B737-800 captain reported encountering 'severe' wake turbulence departing phx in trail of an A321.

Attributes
ACN	1583449
Time
Date	201810
Local Time Of Day	0001-0600
Place
Locale Reference	PHX.Airport
State Reference	AZ
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Route In Use	SID ZEPER 1
Flight Plan	IFR
Aircraft 2
Make Model Name	A321
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Inflight Event / Encounter Wake Vortex Encounter

Narrative:

Takeoff runway 25R phx closely behind [an] A321. Waited for the A321's rotation before starting my takeoff roll. On initial climb at about 200 ft AGL started getting into severe wake turbulence. The turbulence felt like a punch with a sharp left roll. After about 5 shots asked departure for a 10 degree left turn off the zeper 1. Cause: insufficient separation between departing aircraft. Suggestions: more spacing between departing aircraft.

Original NASA ASRS Text

Title: B737-800 Captain reported encountering 'severe' wake turbulence departing PHX in trail of an A321.

Narrative: Takeoff Runway 25R PHX closely behind [an] A321. Waited for the A321's rotation before starting my takeoff roll. On initial climb at about 200 FT AGL started getting into severe wake turbulence. The turbulence felt like a punch with a sharp left roll. After about 5 shots asked Departure for a 10 degree left turn off the ZEPER 1. Cause: insufficient separation between departing aircraft. Suggestions: more spacing between departing aircraft.

Data retrieved from NASA's ASRS site 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.