LJ25 DEP FROM MDW EXPERIENCED CONFUSION WITH ATC'S DIRECTIONS DURING WX DEV PROCS.

Narrative

WE WERE ON RADAR VECTORS DURING THE CLB PHASE ON A HDG OF 280 DEGS. DEP ASSIGNED US TO A HDG OF 310 DEGS WHICH WOULD HAVE PUT US INTO THE CTR OF A STORM JUST OFF TO OUR R. WE ADVISED THAT WE COULD NOT ACCEPT THE CLRNC WHICH SEEMED TO UPSET THE CTLR. WE ADVISED THAT WE WOULD NEED ANOTHER 5-8 MI ON THE CURRENT HDG. AT THAT TIME; WE WOULD HAVE TO TURN TO AVOID ANOTHER STORM AT OUR 12 O'CLOCK POS. WE WERE UNDER THE IMPRESSION THAT THE CTLR WANTED A TURN TO THE NW AS SOON AS POSSIBLE; SO WHEN WE WERE ABLE; WE TURNED TO A HDG OF 310 DEGS. WHEN WE ADVISED THE CTLR OF THIS WE WERE HEAVILY CRITICIZED FOR TURNING TO THE HDG WITHOUT IT BEING ASSIGNED. HE ASKED IF THERE WAS SOMETHING WE WERE AVOIDING AND WE REPLIED IN THE AFFIRMATIVE. WE THEN ACCEPTED THE NEXT HDG ASSIGNMENT; L TO 220 DEGS; SOONER THAN WE SHOULD HAVE AND RECEIVED A ROUGHER THAN EXPECTED RIDE IN RETURN FOR OUR COMPLIANCE. SOME CTLRS SEEM INFLEXIBLE AND UNWILLING TO WORK WITHIN THE CONSTRAINTS REQUIRED BY FLT CREWS IN THE PROCESS OF AVOIDING DANGEROUS WX. THEY ARE EASILY ANGERED. THEY DON'T ASK WHAT WE CAN DO FOR THEM WHEN WE ARE UNABLE TO COMPLY WITH THEIR DIRECTIONS.