Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Human-Machine Interface
Aircraft Equipment Problem Critical; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter Loss Of Aircraft Control; Inflight Event / Encounter Fuel Issue
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance; Air Traffic Control Issued Advisory / Alert; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Landed As Precaution; Flight Crew Regained Aircraft Control
Aircraft; Weather
During our flight from ZZZ to ZZZ1 severe weather storms had begun to move into our course of route. ATC advised us of the weather and gave us a reroute to the ZZZ2 VOR which was significantly off route from our original flight plan. Unfortunately; after re-calulating our new flight plan and fuel; we noticed that due to our reroute we would be landing at ZZZ1 with minimum fuel. After getting our new performance numbers we slowed down to long range cruise and advised dispatch and ATC of our fuel situation. Letting them know that if we continued to fly to the ZZZ2 VOR that we would be landing with min fuel. We were given 'deviations as necessary direct ZZZ1 when able'. Our radar showed two storm cells about 3-5 miles in diameter. We decided to deviate around these cells and proceed direct ZZZ1 once clear of the storm. While navigating around these storms we began to experience updrafts and downdrafts. During our course of route the autopilot was engaged and suddenly began to deviate from FL290 by +800/-300 ft. The VSI (Vertical Speed Indicator) showed a climb and descent of +/-4;000 feet per min and the cockpit windows became fogged. During this time the airplane did not feel like it was pitching this extreme and did not exceed +5/-2 degrees. Altitude miscompare flags appeared on our PFD'S (Primary Flight Display) and the VSI had a RED X for less than 5 seconds. I began to run the QRH. ATC contacted us about our altitude and asked if we were having a rough ride. We responded and advised of the situation and were cleared to descend to FL240 at pilot's discretion. After the airplane was stable at FL290 we descended to FL240 and landed at ZZZ1 with 2;400 pounds of fuel and no further incidents.
EMB-145 flight crew reported severe weather in cruise.