In October 2017, the Portal was expanded from only North Carolina to cover the 13-state US Forest Service southern region. Along with adding data across the southeast US, other updates to the Portal include faster loading times and a mobile-friendly design.
The Fire Weather Intelligence Portal works best in recent versions of Google Chrome, Mozilla Firefox, or Microsoft Internet Explorer. Some features of the Portal may not be supported in Internet Explorer 8 and earlier versions. Point data can still be displayed on the map in these older versions, but users should update their browsers for optimal results.
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Alternatively, in the Map Details menu, you can select a state or county, or pan and zoom the map to select a custom location. In this menu, you can also switch between a terrain map and street map background, and toggle various reference layers such as county lines.
You can pan the map by single-clicking and dragging, and zoom in by double-clicking, using your mouse wheel, or using the zoom controls in the top left corner of the map.
On the Current Conditions tab, the most recent hour is shown. At 15 minutes past the hour, the observation time will "switch over"; e.g., at about 4:15 pm, the Current Conditions tab will stop showing data from the 3 pm hour and start showing data from the 4 pm hour.
Note that if you choose any point-based NFDRS parameters, the most recent 1 p.m. observations will be shown. NFDRS data for the current day will become visible after 3:15 pm ET.
On the Forecast Conditions tab, you can choose a time up to 72 hours in the future. NFDRS point forecasts from the National Weather Service are available for the following day only.
Every 10 minutes, data on the Current Conditions and Forecast Conditions tabs will reload so the most up-to-date information is always displayed.
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Station Status page. This page may help you diagnose whether stations have missing data over a particular time period, and view individual observations for each station. Data is available at the following timescales:
- Monthly: For each month in a specified period, you can view the percentage of days with NFDRS data available . Click on a monthly percentage to view the daily observations for that station and month. This option will only show stations that are manually edited in WIMS.
- Daily: For each day in a specified date range, you can view the percentage of hours with data available. Click on a daily percentage to view the hourly observations from that station and day.
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log wind profile method is used to estimate the 6 meter winds based on the observed 10 meter winds.
These stations include above-ground temperature, relative humidity, and precipitation sensors, and three columns of below-ground soil sensors at depths of 5, 10, 20, 50, and 100 centimeters.
NFDRS data only appears in the Portal for stations and observations that are manually reviewed within WIMS.
SimpleFFMC formulation. Forecasted values for 1-hour and 10-hour dead fuel moisture content remain available.
You can load up to three meteograms at a time for a station. Change the parameter and time period displayed using the "Meteogram Options" above each meteogram.
By clicking and dragging across a range of dates/times on the meteogram, you can zoom in to that period. Double-click on the meteogram to zoom back out.
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Geospatial Multi-Agency Coordination Group (GeoMAC). Click on a fire perimeter for more details.
This product is also used to calculate several drought indices. The Standardized Precipitation Index, or SPI, is a commonly used drought index based on the precipitation over a selected number of months. Positive SPI values indicate wet conditions while negative SPI values indicate dry conditions.
A gridded version of the Keetch-Byram Drought Index is also available. This product is based on the Precipitation Estimate dataset and gridded temperature estimates from PRISM and RTMA. That means this product is not an interpolation or weighted average of point-based NFDRS observations. Because of this, the gridded KBDI data won't always perfectly agree with the station data, but it does help show the pattern where no stations are available.
At times, you may see strange or large differences from one grid cell or pixel to ones around it. These are generally artifacts from the source data, such as places where the radar beam was blocked. When using these maps, it's often best to look at the general pattern over a county-based or larger region to avoid confusion about differences from one grid point to the next.
Real-Time Mesoscale Analysis (RTMA) product, which is produced by the NOAA National Centers for Environmental Protection.
Gridded analyses are available for Current Conditions and Past Conditions since May 2013.
National Digital Forecast Database (NDFD). Available fields are air temperature, dew point, relative humidity, wind speed and cloud cover, all at approximately 5 kilometer resolution.
The NDFD maps can sometimes look like an interesting patchwork, with obvious and seemingly unnatural boundaries between higher and lower values. This is often because each NWS office's forecast may differ slightly from the offices around it, so when all of their forecasts are assembled, there might not be smooth transitions between forecast areas.
NDFD data is available at three-hour intervals up to 72 hours in the future. If you choose a forecast hour for which NDFD data is not available, the closest hour with available data will be used.
We also receive forecast data from National Weather Service offices in Greer, SC; Raleigh, NC; Morehead City, NC; and Wakefield, VA. This includes fire-specific parameters such as the Lavdas atmospheric dispersion index, the Low Visibility Risk Index, and the ventilation rate. Data is available only for those offices' county warning areas.
National Blend of Models (NBM), which is created and disseminated by the National Weather Service.
The NBM is based on the Global Forecast System (GFS), Global Ensemble Forecast System (GEFS), the Global Data Assimilation System (GDAS), and Canadian global deterministic and ensemble forecast models.
Forecasts are available at a 2.5 kilometer resolution across the continental United States. Hourly forecasts are available up to 36 hours out with 3-hourly forecasts from 36 to 72 hours out.
These forecasts indicate the expected likelihood of above-normal or below-normal conditions, or where no strong guidance is available, equal chances of above-, below-, and near-normal conditions.
In addition, the CPC issues monthly and seasonal drought outlooks that indicate the likelihood of drought persistence, improvement, removal, or development based on the current US Drought Monitor map and precipitation outlooks over the next 1 and 3 months.
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