B737 has GPWS activate on vectors to approach.

Attributes
ACN	323557
Time
Date	199512
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : oak
State Reference	CA
Altitude	msl bound lower : 2700 msl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : oak
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 220 flight time total : 3200 flight time type : 1200
ASRS Report	323557
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Approach assigned heading of 150 degrees to intercept localizer to runway 11 at oak. We were in IMC experiencing intermittent moderate turbulence due to the severe winter storm that had entered the bay area earlier in the evening. We were given clearance to descend from 3000 ft to 2500 ft MSL and to maintain 2500 ft until established on the localizer. At 2700 ft we received GPWS warning for terrain and initiated go around thrust and an immediate climb. We notified approach, intercepted the localizer and were reclred for the approach. Approach mentioned on the telephone that they had numerous GPWS warnings reported by other aircraft due probably to the abnormal WX and high winds. We vacated assigned altitude to comply with GPWS with no conflicts with other aircraft.

Original NASA ASRS Text

Title: B737 HAS GPWS ACTIVATE ON VECTORS TO APCH.

Narrative: APCH ASSIGNED HDG OF 150 DEGS TO INTERCEPT LOC TO RWY 11 AT OAK. WE WERE IN IMC EXPERIENCING INTERMITTENT MODERATE TURB DUE TO THE SEVERE WINTER STORM THAT HAD ENTERED THE BAY AREA EARLIER IN THE EVENING. WE WERE GIVEN CLRNC TO DSND FROM 3000 FT TO 2500 FT MSL AND TO MAINTAIN 2500 FT UNTIL ESTABLISHED ON THE LOC. AT 2700 FT WE RECEIVED GPWS WARNING FOR TERRAIN AND INITIATED GAR THRUST AND AN IMMEDIATE CLB. WE NOTIFIED APCH, INTERCEPTED THE LOC AND WERE RECLRED FOR THE APCH. APCH MENTIONED ON THE TELEPHONE THAT THEY HAD NUMEROUS GPWS WARNINGS RPTED BY OTHER ACFT DUE PROBABLY TO THE ABNORMAL WX AND HIGH WINDS. WE VACATED ASSIGNED ALT TO COMPLY WITH GPWS WITH NO CONFLICTS WITH OTHER ACFT.

Data retrieved from NASA's ASRS site as of July 2007 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.