MESOSCALE PRECIPITATION DISCUSSION 0652
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
210 PM EDT WED SEP 07 2016
 
AREAS AFFECTED...SOUTHERN WI...NORTHERN IL...CENTRAL AND EASTERN
IA 
 
CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE 
 
VALID 071800Z - 080000Z
 
SUMMARY...A SERIES OF SHORTWAVES INTERACTING WITH DEEP MOISTURE
ALONG A STALLED BOUNDARY MAY PRODUCE MULTIPLE ROUNDS OF
CONVECTION...RESULTING IN HEAVY RAINFALL ACCUMULATIONS AND THE
THREAT FOR FLASH FLOODING.

DISCUSSION...A STALLED FRONTAL BOUNDARY EXTENDING FROM LOWER
MICHIGAN BACK INTO THE CENTRAL PLAINS IS PROVIDING A FOCUS FOR
DEEP MOISTURE...WITH THE LATEST SPC MESOANALYSIS INDICATING PWS OF
2-2.25 INCHES ACROSS THE HIGHLIGHTED AREA.  SOUTHWESTERLY INFLOW
OF 30-40 KTS AT 850MB IS EXPECTED TO HELP MAINTAIN THESE HIGH PWS
THROUGH THE AFTERNOON HOURS.  AS A SERIES OF SHORTWAVES TRAVERSE
THE REGION AND INTERACT WITH THIS DEEP MOISTURE...SEVERAL OF THE
HI-RES GUIDANCE MEMBERS SHOW MULTIPLE ROUNDS OF
CONVECTION...PRODUCING WIDESPREAD 1-2 INCH ACCUMULATIONS...WITH
LOCALLY HEAVIER AMOUNTS OCCURRING THROUGH 00 UTC.  THESE AMOUNTS
MAY POSE FLASH FLOOD CONCERNS...PARTICULARLY ACROSS PORTIONS OF
SOUTHERN WISCONSIN THAT HAVE BEEN IMPACTED BY RECENT HEAVY RAINS.

PEREIRA

ATTN...WFO...ARX...DMX...DVN...LOT...MKX...

ATTN...RFC...MBRFC...NCRFC...

LAT...LON   43658792 43088791 42408806 41828932 41349169 
            40649409 41459396 42569199 43638943