REV03799 - Laserfiche WebLink

Home Browse Search

86 • SOIL SURVEY • TABLE 11.-Temperature and precipitation IData on snow cover from Monte Vista. Other data from Del Norte, elevation 7,880 Ceet! Temperature Precipitation Two years in 10 will One year in 10 have at least 4 days will have- Average Average with- number depth of Month Average Average Average _ of days snow on daily daily _ monthly __ with snow days with maximum minimum Maximum Minimum total cover of snow cover tempera- tempera- 0.1 inch of 0.1 inch tore equal tore equal Less More or more or more [o or to or than- than- higher lower than- than- °F °F °F °F lndve lncWe Inchre lnrM1re January_____________ 36 6 48 -9 0.46 0.1 1.1 15 4 February____._______ 40 11 54 -6 .29 .1 .6 10 3 March. __ _ _ 49 19 6l .50 .1 l.? 4 3 April________________ 5S ?7 70 1R .77 .1 1.6 1 3 May-_ _ _ 67 35 77 ?6 .87 .1 2.4 (') 1 June-__________ _ 76 42 84 35 .59 .2 1.5 0 ____ __ July________ ________ 80 47 86 42 I.I9 .4 2.4 0 ___________ 4ugust______ ___ ._ 78 46 83 40 1.57 .5 2.8 0 ______. .__ September__________. 73 39 S1 3? .88 .1 1.7 (') 1 October_______.. .__ 63 30 73 21 .82 .1 2.5 (') 1 November_________._ 48 18 60 ? .37 .1 1.1 I 4 December..__._______ 38 9 51 -5 .34 .1 .9 8 5 Year__________ _ 59 27 r87 ~-14 8.65 5.2 13.3 39 4 ' Less than 0.5 day. ~ Average annual maximum. ~ Average annual minimum. TABLE 12.-Probabilities of last freezing tentperahlres in spring and firs) in Jall IAII data lrom Del Norte, elevation 7,880 (eetl Dales for given probability and temperature Probability 16° F 20° F ''24° F 28° F 3Z° F or lower or lower ar lower or lower or lower Spring: 1 year in 10 later than _ _ _ _ _ _ _ _ _ April 25 May 8 May 17 June 3 June 18 2 years in 10 later than_____ _ April 19 May ? A1ay ] 1 May 28 June 12 ~ years in 101a[er [han_________ April B April ''21 April 30 May 17 June 1 Fall: 1 year in 10 earlier [han________ October 20 October I1 October 2 September 23 September 9 2 years in ]0 earlier than-_ _ October 25 October l6 October 7 September 27 September 14 years in 30 earlier Ihan_ ___ _. November 3 October 25 October 16 October 7 September ?3 Rainfall is lowest in the eastern part of the Area, averaging about7inches at Monte Vista. It increases to the ]vest, averaging about 8.5 inches at Del Not•te and about 12 inches at South Fork. The mountains in the southwestern part of the Area receive about 15 to 20 inches of precipitation. About 80 percent of the annual precipitation occw's from April to October. July and August receive the highest amount. June, the month [then crops need moisture to germinate and start grow- ing, is the driest month. Most of the rain falls as light showers from thunderstorms that form over the moun- tains and move into the valley during the afternoon. Most of these showers are light and benefit growing crops only slightly. Hail frequently falls in some areas during thunderstorms, causing extensive damage to crops. At Del Nate in 40 years of recm•tl, the highest annual precipitation was 16.42 inches and the lowest tvas 4.75 inches. During this period 8 years had more than ]1.0 inches of precipitation and 11 years less than 7.0 inches. At Monte Vista in 23 years of record, the highest annual precipitation was 13.06 inches and the lowest Was 3.75 inches. During this period 2 years had more than 11.0 inches of precipitation and 8 year's less than 6A inches. Summer is characterized by maximum temperature