B737 captain reported encountering wake turbulence in trail of a B737 on takeoff from las.

Attributes
ACN	1248021
Time
Date	201503
Local Time Of Day	1201-1800
Place
Locale Reference	LAS.Airport
State Reference	NV
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Aircraft 2
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Inflight Event / Encounter Wake Vortex Encounter Inflight Event / Encounter Loss Of Aircraft Control

Narrative:

Immediately after a B737 was cleared for takeoff from 19L; we were cleared to line up and wait and to keep the B737 in sight. Just as the B737 lifted off the runway; we were cleared for takeoff. By the time we began our takeoff roll; the B737 was about 2.5 miles from our location. We rotated past where the B737 had rotated and our climb profile was beneath theirs. At about 300 to 500 feet AGL we encountered wake turbulence which rolled the aircraft both left and right about 15 to 20 degrees. I advised the tower of our encounter as he handed us off to departure control.

Original NASA ASRS Text

Title: B737 Captain reported encountering wake turbulence in trail of a B737 on takeoff from LAS.

Narrative: Immediately after a B737 was cleared for takeoff from 19L; we were cleared to line up and wait and to keep the B737 in sight. Just as the B737 lifted off the runway; we were cleared for takeoff. By the time we began our takeoff roll; the B737 was about 2.5 miles from our location. We rotated past where the B737 had rotated and our climb profile was beneath theirs. At about 300 to 500 feet AGL we encountered wake turbulence which rolled the aircraft both left and right about 15 to 20 degrees. I advised the tower of our encounter as he handed us off to departure control.

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.