Fourth Driest May on Record Possible
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Fourth Driest May on Record Possible
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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
930 AM MDT WED MAY 27 2009
...FOURTH DRIEST MAY ON RECORD...
MAY 2009 HAS SEEN A DRASTIC CHANGE IN PRECIPITATION AMOUNTS AND
FREQUENCY SINCE APRIL...ESPECIALLY FOR THE SECOND HALF OF
MAY. ALTHOUGH BILLINGS HAD MEASURABLE PRECIPITATION ON 7 OF THE
FIRST 15 DAYS OF MAY...ONLY ONCE SINCE THE 15TH HAVE WE RECEIVED
MEASURABLE PRECIPITATION. IF THE AIRPORT WERE TO REMAIN DRY FOR
THE REMAINDER OF THE MONTH...WHICH SEEMS LIKELY WITH THE CURRENT
WEATHER PATTERN...MAY 2009 WILL BE THE FOURTH DRIEST MAY ON
RECORD...SINCE 1934.
...MAY PRECIPITATION...
2001 - 0.22 INCHES
1993 - 0.40 INCHES
1937 - 0.53 INCHES
2009 - 0.63 INCHES
1958 - 0.65 INCHES
1944 - 0.73 INCHES
1973 - 0.73 INCHES
1969 - 0.78 INCHES
IN AN ANALYSIS OF JUNE THROUGH AUGUST PRECIPITATION...ONLY ONE
YEAR OF THOSE LISTED ABOVE WAS DRIER THAN NORMAL...1973...WITH
ONLY 2.33 INCHES OF PRECIPITATION FOR THE SUMMER.
INTERESTINGLY...OF THE 7 DRIEST MAYS ON RECORD...3 WERE NOT ONLY
FOLLOWED BY WETTER THAN NORMAL SUMMERS....BUT WERE SOME OF THE
WETTEST SEASONS ON RECORD.
...JUNE THROUGH AUGUST PRECIPITATION...
1944 - WETTEST SUMMER ON RECORD WITH 9.90 INCHES
1969 - 5TH WETTEST SUMMER ON RECORD WITH 7.85 INCHES
1993 - 7TH WETTEST SUMMER ON RECORD WITH 7.82 INCHES
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