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The National Weather Service issues a similar high wind warning (Specific Area Message Encoding code: HWW) for high winds on land. The criteria vary from place to place; however, in most cases, the warning applies to winds of 40 miles per hour (64 km/h) to 73 miles per hour (117 km/h) for at least 1 hour; or any gusts of 58 miles per hour (93 km/h) to 114 miles per hour (183 km/h) on land.
The Santa Anas are katabatic winds (Greek for "flowing downhill") arising in higher altitudes and blowing down towards sea level. [7] The National Weather Service defines Santa Ana winds as "a weather condition [in southern California] in which strong, hot, dust-bearing winds descend to the Pacific Coast around Los Angeles from inland desert regions".
Panorama of a strong shelf cloud, which can precede the onset of high winds. High winds are known to cause damage, depending upon their strength. Wind speeds as low as 23 knots (43 km/h) may lead to power outages when tree branches fall and disrupt power lines. [15] Some species of trees are more vulnerable to winds.
Now, the NWS has issued another PDS red flag warning that between 4 a.m. local time this Tuesday and noon on Wednesday dangerous so-called Santa Ana winds are coming back, albeit weaker than last ...
Cold air on its own can be dangerous if a person isn't dressed for the weather, but high winds, which lead to wind chill, pose a significant risk, the National Weather Service said.
PDS high wind warnings are issued by the National Weather Service when non-convective winds are expected to be especially damaging or dangerous to people and property, beyond what would be expected of a typical high wind warning.
Wind events occur in October as well and that is typically the end of the fire season, which usually begins in June or July, since the gusts arrive before the first winter rains do. The problem in ...
Knowing the wind sampling average is important, as the value of a one-minute sustained wind is typically 14% greater than a ten-minute sustained wind. [16] A short burst of high speed wind is termed a wind gust; one technical definition of a wind gust is: the maxima that exceed the lowest wind speed measured during a ten-minute time interval by ...