STORM SUMMARY NUMBER 01 FOR MISSISSIPPI AND OHIO RIVER VALLEYS
HEAVY RAIN EVENT
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD 
400 PM CDT SUN MAY 01 2011
 
...ANOTHER ROUND OF HEAVY RAIN IS AFFECTING THE LOWER MISSISSIPPI
RIVER VALLEY...WORSENING ALREADY MAJOR FLOODING IN THE REGION...  

 
FLOOD AND FLASH FLOOD WATCHES AND WARNINGS ARE IN EFFECT FOR MUCH
OF THE LOWER AND CENTRAL MISSISSIPPI RIVER VALLEY AS WELL AS
PORTIONS OF THE OHIO RIVER VALLEY.
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 300 PM CDT...A SURFACE LOW WITH A CENTRAL PRESSURE OF 996
MB...29.41 INCHES...WAS CENTERED ACROSS WEST CENTRAL ONTARIO. A
FRONTAL BOUNDARY EXTENDED SOUTH FROM THIS LOW THROUGH THE GREAT
LAKES AND INTO THE CENTRAL MISSISSIPPI RIVER VALLEY AND SOUTHERN
PLAINS. NATIONAL WEATHER SERVICE RADARS AND SURFACE OBSERVATIONS
INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS ACROSS MUCH OF
THE SOUTHERN PLAINS...CENTRAL AND SOUTHERN MISSISSIPPI RIVER
VALLEY...AND OHIO RIVER VALLEY. MODERATE TO HEAVY RAIN WAS
OCCURRING IN MANY LOCATIONS. SOME OF THE THUNDERSTORMS WERE SEVERE
ACROSS AREAS FROM NORTHEAST TEXAS NORTHEASTWARD TO WESTERN
TENNESSEE.

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 700 PM CDT FRI APR
30 THROUGH 300 PM CDT MON MAY 01...

...ARKANSAS...
MORGAN                                8.70                     
MAYFLOWER 2.4 ESE                     7.50                     
AUSTIN 2.5 SSE                        6.71                     
CABOT 2 NE                            6.71                     
LITTLE ROCK 3 W                       6.45                     
SHERWOOD 1.8 NNW                      5.92                     
HOT SPRINGS VILLAGE 1.2 E             5.79                     
NORTH LITTLE ROCK 1.6 NNE             4.47                     
LITTLE ROCK AFB                       4.46                     
MOUNT IDA                             4.34                     
STUTTGART MUNI ARPT                   4.08                     
HOT SPRINGS/MEMORIAL FIELD            3.42                     
CORNING 2.1 W                         2.58                     
NORMAN 0.3 WNW                        2.38                     
BLYTHEVILLE AIRPORT                   2.36                     

...TENNESSEE...
JACKSON/MCKELLAR                      2.37                     


THE FRONTAL BOUNDARY ACROSS THE OHIO AND MISSISSIPPI RIVER VALLEY
WILL MOVE SLOWLY EASTWARD...BRINGING SHOWERS AND THUNDERSTORMS TO
MUCH OF THE EASTERN U.S. THROUGH MIDWEEK. THE SOUTHERN PORTION OF
THE BOUNDARY...ACROSS THE MID AND DEEP SOUTH...WILL REMAIN NEARLY
STATIONARY. THEREFORE...THE POTENTIAL FOR HEAVY RAIN ACROSS
ALREADY SATURATED AREAS OF THE MISSISSIPPI AND OHIO RIVER VALLEYS
WILL CONTINUE THROUGH TUESDAY. ADDITIONAL RAIN FALL AMOUNTS OF 3
TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS...CAN BE EXPECTED ACROSS
PORTIONS OF THE MISSISSIPPI AND OHIO RIVER VALLEYS THROUGH TUESDAY
EVENING. MANY STREAMS AND RIVERS ACROSS THE REGION ARE ALREADY
EXPERIENCING MAJOR FLOODING...AND RECORD FLOODING IS FORECAST TO
OCCUR AT SOME LOCATIONS. PLEASE REFER TO PRODUCTS FROM NATIONAL
WEATHER SERVICE LOCAL WEATHER FORECAST OFFICES FOR SPECIFIC
DETAILS ON FLOODING IN YOUR AREA.

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

RYAN