MD88 flight crew diverts due to unforecast WX.

Attributes
ACN	718952
Time
Date	200611
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : roc.airport
State Reference	NY
Environment
Weather Elements	Fog
Light	Night
Aircraft 1
Controlling Facilities	tracon : roc.tracon tower : myf.tower
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer only : 22
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 12000 flight time type : 1000
ASRS Report	718952
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : atp
Experience	flight time last 90 days : 170 flight time total : 7100 flight time type : 1600
ASRS Report	718780
Events
Anomaly	non adherence : far non adherence : published procedure
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Weather Aircraft Company Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

Dispatched to buf; forecast clear; no alternate with minimum reserve fuel. On descent to buf; fog closed the airport. Spoke to dispatcher; diverted to roc (also forecast clear). On approach at roc runway 22; RVR dropped to 1000 ft. Continued approach to uneventful landing. Recommend increasing min reserve fuel for seasonal lake effect fog airports.

Original NASA ASRS Text

Title: MD88 FLT CREW DIVERTS DUE TO UNFORECAST WX.

Narrative: DISPATCHED TO BUF; FORECAST CLR; NO ALTERNATE WITH MINIMUM RESERVE FUEL. ON DSCNT TO BUF; FOG CLOSED THE ARPT. SPOKE TO DISPATCHER; DIVERTED TO ROC (ALSO FORECAST CLR). ON APCH AT ROC RWY 22; RVR DROPPED TO 1000 FT. CONTINUED APCH TO UNEVENTFUL LNDG. RECOMMEND INCREASING MIN RESERVE FUEL FOR SEASONAL LAKE EFFECT FOG ARPTS.

Data retrieved from NASA's ASRS site as of January 2009 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.