493  
CXUS53 KOAX 190444  
CLMOFK  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE OMAHA NEBRASKA  
1032 AM CDT TUE MAY 1 2018  
   
...............................
 
 
   
..THE NORFOLK CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1888 TO 2018  
 
WEATHER OBSERVED NORMAL DEPART  
VALUE DATE(S) VALUE FROM  
NORMAL    
............................................
 
 
TEMPERATURE (F)  
HIGHEST 85 04/30  
LOWEST 6 04/04  
AVG. MAXIMUM 53.4 61.9 -8.5  
AVG. MINIMUM 29.1 37.3 -8.2  
MEAN 41.2 49.6 -8.4  
DAYS MAX >= 90 0  
DAYS MAX <= 32 3  
DAYS MIN <= 32 19  
DAYS MIN <= 0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 7.47 1984  
MINIMUM 0.11 1928  
TOTALS 1.32 2.65 -1.33  
DAILY AVG. 0.04  
DAYS >= .01 8  
DAYS >= .10 5  
DAYS >= .50 0  
DAYS >= 1.00 0  
GREATEST  
24 HR. TOTAL 0.47 04/13 TO 04/14  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 13.2 1984  
TOTALS 10.9 2.6  
SINCE 7/1 45.2  
 
DAYS >= 1.0 3 GREATEST SNOW DEPTH 5 04/15  
 
04/14  
24 HR TOTAL 5.2 04/14 TO 04/14  
 
DEGREE DAYS  
HEATING TOTAL 715 474 241  
SINCE 7/1 6770 6423 347  
COOLING TOTAL 9 12 -3  
SINCE 1/1 9 12 -3    
.............................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 12.4  
HIGHEST WIND SPEED/DIRECTION 39/180 DATE 04/30  
HIGHEST GUST SPEED/DIRECTION 54/010 DATE 04/14  
 
SKY COVER  
AVERAGE SKY COVER 0.40  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 2 MIXED PRECIP 1  
HEAVY RAIN 1 RAIN 3  
LIGHT RAIN 8 FREEZING RAIN 2  
LT FREEZING RAIN 1 HAIL 0  
HEAVY SNOW 1 SNOW 2  
LIGHT SNOW 9 SLEET 0  
FOG 13 FOG W/VIS <= 1/4 MILE 1  
HAZE 3  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
>= INDICATES GREATER THAN OR EQUAL TO.  
<= INDICATES LESS THAN OR EQUAL TO.  
 

 
 
   
..APRIL SUMMARY FOR NORFOLK
 
 
APRIL WAS COLDER AND DRIER THAN NORMAL. IN FACT, APRIL 2018 WAS THE  
2ND COLDEST ON RECORD. AS YOU MIGHT EXPECT, SEVERAL NEW TEMPERATURE  
RECORDS WERE ESTABLISHED DURING THE MONTH, SOME GOING BACK OVER 80  
YEARS. ONE NEW SNOWFALL RECORD WAS ALSO SET.  
 
THE AVERAGE TEMPERATURE FOR THE MONTH WAS 41.3 DEGREES OR 8.3 DEGREES  
BELOW NORMAL. THE LAST TIME IT WAS THIS COLD WAS ALMOST 100 YEARS AGO  
IN 1920 WHEN THE AVERAGE TEMPERATURE FOR THE MONTH WAS 40.5 DEGREES,  
THE COLDEST APRIL ON RECORD. HERE IS A LIST OF NEW RECORDS FOR APRIL.  
 
APRIL 7 RECORD LOW OF 11. OLD RECORD 12 SET IN 1936.  
APRIL 14 RECORD LOW MAXIMUM OF 34. OLD RECORD 37 SET IN 1996.  
APRIL 15 RECORD LOW MAXIMUM OF 28. OLD RECORD 34 SET IN 2000.  
APRIL 19 RECORD DAILY SNOWFALL OF 3.9 INCHES. OLD RECORD 1.8  
INCHES SET IN 2013.  
 
APRIL WAS ALSO DRIER THAN NORMAL WITH 1.32 INCHES OF PRECIPITATION  
RECORDED. THIS WAS 1.33 INCHES BELOW NORMAL.  
 
MOST OF THE MONTH WAS CONSISTENTLY COLD WITH ONLY A COUPLE OF SHORT  
2 DAY PERIODS FROM THE 11TH 12TH AND THE 29TH 30TH THAT AVERAGED  
ABOVE NORMAL, THE REST OF THE DAYS WERE AT OR BELOW NORMAL. SNOW WAS  
RECORDED ON 9 DAYS WITH A MONTHLY SNOWFALL TOTAL OF 10.9 INCHES,  
THIRD SNOWIEST ON RECORD. THE GREATEST 24HR SNOWFALL WAS 5.2 INCHES  
ON THE 14TH AND GREATEST SNOW DEPTH WAS 5 INCHES ON THE 14TH AND 15TH.  
 
THE HIGHEST WINDS OF THE MONTH OCCURRED ON THE 14TH WITH GUSTS  
REACHING 54 MPH FROM THE NORTH.  
 
THE COMBINATION OF STRONG NORTH WINDS WITH SNOW AND BLOWING SNOW ON  
THE 14TH PRODUCED A SIGNIFICANT WINTER STORM IN THE AREA WITH NEAR  
BLIZZARD CONDITIONS AS VISIBILITY DROPPED TO A QUARTER MILE OR LESS  
AT TIMES.  
 

 
 
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