| Product Name |
Brief Description |
View PDD |
| (Click to see details) |
|
(Shift-Click to get file) |
| D Region Absorption Prediction, Release 2 | The D-Region Absorption Prediction, Release 2 (D-RAP2) product provides a suite of graphic and text information about the global High Frequency (HF) radio propagation conditions related to the state of the ionosphere’s D-region. D-RAP2 will be web based (http://www.swpc.noaa.gov/drap/index.html) and is an enhancement of the current D Region Absorption Prediction product (http://www.swpc.noaa.gov/dregion/index.html). D-RAP2 fills a void that exists in the current product by providing absorption information due to energetic proton precipitation at high latitudes. The web site provides:
o A main page containing a global map of the highest HF frequencies affected by a 1dB attenuation, estimated recovery times, and links to subordinate pages.
o Subordinate pages containing: north and south polar maps of the highest frequencies affected by a 10dB attenuation, and ASCII tabular values of total absorption at 10 MHz.
o DRAP2 is updated every minute
SWPC data and products are designed to provide accurate and real-time space weather information for the safety and benefit of our customers
| SWx_DRAP2_Op_PDD.pdf |
| Day 4-8 Severe Weather Outlook Guidance | The Day 4-8 Severe Weather Outlook product will consist of one graphic with an area (s) where severe weather is anticipated during the period. The severe weather threat areas will be depicted with a closed line and a label indicating the dates of the expected threat. A short 2-4 sentence paragraph will accompany the graphic to briefly describe the area depicted and occasionally describe the key reasons for the forecast. The forecast decision will be based on a variety of guidance information including the GFS, UKMET and ECMWF deterministic models, Medium Range (MREF) ensemble guidance and other statistical techniques.
| Day4-8SevereOutlook.pdf |
| Dry Lightning Potential Index | The Dry Lightning Potential Index (DLPI) is a graphical product produced by forecasters at WFO Las Vegas (VEF) using GFE/IFPS. Ratings of Dry Lightning potential (numbered from 0 through 6) for the next three days (today, tomorrow and the next day) are calculated using forecasts of boundary layer relative humidity and static stability. The DLPI is intended to be used as general guidance, primarily for planning purposes. The DLPI is intended as a seasonal product, issued from June through October, when active wildfires are most likely to occur in our forecast area | VEFPDD_DLPI-1-1.pdf |
| Eastern Pacific Hurricane Season Outlook | The Climate Prediction Center (CPC) issues the Hurricane Outlook for the eastern Pacific east of 140? West. No outlook, however, can give certainty as to whether or not a particular locality will be impacted by a tropical storm or hurricane in any given year. CPC issues this outlook in cooperation with the Tropical Prediction Center and NOAA?s Hurricane Research Division. | EPHO_v2.pdf |
| Eastern Region National Digital Forecast Database (NDFD) Graphic Forecast Displays | The National Oceanic and Atmospheric Administration (NOAA) National Weather Service (NWS) National Digital Forecast Database (NDFD) Graphic Forecast Displays (http://www.erh.noaa.gov/ndfd/graphical/sectors/ccc.php)where ccc is the WFO ID, are web-based presentations of digital forecast data originating from local Weather Forecast Office (WFO) digital databases. The data is displayed in a graphical form on a local scale. | ERNDFDGraphics1.pdf |
| El Ni?o/Southern Oscillation (ENSO) Diagnostic Discussion | The Climate Prediction Center (CPC) issues this monthly bulletin to provide insight into climate outlooks by reviewing the potential effects of the ENSO. | ENSODD_v2.pdf |
| Enhanced Winter Weather Guidance Product Suite | The Hydrometeorological Prediction Center (HPC) proposes to produce probability guidance for three specific snow/sleet accumulation thresholds per forecast day out to Day 3. HPC will also generate separate probability graphics for the exceedance of freezing rain. In addition a single graphic will depict both HPC forecast position of significant surface low pressure centers over the contiguous U.S. and conveyance of uncertainty of the forecast position. This will be depicted in 12 hour increments out to Day 3. | EWWGPS.pdf |
| Ensemble Trace plot | Currently the National Weather Service (NWS) River Forecast Centers (RFCs) and Weather Field Offices (WFOs) produce a wide variety of river forecasts, which indicate current and future river conditions. The Ensemble Trace Plot prepared by the North Central River Forecast center (NCRFC) will be issued as a Web page graphic. The graphic will be for the NCRFC?s area of responsibility. It will be issued once a month (after the Climate Prediction center (CPC) outlooks are released at mid-month). It will cover the three month period after the issuance (for example, graphic released around May 26 will cover June-August period). | NCRFCEnsembleTraceplot.pdf |
| Expected Value plot | Description: Currently the National Weather Service River Forecast Centers and Weather Forecast Offices produce a wide variety of river forecasts to indicate current and future river conditions. The Expected Value graphic indicates timing and confidence levels for forecast stages for a selected time-frame, generally 90 days. This would provide an overall range of expected hydrologic conditions based on computed probabilities. The Expected Value Graphic will be issued as a web-based graphic for NCRFC?s area of responsibility. It will be issued once a month after the Climate Prediction Center outlooks are released at mid-month to cover the ensuing three month period (i.e. graphic issued around May 26 will cover the period from June-August). | NCRFCexpectedvaluegraphic.pdf |
| Extreme Wind Warning (EWW) | The Extreme Wind Warning (EWW) is a text product prepared by the National Weather Service (NWS) Weather Forecast Offices (WFOs). The product warns of imminent or impending extreme winds associated with a landfalling hurricane. | EWW.pdf |
| Fire Weather Point Forecast Matrix | Land management agencies in Georgia and North Carolina have expressed a need for easily accessible tabular forecast data that is tailored toward fire behavior applications. A fire weather version of the Point Forecast Matrix (PFM) table fits this need well because it allows agency specialists to quickly run simple fire behavior models for planning purposes. The product is called the Fire Weather Point Forecast Matrix (PFW) and is generated routinely for the National Fire Danger Rating System (NFDRS) sites or other areas as determined by the users. This additional data will help land management agencies to ensure the safety of fire crews as well as better plan prescribed burns and other projects in a cost and resource effective manner. Also, land managers have expressed a need for better tools to predict and manage smoke dispersion. They have also requested that the NWS include an Atmospheric Dispersion Index (ADI) and Low Visibility Occurrence Risk Index (LVORI) in the PFW product.
WFO Fire Weather PFW’s are generated for the Remote Automated Weather Station (RAWS)/NFDRS sites using an edited version of the standard PFM formatter. This formatter produces needed fire weather parameters from the local WFO’s Digital Forecast Database (DFD). PFW's can be generated for any grid point in a DFD based upon user request. The web delivery of the product for fire weather customers will include a disclaimer at the top of the page stating “This product is for planning and review purposes only and is not to be substituted for an official fire weather spot forecast. The data displayed are calculated from a 5.0 by 5.0 km digital database and only approximates weather conditions in highly varying terrain. Please relay any comments you have to your local NWS office.
An example of the PFW can be seen at: http://www.srh.noaa.gov/productview.php?pil=GSPPFWGSP .
| PFW_official.pdf |
| Fire Weather Threat 4-Panel Graphic | The Fire Weather Threat 4-Panel Graphic displays on the Internet several parameters that are critical for fire weather. In the upper left corner of the graphic is a ?Red Flag Risk Index? based on forecast minimum relative humidity (RH) and forecast maximum sustained wind. In the upper right hand corner is the Red Flag Risk Index for the current hour based on the GFE RH and wind observation database. In the lower left corner is the Haines Threat Index based on the forecast high level Haines Index and forecast minimum relative humidity. A second graphic is available based on the Forecast Haines Index and the current relative humidity from the GFE observation database. In the lower right hand panel three graphics reside. The probability of 25% or lower RH, 15% or lower RH, and the current observed RH. | pdtfwthreat1.pdf |
| Fire Weather Watch/Warning Display | The Fire Weather "Red Flag" Watch/Warning Display provides an HTML visual display of all fire weather "Red Flag" watch/warnings that are currently in effect across the western U.S. | FWWWD.pdf |
| Five Day Sea Ice Forecast | Forecast sea ice conditions over the waters surrounding Alaska valid at the day five period.
| FiveDaySeaIceForecast.pdf |
| Flash Flood Potential Index | The Flash Flood Potential Index (FFPI) is a text product produced by forecasters at the WFO SGX and WFO LOX using objective forecasts techniques based upon model data. Ratings of flash flood potential (numbers 0 through 4) for the next two days (today and tomorrow or tomorrow and the next day - depending on the issuance time) are calculated using precipitable water, winds aloft (700 mb), and forecaster knowledge of other atmospheric factors such as stability and atmospheric capping. The FFPI is issued during flash flood season from June 1st through September 30th.
| sgxffpr.pdf |
weather.gov 
