{"id":12948,"date":"2015-11-13T17:07:14","date_gmt":"2015-11-14T01:07:14","guid":{"rendered":"http:\/\/stormbruiser.com\/chase\/?p=12948"},"modified":"2015-11-13T17:11:29","modified_gmt":"2015-11-14T01:11:29","slug":"november-13-2015-local-minimum-temperature-study","status":"publish","type":"post","link":"http:\/\/stormbruiser.com\/chase\/2015\/11\/13\/november-13-2015-local-minimum-temperature-study\/","title":{"rendered":"November 13, 2015  Local minimum temperature study"},"content":{"rendered":"<pre style=\"color: #000000;\">The offshore wind pattern of the past few days has spread very dry air over SoCal\r\nand has resulted in a very wide range of minimum temperatures in and around the \r\nSan Fernando and Conejo valleys and the Santa Monica Mountains.  Santa Ana winds \r\nblew all night long in many locales and resulted in mild minimums, while some \r\nwind-protected frost pockets were calm with frigid lows.\r\n\r\nHere are low temps for Thu and Fri morning, November 12 and 13, 2015, at selected\r\nstations in the San Fernando Valley, primarily the western SFV.  Included are the\r\nfamiliar NWS stations and some private\/home Weather Underground (WU) and MADIS\r\nstations which I consider trustworthy (at least on minimum temps!).\r\n\r\nlow temps, flatlands SFV\r\n\r\nThu Fri\r\n40  48  Woodland Hills\/Pierce College\r\n36  42  western Woodland Hills WU (Woodlake and Victory)\r\n39  58  West Hills WU (Roscoe and Woodlake)\r\n39  44  Winnetka CW7387 (Sherman Way and Winnetka)\r\n50  67  Chatsworth DW0345 (Plummer and De Soto)\r\n58  65  CSU Northridge\r\n45  49  Van Nuys AP\r\n42  43  Van Nuys WU (Kester and Vanowen)\r\n40  45  Burbank AP\r\n42  44  Studio City DW6087 (Ventura and Colfax)\r\n42  44  Encino WU (Ventura and Hayvenhurst)\r\n\r\n\r\nlow temps, hilltop stations, Santa Monica Mountains and vicinity of SFV\r\n\r\nThu Fri\r\n56  63  Cheeseboro RAWS, north of Agoura, elev. 1707'\r\n55  62  Topanga RAWS, south of Woodland Hills, elev. 1600'\r\n55  63  Calabasas Park Belmonte WU, elev. 1438'\r\n57  64  Malibu Hills RAWS, elev. 1575'\r\n55  62  Porter Ranch above Northridge DW4339, elev. 1634'\r\n\r\n\r\n\r\nlow temps, valley bottoms and frost pockets, Agoura\/WLV\/T.O. area and Santa Monica Mountains\r\n\r\nThu Fri\r\n53  66  Thousand Oaks VCAPCD (Moorpark and Avenida de las Flores, T.O. High School)\r\n36  41  Westlake Village\/Reid EW4921 (Hillcrest and Westlake)\r\n32  39  Old Agoura WU\r\n31  36  Agoura\/Lost Hills WU\r\n35  43  Bell Canyon WU\r\n27  32  Lobo Canyon WU (south of WLV)\r\n25  30  Paramount Ranch WU (south of Agoura, near Cornell and Mulholland)\r\n30  msg Topanga DW5544\r\n28  32  Malibu Canyon RAWS\r\n59  67  Simi Valley VCAPCD\r\n\r\n\r\n\r\nThe low temperature differences between the area hilltops and the coldest frost pockets\r\n on Thu and Fri are about as large as you'll see for this region.  On Thursday, the\r\n coldest stations in the western San Fernando valley had mid-upper 30s, while the\r\n hilltops were in the mid 50s.  At the same time, the outlying frost pockets were\r\n in the mid 20s to low 30s.  The coldest stations are those in the well-protected\r\n low spots around Agoura.  The Paramount Ranch station (which had 25F on Thu) is\r\n located a little bit north of and slightly higher than Paramount Ranch.  The ACTUAL\r\n ranch may be even a little colder than this station, as it is closer to the valley\r\n bottom along the stream.\r\n\r\n\r\nOn Thursday night and Friday morning the wind blew without interruption through\r\n Chatsworth, Simi Valley, and Thousand Oaks.  Minimums were 66F to 67F at the stations\r\n for these places.  At the Agoura-area frost pockets, protected from the wind, lows were\r\n 30 to 37 degrees colder!  Paramount Ranch dropped to 30F this morning, 33 degrees colder\r\n than the nearby hilltop stations and 37 degrees colder than Chatsworth and 36 degrees\r\n colder than Thousand Oaks, both of which are similar in elevation.  Malibu Canyon and\r\n Lobo Canyon were almost as cold on Friday morning, with 32F.\r\n\r\n\r\nThe NWS often mentions Ojai as its favorite cold spot in Ventura County.  The town\r\n usually has light winds during Santa Ana wind events, so the nights here are cold\r\n compared to the breezy areas.  The NWS Ojai station is very close to the stream\r\n through the valley, and is an impressive frost pocket station. It dropped to 29F\r\n on Thursday, but that was still warmer than some of the Agoura-area stations.  The\r\n other stations in the Ojai valley run several degrees warmer than the Ojai NWS station.\r\n\r\n\r\nlow temps, Ojai area\r\nThu Fri\r\n29  34  Ojai NWS --- East Ojai WU elev. 773'\r\n35  40  Ojai VCAPCD elev. 774' -- Ojai Ave WU\r\n35  40  Ojai South Carillo Rd WU, elev. 758'\r\n44  50  Ojai Fairview Road WU, elev. 1056'\r\n\r\nAnd, the point here, is that all of these valleys have isolated frost pockets and\r\n\"cold spots\" with impressively low minimums when the wind stops on clear and dry\r\nnights.  The actual location of the weather station with regard to terrain and ground \r\ncover is a huge factor when it comes to how cold (or not cold) your favorite town is!\r\n\r\n<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The offshore wind pattern of the past few days has spread very dry air over SoCal and has resulted in a very wide range of&#8230;&nbsp;<a href=\"http:\/\/stormbruiser.com\/chase\/2015\/11\/13\/november-13-2015-local-minimum-temperature-study\/\">[Read&nbsp;More]<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[62,58,49,1],"tags":[],"class_list":{"0":"post-12948","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-62","7":"category-climate","8":"category-local-conejo-valley-and-san-fernando-valley-area","9":"category-uncategorized","10":"entry"},"_links":{"self":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts\/12948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/comments?post=12948"}],"version-history":[{"count":4,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts\/12948\/revisions"}],"predecessor-version":[{"id":12952,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts\/12948\/revisions\/12952"}],"wp:attachment":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/media?parent=12948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/categories?post=12948"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/tags?post=12948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}