|The main left-hand menu on the NWS office home page (top), and the window showing the NOWData tab (bottom)|
NOWdata has been a feature on NWS climate pages for a couple of years, but a recent upgrade added new capabilities and access to CoCoRaHS observations, data from Remote Automated Weather System (RAWS) network, data from the USDA SNOTEL network, as well as from the NWS U.S. Cooperative Network stations. RAWS stations are largely used in the western U.S. for fire weather support, so your area may not have nay RAWS stations nearby depending on where you are.
If you would like to look at data from the U.S Cooperative Network stations, choose a station from the list in the list box on the left-hand side.
|NOWData menu for the NWS Lincoln, IL office|
CoCoRaHS and RAWS data are only accessible through the map interface. To access the map, click the View Map button on the left-hand side of the window. The initial map that displays will show the NWS County Warning Area (CWA) shaded with push pin symbols representing the U.S. Cooperative Network stations. If you hold your mouse over a symbol on the map the name of the station will display in the lower left corner of the map window.
To view the CoCoRaHS stations available (stations that have reported in the past year), click the "Show more stations" button at the bottom of the window. The map will get cluttered, but you will see the CoCoRaHS symbols on the map. You can zoom in on an area by dragging/panning the area you are interested in to the middle of the window, then click on the "+" symbol as many times as needed to zoom into the area you want, or you can use your mouse wheel. Again, holding your mouse over a symbol will display it's name in the lower left hand corner of the screen. Click on a symbol to select that station.
|The NOWData map window displaying U.S. Coop an CoCoRaHS stations|
The data is available in tables and in charts. Since we don't record temperature as part of CoCoRaHS none of the temperature products will be relevant. here are examples of the products using data from my CoCoRaHS station, IL-CP-1.
Daily data for a month is similar to the Station Precip Summary on the CocoRaHS web site.
|Daily precipitation for the current month. You can list daily precipitation for any month in the record.|
The Daily Almanac provides you with your statistics for today and the month and year to date, as well as record highest and lowest amounts and accumulations.
|Daily Almanac product on NOWData|
|Monthly and annual summary product on NOWData.|
Accumulation graphs can also be generated for a time period you specify. The graphs display the highest, lowest, and the actual data for the period you specify. When you mouse over a data point on one of the lines in the chart it will display the data, observed precip, accumulation to date, and the highest and lowest accumulation for the period to date for the station selected.
|Accumulated precipitation for 2014 for my CoCoRaHS station.|
|Accumulated snow fall for my station for the winter of 2013-2014.|
Take some time to jump on to your NWS office web site and play around with NOWData. It's a pretty cool tool. Here is a link to a page which lists and links to all of the NWS offices by state: