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<br />t, erL <br /> <br />\.~,l L :]...., i <br /> <br />The inputs for KBDI are weather station latitude, mean annual precipitation, maximum dry <br />bulb temperature, and the last 24 hours of rainfall. Reduction in drought occurs only when I <br />rainfall exceeds 0.20 inches (called net rainfall). The computation steps involve reducing the <br />drought index by the net rain amount and increasing the drought index by a drought factor. <br />KBDI levels and its relationship to expected fire potential are reflected in Table 11, "The <br />Keetch-Byram Drought Index (KBDI)." <br /> <br /> <br />Soil moisture and large class fuel moistures are high and <br />do not contribute much to fire intensity. Typical of <br />spring dormant season following winter precipitation <br />shallow-rooted trees pushed over. <br /> <br />Typical of late spring, early growing season. Lower litter <br />and duff layers are drying and beginning to contribute to <br />fire intensity. <br /> <br />Typical of late summer, early fall. Lower litter and duff <br />layers contribute to fire density and will burn actively. <br /> <br />Often associated with more severe drought with <br />increased wildfire occurrence. Intense, deep-burning <br />fires with significant downwind spotting can be I <br />expected. Live fuels can also be expected to burn <br />actively at these levels. <br /> <br />On December 8, 2003, the Texas Forest Service Website listed the following KBDI for Hays <br />County: <br /> <br />Mean <br />554 <br /> <br />Max <br />696 <br /> <br />Min <br />271 <br /> <br />The Texas Forest Service responded to 848 fire events in Texas in 2003 (January 1 through <br />December 8, 2003) that resulted in 33,821 acres damaged. <br /> <br />TexasWaterInfo.net published the Palmer Drought Severity Index (PDSI) Map created by the <br />Texas water Development Board as of October 15, 2005. Hays County is located in the South <br />Central (Region 7) area and mapped as -1.41 PDSI which equates to "Mild Drought" based on <br />data courtesy of Climate Prediction Center NCEP-NWS-NOAA. <br /> <br />2.8 Hazardous Material (HAZMA T) Incident <br /> <br />[Cross reference - Figures 2.12.1 and 2.12.2] <br /> <br />I <br /> <br />Hazard Identification: <br />Research for the Hays County Mitigation Plan included review of the NCTCOG's Multi- <br />Hazard Risk Assessment Survey pel1aining to hazardous materials releases as one of the top <br /> <br />Hays County, Texas <br />Mitigation Plan <br />69 <br />