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Listing of EXPERIMENTAL Products.
Product Name Brief Description View PDD
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[Modification] Addition of Experimental Waterspout coding to the Special Marine Warning and Marine Weather Statement for the Great LakesNWS 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. PDD SMW Waterspout Tags 2015.pdf
[Modification] Enhanced Impact Based Decision Support ServicesThis 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 SDDUpdate 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 GridsOperational 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. AK_ExperimentalNDFD_PDD.pdf
[Modification] Experimental Adaptable NWS Forecast/Warning/Observation Widget and Web PageThis 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 Alaska Region NDFD GridsPDD updated in 2014 to extend comment period. PDD updated in 2013 to extend comment period. PDD updated in 2012 to extend comment period. PDD updated in 2011 to extend comment period. PDD updated in 2010 to extend comment period and to update links. PDD updated in 2009 to include new elements: Hazards, Weather, Temperature, Dew Point, Wind Gust, Sky Cover, Apparent Temperature, Relative Humidity, Quantitative Precipitation Forecast (QPF) and Snow Amount. Under statute, the National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) is charged to collect data on climate, water, and weather, provide forecasts and warnings of severe weather in order to protect life and property, and create and disseminate forecasts and other weather information for the benefit of a wide range of weather sensitive businesses and activities. By capitalizing on rapid advances in science and technology and infusing these advances into its operations, the NWS has taken steps to proactively respond to ever changing and growing demands of its users. The most recent experimental digital datasets (and associated graphic forecast displays) integrated into NDFD are the following elements for Alaska: Maximum Temperature, Minimum Temperature, 12-hour Probability of Precipitation, Wind Speed, Wind Direction, and Significant Wave Height. AK_OperationalNDFD_PDD.pdf
[Modification] Experimental Aviation Weather Center Impacts Terminal Aerodrome Forecast (TAF) BoardThe experimental AWC Impacts TAF board is a time series display of weather conditions at select airports across the United States. Each box (hourly forecasts from TAF) is color-coded based on the level of the hazard. White represents no impact, yellow slight impact, orange medium impact, and red high impact. The letters in the box represent the cause of the hazard. They are as follows: -CIG – Ceiling (hundreds of feet, Above Ground Level [AGL]) -VIS – Visibility (statute miles) -WX – Weather (see legend) -WSpd – Wind speed (knots) -WGust – Wind gusts (knots) TAF_Board.pdf
[Modification] Experimental AWC PIREP Online Submission FormPilot Reports (PIREPs) are reports of meteorological phenomena encountered in flight. These reports assist other pilots, dispatchers, and flight planners with flight plan preparation, situational awareness, and operational decision making. The PIREPs are integrated into the NWS forecast production process to help improve the accuracy of the forecasts, which include human generated products such as AIRMETs and SIGMETs as well as automated products such as the Graphical Turbulence Guidance (GTG), the Current Icing Product (CIP) and the Forecast Icing Product (FIP). PIREPs are particularly valuable in areas where surface-based observations are unavailable. The Aviation Weather Center PIREP online submission form enables registered users to enter PIREPs electronically, which will be distributed and displayed graphically on the Aviation Weather Center’s website Users will be able to register at and submit their PIREPS at All users will be subject to validation on the basis of having (1) an active pilot’s license (2) a .gov or .mil email address or (3) a group ID number for airlines. All other account requests will be evaluated on a case by case basis. PIREP_submit_SDD.pdf
[Modification] Experimental Beach Forecast Web PageThe 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) GuidanceThe 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 eCCFP_PDD.pdf
[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.pdf
[Modification] Experimental Days 4-7 Winter Storm ThreatThe purpose of the Days 4-7 Winter Storm Threat product is to graphically display location and level of winter storm threats in the extended portion of the forecast 4 to 7 days in the future. This threat level combines forecaster confidence and potential impact. LWX Days 4 to 7 WST PDD_final.pdf
[Modification] Experimental East Pacific Offshore Waters ForecastsThe 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

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