Microburst Damage Near Shepherd July 14, 2011
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Microburst Damage Near Shepherd July 14, 2011
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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
915 PM MDT FRI JUL 15 2011
..MICROBURST CAUSES DAMAGE NORTH OF SHEPHERD THURSDAY EVENING...
A STORM SURVEY WAS CONDUCTED BY THE NATIONAL WEATHER SERVICE IN
BILLINGS ON FRIDAY EVENING DUE TO REPORTS OF DAMAGE RELATED TO A
THUNDERSTORM THURSDAY EVENING.
A WET MICROBURST CAUSED CROP...TREE...AND SOME MINOR DAMAGE TO
HOMES NORTH OF SHEPHERD THURSDAY EVENING. THE MICROBURST WAS
CENTERED NEAR THE INTERSECTION OF SCANDIA AND C A ROADS AND CAUSED
WINDS ESTIMATED AT 90 MPH. SOME CROPS WERE LAIN OVER OR HAD THEIR
LEAVES STRIPPED BY THE STRONG WINDS AND COPIUS AMOUNTS OF SMALL
HAIL. SEVERAL DOZEN TREES WERE UPROOTED OR SNAPPED WITH DIAMETERS
UP TO ONE AND A HALF FEET. THERE WAS ALSO MINOR DAMAGE TO SOME
HOMES. THE DAMAGED AREA WAS APPROXIMATELY THREE SQUARE MILES.
A WET MICROBURST IS CAUSED WHEN THE UPDRAFT OF A THUNDERSTORM
WEAKENS AND LARGE AMOUNTS OF SUSPENDED RAIN AND HAIL DRAG STRONG
WINDS DOWN TO THE GROUND. THIS CAUSES STRONG STRAIGHT LINE WINDS
WHEN THE MICROBURST HITS THE GROUND AND SPREADS OUT.
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