NOAK49 PAFG 050130
PNSAFG
AKZ838>844-051330-

Public Information Statement
National Weather Service Fairbanks AK
530 PM AKDT Sat May 4 2024

...2024 SPRING GREEN UP ON CHENA RIDGE...

GREEN UP ON CHENA RIDGE AS VIEWED FROM THE NATIONAL WEATHER
SERVICE FORECAST OFFICE ON THE UNIVERSITY OF ALASKA FAIRBANKS
CAMPUS HAS OFFICIALLY BEEN DECLARED TODAY...MAY 4 2024. LAST YEAR
GREEN UP OCCURRED ON THE 16TH OF MAY. THE MEAN DATE FOR GREEN UP 
ON THE CHENA RIDGE IS THE 9TH OF MAY. 

THE EARLIEST GREEN UP ON RECORD FOR THE CHENA RIDGE WAS ON APRIL
26TH 2016 WHILE THE LATEST GREEN UP ON RECORD WAS MAY 26TH 2013.

GREEN UP IN INTERIOR ALASKA IS THE SPROUTING OF TREE
LEAVES...BIRCH AND ASPEN...IN THE SPRING. IN MANY YEARS...IT IS
OFTEN QUITE ABRUPT...WITH ENTIRE HILLSIDES LEAFING OUT IN JUST A
DAY OR TWO. GREEN UP OCCURS EARLIEST ON THE LOWER SLOPES OF SOUTH
FACING HILLSIDES...SPREADING RAPIDLY DOWN TO THE VALLEY FLOOR AND
MORE SLOWLY UPSLOPE. 

$$

THORNE