Laserfiche WebLink
2024 Hennepin County All -Jurisdiction Hazard Mitigation Plan <br />Volume 2 — Hazard Inventory <br />interpretation of computer forecasts. This strategy is employed by both the monthly and seasonal drought <br />outlooks, which are issued monthly by the National Oceanic and Atmospheric Administration, National <br />Weather Service, and Climate Prediction Center as an operational effort geared toward infusing such <br />advances into drought predictability. Although predicting drought on any scale remains a challenge, <br />progress in understanding global -to -regional scale climate -system phenomena provides hope for <br />improving drought prediction at longer lead times. <br />Early warning of drought onset, and characterization of its evolving environmental and economic impacts, <br />can be further enhanced using regional -scale early warning systems that promote sustained partnership <br />networks linking meteorological and climatological information providers to water, agriculture, and other <br />private and public management communities. <br />4.3.8.11. Critical Values and Thresholds <br />According to the Minnesota Statewide Drought Plan, there are five drought phases/triggers that follow <br />closely to the drought intensity categories. TABLE 4.3.8A describes the drought triggers from the <br />Minnesota Drought Plan. These triggers are based on conditions for the different watersheds across the <br />state. <br />TABLE 4.3.8A Drought Triggers <br />Drought Phase/Triggers <br />Conditions <br />Non -Drought Phase <br />A signification portion of the watershed is not under drought <br />conditions according to the U.S. Drought Monitor. <br />Drought Watch Phase <br />A significant portion of the watershed is "abnormally Dry" or in a <br />"moderate Drought". <br />Drought Warning Phase <br />A significant portion of the watershed is in a "Severe Drought", or <br />from public water suppliers using the Mississippi River, the average <br />daily flow at the USGS gage near Anoka is at or below 2000 cfs for <br />five consecutive days. <br />Restrictive Phase <br />A significant portion of the watershed is in an "Extreme Drought", <br />or for public water suppliers using the Mississippi River, the <br />average daily flow at the USGS gage near Anoka is at or below <br />1500 cfs for five consecutive days. <br />Emergency Phase <br />A significant portion of the watershed is in an "Exceptional <br />Drought", or highest priority water supply needs are not met, or <br />there are threatened or actual electricity shortages due to cooling <br />water supply shortages, or for public water suppliers in the Twin <br />Cities, the average daily flow of the Mississippi Rover UGSG gage <br />near Anoka is at or below 1000 cfs for five consecutive days. <br />148 <br />