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Listing of EXPERIMENTAL Products
 
Product Name Brief Description Submitter Date Entered
Proposed changes to the criteria for issuing tropical cyclone watches and warnings to include certain land-threatening disturbances that are not yet tropical cyclones The National Weather Service (NWS) proposes beginning on or about May 15, 2017,to have the option to issue watches, warnings, and graphical and textual advisory products for disturbances that are not yet a tropical cyclone, but which pose the threat of bringing tropical storm or hurricane conditions to land areas within 48 hours. Under previous long standing NWS policy, the NWS has not been permitted to issue a hurricane or tropical storm watch or warning until after a tropical cyclone had formed. Jessica Schauer 2017-01-31
Proposed Changes to Tropical Cyclone Forecast Graphics and GIS Files Effective on or about May 15, 2017, the appearance of the graphics accompanying tropical cyclone advisory packages issued by the National Hurricane Center (NHC) and Central Pacific Hurricane Center (CPHC) will change. These changes are required for the NHC and CPHC to begin issuing forecasts and watches/warnings for potential tropical cyclones.three new Keyhole Markup Language (KML) files will be available and the wind speed probability Geographic Information System (GIS) files will be available at higher resolution. Wayne Presnell 2017-01-31
Proposed changes to the Operational Collaborative Convective Forecast Product (CCFP):Traffic Flow Management Convective Forecast (TCF) The Federal Aviation Administration (FAA) has requested the National Weather Service (NWS) update the CCFP to only include high-confidence forecasts and to rename the product the Traffic Flow Management (TFM) Convective Forecast (TCF). Like the CCFP, the TCF is a NWS product collaborated by meteorologists at the Aviation Weather Center (AWC) in Kansas City and embedded at the FAA Air Traffic Control System Command Center (ATCSCC) in Warrenton, VA, at the Center Weather Service Units (CWSU) embedded at the FAA’s Air Route Traffic Control Center (ARTCC), and at various airlines and authorized organizations. The TCF is a high confidence graphical representation of forecasted convection meeting specific criteria of coverage, intensity, and echo top height. These forecasts will allow Air Traffic Management (ATM) decision makers to proactively and collaboratively initiate, amend, or terminate planned or active Traffic Flow Management initiatives, resulting in safe and efficient use of the NAS. Clinton Wallace 2017-02-10
Proposed Changes to the National Tropical Cyclone Watch and warning (TCV) products for the Atlantic Basin for 2017 Effective on or around June 1, 2017, the National Hurricane Center (NHC) will expand the tropical cyclone watch and warning information available in its National Tropical Cyclone Watch/Warning (TCVAT#) products issued for Atlantic tropical cyclones. In past hurricane seasons, the National TCV products for the Atlantic basin contained only the tropical cyclone wind watches and warnings along coastal segments issued by NHC. Beginning in the 2017 hurricane season, the national TCV products from NHC for the Atlantic basin will include all NWS-issued zone-based tropical cyclone wind and storm surge watches and warnings from both NHC and local Weather Forecast Offices (WFOs) and will no longer contain breakpoint information. Wayne Presnell 2017-02-27
Proposed changes to the Surface Analyses and Forecast charts for OPC, TAFB, and WFO HNL The OPC would change the content of its surface analyses, and 24-, 48-, and 96-hour forecast charts. The TAFB would change the content of its surface analyses and 72-hour forecast charts. WFO Honolulu, Hawai’i would change the content of its surface analyses. The proposed change would be for these charts to contain future forecast track information only for extratropical low pressure systems that have, or are forecast to have, hazards associated with them. The hazards displayed will be gale, storm, hurricane-force, developing gale, developing storm, developing hurricane-force, and possible tropical cyclone. Heavy freezing spray information and the ice edge will be included as well. As proposed, the analysis and forecast charts will no longer include past track information, and forecast tracks for highs, extratropical lows with none of the aforementioned hazards associated with them or expected, and tropical cyclones. This change will improve OPC, TAFB, and WFO Honolulu forecaster ability to provide detail in their digital forecasts. For OPC, the change will provide flexibility in the OPC workflow to test and potentially implement a 72-hour forecast chart. Additionally, the change will ensure consistency of information regarding tropical cyclones found through text and graphics supplied by the NHC, Central Pacific Hurricane Center (CPHC), and Joint Typhoon Warning Center (JTWC). Darin Figurskey 2017-02-27
Proposed changes to the Graphical Tropical Weather Outlook Enhancements to the operational Graphical Tropical Weather Outlook Wayne Presnell 2017-03-03
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. Kevin Stone 2017-03-20
Proposed Winter Weather and Water Resources Program Products Consolidation for experimental implementation In the Fall of 2016, the HazSimp project proposed the idea of consolidating Winter and Hydrologic products. Two surveys were created which outlined the proposed consolidated/reformatted products. The feedback was overwhelmingly in favor of the consolidation and reformatting. Now, the HazSimp project is formally requesting to consolidate and reformat our Winter and Hydrologic products. Two surveys will be created which outline our proposals for Winter and Hydrology; the surveys will be open for 30-days. Once the comment period closes, a detailed analysis of both surveys will begin. This proposal will reformat all current Winter Weather products (Watches, Warnings and Advisories) to follow a “What”, “Where”, “When”, “Additional Details” and “Precautionary/ Preparedness Actions” order. The proposal will also consolidate Winter Watch and Advisory Precipitation Products and at a subset of offices, consolidate the Lake Effect Snow Warning. This proposal will reformat all Flood Watches, Warnings, and Advisories to follow a “What”, “Where”, “When”, “Additional Details” and “Precautionary/ Preparedness Actions” order. The proposal will consolidate all Flash Flood Watch and Flood Watch products into one Flood Watch product. The Flash Flood Watch product will no longer be issued. Instead, information regarding possible flash flooding will be contained in the “What” section of the reformatted message. The FF.A VTEC will be discontinued during the demonstration. For a select number of sites to be announced with any subsequent Service Change Notice, the NWS will no longer use the five types of individual headlines associated with Flood Advisory products (Urban and Small Stream Flood Advisories, Arroyo and Small Stream Flood Advisories, Small Stream Flood Advisories, Flood Advisories, and Hydrologic Advisories) within the FA.Y Valid Time Event Code (VTEC). Instead, specific information regarding individual hazards will be provided in the “What” portion of the products. David Soroka 2017-03-28
Experimental Weeks 3-4 Precipitation Outlook The NWS Climate Prediction Center (CPC) issues temperature and precipitation outlooks for the Week-2 and 1-month outlook periods. To close the gap- intermediate time scale (i.e., Weeks 3-4) between the 2 week and 1 month forecast time horizons, the CPC developed and solicited comments on the Experimental Weeks 3-4 Temperature and Precipitation outlooks. The Temperature outlook has been approved for operational implementation. The precipitation outlook needs additional testing and the experimental comment period has been extended for another year. The objective of the product is to highlight regions where above or below average 2-week mean total precipitation are favored as well as provide advance notice of potential precipitation pattern changes to further assist decision makers in weather and climate sensitive activities in their decisions. Jon Gottschalck 2017-04-18
  
  
  
  
  

Listing contains 79 items. Total pages: 6   Click on desired page:  Prev. Page «    1    2    3    4    5   6 
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