MESOSCALE PRECIPITATION DISCUSSION 0104
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
818 PM EDT FRI JUN 14 2013
 
AREAS AFFECTED...EASTERN NEB...WESTERN IA 
 
CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE 
 
VALID 150017Z - 150430Z
 
SUMMARY...THERE WILL BE AN INCREASING THREAT OF FLASH FLOODING
OVER PARTS OF EASTERN NEB AND WESTERN IA. 

DISCUSSION...THE THREAT OF FLASH FLOODING WILL BE INCREASING
THROUGH THE EVENING OVER PORTIONS OF NEB AS CELLS MOVE TO THE
NORTHEAST ALONG A SOUTHWEST TO NORTHEAST LINE.  THIS WAS ALONG AND
AHEAD OF A COLD FRONT MAKING ITS WAY ACROSS THE AREA.  THE STORMS
WILL BE ENCOUNTERING DEEPER MOISTURE WHICH SHOULD INCREASE THE
RAINFALL EFFICENCY AND THE RISK OF HEAVY RAIN OVER EXTREME EASTERN
NEB AND WESTERN IA.  THE APPROACH OF A LOW LEVEL JET WITH SPEEDS
AROUND 35 KTS WILL ENHANCE THE LOW LEVEL LIFT NORTH OF THE WARM
FRONT IN ADDITION TO DRAWING IN MORE MOISTURE.  PARTS OF WESTERN
IA ALREADY RECEIVED MODERATE TO LOCALLY HEAVY RAINFALL THIS
AFTERNOON AND EVENING WHICH HAS RESULTED IN AREAS OF LOWERED FLASH
FLOOD GUIDANCE. 

RAINFALL RATES APPROACHING 2 INCHES PER HOUR ARE POSSIBLE. 
LOCALIZED STORM TOTAL AMOUNTS OF 3 INCHES ARE POSSIBLE. 

BANN

ATTN...WFO...DMX...FSD...OAX...GID...

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

LAT...LON   41879336 40879283 40849378 40859504 40979650 40649758
            40609877 41389858 42329628 42389453 41879336