Site Information for KH47 (H47) in Hyampom, CA, United States of America

The following information is known about KH47. 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.

Location Map: If this message persists, then your browser is not compatible with Google Maps.
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Registered Location

Latitude: 40° 37' 32" N (deg min sec), 40.6256° (decimal), 4037.54N (LORAN)
Longitude: 123° 28' 7" W (deg min sec), -123.4685° (decimal), 12328.11W (LORAN)
Elevation: 389 metres (1277 feet) -- validated against 386 metres (1265 feet) from NED 1/3rd arc-second: Western United States
Location: Hyampom, CA, United States of America
County: Trinity, CA
Forecast Office: Eureka (EKA)

The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'KH47' 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 2 data sources. 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

You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs.

Neighboring Stations

This is a list of stations that are close to this 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: Eureka (EKA) .

KD6311.5 milesSouthwest Dinsmore, CA, United States of America (lat 40.4920°, long -123.5982°, altitude 723 metres)
MVRC111.6 milesSouth Mad River(raws), CA, United States Of America (lat 40.4633°, long -123.5239°, altitude 846 metres)
MUDC111.6 milesNortheast Mud Springs Near Weaverville 18w, CA, United States Of America (lat 40.7169°, long -123.2831°, altitude 1075 metres)
TMPC511.8 milesSouth Mad River, CA, United States Of America (lat 40.4600°, long -123.5200°, altitude 846 metres)
PG25011.8 milesSouth Highway 36, CA, United States Of America (lat 40.4604°, long -123.5238°, altitude 846 metres)
KF6216.1 milesEast Hayfork, CA, United States of America (lat 40.5470°, long -123.1796°, altitude 707 metres)
PG27916.5 milesSouth Lower Mad River, CA, United States Of America (lat 40.3881°, long -123.4489°, altitude 788 metres)
HYKC116.8 milesEast Hayfork(raws), CA, United States Of America (lat 40.5500°, long -123.1650°, altitude 708 metres)
PG20416.9 milesSouthwest Larabee Valley, CA, United States Of America (lat 40.4404°, long -123.6795°, altitude 751 metres)
DW898421.9 milesNorth Junction City, CA, US (lat 40.9218°, long -123.6187°, altitude 174 metres) (data present)

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


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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