Narrative:

I landed at hwd in VFR conditions 10 mins before I took off for oak. Hwd ATC said conditions were 20000' broken, 10 mi visibility. Hwd tower cleared me to depart with a left 270 degrees from hwd. I took off and turned left to find a cloud bank directly in front of my flight path. I was amazed! In a matter of my takeoff roll this cloud bank must have formed. Hwd tower's controller seemed surprised as well. He told me I could extend west before turning, but because of the location of hwd to the sfo TCA and oak arsa, there is only so far you can go. I leveled a 500' and asked the tower for SVFR. Tower advised they were VFR and could not give me SVFR. My choices were limited. I was able to remain VFR and remain clear of clouds as required by the FARS, but it was very close. I realize WX changed fast, but I was caught off guard. Tower (hwd) could have been more helpful. When he realized what had happened, the extension was nice but a right turnout would have prevented any concern other then delaying the departure of 28R traffic. Tonight I'll file IFR.

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Original NASA ASRS Text

Title: POTENTIAL PENETRATION OF AIRSPACE AS SMA DEP VFR AND HAS A PROBLEM MAINTAINING REQUIRED DISTANCE FROM CLOUDS AND TCA ON DEP HEADING THAT WAS GIVEN BY TWR.

Narrative: I LANDED AT HWD IN VFR CONDITIONS 10 MINS BEFORE I TOOK OFF FOR OAK. HWD ATC SAID CONDITIONS WERE 20000' BROKEN, 10 MI VISIBILITY. HWD TWR CLRED ME TO DEPART WITH A LEFT 270 DEGS FROM HWD. I TOOK OFF AND TURNED LEFT TO FIND A CLOUD BANK DIRECTLY IN FRONT OF MY FLT PATH. I WAS AMAZED! IN A MATTER OF MY TKOF ROLL THIS CLOUD BANK MUST HAVE FORMED. HWD TWR'S CTLR SEEMED SURPRISED AS WELL. HE TOLD ME I COULD EXTEND W BEFORE TURNING, BUT BECAUSE OF THE LOCATION OF HWD TO THE SFO TCA AND OAK ARSA, THERE IS ONLY SO FAR YOU CAN GO. I LEVELED A 500' AND ASKED THE TWR FOR SVFR. TWR ADVISED THEY WERE VFR AND COULD NOT GIVE ME SVFR. MY CHOICES WERE LIMITED. I WAS ABLE TO REMAIN VFR AND REMAIN CLR OF CLOUDS AS REQUIRED BY THE FARS, BUT IT WAS VERY CLOSE. I REALIZE WX CHANGED FAST, BUT I WAS CAUGHT OFF GUARD. TWR (HWD) COULD HAVE BEEN MORE HELPFUL. WHEN HE REALIZED WHAT HAD HAPPENED, THE EXTENSION WAS NICE BUT A RIGHT TURNOUT WOULD HAVE PREVENTED ANY CONCERN OTHER THEN DELAYING THE DEP OF 28R TFC. TONIGHT I'LL FILE IFR.

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.