Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXAK57 PAJK 050529 CLMYAK NATIONAL WEATHER SERVICE JUNEAU AK 928 PM AKDT TUE JUL 04 2023 ................................... ...THE YAKUTAT CLIMATE SUMMARY FOR THE MONTH OF JUNE 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1917 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 87 06/27/2019 06/10/1995 LOW 29 06/04/1971 HIGHEST 71 06/19 70 1 LOWEST 34 06/01 35 -1 AVG. MAXIMUM 57.2 58.8 -1.6 AVG. MINIMUM 45.3 45.0 0.3 MEAN 51.3 51.9 -0.7 DAYS MAX >= 90 0 0.0 0.0 DAYS MAX <= 32 0 0.0 0.0 DAYS MIN <= 32 0 0.2 -0.2 DAYS MIN <= 0 0 0.0 0.0 PRECIPITATION (INCHES) RECORD MAXIMUM 18.34 1987 MINIMUM 0.67 1936 TOTALS 8.07 5.41 2.66 DAILY AVG. 0.27 0.18 0.09 DAYS >= .01 21 16.5 4.5 DAYS >= .10 12 10.2 1.8 DAYS >= .50 8 3.4 4.6 DAYS >= 1.00 2 0.9 1.1 GREATEST 24 HR. TOTAL 1.93 06/15 TO 06/16 DEGREE DAYS HEATING TOTAL 405 393 12 SINCE 7/1 8275 8708 -433 COOLING TOTAL 0 0 0 SINCE 1/1 0 0 0 FREEZE DATES EARLIEST 09/28 09/28 LATEST 05/07 05/22 .............................................................. WIND (MPH) AVERAGE WIND SPEED 5.6 HIGHEST WIND SPEED/DIRECTION 22/110 DATE 06/16 HIGHEST GUST SPEED/DIRECTION 36/100 DATE 06/16 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 2 RAIN 10 LIGHT RAIN 20 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 25 FOG W/VIS <= 1/4 MILE 3 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$ ...ABOVE NORMAL RAINFALL FOR ALL AND ABOVE NORMAL TEMPERATURES FOR MOST CLIMATE SITES FOR JUNE... We`ll start off with the single exception, Yakutat`s temperature was 0.7 degrees below normal for the month. This was due to them having the most rainy days from frontal systems and having a significant amount of days of low marine layer stratus and fog, which was due to a dirty ridge parked in place over the eastern Gulf in between the frontal systems. Sitka was impacted by the marine layer, as well, but for much less time, and their monthly average temperature was 1.2 degrees above normal. Ketchikan`s monthly average temperature was 1.1 degree above normal. Juneau`s monthly average temperature was 0.2 degrees above normal. The above normal values can be attributed to appreciable warm air advection out ahead of several frontal systems that moved over the area and a few extended periods of sunny to partly cloudy skies that provided good radiative surface heating. For the majority of the last third of the month, a few weakening frontal systems primarily tracked over a ridge of high pressure that was parked over the eastern Gulf and Panhandle. This primarily brought appreciable rainfall amounts to parts of the northern Panhandle, while leaving the southern Panhandle mainly dry. For periods behind the frontal systems, onshore flow and cooler air aloft caused convective shower activity with some additional topographic enhancement for the northern Panhandle, some of which contained moderate to heavy rainfall, which made the spatial distribution of rainfall totals highly variable for those time frames. Earlier in the month, the frontal systems that moved through the region came from a more westerly or southwesterly direction, impacting the Panhandle much more evenly and giving the southern Panhandle a higher proportion of the total rain received in southeast Alaska. Yakutat`s total monthly liquid precipitation was 2.66 inches above normal. Sitka`s total rainfall was 1.9 inches above normal. Juneau`s was 0.66 inches above normal, and Ketchikan`s was 0.39 inches above normal. Heavier showers, which totaled 1.26 inches on the 28th helped that site finally be above normal. Chambers $$