Miles City Montana with 7.50 inches of precipitation since 8 May
has accumulated more than 3 times their normal May precipitation
in the past two weeks.  Miles City’s mean annual precipitation is 13.4 inches.

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
504 PM MDT SAT MAY 21 2011
…RECORD DAILY MAXIMUM RAINFALL SET AT MILES CITY MT…
A RECORD RAINFALL OF 0.9 INCH(ES) WAS SET AT MILES CITY MT TODAY.
THIS BREAKS THE OLD RECORD OF 0.7 SET IN 1957.
THIS ALSO BREAKS THE RECORD FOR THE TOTAL RAINFALL FOR THE MONTH
OF MAY WITH 7.2 INCHES. THE PREVIOUS RECORD WAS 6.81 INCHES SET IN
1978.