Your preflight should not be complete without checking PIREPS. See current PIREPS at https://www.aviationweather.gov/airep.
Can you decode these PIREPS?
UUA = Urgent Pilot Report
OV = Over: 30 miles from IPL (Imperial VORTAC) on a 260 heading
TM: 05:00 Zulu = 21:00 Pacific time (9 PM) in California
FL = Altitude: 9,000 feet
TP = Type: PA28 = Piper Cherokee
TB SEV = Severe Turbulence
RM = Remarks: Down draft, loss of 2,000 Feet