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National Weather Service
Report - listing of Operational Products in database, sorted by product Originator.
 
Product Name Brief Description     Click Here for "Printable" version of this list. Originator
National Convective Weather Forecast The National Convective Weather Forecast (NCWF) is an automatically generated convective product that provides current convective hazards and 1 hour extrapolation forecasts of thunderstorm hazard locations. Jerry Shih 
Tropical Cyclone Track and Watch/Warning Graphic UPDATES INCLUDE: Addition of CPHC as an issuing office Addition of Potential Tropical Cyclone and Post-Tropical Cyclone system types that necessitate issuance of the graphics This product is a graphical representation of text messages issued by NHC. It provides critical information on the forecast path of the tropical cyclone, forecast track uncertainty, and watches and warnings issued by NHC.The Tropical Cyclone Track and Watch/Warning Graphics are prepared by the National Weather Service (NWS) National Hurricane Center (NHC) and Central Pacific Hurricane Center (CPHC) for tropical cyclones in the Atlantic basin and eastern and central North Pacific basins. The graphics contain forecast track, an error cone along the track as well as coastal tropical storm and hurricane watches/warnings. To form the error cone, a set of imaginary circles are placed along the forecast track at the 12, 24, 36, 48, 72, 96, and 120 h positions, where the size of each circle is set so that it encloses 67% of the previous five years official forecast errors. The cone is then formed by smoothly connecting the area swept out by the set of circles. Both 3-day and 5-day versions of this product are created as well as that add the initial wind field to the other elements in the graphics. This product is also issued for all systems that NHC or CPHC are writing advisories, including subtropical storms, potential tropical cyclone, tropical cyclones, and post-tropical cyclones. Jessica Schauer 
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) can now 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 
Probabilistic Tropical Cyclone Storm Surge Exceedance products The Tropical Cyclone Storm Surge Exceedance products provide storm susrge heights (in feet above normal tide level) and the probabilities from 10 to 90% increments, of storm surge exceeding the displayed height. The products are produced when a hurricane watch and/or warning is in effect for any portion of the Gulf or Atlantic coasts of the continental US. The products are available in graphic form, GRIB2 and ESRI Shape files. John F. Kuhn 
Tropical Cyclone Public Advisories (TCP) This is a 2015 update to the existing to operational product. PPD updated to change issuance times. John F. Kuhn 
Tropical Weather Outlook (TWO) The Tropical Weather Outlook (TWO) provides probabilistic information, in 10-percent increments, about a systemís potential for developing into a tropical cyclone. The forecast and discussion is provided on a disturbance-by disturbance basis out to both 48 hours and 120 hours. The National Hurricane Center issues TWOs for the Atlantic and east Pacific basins while the Central Pacific Hurricane Center issues TWOs for the central Pacific basin. John F. Kuhn 
Graphical Tropical Weather Outlook This document describes the Graphical Tropical Weather Outlook (TWO) produced by the National Hurricane Center (NHC) for the Atlantic and Eastern Pacific Hurricane basins and by the Central Pacific Hurricane Center (CPHC) for the Central Pacific Hurricane basin. This product is a visual companion product to the text TWO. The following changes have been made for effective May 15 for NHC Products and June 1 for CPHC Products: NHC:1. The current location of all active tropical cyclones will be included on the 5-day GTWO. 2. The current location of potential tropical cyclones will be included on the 2-day and 5-day GTWO. 3. The current location of the potential tropical cyclones will be depicted by an x, with the number of the potential cyclone (e.g., One) displayed above the x. The x will be color coded based on the forecast likelihood of tropical cyclone formation during the 2- or 5-day period corresponding to that graphic: - Yellow, 30 percent or less chance - Orange, 40-60 percent chance - Red, 70 percent or greater chance A swath showing the forecast development area of the potential tropical cyclone will not be shown on the 5-day GTWO to avoid confusion with the existing 5-day track forecasts that will be provided for those systems. 4. The current location of potential tropical cyclones will not be included in the shapefile that accompanies each issuance of the GTWO. Users will be directed to the shapefiles accompanying the full forecast advisory for potential tropical cyclones. The forecast advisory shapefiles will include the current location and forecast track of the potential tropical cyclone. CPHC:Beginning on or around June 1, 2017, the Central Pacific Hurricane Center (CPHC) will expand its 2-Day Tropical Weather Outlook (TWO) to 5 days. CPHC will also introduce a 5-Day Graphical Tropical Weather Outlook (GTWO) graphic in addition to 2-Day graphic already available. These changes will allow all NWS TWO and GTWO products to have the same valid times and formats. The 5-Day TWO from CPHC will provide a current assessment in plain language of areas of disturbed weather and their potential for tropical formation over the next 120 hours for the central Pacific basin. Like the 2-Day TWO, the new 5-Day TWO will provide probabilistic information, in 10-percent increments, about a system's potential for developing into a tropical cyclone. The forecast and discussion will be provided on a disturbance-by-disturbance basis for both the 2-day and 5-day periods for the central Pacific basin. John F. Kuhn 
Tropical Cyclone Wind Field Graphic This update makes the Tropical Cyclone Wind Field Graphic (TCWFG) issued by the Central Pacific Hurricane Center operational for the 2010 hurricane season. This graphic illustrates the areas potentially being affected by tropical cyclone sustained winds of varying force. The graphic also shows an approximate representation of coastal areas under a hurricane warning, hurricane watch, tropical storm warning and tropical storm watch. The white dot indicates the current position of the center of the tropical cyclone, and the dashed black line shows the history of the center of the tropical cyclone. John F. Kuhn 
Tropical Cyclone Surface Wind Speed Probabilities (TCSWSP) for the North Pacific Ocean in the NDFD This update makes the TCSWSP in the NDFD for the North Pacific Ocean operational for the 2010 hurricane season. The TCSWSP elements depict probabilities, in percent, of sustained surface wind speeds. These probabilities are provided for wind speed thresholds equal to or exceeding 34-, 50-, and 64-knots. These wind speed probabilities are based on the track, intensity, and storm structure (size in terms of wind radii) uncertainties in the official tropical cyclone forecasts. TCSWSP elements covering the North Pacific Ocean are available in NDFD in experimental status. Similar elements for the continental U.S. are available in NDFD in operational status. John F. Kuhn 
Probabilistic Tropical Cyclone Storm Surge and Tide Above Datum The Probabilistic Tropical Cyclone Storm Surge and Tide Above Datum consists of two suites of graphics. Probability of storm surge and tide above datum - series of graphics which show probabilities, in percent, of storm surge with tide exceeding 2 through 25 feet above North American Vertical Datum of 1988(NAVD88), at 1 foot intervals. Exceedance height of storm surge and tide above datum- series of graphics which show heights of storm surge with tide, in feet above NAVD88, which will be exceeded by a given percentage of storms. The suite of graphics range from 10 to 50 percent, at 10 percent intervals. John F. Kuhn 
Probabilistic Hurricane Inundation Surge Height The Probabilistic Tropical Cyclone Inundation Guidance products has been renamed the Probabilistic Hurricane Inundation Surge Height product. a.The Probabilistic Hurricane Inundation Surge Height (PHISH)guidance products consist of two suites of probabilities for the Gulf of Mexico and Atlantic coastal areas: 1) Probabilities, in percent, of inundation exceeding 0 through 20 feet above ground level, at 1 foot intervals (e.g., the probabilities in percent, of inundation exceeding 0 feet, 1 foot, 2 feet, .. 20 feet). 2) Probabilities of inundation heights (above ground level) being exceeded. The suite of products range from 10 to 50 percent, at 10 percent intervals. Each of the probabilities mentioned above will be provided out to 78 hours as a cumulative probability, defined as the overall probability the event will occur at each grid cell from the start of the run until some specified time (e.g. 0-6 hours, 0-12, 0-18, etc.)and as an incremental probability, defined as the probability the event will occur sometime during the specified forecast period (e.g. 0 - 6 hours, 6-12, 12-18, etc.) at each grid cell. The products are based upon an ensemble of Sea, Lake, and Overland Surge from Hurricanes (SLOSH) model runs using the National Hurricane Center (NHC) official advisory and accounts for track, size, and intensity errors based on historical errors. Plans are underway for tide to be incorporated into the suite of products during the 2013 hurricane season. Long term plans are to incorporate waves and freshwater (i.e. precipitation runoff and river inflow). John F. Kuhn 
Hurricane Local Watch/Warning Product The Hurricane Local Watch/Warning product is a segmented, automated product, with each segment being a discrete zone, containing tropical cyclone watches/warnings in effect, meteorological information, hazards (rain, storm surge, wind, tornadoes) and their potential impacts, and preparedness information at the Weather Forecast Office (WFO) level. The product is intended to be parsed by the weather enterprise. For 2015, the proposal is are for the Hurricane Local Watch/Warning Product to become the operational WFO flagship product for disseminating tropical cyclone watches/warnings for the Atlantic hurricane basin when a tropical cyclone affects land areas of their county warning area John F. Kuhn 

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