MesoWest Information for J55AX in J55A Hilton, NY, United States Of America (site inactive)

The following information is known about J55AX. 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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For development purposes only
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For development purposes only
Sorry, we have no imagery here.
For development purposes only
Sorry, we have no imagery here.
J55AX
CW9789
AC2EV
EW5589
EW8655
GW5931
CW0736
CW1656
EW6481
KG2V
EW5110
GW3379
KE2BQW
KC2EXG-9
EW8409
N2CJC
AA2YS
N2QDK-2
GW3344
EW9765
CW9540
GW5899
CW5494
GW0132
DW0110
EW3349
FW5947
EW2145
GW2258
EW7794
DW2745
CW9871
FW0844
GW2110
EW1479
FW1369
EW1379
GW3225
CW3833
FW9534
FW8347
N2YJJ-2
EW0811
EW0754
FW4479
EW4389
GW4152
FW2101
CW9854
FW9870
EW4711
FW7363
FW4059
FW4136
FW0087
FW7783
EW6819
GW5087
KD2PXF
GW4111
FW6381
FW3072
DW5977
DW2713
FW9020
FW6364
DW1806
EW7910
FW3258
GW5858
EW5043
FW7692
VA3JLF-1
CW9723
EW1847
FW3795
W2GR
GW3119
KF2XN
GW0127
FW4185
GW4933
DW1253
EW2420
CW9928
K2NV
GW2049
GW0268
EW5040
GW5055
GW0147
GW3170
GW2276
EW4781
DW7240
GW0518
FW6197
CW1837
GW5880
EW1385
EW6220
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Registered Location

Latitude: 43° 15' 57" N (deg min sec), 43.2657° (decimal), 4315.94N (LORAN)
Longitude: 77° 49' 0" W (deg min sec), -77.8167° (decimal), 07749.00W (LORAN)
Elevation: 97 metres (318 feet) -- validated against 98 metres (323 feet) from NED 1/3rd arc-second: Eastern United States
Location: J55A Hilton, NY, United States Of America
County: Monroe, NY
Data provider: USARRAY
Forecast Office: Buffalo (BUF)

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'J55AX' 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 j55ax@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: 2025-02-18 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  

Barometer

Average barometer error: 2.2 milliBars
Error standard deviation: 3.7 milliBars
Worst daily average barometer error: 7.5 milliBars
Worst daily standard deviation: 5.3 milliBars
Mean error value of 2.2 exceeds limit of 2.0
 
MADIS
rating
MADIS rating 31% QC OK
Sensor fails following checks:
L3 Spatial Consistency
 

Latest daily graph:

Latest daily graph

The standard deviation of your readings is higher than expected. This can be caused by a broken sensor that always reports the same value. It can be caused by a faulty sensor that sometimes reports values way out of range (such as 0). Check that your sensor is operating correctly.

Notes

Sometimes, larger than expected values of the standard deviation can be caused by the analysis process itself. If there is a stuck sensor on a neighboring station, this can cause a 'sawtooth' or 'jaggy' analysis. This will cause the standard deviation to be higher than it ought to be. If this happens to your station, then please ignore the warnings above. The analysis process is being upgraded to try and eliminate these problems.

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: Buffalo (BUF) .

SiteDistanceLocationBarometerTemperatureDewpoint
CW97892.6 milesNorth Hilton, NY, US (lat 43.3025°, long -77.8120°, altitude 83 metres) -0.5mb
AC2EV4.6 milesEast Greece, NY, US (lat 43.2503°, long -77.7275°, altitude 97 metres) -1.0mb
EW55896.3 milesEast Greece, NY, US (lat 43.2928°, long -77.6977°, altitude 78 metres) -1.9mb
GW59317.9 milesSouthwest BROCKPORT, NY, US (lat 43.2072°, long -77.9505°, altitude 168 metres) 0.1mb
KC2EXG-915.8 milesSoutheast Brighton, NY, US (lat 43.1317°, long -77.5632°, altitude 147 metres) -2.0mb
EW840917.1 milesSoutheast Rochester, NY, US (lat 43.1393°, long -77.5248°, altitude 129 metres) -2.0mb
N2CJC17.4 milesSoutheast Henrietta, NY, US (lat 43.0790°, long -77.5850°, altitude 161 metres) -1.4mb
N2QDK-219.9 milesEast Webster, NY, US (lat 43.2043°, long -77.4303°, altitude 143 metres) -1.8mb
GW589921.1 milesEast WEBSTER, NY, US (lat 43.2412°, long -77.3993°, altitude 108 metres) -0.9mb
EW334924.0 milesSoutheast Perinton, NY, US (lat 43.0417°, long -77.4533°, altitude 232 metres) -1.4mb

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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