ZOB controller experienced operational error at FL320 during busy traffic and WX deviations.

Attributes
ACN	618115
Time
Date	200405
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : fnt.vortac
State Reference	MI
Altitude	msl single value : 32200
Environment
Weather Elements	Rain Thunderstorm
Light	Night
Aircraft 1
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 135 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute other
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 135 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	enroute other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	618115
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne less severe inflight encounter : weather non adherence : clearance non adherence : required legal separation other spatial deviation
Independent Detector	atc equipment : conflict alert other controllera
Resolutory Action	flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 15000 vertical : 900
Supplementary
Problem Areas	ATC Human Performance Weather Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X was direct cycg, V90 from grb. Air carrier Y was deviating on a 300 degree heading, no factor at the time. A min later, air carrier Y was heading 030 degrees to 040 degrees into air carrier X. We had 15 aircraft, all deviating.

Original NASA ASRS Text

Title: ZOB CTLR EXPERIENCED OPERROR AT FL320 DURING BUSY TFC AND WX DEVS.

Narrative: ACR X WAS DIRECT CYCG, V90 FROM GRB. ACR Y WAS DEVIATING ON A 300 DEG HDG, NO FACTOR AT THE TIME. A MIN LATER, ACR Y WAS HDG 030 DEGS TO 040 DEGS INTO ACR X. WE HAD 15 ACFT, ALL DEVIATING.

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.