Wabasha Severe Watches & Warnings NOAA Weather Radio

Public Information Statement
Statement as of 6:19 PM CDT on June 1, 2015

... A slightly warmer and wetter-than-normal Spring at Rochester MN...

During the Spring of 2015... both temperatures and precipitation were
above-normal at Rochester international Airport. It was the 13th wettest
Spring in Rochester MN. More details on these statistics can be found below.

Temperatures -

From March 1st through may 31st... Rochester international Airport had an
average temperature of 45.9 degrees. This was 0.2 degrees warmer than
the 1981-2010 normal of 45.7 degrees. The Table below contains the monthly
temperatures and their departures from normal for the Spring of 2014.

           Spring 2015 temperatures
               in Rochester MN

                  average departure
   month temperature from normal
   ----- ----------- -----------
   March 32.5 degrees +0.1 degrees
   April 47.7 degrees +1.0 degree
   may 57.7 degrees -0.4 degrees

   Spring 45.9 degrees +0.2 degrees

The average high temperature was 55.8 degrees. This was 0.4 degrees
warmer the 1981-2010 normal of 55.4 degrees.

The average low temperature was 36.1 degrees. This was 0.1 degrees
above the normal of 36.0 degrees.

The daily temperatures averaged above normal on 50 days /54.3 percent/...
below normal on 40 days /43.5 percent/... and normal on 2 days /2.1 percent/.

The warmest high temperature was 83 degrees on may 3rd.
The coldest high temperature was 9 degrees on March 5th.

The warmest low temperature was 61 degrees on may 7th.
The coldest low temperature was -12 degrees on March 5th.

Number of days with...

     maximum temperature 32 degrees or below 8 days
     maximum temperature 90 degrees or above 0 days
     minimum temperature 32 degrees or below 29 days
     minimum temperature 0 degrees or below 2 days


Precipitation - 13th wettest Spring

From March 1st through may 31st... Rochester international Airport
received 11.25 inches of precipitation. This was 2.50 inches wetter
than the 1981-2010 normal of 8.75 inches. Five of the 20 warmest
Springs have occurred since 2000. The Table below lists the
20 wettest Springs.

            Wettest Springs
            in Rochester MN
               1886-2015

rank precipitation year
---- ------------- ----
    1 21.90 inches 2013
    3 15.37 inches 2001
    4 15.09 inches 1888
    5 14.57 inches 1990
    6 12.85 inches 1982
    7 12.60 inches 1999
    8 12.37 inches 1973
    9 12.06 inches 1938
   10 11.91 inches 1991
   11 11.80 inches 1993
   12 11.46 inches 2011
   13 11.25 inches 2015
   14 11.16 inches 1951
   15 10.93 inches 2004
   16 10.91 inches 1965
   17 10.86 inches 1942
   18 10.61 inches 1930
   19 10.56 inches 1970
   20 10.49 inches 1954

The Table below contains the monthly precipitation totals and their
departures from normal for the Spring of 2015.

          Spring 2015 precipitation
               in Rochester MN

                precipitation departure
   month total from normal
   ----- ------------ -----------
   March 1.07 inches -0.81 inches
   April 4.93 inches +1.69 inches
   may 5.25 inches +1.62 inches

   Spring 11.25 inches +2.50 inches

The wettest Spring day was 1.34 inches on April 9th.

Measurable rain (0.01 inches or greater) fell on 36 days and trace
amounts fell on 8 other days.

Number of days with...

       0.01 inches or more 36 days
       0.10 inches or more 21 days
       0.50 inches or more 9 days
       1.00 inches or more 3 days

Snowfall -

From March 1st through may 31st... the snow observer near Rochester
international Airport recorded 12.4 inches of snow. This was 0.4 inches
above the 1981-2010 normal of 12.0 inches. The Table below contains
the monthly snowfall totals and their departures from normal for the
Spring of 2015.

             Spring 2015 snowfall
               in Rochester MN

                   snowfall departure
   month total from normal
   ----- ------------ -----------
   March 10.9 inches +2.2 inches
   April 1.5 inches -1.8 inches
   may 0.0 inches 0.0 inches

   Spring 12.4 inches +0.4 inches

The snowiest day was 7.4 inches on March 22nd.
Measurable snow fell on 6 days and trace amounts fell on another 4 days.

Snow depth -

The average snow depth was 1.2 inches. This equalled the long-term
average of 1.2 inches.

The greatest snow depth was 10 inches on March 25th.

Winds -

Average wind speed was 13.0 mph.

The highest sustained wind was 39 mph from the south on may 6th.

The highest wind gust was 56 mph from the southwest on may 6th.

Cloud cover -

Number of days...

        clear 0 to 3 tenths 45 days
        partly cloudy 4 to 7 tenths 28 days
        cloudy 8 to 10 tenths 19 days

Barometric pressure -

The lowest sea level pressure was 29.46 inches on April 20th.
The highest sea level pressure was 30.61 inches on March 5th.

... ... ... ... ... ... ... ... ... ... ... ..

... The Rochester MN climate summary for the season, from
3/1/2015 to 5/31/2015...

Climate normal period 1981 to 2010
climate record period 1886 to 2015

Weather observed normal depart last year's
                 value date(s) value from value date(s)
                                          normal
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .
temperature (f)
record
high 106 05/31/1934
low -31 03/01/1962
highest 83 05/03 mm mm 86 05/30
                                                          05/26
lowest -12 03/05 mm mm -15 03/02
avg. Maximum 55.8 55.4 0.4
avg. Minimum 36.1 36.0 0.1 32.2
mean 46.0 45.7 0.3 41.4
days Max >= 90 0 0.4 -0.4 0
days Max <= 32 8 6.7 1.3 15
days min <= 32 29 32.6 -3.6 42
days min <= 0 2 1.3 0.7 3

Precipitation (inches)
record
maximum mm mm
minimum mm mm
totals 11.25 8.75 2.50 8.57
daily avg. 0.12 0.10 0.02
days >= .01 36 33.8 2.2 40
days >= .10 21 18.6 2.4 21
days >= .50 9 5.5 3.5 6
days >= 1.00 3 1.6 1.4 0
greatest
24 hr. Total 1.58 mm
storm total mm
(mm/dd(hh)) mm

Snowfall (inches)
records
total mm 5
24 hr total mm
totals 12.4 12.0 0.4
liquid equiv 1.24 mm mm
since 7/1 50.4 51.9 -1.5
days >= trace 10 8.4 1.6
days >= 1.0 3 3.3 -0.3
greatest
snow depth 10 03/25
24 hr total 7.4 mm
storm total mm
(mm/dd(hh)) mm

Degree_days
heating total 1753 1809 -56
since 7/1 mm 7670 mm
cooling total 16 34 -18
since 1/1 16 34 -18

Freeze dates
record
earliest mm
latest mm
earliest mm
latest mm
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..

Wind (mph)
average wind speed 13.0
highest wind speed/direction 39/180 date 05/06
highest gust speed/direction 56/210 date 05/06

Sky cover
possible sunshine (percent) mm
average sky cover 0.40
number of days fair 49
number of days pc 21
number of days cloudy 22

Average rh (percent) 67

Weather conditions. Number of days with
thunderstorm 13 mixed precip 0
heavy rain 12 rain 16
light rain 34 freezing rain 0
lt freezing rain 3 hail 0
heavy snow 1 snow 3
light snow 9 sleet 1
fog 44 fog W/vis <= 1/4 mile 6
haze 14

- indicates negative numbers.
R indicates record was set or tied.
Mm indicates data is missing.
T indicates trace amount.