Narrative:

During descent for arrival and approach; we had high workload under degrading IMC night weather conditions with thunderstorms; heavy rain; and moderate turbulence; coupled with change in arrival; descending at non-published to published speeds; and 3 runways changes. The last runway change was given below 10000 feet; under heavy rain; and moderate turbulence. First officer (first officer) asked ca (captain) to set up the cockpit and brief the approach since it was below 10000 feet; and PF had to guard the controls; especially with those weather conditions. During the briefing for the approach; ca and first officer had good shared mental model on the aspects of the approach and agreed to use the gust factor; having approach speed at between 140 and 145 knots with flaps 22; with winds at 360/15g25. At about 2000 feet; we were hit by lightning; under moderate turbulence. Stabilized approach with crosswind and landing with crosswind correction; within touchdown zone and standing water. After nose touchdown; airplane hydroplaned; ca came on controls to try to keep it on centerline; and told first officer to get off the brakes. First officer went off the controls as ca already had control of the airplane. Airplane veered off to the right side of the runway. Excursion about 20 feet off the side of the runway; coming to a stop about 50-100 feet from the 3000 foot mark. No one was injured; passengers were all in good spirits; flight attendant did an exceptional job taking care of the passengers. Firefighters were on the scene within a few minutes; helped deplaned passengers and transfer them to a bus. After passengers and their luggage were cared for and on their way to the terminal; ca and first officer did a walk around and didn't find any apparent damage to the airplane. Degrading IMC night weather; with high workload and several ATC changes in arrival and runways; under 10000 feet; in moderate turbulence. Lighting strike on final; heavy rain; gusty winds; and ceilings; all way down to 500 feet. Standing water and strong gusty crosswinds were present during touchdown.under expected high workload and night degrading IMC weather conditions; ca and first officer had good shared mental model about this arrival; approach and landing. We believed we were well prepared. Company could use training with scenario incorporating standing water; night IMC; heavy rain; gusty crosswinds; lightning strike; changing in arrivals and runways - all the threats associated with this event.

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Original NASA ASRS Text

Title: EMB-145 First Officer reported the flight crew lost directional control on landing roll due to workload and weather; resulting in a runway excursion.

Narrative: During descent for arrival and approach; we had high workload under degrading IMC night weather conditions with thunderstorms; heavy rain; and moderate turbulence; coupled with change in arrival; descending at non-published to published speeds; and 3 runways changes. The last runway change was given below 10000 feet; under heavy rain; and moderate turbulence. FO (First Officer) asked CA (Captain) to set up the cockpit and brief the approach since it was below 10000 feet; and PF had to guard the controls; especially with those weather conditions. During the briefing for the approach; CA and FO had good shared mental model on the aspects of the approach and agreed to use the gust factor; having approach speed at between 140 and 145 knots with flaps 22; with winds at 360/15G25. At about 2000 feet; we were hit by lightning; under moderate turbulence. Stabilized approach with crosswind and landing with crosswind correction; within touchdown zone and standing water. After nose touchdown; airplane hydroplaned; CA came on controls to try to keep it on centerline; and told FO to get off the brakes. FO went off the controls as CA already had control of the airplane. Airplane veered off to the right side of the runway. Excursion about 20 feet off the side of the runway; coming to a stop about 50-100 feet from the 3000 foot mark. No one was injured; passengers were all in good spirits; FA did an exceptional job taking care of the passengers. Firefighters were on the scene within a few minutes; helped deplaned passengers and transfer them to a bus. After passengers and their luggage were cared for and on their way to the terminal; CA and FO did a walk around and didn't find any apparent damage to the airplane. Degrading IMC night weather; with high workload and several ATC changes in arrival and runways; under 10000 feet; in moderate turbulence. Lighting strike on final; heavy rain; gusty winds; and ceilings; all way down to 500 feet. Standing water and strong gusty crosswinds were present during touchdown.Under expected high workload and night degrading IMC weather conditions; CA and FO had good shared mental model about this arrival; approach and landing. We believed we were well prepared. Company could use training with scenario incorporating standing water; night IMC; heavy rain; gusty crosswinds; lightning strike; changing in arrivals and runways - all the threats associated with this event.

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.