Monthly Climate Summary - Juneau
CXAK57 PAJK 011537
CLMAJK
CLIMATE REPORT
NATIONAL WEATHER SERVICE JUNEAU, AK
735 AM AKDT WED MAY 1 2013
...................................
...THE JUNEAU CLIMATE SUMMARY FOR THE MONTH OF APRIL 2013...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1943 TO 2013
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 74 04/26/2003
LOW 6 04/05/1963
HIGHEST 51 04/07 60 -9 62 04/12
LOWEST 22 04/20 24 -2 20 04/01
AVG. MAXIMUM 42.9 48.4 -5.5 51.1
AVG. MINIMUM 29.3 33.3 -4.0 32.4
MEAN 36.1 40.8 -4.7 41.8
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 22 11.1 10.9 15
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.48 1999
MINIMUM 0.27 1948
TOTALS 6.37 2.94 3.43 1.68
DAILY AVG. 0.21 0.10 0.11 0.06
DAYS >= .01 18 17.0 1.0 11
DAYS >= .10 14 8.6 5.4 6
DAYS >= .50 4 1.2 2.8 1
DAYS >= 1.00 1 0.2 0.8 0
GREATEST
24 HR. TOTAL 1.75 04/25 TO 04/26
SNOWFALL (INCHES)
RECORDS
TOTAL 46.3 1963
24 HR TOTAL 20.5 04/01/1963 TO 04/02/1963
SNOW DEPTH 33 04/04/1963
TOTALS 12.1 1.1 11.0 0.0
SINCE 7/1 83.8 86.7 -2.9 134.3
SNOWDEPTH AVG. 0 0 0 0
DAYS >= TRACE 14 1.3 12.7 0
DAYS >= 1.0 5 0.3 4.7 0
GREATEST
SNOW DEPTH 4 04/27 0
24 HR TOTAL 4.4 04/26
DEGREE_DAYS
HEATING TOTAL 860 724 136 690
SINCE 7/1 8017 7528 489 7565
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 0
FREEZE DATES
RECORD
EARLIEST 08/24/1969
LATEST 06/13/1965
EARLIEST 09/30
LATEST 05/12
.................................................
WIND (MPH)
AVERAGE WIND SPEED 7.5
RESULTANT WIND SPEED/DIRECTION 5/109
HIGHEST WIND SPEED/DIRECTION 37/110 DATE 04/09
HIGHEST GUST SPEED/DIRECTION 47/130 DATE 04/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.70
NUMBER OF DAYS FAIR 6
NUMBER OF DAYS PC 6
NUMBER OF DAYS CLOUDY 18
AVERAGE RH (PERCENT) 76
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 1
HEAVY RAIN 0 RAIN 6
LIGHT RAIN 17 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 5
HEAVY SNOW 0 SNOW 8
LIGHT SNOW 10 SLEET 3
FOG 22 FOG W/VIS <= 1/4 MILE 2
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...IT WAS A WET AND COOL APRIL...
THE MEAN TEMPERATURE FOR THE MONTH WAS 36 DEGREES WHICH IS ALMOST 5 DEGREES
BELOW THE NORMAL MEAN TEMPERATURE OF 41 DEGREES. THE WARMEST TEMPERATURE WAS
FELT ON THE 7TH WHEN THE MERCURY SOARED TO 51 DEGREES. ON THE FLIP SIDE THE
COLDEST TEMPERATURE FOR THE MONTH AT 22 DEGREES OCCURRED ON THE
20TH...ALTHOUGH IT WAS ON THE 15TH WHEN THE THERMOMETER DIPPED TO 24 DEGREES
BREAKING THE RECORD LOW FOR THE DAY PREVIOUSLY SET IN 2005.
PRECIPITATION OCCURRED ON 21 DAYS OF THE MONTH WITH OVER HALF OF THE
PRECIPITATION FALLING DURING A FOUR DAY PERIOD BETWEEN THE 25TH AND 28TH. BY
MONTHS END 6.37 INCHES HAD FALLEN MAKING IT THE SECOND WETTEST APRIL ON RECORD
AND 3.43 INCHES ABOVE NORMAL. THE WETTEST DAY WAS ON THE 26TH WHEN 1.36 INCHES
WAS COLLECTED WHICH BROKE THE PREVIOUS RECORD OF .77 INCHES IN 1972.
SNOW FELL 14 DAYS DURING APRIL WITH HALF OF THOSE DAYS HAVING MEASURABLE
AMOUNTS. BY THE MONTHS END 12.1 INCHES HAD BEEN MEASURED...PLACING IT AS THE
6TH SNOWIEST APRIL ON RECORD. THE 26TH WAS NOT ONLY THE WETTEST DAY BUT ALSO
HAD THE HEAVIEST SNOW FALL AMOUNT WITH 4.4 INCHES BEING MEASURED...THIS BROKE
THE PREVIOUS RECORD OF 0.2 INCHES SET BACK IN 1964. THERE WERE TWO OTHER DAYS
THAT HAD RECORD SNOWFALL AMOUNTS...THE 6TH HAD 2.3 INCHES FALL BREAKING THE
RECORD OF 0.8 INCHES AND ON THE 28TH WITH 1.7 INCHES FALLING BREAKING THAT
DAYS RECORD OF 0.9 INCHES. BOTH RECORDS PREVIOUSLY SET IN 1972.
WINDS PREVAILED OUT OF THE SOUTHEAST DURING THE MONTH. THE STRONGEST WIND
OCCURRED ON THE 9TH WITH A SOUTHEAST PEAK WIND TO 47 MPH. THERE WHERE 8 DAYS
WITH WINDS THAT EXCEEDED 30 MPH.
$$
KV