RPTR EXPERIENCES WIND SHEAR WARNING AND TCASII RA.

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AT APPROX XA15 EST WE WERE CLRED FOR AN APCH FOR RWY 05L AT PVD; RI. WX AT THE FIELD WAS RPTED 1500 FT OVCST WITH VISIBILITY AT 4 MI AND LIGHT RAIN AND FOG. THE WIND WAS RPTED AS 28 KTS GUSTING 36 KTS WITH PEAK WINDS OF 50 PLUS; AND MODERATE TURB RPTED ON FINAL APCH. THE FO WAS FLYING. AFTER RECEIVING THE ATIS INFO THE FO AND I DISCUSSED THE WX AND CONDITIONS AND DECIDED THAT I WOULD FLY THE APCH. I QUERIED APCH CTL AND WAS INFORMED THAT ACFT WERE LNDG AT PVD. I REQUESTED THAT; IN THE EVENT OF A MISSED APCH THAT WE BE CLRED STRAIGHT AHEAD TO 10000 FT MSL. WE WERE CLRED TO 6000 FT IN THE EVENT OF A MISSED APCH AND TOLD WE COULD EXPECT 10000 FT. OUR RADAR INDICATED THAT THERE WAS NO SIGNIFICANT WX ON OUR FLT PATH ALTHOUGH THERE WERE SOME BUILDUPS IN OUR VICINITY. AT 4000 FT MSL; THE WINDS ON THE FMS INDICATED 040 DEGS 101 KTS AND ALTHOUGH THE RIDE WAS A LITTLE BUMPY; IT WAS OK. AT APPROX 24 DME WE WERE CLRED TO 2000 FT TO INTERCEPT THE GS. I REQUESTED THAT WE STAY AT 4000 FT FOR A LITTLE WHILE LONGER BUT WAS INSTRUCTED THAT I NEEDED TO DSND AT THAT TIME. THE ACFT WAS CONFIGURED WITH SLATS AND WE WERE INDICATING 220 KIAS. I STARTED THE ACFT DOWN USING THE AUTOPLT WITH A 1000 FPM RATE OF DSCNT. ALMOST IMMEDIATELY WE ENCOUNTERED 'MODERATE' TURB. PASSING THROUGH ABOUT 2500 FT MSL; I NOTICED THAT THE ACFT WAS DSNDING IN EXCESS OF 2000 FPM AND WOULD NOT CATCH THE 2000 FT MSL ALT. ABOUT THAT TIME THE 'WIND SHEAR' WARNING ACTUATED AND THE ACFT DSNDED TO APPROX 1600 FT MSL. I DISCONNECTED THE AUTOPLT AND APPLIED PWR -- WE BEGAN TO CLB RAPIDLY. I ANNOUNCED THAT WE WERE GOING MISSED APCH AND ASKED THAT THE FO RELAY THAT TO DEP CTL. PASSING THROUGH ABOUT 3000 FT MSL; THE TCASII ANNOUNCED TFC AT ABOUT OUR 11:30 POS HIGH AND COMMANDED A DSCNT. I IMMEDIATELY LOOKED UP AND SAW 2 LIGHTS SLIGHTLY L OF OUR 12 O'CLOCK POS. I WENT INTO AN IMMEDIATE HARD R TURN AND PUSHED THE NOSE OF THE ACFT OVER. SOMEWHERE DURING THIS MANEUVER THE 'WINDSHEAR' WARNING SOUNDED AGAIN AS DID THE 'SLATS OVERSPD' WARNING. OUR JUMPSEAT RIDER TOLD ME TO WATCH MY ATTITUDE. WE WERE IN A 70 DEG R BANK TURN WITH A 5 DEGS NOSE LOW ATTITUDE PASSING A LITTLE BELOW 3000 FT MSL AT APPROX 300 KIAS. SOMETIME DURING ALL OF THIS THE CTLR WAS ASKING WHERE WE WERE GOING; ANNOUNCING THE TFC; AND TELLING US TO LEVEL OFF AT 3000 FT MSL. AFTER THE SIT WAS UNDER CTL WE WERE ASKED OUR INTENTIONS. WE STATED THAT WE WISHED TO PROCEED TO OUR ALTERNATE BANGOR; ME. AFTER FURTHER DISCUSSIONS WITH FLT CTL; WE PROCEEDED TO BDL. I TALKED WITH APCH CTL AFTER THIS EVENT AND ASKED WHY THERE WAS AN AIRPLANE 2000 FT ABOVE ME ON THE SAME APCH COURSE. I WAS TOLD THAT BECAUSE I WOULD HAVE BEEN TRAVELING AT A HIGHER SPD THAT I SHOULD HAVE PASSED AHEAD OF HIM BEFORE HE BEGAN HIS DSCNT AND THAT THE CTLR DID NOT EXPECT ME TO GAR AT 18 MI FROM THE FIELD. I TOLD HIM THAT I DIDN'T EXPECT TO ENCOUNTER WIND SHEAR WHICH COMMANDED A CLB EITHER. I THINK WE BOTH LEARNED SOMETHING FROM THIS. THE N ATLANTIC HAS NEVER LOOKED ANY DARKER OR SCARIER!