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2024 Hennepin County All -Jurisdiction Hazard Mitigation Plan <br />Volume 2 — Hazard Inventory <br />Warning Products <br />Remarks <br />conditions, both meteorological <br />and non -meteorological, <br />suggest a substantial threat to <br />safe travel, such that WEA is <br />warranted to alert all devices in <br />the path of the squall. <br />Watch Product Name <br />Significant and dangerous winter weather is <br />As certainty about an event approach, it <br />possible, generally within 72 hours. Blizzard <br />may be "upgraded" to a warning. Many <br />conditions with visibility less than a quarter <br />become lower -standing Advisories, and <br />mile due to falling and/or blowing snow and <br />about 1/10 Watches end up with no <br />frequent wind gusts to 35 mph, for three <br />Warning orAdvisory product. <br />hours or more. Six or more inches of snow <br />with an event, not to exceed 48 hours in <br />length. A quarter inch of ice. A half inch of <br />sleet. Forecaster discretion: a combination of <br />snow, sleet, freezing rain, blowing snow <br />and/or wind leading to significant impacts. <br />Advisory Product Name <br />Winter weather that causes inconvenience <br />but is not dangerous if proper caution is <br />exercised. 3-6 inches of snow. Bowing snow, <br />causing local visibility reductions. Less than a <br />half inch of sleet. Less than a quarter inch of <br />ice. Forecast discretion: a combination of light <br />snow, sleet, freezing rain, blowing snow, <br />and/or wind leading to impacts. <br />In ideal situations, progression of NWS products used will include a Hazardous Weather Outlook, Watches, <br />and then Warnings or Advisories. <br />4.3.11.10. Critical Values & Thresholds <br />The baseline for a winter storm product (i.e., Watch or Warning) is generally 6 inches in 12 hours or 8 <br />inches in 24 hours. The baseline for an Advisory is generally 3 inches in 12 hours. However, NWS <br />forecasters may issue Watches, Warnings and Advisories at lesser thresholds if other hazards or concerns <br />warrant a different standard. <br />4.3.11.11. Preparedness <br />Before the storm strikes, homes, offices, and vehicles should be stocked with an emergency kit. <br />At home or work, primary concerns are primary concerns are loss of heat, power and telephone service, <br />and a shortage of supplies in prolonged or especially severe and disruptive events. Essential supplies <br />include: <br />181 <br />