NOUS41 KWBC 262059

PNSWSH

 

Service Change Notice 13-16

National Weather Service Headquarters Washington DC

400 PM EST Tue Feb 26 2013

 

To:       Subscribers:

          -Family of Services

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network

          -NOAAPORT

          Other NWS partners and NWS employees

 

From:     Mary Mullusky

          Chief, Hydrologic Services Branch

 

Subject:  New Display of Automated Flood Warning Systems (AFWS)    

          Web Pages Effective on or before March 31, 2013

 

On March 31, 2013, the NWS Automated Flood Warning System (AFWS)

Web Pages currently displaying stream gage and precipitation will

be discontinued

 

http://afws.erh.noaa.gov/afws/

 

 

On or before March 31, 2013, this information will be integrated

into the Advanced Hydrologic Prediction Service (AHPS) Website.

AFWS stream gage information will be fully integrated with all

other AHPS stream gage observations and can be accessed at

 

http://water.weather.gov

 

 

with capabilities to view the information at the national, state,

Weather Forecast Office (WFO), River Forecast Center or Water

Resources Region scale.  AFWS precipitation information can be

accessed at

 

http://water.weather.gov/afws/

 

 

with capabilities to view at the national, state, Weather

Forecast Office, River Forecast Center or Water Resources Region

scale. Additionally, AFWS precipitation information can be viewed

at the county scale by clicking on the state, Weather Forecast

Office, River Forecast Center or Water Resources Region view.

 

These changes are being made in conjunction with infrastructure

modifications to increase the reliability and sustainability of

NWS Web-based hydrologic services. The most significant change is

the separation of the display of AFWS stream gage information

from the AFWS precipitation information at the county scale. AFWS

stream gage information can be accessed through WFO web pages

from the AHPS River and Lakes tab. Additionally, AFWS stream gage

information can be accessed through Area Hydrographs or the River

Observation Map links located at the bottom of the AFWS

precipitation county view page.

 

On or before March 31, 2013, Uniform Resource Locators (URLs)

used for the NWS’s AFWS Hydrologic Services web pages will be as

follows

 

National AFWS Information Page -

 

  old url:  http://afws.erh.noaa.gov/afws/

 

 

  new url:  http://water.weather.gov/afws/

 

 

WFO Scale AFWS Pages -

 

  old url:  http://afws.erh.noaa.gov/afws/

            index.php?gtype=precip&wfo=yyy

 

  new url:  http://water.weather.gov/afws/region.php?wfo=yyy

 

  example:  http://water.weather.gov/afws/region.php?wfo=RLX

 

In the example above, yyy is the NWS forecast office identifier. 

 

County Scale AFWS Pages -

 

  old url:  http://afws.erh.noaa.gov/afws/

            county.php?wfo=yyy&state=ww&county=zzz

 

  new url:  http://water.weather.gov/afws/

            county.php?state=xx&county=zzz

 

  example:  http://water.weather.gov/afws/

            county.php?state=WV&county=039

 

In the example above, yyy is the NWS forecast office identifier,

xx is the two character state abbreviation, and zzz is the

numeric three digit county ID which must be zero-padded if

necessary.  In the old url, ww is a numeric two digit state ID. 

 

AFWS Tabular Data Pages, Precipitation:

 

  old url:  http://afws.erh.noaa.gov/afws/

            tabular_data_$nwsli_precip.html

 

  new url:  http://water.weather.gov/ahps2/

             hydrograph_to_xml.php?gage=$nwsli&output=

             tabular&fcst_type=precip

 

  example:  http://water.weather.gov/ahps2/

             hydrograph_to_xml.php?gage=arfw2&output=

             tabular&fcst_type=precip

 

In the example above, yyy is the NWS forecast office identifier

and $nwsli is the NWS location identifier of a specific

precipitation gage. 

 

AFWS Tabular Data Pages, Stage –

 

  old url:  http://afws.erh.noaa.gov/afws/

            tabular_data_$nwsli_stage.html

 

  new url:  http://water.weather.gov/ahps2/

             hydrograph_to_xml.php?gage=$nwsli

            &output=tabular

 

  example:  http://water.weather.gov/ahps2/

             hydrograph_to_xml.php?gage=arfw2

        &output=tabular

 

In the example above, yyy is the NWS forecast office identifier

and $nwsli is the NWS location identifier for a point along a

river or stream.

 

Other AFWS information pages follow the pattern in the examples

above where the domain name immediately following http:// is

replaced with the new domain name water.weather.gov.

 

  old url:  http://afws.erh.noaa.gov/afws/nationalother.php

 

 

  new url:  http://water.weather.gov/afws/nationalother.php

 

 

These URL changes will not affect users who access NWS Web-based

hydrologic services through the tabs on the NWS main page at

 

http://www.weather.gov

 

 

or the national AHPS page at

 

http://water.weather.gov

 

 

Users who access the AFWS data either through the AHPS Hydrologic

Resources Automated Flood Warning System link or other AHPS pages

through AFWS links will be automatically redirected to the new

AFWS URLs.

 

Users who automatically interrogate the NWS Automated Flood

Warning System Web Pages to obtain hydrologic data will need to

change the URL in their procedures as shown in the examples above

to access the correct Web location.

 

The AFWS data on this Website comes from external data partners.

Beginning July 2012, NWS alerted external data partners that as

of March 31, 2013, the NWS will require quality-assured Automated

Local Evaluation in Real Time (ALERT) messages from the below

named states be transmitted to the NWS in Standard Hydrologic

Exchange Format (SHEF).  The impetus for this request was to

increase the efficiency and extensibility of the NWS AFWS. This

request will affect data from the following 12 states only:

Connecticut, Kentucky, Maryland, North Carolina, New Jersey, New

York, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia,

and West Virginia.

 

This change will better integrate the ALERT data into the AHPS

Web portal, streamlining data flow and user access to related

information. After March 31, 2013, the NWS will no longer be able

to ingest raw ALERT messages from the above mentioned locations. 

Unfortunately, some partners will be unable to convert by the

March 31, 2013, deadline. This will cause gaps in the data viewed

on the AHPS website which will be hosting the AFWS information. 

If you have questions on your data provider’s status in

transitioning to the new transmission format and collection

process, please contact your local Weather Forecast Office for

information.

 

See SCN 12-25: NWS to Establish New Methods to Collect Automated

Flood Warning System Information by March 31, 2013

http://www.nws.noaa.gov/os/notification/scn12-25afws.htm for more   

 

For further information, please contact:

 

John Bradley

Office of Climate, Water, and Weather Services

National Weather Service

john.bradley@noaa.gov

 

Donna Page

Office of Hydrologic Development

National Weather Service

donna.page@noaa.gov

 

National Service Change Notices are online at:

 

  http://www.weather.gov/os/notif.htm

 

 

$$