Interesting special weather statement from the NWS in Fairbanks AK tonight…
It affects aviation, because most altimeters used for measuring altitude do not have settings above 31 inches of mercury.
WWAK83 PAFG 100619
SPSAFG
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FAIRBANKS AK
919 PM AKST SUN JAN 9 2011
…VERY STRONG HIGH PRESSURE OVER NORTHERN ALASKA IN THE COMING WEEK…
STRONG HIGH PRESSURE NOW OVER THE SOUTHEAST INTERIOR OF ALASKA
WILL BUILD THROUGH TUESDAY OVER THE INTERIOR AND NORTH SLOPE OF
ALASKA. BY MONDAY NIGHT ALTIMETER SETTINGS ARE EXPECTED TO
EXCEED 31 INCHES OF MERCURY ACROSS MUCH OF THE NORTHERN AND
EASTERN INTERIOR AND NORTH SLOPE OF ALASKA…AND THEY ARE
FORECAST TO REMAIN THAT HIGH INTO THURSDAY. THIS IS OF HIGH IMPACT
TO AVIATION AS MANY AIRPLANE ALTIMETERS DO NOT READ ABOVE 31
INCHES OF MERCURY.
THIS STRONG HIGH PRESSURE WILL ALSO CAUSE VERY STRONG TEMPERATURE
INVERSIONS ACROSS THE INTERIOR OF ALASKA IN THE COMING WEEK. MANY
HILL TOPS IN THE INTERIOR WILL BE MORE THAN 30 DEGREES WARMER THAN
VALLEYS IN THE COMING WEEK.
