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HomeMy WebLinkAbout10.20.20 NWS Sacramento_ Critical Fire Weather Conditions This Week into Early Next Week From:Messina, John@CALFIRE To:Alpert, Bruce;Bennett, Robin;Clerk of the Board;Connelly, Bill;Cook, Holly;Lambert, Steve;Lucero, Debra; McCracken, Shari;Paulsen, Shaina;Pickett, Andy;Ring, Brian;Ritter, Tami;Rodas, Amalia;Sweeney, Kathleen; Teeter, Doug Subject:NWS Sacramento: Critical Fire Weather Conditions This Week into Early Next Week Date:Tuesday, October 20, 2020 10:42:59 AM Attachments:Elevated Fire Weather Conditions.png RedFlagWarning.png Fire Weather Outlook.png WindGusts_TueWed.png WindGusts_WedThu.png NWS Sacramento Partner Email 20102020.pdf ATTENTION: This message originated from outside Butte County. Please exercise judgment before opening .. attachments, clicking on links, or replying. Good morning county leader, Incase you are not aware of the upcoming weather, I have attached the 7 day fire weather forecast. While the winds are not as strong as we have seen in past events, the duration of the off and on north winds is concerning. We are watching the situation closely and will add extra fire department staffing and equipment should the situation dictate it. Have a great week. John Messina UNIT CHIEF CALFIRE – BUTTE UNIT Butte County Fire Department Cities of Biggs, Gridley & Town of Paradise Office# 530 538-7111 From: NWS Sacramento - NOAA Federal <nws.sacramento@noaa.gov> Sent: Tuesday, October 20, 2020 9:30 AM Subject: NWS Sacramento: Critical Fire Weather Conditions This Week into Early Next Week Critical Fire Weather Conditions This Week into Early Next Week National Weather Service - Sacramento 9:30am,October20,2020 Point of Contact:NWSOperations(24/7/365)(916)979-3045 KEY POINTS Periods of dry northerly and easterly winds this week will bring elevated to critical fire weather concerns Red Flag Warning is in effect through Wednesday morning (upgraded; see RedFlagWarning.png) Fire Weather Watch in effect late Wednesday night through Friday (added; see RedFlagWarning.png) Cooling trend late week into the weekend with chance of light showers Saturday CHANGES FROM PREVIOUS UpdatesareHighlighted WEATHER IMPACT LEVEL: Valley: Tue 10/20Wed 10/21Thu 10/22Fri 10/23Sat 10/24Sun 10/25Mon 10/26 Fire WeatherFire WeatherFire WeatherFire WeatherFire WeatherFire Weather Mountains & Foothills: Tue 10/20Wed 10/21Thu 10/22Fri 10/23Sat 10/24Sun 10/25Mon 10/26 Fire WeatherFire WeatherFire WeatherFire WeatherLight ShowersFire WeatherFire Weather WeatherImpactLegend Little to NoneLowMediumHighExtreme Impacts Critical fire weather conditions due to very low humidities and gusty winds Easier fire starts and potential of rapid spread of any new or existing fires Forecast Confidence High for critical fire weather concerns this week High for cooler temperatures late this week Low for light shower chances Saturday Timing Today - Early Wednesday Winds (see WindGusts_TueWed.png) North to east winds 10 to 20 mph with gusts up to 20-30 mph, locally higher along ridgetops and favored valleys/canyons Relative Humidity 12 to 20% in the afternoon 25 to 45% overnight, locally lower in the foothills Wednesday - Friday (updated) Winds decrease during the day Wednesday but remain locally breezy from the north with Valley gusts up to 15-20 mph Wednesday night - early Friday: Stronger north to east winds possible 15 to 25 mph with gusts up to 30-45 mph, locally higher (increased; see WindGusts_WedThu.png) Relative Humidity 8 to 20% in the afternoon 20 to 40% overnight, locally lower in the foothills Cooling trend with temperatures near normal by Friday (see MaxT Loop.gif) Saturday Light showers possible over the mountains Weather Summary Multipleperiodsofbreezynorthtoeastwindsareforecastthisweek.Thesedry,northerlyto easterlywindscombinedwithlowrelativehumidityvaluesanddryfuelswillleadtoperiods ofelevatedtocriticalfireweatherconditions.Breezywindswillcontinueonthewestsideof theValleyintotheSierrafoothillsnorthofI-80todaythroughWednesdaymorning.Lesswind isexpectedWednesdayafternoon,thoughlocallybreezyconditionscontinue.However,a renewedburstofstrongerwindsispossibleWednesdaynightandintoFridaymorningthat willcreatecriticalfireweatherconditions.Temperatureswillcooltonearorbelownormalby latethisweek,alongwiththepotentialofsomelightshowersinthemountainsonSaturday. ThereisanotherchanceforbreezywindsandfireweatherconcernsonSundayandMonday. NWSwillprovideupdatesasthesituationdevelops.Repliestothisemailarenotmonitored.