Medium Transport; Low Wing; 2 Turbojet Eng
Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 100; Flight Crew Total 6100; Flight Crew Type 785
Situational Awareness
Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Provided Assistance; Flight Crew Diverted; Flight Crew Requested ATC Assistance / Clarification
Chart Or Publication; Procedure; Weather
The reason I am writing this report; is to see if it is possible to improve on TAF; and METAR information.We left ZZZ airport at night at around XA00; going to AEX.Forecast is understandable that it varies; and changes; but the METAR should provide additional information. Basically when the weather is really bad.METAR showing from XB50 to XE09. The only thing mentioned is +TSRA (heavy thunder showers; and rain); LTG (lightning) ALQDS (All quadrants). Also on the TAF it mentioned Gust of 40KT tempo [during a four hour time period].The ceiling and visibility on the METAR were within limits to shoot the approach; but when we arrived in the area; around 50 miles from the destination we could see the lightning show from above; and the clouds looked very violent; we knew it was a bad idea to proceed to the destination; or our 1st alternate airport; so center said ZZZ1 was clear. We proceeded there; landed and waited for a good 2 hours on the ground; until we weather moved to the east. We then departed ZZZ1 and proceeded to our initial intended destination AEX.The weather had moved to the east; and the landing was uneventful. Once we landed; i was told there were big sized hail on the airport; and tornadoes surrounding the area. We were taken to the hotel by line service personnel; on the way to the hotel there were flooded and obstructed roads by falling objects; we got to the hotel by taking the highway.The reason of my report is to see if there is a chance to improve on METAR information available. If we had gone to the airport AEX; we would have most probably flown throw hail damaging the aircraft. No hail was mentioned anywhere?
Corporate pilot reported that TAF's and METAR's used were inaccurate and could use improvement.