Flash Flood Guidance
Issued by NWS

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000
AWUS01 KWNH 271501
FFGMPD
MOZ000-IAZ000-KSZ000-NEZ000-271753-

MESOSCALE PRECIPITATION DISCUSSION 0327...CORRECTED
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1100 AM EDT WED AUG 27 2014

CORRECTED FOR INCLUSION OF SOUTERN IA

AREAS AFFECTED...NORTHWESTERN MO...NORTHEASTERN KS...SOUTHERN IA

CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE

VALID 271453Z - 271753Z

SUMMARY...BACKBUILDING CONVECTION MAY PERSIST FOR THE NEXT FEW
HOURS...PRODUCING ADDITIONAL AMOUNTS OF 2-3 INCHES ACROSS AREAS
ALREADY IMPACTED BY HEAVY RAINS...FURTHER RAISING FLASH FLOODING
CONCERNS.

DISCUSSION...WHILE THE INITIAL CONVECTION THAT DEVELOPED EARLIER
IN THE DAY ACROSS NORTHERN MO AND SOUTHERN IA IS NOW MOVING
PROGRESSIVELY TO THE EAST...LOW LEVEL INFLOW HAS AMPLIFIED SOME
BACK TO THE WEST...FOSTERING REDEVELOPING/BACKBUILDING CONVECTION
AS IT INTERACTS WITH A STRING OF MID-LEVEL IMPULSES LIFTING UP
FROM THE SOUTH.  AS IT MOVES INTO AN AREA OF ENHANCED LOW LEVEL
CONVERGENCE ALONG A LOW LEVEL BOUNDARY/WAVE...THE AFOREMENTIONED
LOW LEVEL INFLOW CONTINUES TO SUPPORT PWS ON THE ORDER OF 1.9-2+
INCHES ACROSS THE OUTLOOK AREA.

THE 13Z HRRR SHOWS ADDITIONAL ACCUMULATIONS OF 2-3+ INCHES FOR THE
NEXT FEW HOURS ACROSS PORTIONS OF THE REGION...WHICH MAY RESULT IN
FLASH FLOODING.

PEREIRA

...PLEASE SEE WWW.WPC.NCEP.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...LSX...DVN...DMX...EAX...OAX...TOP...

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

LAT...LON   39729635 40319534 40999417 40979268 40349209 39679345
            39539504 39459597 39729635



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