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Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Temperatures reaching eighty degrees or higher in March across central and northeast South Dakota is a rare occurrence, and for this to occur in mid-March is extremely rare.  On March 16th, several locations across the area set record highs by topping the 80 degree mark including Aberdeen, Mobridge, and Pierre.  Sisseton and Watertown also set records for March 16th. Aberdeen topped out at 81 degrees, Mobridge reached 83 degrees, with 86 degrees at Pierre.  The 86 degrees at Pierre was rare as they have only reached 85 degrees or higher four previous times, all occurring at the end of March. Thus, the March 16th 86 degree reading at Pierre was also the warmest temperature occurring this early in the season. The previous highest March temperature reading of 87 degrees occurred on March 27th, 1988. The 81 degrees at Aberdeen was also the warmest temperature reading occurring this early in the season.  The previous warmest reading was 84 degrees occurred on March 18th 1921.  The 83 degrees at Mobridge was also the warmest temperature this early in the season.  The previous reading was 84 degrees on March 23rd, 1939.

The tables below show the number of times 80 degrees or higher have occurred, not including Friday, March 16th, 2012 along with the warmest temperatures ever recorded in March.  Record temperatures are expected to continue into the weekend with more 80 degree or higher temperatures likely occurring at several locations.   In fact, some of the all-time record highs may be broken on Sunday, March 18th.

 

Locations

# times 80 degrees or higher

Aberdeen

8

Pierre

25

Mobridge

7

Sisseton

4

Watertown

6

 

 

Locations

Highest all-time March Temperature

Date

Aberdeen

86

3/31/1946

Pierre

87

3/27/1988

Mobridge

85

3/20/1911

Sisseton

82

3/31/1963

Watertown

82

3/18/1921