Narrative:

Landed on runway 28. Taxi instructions 'cross runway 23L and runway 23R, taxi to the ramp.' I turned left on taxiway south. Snow and blowing snow made it almost impossible to distinguish the taxiway from grass infield. I followed the taxiway lights to what appeared to be taxiway J. Turning right, I taxied off of the pavement. I secured the engines and advised controllers of the situation. No damage to the aircraft. The blowing snow made it impossible to distinguish paved from unpaved surfaces. There was a taxiway light on the right side of taxiway south missing. That gave the appearance of a crossing taxiway where there was none.

Google
 

Original NASA ASRS Text

Title: AN ATX FGT SMT TAXIED INTO THE WEEDS.

Narrative: LANDED ON RWY 28. TAXI INSTRUCTIONS 'CROSS RWY 23L AND RWY 23R, TAXI TO THE RAMP.' I TURNED L ON TXWY S. SNOW AND BLOWING SNOW MADE IT ALMOST IMPOSSIBLE TO DISTINGUISH THE TXWY FROM GRASS INFIELD. I FOLLOWED THE TXWY LIGHTS TO WHAT APPEARED TO BE TXWY J. TURNING R, I TAXIED OFF OF THE PAVEMENT. I SECURED THE ENGS AND ADVISED CTLRS OF THE SIT. NO DAMAGE TO THE ACFT. THE BLOWING SNOW MADE IT IMPOSSIBLE TO DISTINGUISH PAVED FROM UNPAVED SURFACES. THERE WAS A TXWY LIGHT ON THE R SIDE OF TXWY S MISSING. THAT GAVE THE APPEARANCE OF A XING TXWY WHERE THERE WAS NONE.

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.