RECORD EVENT REPORT NATIONAL WEATHER SERVICE LA CROSSE WI 655 AM CDT MON JUN 3 2013 ...MAY RECORDS IN ROCHESTER MN... 1. WETTEST MAY... DURING MAY OF 2013...ROCHESTER INTERNATIONAL AIRPORT RECEIVED 12.26 INCHES OF PRECIPITATION. THIS SURPASSED THE PREVIOUS MAY PRECIPITATION RECORD OF 8.41 INCHES SET IN 1982. 2. GREATEST NUMBER OF MAY DAYS WITH MEASURABLE PRECIPITATION... DURING MAY OF 2013...MEASURABLE PRECIPITATION /0.01 INCHES OR GREATER/ FELL ON 20 DAYS. THIS TIED 1888...1915...1983...AND 2004 FOR THE GREATEST NUMBER OF MAY DAYS WITH MEASURABLE PRECIPITATION. 3. GREATEST NUMBER OF MAY DAYS WITH A HALF INCH OR MORE OF PRECIPITATION... DURING MAY OF 2013...A HALF INCH OR MORE OF PRECIPITATION FELL ON 8 DAYS. THIS SURPASSED THE PREVIOUS RECORD OF 7 DAYS IN 2001. 4. GREATEST NUMBER OF MAY DAYS WITH AN INCH OR MORE OF PRECIPITATION... DURING MAY OF 2013...AN INCH OR MORE OF PRECIPITATION FELL ON 6 DAYS. THIS SURPASSED THE PREVIOUS RECORD OF 4 DAYS IN 1982. 5. GREATEST NUMBER OF MAY DAYS WITH 2 INCHES OR MORE OF PRECIPITATION... DURING MAY OF 2013...2 INCHES OR MORE OF PRECIPITATION FELL ON 2 DAYS. THIS SURPASSED THE PREVIOUS RECORD OF 1 DAY IN 1912...1945...1970...AND 2000. 6. GREATEST 1-DAY MAY SNOWFALL... ON MAY 2ND...THE OFFICIAL NATIONAL WEATHER SERVICE SNOW OBSERVER NEAR ROCHESTER INTERNATIONAL AIRPORT MEASURED 14 INCHES OF SNOW. THIS SURPASSED THE PREVIOUS 1-DAY SNOWFALL RECORD FOR MAY OF 1.2 INCHES ON MAY 5 1944. 7. GREATEST 2-DAY MAY SNOWFALL... FROM MAY 2ND THROUGH MAY 3RD...THE OFFICIAL NATIONAL WEATHER SERVICE SNOW OBSERVER NEAR ROCHESTER INTERNATIONAL AIRPORT MEASURED 14.5 INCHES OF SNOW. THIS SURPASSED THE PREVIOUS 2-DAY SNOWFALL RECORD FOR MAY OF 2.0 INCHES ON MAY 4-5 1944. 8. SNOWIEST MAY... DURING MAY OF 2013...THE OFFICIAL NATIONAL WEATHER SERVICE SNOW OBSERVER NEAR ROCHESTER INTERNATIONAL AIRPORT MEASURED 14.5 INCHES OF SNOW. THIS SURPASSED THE PREVIOUS RECORD FOR THE MONTH OF MAY OF 2 INCHES SET IN 1944 . 9. GREATEST MAY SNOW DEPTH... AT 7 AM ON MAY 2ND...THE OFFICIAL NATIONAL WEATHER SERVICE SNOW OBSERVER NEAR ROCHESTER INTERNATIONAL AIRPORT MEASURED 11 INCHES OF SNOW ON THE GROUND. THIS SURPASSED THE PREVIOUS RECORD FOR THE MONTH OF 1 INCH SET BACK IN 1954 /MAY 3RD/. AT 7 AM ON MAY 3RD...THE OFFICIAL NATIONAL WEATHER SERVICE SNOW OBSERVER NEAR ROCHESTER INTERNATIONAL AIRPORT MEASURED 13 INCHES OF SNOW ON THE GROUND. THIS SURPASSED THE PREVIOUS RECORD FOR THE MONTH OF 11 INCHES SET ON MAY 2 2013. 10. GREATEST AVERAGE MAY SNOW DEPTH... DURING MAY OF 2013...THE AVERAGE SNOW DEPTH MEASURED BY THE OFFICIAL NATIONAL WEATHER SERVICE SNOW OBSERVER NEAR ROCHESTER INTERNATIONAL AIRPORT WAS 1.1 INCHES. THIS SURPASSED THE PREVIOUS RECORD OF A TRACE SET BACK IN 1945...1947...1956...1984... 1989...AND 1997. BOYNE
Last modified: June 3, 2013 Greg Spoden, DNR Climatologist
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