
From NWS Duluth discussion
HEIGHTS WILL BEGIN FALLING IN THE NORTHERN PLAINS TONIGHT...AS
A SHORTWAVE STRENGTHENS AND BEGINS TO DEEPEN. STRONG H5 DIVERGENCE
BETWEEN A JET SEGMENT IN THE MANITOBA LAKES REGION LATER TONIGHT
AND A MUCH STRONGER JET STREAK MOVING THROUGH THE NORTHERN ROCKIES
WILL RESULT IN WIDESPREAD AND STRONG UPPER LEVEL DIVERGENCE.
HEIGHTS WILL FALL...RESULTING IN THE DEVELOPMENT OF AN MCS ACROSS
THE NORTHERN PLAINS. STILL SOME QUESTION AS TO THE EVOLUTION
AND PATH OF THE MCS...BUT BASED ON GFS ENSEMBLE MEMBERS...IT
SHOULD MOVE ACROSS NORTHERN MINNESOTA. WILL HAVE LIKELY POPS
WEST TONIGHT...AND SPREAD ACROSS THE REST OF THE CWA ON SATURDAY.
PRECIPITABLE WATER VALUES REACH AROUND 1.30 INCHES ON SATURDAY
SO COULD BE SOME MODERATE TO HEAVY RAINFALL AMOUNTS IN SPOTS.