Small aircraft X landed on occupied runway due to turbulence thunderstorm in air traffic area.

Attributes
ACN	203746
Time
Date	199203
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sjc
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sjc
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	landing other
Route In Use	approach : visual
Flight Plan	VFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	landing other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 40 flight time total : 850 flight time type : 800
ASRS Report	203746
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : ground critical inflight encounter : weather
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Miss Distance	horizontal : 3000 vertical : 0
Supplementary
Primary Problem	Weather

Narrative:

Hidden thunderstorm, hidden behind mountain, 5000 overcast made tops unseen also. In air traffic area it was getting really turbulent. Small aircraft X was cleared to land. Aircraft Y in front of me was still on runway when I landed. I did not declare emergency, but would have had I been given go around instructions. Thunderstorm was violent, visibility was rapidly deteriorating and there was no 'out' for alternate field at that time. Instead of trying to beat thunderstorm to airport, I should have 180'ed before air traffic area searched for clear airport. Poor judgement on my part even though thunderstorm surprised me, I had 'get homeitis'. Most terrifying 5 mins of flying ever.

Original NASA ASRS Text

Title: SMA X LANDED ON OCCUPIED RWY DUE TO TURB TSTM IN ATA.

Narrative: HIDDEN TSTM, HIDDEN BEHIND MOUNTAIN, 5000 OVCST MADE TOPS UNSEEN ALSO. IN ATA IT WAS GETTING REALLY TURBULENT. SMA X WAS CLRED TO LAND. ACFT Y IN FRONT OF ME WAS STILL ON RWY WHEN I LANDED. I DID NOT DECLARE EMER, BUT WOULD HAVE HAD I BEEN GIVEN GAR INSTRUCTIONS. TSTM WAS VIOLENT, VISIBILITY WAS RAPIDLY DETERIORATING AND THERE WAS NO 'OUT' FOR ALTERNATE FIELD AT THAT TIME. INSTEAD OF TRYING TO BEAT TSTM TO ARPT, I SHOULD HAVE 180'ED BEFORE ATA SEARCHED FOR CLR ARPT. POOR JUDGEMENT ON MY PART EVEN THOUGH TSTM SURPRISED ME, I HAD 'GET HOMEITIS'. MOST TERRIFYING 5 MINS OF FLYING EVER.

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.