EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Aircraft Equipment Problem Less Severe
Flight Crew Rejected Takeoff; General Maintenance Action
Aircraft; Human Factors
On the takeoff roll at 75 knots; I heard the master caution chime and moved my eyes to the EICAS.  On the screen I read in my head; E2 REV DISAGREE.  Before I could verbalize the message; the CA who was PF; called an abort.  He believes the speed at abort was 95 knots.  I radioed ATC we were aborting takeoff and made a PA for the passengers to remain seated. The aircraft came to a stop and then we coordinated with ATC to taxi off the runway slowly.  On a taxiway with the parking brake set; the CA called Maintenance Control and they instructed us to gate return.  Local Maintenance MEL'd the E2 thrust reverser and we continued on to our destination.  Threat was gusty winds in EWR which may have slightly affected the stowage of the thrust reverser; causing the message to generate.  Error on my part as PM was not verbalizing the message immediately; wasting a few fast moving seconds.  UAS was the high speed aborted takeoff.
EMB-145 First Officer reported noting an E2 REV DISAGREE light on takeoff roll at about 95 kts that resulted in a rejected takeoff.