Narrative:

WX starts to deteriorate out to the west. I decided to leave station early. In departing the area, I heard a PIREP from another banner plane who was on the same route that we normally take back to ZZZ. He had to head sbound due to WX. At this point, I decided to head south along the shore line to get back to ZZZ. I was east of ZZZ at 1000 ft when I called tower to enter the airspace using the coastal arrival. They advised me that the field was going IFR. Tower told me not to enter, so I proceeded to head back to the shore line to hold station. I asked tower to check the WX for me. Tower reported that as far as they could tell out to 40 NM was heavy precipitation. To the south and north ZZZ1 and ZZZ2 were both still visible. I made contact with ZZZ2 to enter their airspace. I proceeded to head into ZZZ2. At about 2 mi out, the airport went IFR. Looking to the south, ZZZ1 was not visible. I headed to my second alternate airport (ZZZ3) northbound along the shore line and contacted the tower to enter airspace. They informed me the field was about to go IFR and be prepared to head south bound. At this point, I lost sight with the ZZZ3 area, so I proceeded sbound to ZZZ4. In doing so, it was evident that the WX was one huge line with no break in it. Visibility was deteriorating rapidly as the line of WX was passing over me. I lost visual reference to the horizon in all directions. All I could see was the beach below me. At this time I was being pushed down by the WX with nowhere to go but down on the beach. I made 1 sbound pass to make sure the area was clear. On the second pass, I dropped the banner and landed on the beach. I secured the plane and removed the banner from the water. After that, I decided to move the plane farther away from the water line, so I taxied the plane about 20 ft further onto the beach.

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Original NASA ASRS Text

Title: PA25 PLT MAKES AN OFF-FIELD LNDG DUE TO WX E OF ZZZ1.

Narrative: WX STARTS TO DETERIORATE OUT TO THE W. I DECIDED TO LEAVE STATION EARLY. IN DEPARTING THE AREA, I HEARD A PIREP FROM ANOTHER BANNER PLANE WHO WAS ON THE SAME RTE THAT WE NORMALLY TAKE BACK TO ZZZ. HE HAD TO HEAD SBOUND DUE TO WX. AT THIS POINT, I DECIDED TO HEAD S ALONG THE SHORE LINE TO GET BACK TO ZZZ. I WAS E OF ZZZ AT 1000 FT WHEN I CALLED TWR TO ENTER THE AIRSPACE USING THE COASTAL ARR. THEY ADVISED ME THAT THE FIELD WAS GOING IFR. TWR TOLD ME NOT TO ENTER, SO I PROCEEDED TO HEAD BACK TO THE SHORE LINE TO HOLD STATION. I ASKED TWR TO CHK THE WX FOR ME. TWR RPTED THAT AS FAR AS THEY COULD TELL OUT TO 40 NM WAS HVY PRECIP. TO THE S AND N ZZZ1 AND ZZZ2 WERE BOTH STILL VISIBLE. I MADE CONTACT WITH ZZZ2 TO ENTER THEIR AIRSPACE. I PROCEEDED TO HEAD INTO ZZZ2. AT ABOUT 2 MI OUT, THE ARPT WENT IFR. LOOKING TO THE S, ZZZ1 WAS NOT VISIBLE. I HEADED TO MY SECOND ALTERNATE ARPT (ZZZ3) NBOUND ALONG THE SHORE LINE AND CONTACTED THE TWR TO ENTER AIRSPACE. THEY INFORMED ME THE FIELD WAS ABOUT TO GO IFR AND BE PREPARED TO HEAD S BOUND. AT THIS POINT, I LOST SIGHT WITH THE ZZZ3 AREA, SO I PROCEEDED SBOUND TO ZZZ4. IN DOING SO, IT WAS EVIDENT THAT THE WX WAS ONE HUGE LINE WITH NO BREAK IN IT. VISIBILITY WAS DETERIORATING RAPIDLY AS THE LINE OF WX WAS PASSING OVER ME. I LOST VISUAL REF TO THE HORIZON IN ALL DIRECTIONS. ALL I COULD SEE WAS THE BEACH BELOW ME. AT THIS TIME I WAS BEING PUSHED DOWN BY THE WX WITH NOWHERE TO GO BUT DOWN ON THE BEACH. I MADE 1 SBOUND PASS TO MAKE SURE THE AREA WAS CLR. ON THE SECOND PASS, I DROPPED THE BANNER AND LANDED ON THE BEACH. I SECURED THE PLANE AND REMOVED THE BANNER FROM THE WATER. AFTER THAT, I DECIDED TO MOVE THE PLANE FARTHER AWAY FROM THE WATER LINE, SO I TAXIED THE PLANE ABOUT 20 FT FURTHER ONTO THE BEACH.

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.