On the 30th the high of 98 tied the record for the date set in 1986. From the 28th through the 30th, highs were in the 90s for the first time since September. Starting on the 27th, temperatures rose each day as the ridge strengthened. #IDwx /Bx1tdPW9MHĪn upper-level high pressure ridge building over the coast on the 24th started a warming trend which was briefly interrupted by a weak Pacific cold front on the 26th. ❄️ Check out the scene at Bogus this morning! Several inches of snow fell overnight. Below-normal temperatures would continue through the 24th. The record coolest high temperature for the date is 48 in 1902. With a high of only 51 degrees, the 20th was the coolest day of the month. New daily rainfall records were set yesterday, including 0.80" at Boise (beat 0.56" set in 1985) and 0.54" at Baker City (beat 0.49" set in 1960). Here are the rainfall totals over the past 72 hours. Other parts of town were drenched by even heavier rain, including 1.31 inches at Boise State University. That day 0.80 inch of rain fell at the Boise Airport, breaking the previous record for the date of 0.56 inch in 1985. On the 20th it was centered directly over Idaho. Before moving inland on the 19th, it had deepened far enough down the coast to tap subtropical moisture southwest of California. On the 16th a much larger and colder trough from Siberia was nearing the west coast. The first significant precipitation of the month came on the 14th when 0.36 inch of rain fell at the airport as a low pressure trough crossed the area. A gust of 48 mph was measured at the Boise Airport. Strong west winds followed a cold front on the morning of the 6th. The first couple of weather systems, which came through on the 3rd and the 6th, brought only light precipitation. Between systems, southwest flow east of the low brought warmer air. It was responsible for steering weather systems into western North America. Temperatures averaged just over one degree above normal and precipitation was 40 percent above normal at Boise.Īn extensive upper-level low pressure system over the northeast Pacific was the dominant feature through the 17th.
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