In this case, the delays are not weather-related but tied to the reduction of the airport's capacity to handle aircraft because of the runway closure.
The FAA's advisory...
ATCSCC ADVZY 012 EWR
/ZNY 09/08/2003 CDM PROPOSED GROUND DELAY PROGRAM MESSAGE:
ARRIVALS ESTIMATED FOR
: 081730Z - 090259Z
ANTICIPATED PROGRAM AAR
FLIGHTS INCLUDED: ALL
CONTIGUOUS US DEPARTURES
CANADIAN AIRPORTS INCLUDED: CYHZ CYOW CYUL CYYZ
DELAY ASSIGNMENT TABLE APPLIES TO
ANTICIPATED AVERAGE DELAY: 78
ANTICIPATED MAXIMUM DELAY: 140
REASON: RUNWAY, RY4L/22R CLOSED FOR
REMARKS: USERS RESPOND BY
UPDATES MUST BE
The *average* delay is 78 minues (1:18) and the maximum could be 140 minutes (2:10).
Expect to see this delay program routinuely until the runway reopens. If the weather gets bad, i.e. lower ceilings and/or visibilities that preclude circle-to-land approaches, expect the delay figures to increase...
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.