|[New] or [Modification]
(Click link to see details)
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|[Modification] Addition of Experimental Waterspout coding to the Special Marine Warning and Marine Weather Statement for all Coastal WFOS.||NWS Central Region offices have issued Special Marine Warnings (SMW) and Marine Weather Statements (MWS) with tags for hail and wind as an operational product format since 2010. The purpose of this PDD is to change how these hail and wind tags are encoded to bring them into conformity with how they are done within the Severe Thunderstorm Warning product, and to introduce a new tag to help users better identify the potential threat from waterspouts for all coastal WFOs|| PDDSMWWaterspoutTags2017.pdf|
|[Modification] Enhanced Impact Based Decision Support Services||This Service Description Document describes NWS’s impact-based decision support services (IDSS) provided for the protection of life and property to officials that serve within Emergency Support Functions as outlined in the Department of Homeland Security’.|| idss_sdd_emc_Version_2 (3).pdf|
|[Modification] Enhanced Product Experimental RFW Bullet Format (local enhancement to national product)||Fire weather customers in two NWS Regions have expressed current Fire Weather Warnings headlines result in long, complex RFW sentences that are difficult to understand. The Warning headlines must be read to fire fighters over the radio; so quick and efficient messaging is vital to user actions. To address these concerns, select Western (WFO BYZ) and Southern Region WFOs (WFOs servicing West Texas, the Oklahoma Panhandle and New Mexico) will provide an experimental RFW format for the 2013 fire season. The experimental product places the weather threat, reason for issuance and affected area from the main headline and into several, easy to read bullets immediately below the headline|| Enhanced RFW Bullet Format - National PDD.pdf|
|[Modification] Enhancement to the Operational Twitter SDD||Update Service Description Document for Twitter to indicate that NWS may provide tweets of short fused watches/warnings/advisories. Current description of our service indicates that NWS will only provide tweets with long fused alerts. Also need to indicate that NWS may provide content-specific feeds in addition to office-oriented feeds. Content specific feeds better meet the needs of our national partners who aren’t focused on the area of only one particular office.|| twitter_sdd_update.pdf|
|[Modification] Experimental 3km AR NDFD Grids||Operational 6 km digital datasets (and associated graphic forecast displays) integrated into NDFD for Alaska are available for the following elements: Maximum Temperature, Minimum Temperature, 12-hour Probability of Precipitation, Wind Speed, Wind Direction, Significant Wave Height, Hazards, Weather, Temperature, Dew Point, Wind Gust, Sky Cover, Apparent Temperature, Relative Humidity, Maximum Relative Humidity, Minimum Relative Humidity, Quantitative Precipitation Forecast (QPF) and Snow Amount. New experimental 3 km datasets for Alaska are now being provided for the same elements.
|[Modification] Experimental Adaptable NWS Forecast/Warning/Observation Widget and Web Page||This tool’s simple integration into any web page, will allow a broad range of users the ability to embed NWS forecast warning, and observation data seamlessly, while providing for a consistent look and feel, and assurance that NWS data is being used as intended. || PDD-AdaptableNWSForecastObservationWidget.pdf|
|[Modification] Experimental Aviation Surface Forecast and Aviation Clouds Forecast Graphics||The Aviation Surface Forecast and Aviation Cloud Forecast graphics are snapshot images derived from a subset of the aviation weather forecasts valid for the continental United States (CONUS) and coastal waters used within the Graphical Forecasts for Aviation interactive web-based display. The Aviation Surface Forecast graphics display surface visibility with overlays of surface wind and gusts, predominant precipitation type (i.e., rain, snow, mix, ice, or thunderstorm) coincident with any cloud, and predominant weather type (i.e., haze, fog, smoke, blowing dust/sand). Graphical Airmens Meteorological Information (AIRMETs) for Instrument Flight Rules (IFR) and Strong Surface Wind are overlaid. The Aviation Cloud Forecast graphics display cloud coverage fraction (few/scattered, broken, overcast) for clouds with bases below Flight Level 180 (FL180 - 18,000 feet above Mean Sea Level (MSL)). Text overlays indicate cloud coverage and height in feet above MSL at that particular location. Clouds above FL180 are indicated as Cirrus or CI above. Graphical AIRMETs for Mountain Obscuration and Icing are overlaid. Forecasted points may not represent conditions in proximity.
|[Modification] Experimental Beach Forecast Web Page||The Beach Forecast Webpage is a website designed for beach goers to easily see hazards and forecasts along various beaches. This webpage is being developed for SR coastal Forecast Offices, and if feedback is favorable will most likely be expanded to other regions as well.
This webpage offers rip current risks graphically, descriptions, and actions to take. The webpage also offers UV Index information.
The map is clickable, and from there you get a weather forecast and also rip current risk and UV index information as well.
The webpage offers links to the forecasts for the beach areas, water temperature when available, and other information such as links to lightning safety information and local radars.
|| PDD-Experimental Beach Forecast Webpage.pdf|
|[Modification] Experimental Collaborative Decision Making (CDM) Convective Forecast Planning (CCFP) Guidance||The experimental CDM Convective Forecast Planning (CCFP) guidance is a graphical representation of convection meeting specific criteria of coverage, intensity, echo height, and forecaster confidence. The experimental CDM Convective Forecast Planning (CCFP) guidance graphics are produced every 2 hours and valid at 2-, 4-, 6-, and 8-hours after issuance time.
The experimental CDM Convective Forecast Planning (CCFP) guidance will be automatically produced from the NOAA SREF, HRRR, HIRES ARW models, but will share the same format and be disseminated exactly as the human-produced Collaborated Convective Forecast Product. Additionally, to meet user needs, the experimental CDM Convective Forecast Planning (CCFP) guidance will be issued through March 1, 2016
|[Modification] Experimental Collaborative Aviation Weather Statement (CAWS)||The Collaborative Aviation Weather Statement (CAWS) is a product (weather service) collaborated by National Weather Service (NWS) meteorologists, airline meteorologists, and other airline and Federal Aviation Administration (FAA) personnel. The CAWS focuses on specific, convective forecasts impacting the Core 29 airports and high traffic en-route corridors. The focus is event-driven, supporting the ability to more effectively initiate, adjust, or terminate planned or active Traffic Management Initiatives (TMI) to balance traffic demand in the constraint locations|| CAWS_PDD.pdf|
|[Modification] Experimental Day 4-7 Winter Weather Outlook ||The Day 4-7 Winter Weather Outlook is a graphical probabilistic forecast depicting the probability of winter precipitation (snow/sleet) exceeding 0.25 inches (~6 mm) water equivalent over a 24-hour period. The product is comprised of 4 graphics showing the forecast for Day 4, Day 5, Day 6, and Day 7. The outlook is prepared twice daily by Weather Prediction Center (WPC) medium range forecasters|| WPC_WinWx_PDD__16Dec.pdf|
|[Modification] Experimental Day 4-7 Winter Weather Outlook Product in the NDFD||The National Centers for Environmental Prediction’s (NCEP) Weather Prediction Center’s (WPC) computes the probability of winter precipitation (snow/sleet) exceeding 0.25 inches (~6 mm) water equivalent over a 24hour period (Valid Time 12Z12Z)for Days 4, 5, 6,and 7. The National Weather Service (NWS) is adding this information to the National DigitalForecast Database (NDFD) as an experimental element. The outlook is prepared twice daily by WPC medium range forecasters.|| ExplDay4to7WinterWeatherOutlookinNDFD.pdf|
|[Modification] Experimental Days 3-7 Winter Storm Threat||The purpose of the Experimental Days 3-7 Winter Storm Threat product is to graphically display location and level of winter storm threats in the extended portion of the forecast 3 to 7 days in the future. This threat level combines forecaster confidence and potential impact. || LWXDays3-7PDD.pdf|
|[Modification] Experimental East Pacific Offshore Waters Forecasts||The Tropical Analysis and Forecast Branch (TAFB) is providing on an experimental basis East Pacific Offshore Waters Forecasts for the proposed TAFB offshore waters area of responsibility which encompasses the waters within 60 nautical miles offshore of Mexico from the Mexico/United States border south to 29N, and within 250 nautical miles south of 29N including Mexico, Central America, Colombia, and within 750 NM of Ecuador. The experimental east Pacific offshore waters forecasts provide zone forecasts for 10-m winds, significant wave heights, primary swell direction, the dominant wave period, and significant weather for 17 zones in the proposed TAFB offshore waters area of responsibility.|| PDDExperimentalEastPacificOffshoreWatersForecasts2016_.pdf|
|[Modification] Experimental Enhanced Data Display||Multi-purpose web-based, cross-platform GIS system that provides our partners and customers with a single comprehensive web-based interface to access both forecasts and observations of any nature (public, fire, marine, aviation, hydrologic, climate, etc.). EDD puts this information in one place making it very easy to display and manipulate this data. EDD is hosted on the National Internet Dissemination System (NIDS) and was developed by the Weather Ready Nation Pilot Project in Charleston, WV..|| EDD_PDD_07_9_13.pdf|