Fire weather haines index

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WebJul 16, 2024 · An FFDI over 25 is considered a “very high” fire danger rating; an index over 50 presents a “severe” fire risk, resulting in a total fire ban. The monthly and seasonal means for the number of days that both C-Haines and FFDI met or exceeded their respective thresholds were calculated for each grid-cell for each period. WebHaines Index (also known as Lower Atmosphere Severity Index) is a weather index developed by meteorologist Donald Haines in 1988 that measures the potential for dry, …

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WebPCU 4: Provide Fire Weather Products and Services. Understand the needs of our fire weather partners to ensure we produce timely, high quality, relevant, and clearly defined products and services using pertinent meteorological data, and fire weather forecast tools and techniques. Demonstrate the ability to add value to gridded forecast datasets. WebHaines Index (HI) Is a numerical value that indicates the potential for large wildfires to experience extreme fire behavior. The HI combines both the instability and dryness of … hall the fame

Haines Index - WFAS

http://highfirerisk.com.au/tools/c_haines_flierA4.pdf WebThe Fire Weather Index (FWI) integrates current ISI and BUI to produce a unitless index of general fire intensity potential. It is analogous to NFDRS Burning Index. With dry fuel conditions, it is a key indicator of extreme fire behavior potential. Again, unitless and … burgundy poncho with sleeves

Wildland Fire Assessment System (WFAS) NWCG

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WebHaines Index - This is a fire weather index based on the stability and moisture content of the lower atmosphere that measures the potential for existing fires to become large fires … WebSep 1, 2024 · The forecast header documents 1) the type of fire weather forecast (described further in Types of Fire Weather Forecasts ), 2) the time and place the … burgundy pool chalkWebFire Weather: Aviation Weather: Temperature (°F) Dewpoint (°F) Wind Chill (°F) Surface Wind . Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder … hall the north end 2018

"WebThe Atmospheric Dispersion Index (ADI) was developed by the U.S. Forest Service to assess the impact of prescribed burning activity on atmospheric smoke concentrations and air quality. The same processes responsible for good smoke dispersion also contribute to erratic fire behavior and may present very hazardous conditions. " - Fire weather haines index

Fire weather haines index

Keetch-Byram Drought Index (KBDI) – U.S. Forest Service

WebApr 10, 2024 · Haines (1988) developed the Lower Atmosphere Stability Index, or Haines Index, for fire weather use. It is used to indicate the potential for wildfire growth by measuring the stability and dryness of the air over a fire. WebThe Keetch-Byram Drought Index assesses the risk of fire by representing the net effect of evapotranspiration and precipitation in producing cumulative moisture deficiency in deep duff and upper soil layers. ... Haines, D.A. 1988. A lower atmospheric severity index for wildland fire. National Weather Digest. Vol 13. No. 2:23-27.

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WebDec 1, 2024 · The C-Haines index is defined as C = C a + C b. Reanalysis data are commonly used to derive the C-Haines index ( Dowdy and Pepler, 2024, Dowdy et al., 2024 ). We define an extreme FFDI or C-Haines event as when the index is above the 95th percentile of the 1958–2024 climatology. WebFire Weather Concerns for the Plains; Heavy Rainfall for Southeast; Snowmelt and Potential Flooding Northwest. Drier and warming temperatures will bring multiple hazards …

WebSep 6, 2024 · Low fire weather concerns today through Wednesday as winds stay below critical thresholds. Min RH values remain 10 to 20 percent. A chance for light showers exists in the Sacramento Mountains this afternoon with a slim chance for a lightning strike or two. Light rain showers are possible again on Tuesday and Wednesday. WebFire Weather: Aviation Weather: Temperature (°F) Dewpoint (°F) Wind Chill (°F) Surface Wind . Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Snow Freezing Rain Sleet Fog: Mixing Height . Haines Index Lightning Activity Level Trans. Wind . 20ft Wind . Vent Rate (x1000 mph-ft) Pressure (in) Davis Stability Index ...

WebHow to read a point forecast. The graphics below are for relative humidities, from the most current time to 24 hours. The graphics below are for wind speeds/direction, from the most current time to 24 hours. The graphics … WebSep 24, 2024 · We define a new fire weather index called the Hot-Dry-Windy Index (HDW). HDW uses the basic science of how the atmosphere can affect a fire to define the meteorological variables that can be predicted at synoptic-and meso-alpha-scales that govern the potential for the atmosphere to affect a fire.

WebOct 1, 2024 · Active fire seasons were more likely to have a significant correlation between the weather variables and wildfires, the Fire Weather Index (FWI) alone was not an accurate predictor for wildfires in California and Nevada, and fire weather is highly dependent upon the region and season. ... Haines, D.A. A lower atmospheric severity …

WebFire Weather Stations; NFDRS Fuel Model; Other. Links; Long Term Analyst Resources; Weather and fire behavior links ... Fire Danger Rating; Haines Index; Dry Lightning; Potential Lightning Ignition; Lightning Efficiency; NDFD Fire Danger Forecasts; Weather. Fire Weather; Map Data; Google Earth Map Data; hall the hidden dimensionWebNov 26, 2024 · In addition to the FFDI, which is based on weather conditions near the surface, we used the Continuous Haines (C-Haines) index 46 to represent dangerous weather conditions for wildfires... burgundy polo shirt long sleeve mensWebMay 8, 2024 · The Haines Index is intended to provide information on how midtropospheric conditions could lead to large or erratic wildfires. Only a few studies have evaluated its performance and those are primarily single fire studies. burgundy pool table cloth