Narrative:

The three windows that face north in the tower cab are encased in ice. They are completely opaque. There is no view of the northwest quadrant of the airport; which includes the departure end of runway 01L. This condition started early this morning xa:00 and continues through the present xs:15. There are aircraft operations being conducted with multiple snow removal teams in the immediate vicinity and that part of the runway/taxiway/airport and is not viewable from the tower.I recommend taking steps to remove the ice from the tower's windows as soon as possible.

Google
 

Original NASA ASRS Text

Title: Tower Controller reported of windows incased in ice. Controller reported that the windows in a certain area of the Tower were opaque. Reporter stated that part of the airport was not viewable from the Tower cab due to the ice.

Narrative: The three windows that face north in the tower cab are encased in ice. They are completely opaque. There is no view of the NW quadrant of the airport; which includes the departure end of Runway 01L. This condition started early this morning XA:00 and continues through the present XS:15. There are aircraft operations being conducted with multiple snow removal teams in the immediate vicinity and that part of the runway/taxiway/airport and is not viewable from the tower.I recommend taking steps to remove the ice from the tower's windows as soon as possible.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.