 40.4403°, long -122.2433°, altitude 119 metres) 5.8°F3.9°F
GW261851.5 milesSoutheast Nevada City, CA, US (lat 39.2790°, long -121.1127°, altitude 670 metres) -2.1°F6.6°F
EW365151.7 milesSoutheast Nevada City, CA, US (lat 39.3380°, long -121.0475°, altitude 780 metres) -1.4°F9.3°F
FW901854.8 milesSoutheast Grass Valley, CA, US (lat 39.2269°, long -121.0932°, altitude 694 metres) -0.5°F7.8°F
DW790257.0 milesSoutheast Wheatland, CA, US (lat 39.0158°, long -121.4225°, altitude 26 metres) 4.4°F0.6°F
GW262964.2 milesNorthwest Redding, CA, US (lat 40.5957°, long -122.4040°, altitude 155 metres) 4.3°F5.3°F
GW105567.4 milesSoutheast Auburn, CA, US (lat 38.9458°, long -121.1732°, altitude 866 metres) -10.3°F2.9°F
EW487768.2 milesSoutheast Lincoln, CA, US (lat 38.8868°, long -121.2827°, altitude 52 metres) 4.5°F2.2°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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