April, 1997 Preliminary Local Climatological Data Duluth, MN National Weather Service |-Temperature-|--------Degree Days---------|-Precipitation-|-Snowfall-|----Wind----| (degrees F) (base 65 degrees F) (inches) (inches) (mph, deg) Heating Cooling Max Min Avg Dep HDD Seas Dep CDD Seas Dep Tot Tot Norm Tot Tot Avg Pk Dir from for for for for for Spd Gust at Norm Seas Seas Mon Mon Seas Pk Date | | | | | | | | | | | | | | | | | | 1 55 31 43 11 22 8608 164 0 0 0 0 0 0.07 0.0INCHES 10.8 M M 2 48 35 42 10 23 8631 154 0 0 0 T 0 0.14 0.0INCHES 9.6 M M 3 50 29 40 7 25 8656 147 0 0 0 0 T 0.21 0.0INCHES 11.5 M M 4 49 36 43 10 22 8678 137 M M M 0.08 0.08 0.28 0.0INCHES 9.3 M M 5 42 36 39 5 26 8704 132 M M M 0.75 0.83 0.35 0.0INCHES 14.9 M M 6 44 8 26 -8 39 8743 140 M M M 0.09 0.92 0.42 0.9INCHES 20.8 M M 7 16 4 10 -25 55 8798 165 M M M T 0.92 0.49 0.1INCHES 21.3 M M 8 26 5 16 -19 48 8846 183 0 0 0 0.01 0.93 0.56 0.2INCHES 10.4 M M 9 32 8 20 -16 45 8891 199 0 0 0 0 0.93 0.63 0.0INCHES 5.8 M M 10 34 15 25 -11 40 8932 211 0 0 0 0 0.93 0.70 0.0INCHES 6.9 M M 11 38 15 27 -10 38 8970 221 M M M 0 0.93 0.77 0.0 127.3 4.1 M M 12 40 20 30 -7 35 9005 228 M M M 0 0.93 0.84 0.0 127.3 5.6 M M 13 47 24 36 -2 29 9034 230 M M M 0 0.93 0.91 0.0 127.3 6.6 M M 14 51 27 39 1 26 9060 229 M M M 0 0.93 0.98 0.0 127.3 11.7 M M 15 42 25 34 -4 31 9092 234 0 0 0 0 0.93 1.05 0.0 T 16.5 M M 16 35 21 28 -11 37 9128 244 0 0 0 T 0.93 1.13 0.1INCHES 10.3 M M 17 46 22 34 -5 31 9159 249 0 0 0 0 0.93 1.21 0.0INCHES 6.3 M M 18 48 30 39 -1 26 9185 250 0 0 0 0.01 0.94 1.29 0.0 127.4 10.4 M M 19 43 31 37 -3 28 9213 253 0 0 0 0 0.94 1.37 0.0 127.4 7.6 M M 20 50 28 39 -2 26 9239 255 0 0 0 0 0.94 1.45 0.0 127.4 8.0 M M 21 50 27 39 -2 26 9265 257 0 0 0 0 0.94 1.53 0.0 127.4 10.6 M M 22 50 26 38 -4 27 9292 261 M M M 0 0.94 1.61 0.0 T 8.8 M M 23 50 30 40 -2 25 9317 263 M M M T 0.94 1.69 0.0 T 6.9 M M 24 57 31 44 2 21 9338 259 M M M 0 0.94 1.77 0.0 127.4 6.2 M M 25 62 30 46 3 19 9357 258 0 0 0 0 0.94 1.85 0.0 127.4 3.9 M M 26 62 33 48 5 17 9374 253 0 0 0 T 0.94 1.93 0.0 127.4 7.7 M M 27 51 36 44 0 21 9395 253 0 0 0 0.37 1.31 2.01 0.0 127.4 6.5 M M 28 56 31 44 0 21 9416 253 0 0 0 0.01 1.32 2.09 0.0 127.4 8.9 M M 29 65 34 50 5 15 9431 248 M M M T 1.32 2.17 0.0 127.4 18.2 M M 30 39 27 33 -12 32 9463 260 M M M 0.03 1.35 2.25 0.4 127.8 7.9 M M CLIMATOLOGICAL SUMMARY FOR APRIL 1997 ...TEMPERATURE DATA... ...PRECIPITATION DATA... AVERAGE MONTHLY........ 35.6 TOTAL FOR MONTH......... 1.35 DEPARTURE FROM NORMAL.. -3.0 DEPARTURE FROM NORMAL...-0.90 HIGHEST................ 65 ON 29TH GREATEST IN 24 HOURS.... 0.75 LOWEST................. 4 ON 7TH OCCURRED ON 5TH ...NUMBER OF DAYS WITH... SNOWFALL, ICE PELLETS, AND HAIL MAXIMUM 32 DEGREES OR BELOW...3 TOTAL FOR MONTH....... 1.7 INCHES MAXIMUM 90 DEGREES OR ABOVE...0 GREATEST IN 24 HOURS.. 0.9 ON 6TH MINIMUM 32 DEGREES OR BELOW...24 GREATEST SNOW DEPTH... 23IN. ON 1ST MINIMUM 0 DEGREES OR BELOW....0 ...HEATING DEGREE DAYS (BASE 65)... ...WEATHER NO. OF DAYS WITH... TOTAL FOR THE MONTH.... 877 0.01 INCH OR MORE PRECIP... 8 DEPARTURE FROM NORMAL.. +85 0.10 INCH OR MORE PRECIP... 2 TOTAL FOR THE SEASON... 9463 0.50 INCH OR MORE PRECIP... 1 DEPARTURE FROM NORMAL.. +260 1.00 INCH OR MORE PRECIP... 0 ...COOLING DEGREE DAYS (BASE 65)... ...PRESSURE DATA... TOTAL FOR THE MONTH.... 0 HIGHEST SEA-LEVEL 30.58 ON 9TH DEPARTURE FROM NORMAL.. 0 LOWEST SEA-LEVEL 28.96 ON 6TH TOTAL FOR THE SEASON... 0 DEPARTURE FROM NORMAL.. 0 ...SUNSHINE DATA...... 65 PERCENT OF POSSIBLE FOR APR 97 NORMAL MEAN SUNSHINE IS 58 PERCENT ...REMARKS... APRIL OF 1997 WAS A COOLER AND MUCH DRIER THAN NORMAL MONTH. MEASURABLE PRECIPITATION OCCURED ON ONLY 8 DAYS WITH MOST FALLING AT THE BEGINING AND END OF THE MONTH. A NEW LOW MAXIMUM TEMPERATURE RECORD WAS SET ON THE 7TH WITH A HIGH OF ONLY 16 DEGREES. THIS BREAKS THE PREVIOUS LOW MAXIMUM OF 22 DEGREES SET IN 1936. TWO LOW TEMPERATURE RECORDS WERE TIED DURING THE MONTH WITH 5 ABOVE ON THE 8TH MATCHING THE 5 ABOVE READING IN 1974 AND 8 ABOVE ON THE 9TH EQUALING THE 8 ABOVE READING SET IN 1979. SES