STORM SUMMARY NUMBER 1 FOR SOUTHERN PLAINS TO THE OHIO VALLEY
HEAVY RAINFALL EVENT
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM CDT FRI APR 28 2017

...HEAVY RAINFALL EVENT WILL BEGIN TO UNFOLD TONIGHT AND INTO
TOMORROW ACROSS THE PLAINS AND INTO THE MISSISSIPPI VALLEY... 

FLASH FLOOD WATCHES ARE IN EFFECT FOR EASTERN OKLAHOMA NORTHWARD
TO SOUTHERN INDIANA...SOUTHWESTERN MICHIGAN...SOUTHWESTERN
OHIO...AND NORTHERN KENTUCKY. THESE REGIONS ALSO HAVE POCKETS OF
FLOOD WARNINGS AND ADVISORIES.

FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 300 PM CDT...A LOW WITH A CENTRAL PRESSURE OF 1003 MB...29.62
INCHES...WAS LOCATED IN CENTRAL KANSAS. A COLD FRONT WAS DRAPED
ACROSS THE CENTRAL HIGH PLAINS AND INTO THE CENTRAL ROCKIES...AND
WAS BEGINNING TO SURGE SOUTHWARD. FARTHER SOUTH...A LOW WITH A
CENTRAL PRESSURE OF 999 MB...29.50 INCHES...WAS LOCATED NEAR THE
RED RIVER VALLEY IN TEXAS.  A WARM FRONT WAS EXTENDING FROM THE
LOW AND STRETCHED EASTWARD ACROSS THE SOUTHERN PLAINS TO THE
CENTRAL APPALACHIANS...BRINGING WITH IT UNSTABLE...MOIST AIR FROM
THE GULF OF MEXICO. NATIONAL WEATHER SERVICE DOPPLER RADARS AND
SURFACE OBSERVATIONS SHOWED A CLUSTER OF THUNDERSTORMS QUICKLY
MOVING NORTHEAST ACROSS SOUTHERN ILLINOIS AND INTO INDIANA. LIGHT
SHOWERS WERE ALSO OBSERVED ACROSS THE MIDDLE MISSISSIPPI VALLEY.
LIGHT SNOW WAS ALSO BEING REPORTED ACROSS WESTERN NEBRASKA AND
ACROSS THE HIGHER ELEVATIONS OF THE CENTRAL ROCKIES. 


A WIDESPREAD HEAVY RAIN EVENT IS EXPECTED TO UNFOLD ACROSS MUCH OF
THE CENTRAL U.S. BEGINNING LATE FRIDAY AND EXTENDING THROUGH THE
WEEKEND. THIS EVENT HAS THE POTENTIAL TO BRING FLASH FLOODING AND
SEVERE WEATHER TO PORTIONS OF THE SOUTHERN PLAINS...MIDDLE AND
LOWER MISSISSIPPI VALLEYS...AND EASTWARD INTO PORTIONS OF THE OHIO
AND TENNESSEE VALLEYS. THE INITIAL FOCUS OF HEAVIER CONVECTIVE
RAINS IS EXPECTED ALONG THE STATIONARY FRONTAL BOUNDARY THAT WILL
SET UP FROM EASTERN OKLAHOMA EAST-NORTHEASTWARD INTO THE OHIO
VALLEY FRIDAY EVENING. STORMS WILL GRADUALLY INCREASE AND DEVELOP
SOUTHWARD ON SATURDAY AND SUNDAY AS LOW PRESSURE MOVES SLOWLY
EASTWARD FROM THE SOUTHERN PLAINS TOWARD THE MIDDLE MISSISSIPPI
VALLEY AND ITS TRAILING COLD FRONT PUSHES SLOWLY EASTWARD INTO THE
LOWER MISSISSIPPI VALLEY BY SUNDAY. STRONG INFLUX OF MOIST AIR
FROM THE GULF OF MEXICO COMBINED WITH THE VERY SLOW MOVEMENT OF
THE SYSTEM OVER THE NEXT FEW DAYS PROMISES TO BRING COPIOUS
AMOUNTS OF RAIN TO THIS REGION WITH WIDESPREAD 3 TO 6 INCH RAINS
OVER PARTS OF OKLAHOMA...EASTERN TEXAS AND EASTWARD THROUGH MUCH
OF THE MIDDLE AND LOWER MISSISSIPPI VALLEYS. WITHIN THIS
REGION...ISOLATED STORM TOTAL AMOUNTS COULD POSSIBLY EXCEED 8
INCHES. GIVEN THE VOLUME OF EXPECTED RAINS...THIS SYSTEM HAS THE
POTENTIAL TO PRODUCE WIDESPREAD RIVER FLOODING IN ADDITION TO
DANGEROUS FLASH FLOODING. PLEASE CONTINUE TO MONITOR HOW THIS
EVENT EVOLVES AND STAY AWARE OF ANY WARNINGS OR ADVISORIES ISSUED.


THE NEXT STORM SUMMARY WILL BE ISSUED BY THE WEATHER PREDICTION
CENTER AT 1000 PM CDT. PLEASE REFER TO YOUR LOCAL NATIONAL WEATHER
SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS EVENT.

REINHART