STORM SUMMARY NUMBER 8 FOR CENTRAL U.S. HEAVY RAIN EVENT
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
400 AM CDT MON APR 25 2011
 
...SIGNIFICANT HEAVY RAINFALL EVENT OVER THE OHIO AND MIDDLE TO
LOWER MISSISSIPPI RIVER VALLEYS IS EXPECTED TO PERSIST THROUGH THE
MIDDLE OF THE WEEK...
 
FLOOD AND FLASH FLOOD WATCHES AND WARNINGS ARE CURRENTLY IN EFFECT
ACROSS A BROAD REGION EXTENDING FROM EASTERN OKLAHOMA TO WESTERN
TENNESSEE AND NORTHEASTWARD INTO INDIANA AND EASTERN OHIO.  FLOOD
WARNINGS ARE ALSO IN EFFECT ALONG MOST OF THE MISSISSIPPI AND OHIO
RIVERS.
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 300 AM CDT...A STATIONARY FRONT WAS DRAPED ACROSS THE CENTRAL
AND EASTERN UNITED STATES...STRETCHING FROM NORTHERN TEXAS
NORTHEASTWARD INTO SOUTHERN NEW ENGLAND.  NATIONAL WEATHER SERVICE
RADARS AND SURFACE OBSERVATIONS INDICATED WIDELY SCATTERED
SHOWERS...WITH EMBEDDED THUNDERSTORMS...ALL ALONG THE BOUNDARY.  A
LARGE AND MORE ORGANIZED AREA OF CONVECTION...WITH REPORTS OF
HEAVY RAIN...WAS SLOWLY MOVING ACROSS ARKANSAS AND SOUTHERN
MISSOURI.  MORE ORGANIZED AREAS OF RAINFALL WERE ALSO OBSERVED
ACROSS PORTIONS OF NORTHEASTERN TEXAS...EASTERN
OKLAHOMA...SOUTHERN ILLINOIS...SOUTHERN INDIANA...NORTHERN
PENNSYLVANIA...AND WESTERN NEW YORK.

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 700 AM CDT FRI APR
22 THROUGH 400 AM CDT SUN APR 24...

...ARKANSAS...
SPRINGDALE 6 ENE                      8.68                     
FAYETTEVILLE/DRAKE FIELD              6.77                     
BENTONVILLE                           6.28                     
EUREKA SPRINGS 4 NNW                  6.02                     
HARRISON/BOONE CO. ARPT               5.96                     
ALPENA                                5.85                     
SILOAM SPRINGS/SMITH FIELD            5.50                     
ROGERS/CARTER FIELD                   5.02                     
LEAD HILL                             4.37                     
BERRYVILLE 5 NW                       4.09                     

...ILLINOIS...
CARBONDALE 1 WSW                      5.54                     
BUSH 2 ESE                            5.08                     
MURPHYSBORO 2 SW                      4.95                     
CHESTER 2 SSE                         4.75                     
CARBONDALE/MURPHYSBORO                4.66                     
OLD SHAWNEETOWN                       4.42                     
PLUMFIELD                             4.17                     
CARMI MUNI ARPT                       3.60                     
MOUNT VERNON/OUTLAND AIRPORT          2.80                     
LAWRENCEVILLE-VINCENNES INTL AP       2.58                     
MOUNT_CARMEL                          2.18                     

...INDIANA...
BRETZVILLE                            6.60                     
PALMYRA 4 ESE                         5.73                     
JASPER 6 ESE                          5.71                     
STENDAL                               5.68                     
HOLLAND 6 NW                          5.59                     
EVANSVILLE RGNL ARPT                  4.51                     
HUNTINGBURG                           4.46                     
BLOOMINGTON/MONROE CO. ARPT           2.55                     

...KENTUCKY...
PROSPECT 1 S                          7.29                     
PADUCAH/BARKLEY                       5.97                     
HENDERSON CITY                        5.26                     
FRANKFORT/CAPITAL CITY ARPT           4.90                     
EMINENCE                              4.86                     
LA GRANGE 2 NNE                       4.61                     
DAM 49 UNION                          4.15                     
LOUISVILLE/STANDIFO                   3.85                     
OWENSBORO/DAVIESS CO. APT             3.77                     
FORT KNOX AAF                         3.55                     
LEXINGTON/BLUE GRASS FIELD            3.17                     

...MISSOURI...
POTTERSVILLE 1 NNW                    8.01                     
CAPE GIRARDEAU MUNI ARPT              7.57                     
ELLSINORE 5 WNW                       7.54                     
ALLEY SPRINGS (RANGER STN)            7.23                     
ALTON 7 N                             6.63                     
POPLAR BLUFF MUNI ARPT                6.41                     
ZALMA 4 E                             6.21                     
WEST PLAINS MUNI ARPT                 5.83                     
SPRINGFIELD MUNI ARPT                 2.95                     
ST LOUIS/LAMBERT INTL ARPT            1.77                     

...OHIO...
CLEVES 3 NNW                          3.64                     
BETHEL 4 W                            3.22                     
CINCINNATI/LUNKIN FIELD               1.90                     

...OKLAHOMA...
MUSKOGEE/DAVIS FIELD AIRPORT          6.83                     
WALTERS 1 ENE                         6.12                     
WESTVILLE                             5.79                     
COOKIETOWN 6 NNW                      5.49                     
TULSA/LLOYD JONES                     4.03                     
BUNCH 1 N                             3.74                     
MCALESTER REGIONAL ARPT               3.19                     
TINKER AFB/OKLAHOMA CITY              2.05                     

...TEXAS...
ABILENE MUNI ARPT                     2.42                     

...WEST VIRGINIA...
HUNTINGTON/TRI-STATE ARPT             2.36                     


THE SURFACE BOUNDARY SITUATED OVER THE OHIO VALLEY AND INTO THE
SOUTHERN PLAINS WILL BEGIN TO SLOWLY LIFT NORTHWARD ON MONDAY.
WARM AND HUMID AIR FROM THE GULF OF MEXICO WILL BE SURGING
NORTHWARD...SUPPORTING THE CONTINUING DEVELOPMENT OF MODERATE TO
HEAVY RAINFALL ALONG THE BOUNDARY.  A SERIES OF SURFACE WAVES ARE
EXPECTED TO DEVELOP ALONG THE FRONT AND MOVE NORTHEASTWARD ACROSS
THE LOWER/MIDDLE MISSISSIPPI AND OHIO VALLEYS ON TUESDAY AND
WEDNESDAY.  THIS WILL ENHANCE PRECIPITATION ALONG THE FRONT AND
HELP TRIGGER POTENTIALLY SEVERE THUNDERSTORMS.  BY THURSDAY
MORNING...ADDITIONAL RAINFALL TOTALS OF 3 TO 6 INCHES ARE EXPECTED
ACROSS MUCH OF THE LOWER/MIDDLE MISSISSIPPI...OHIO...AND TENNESSEE
RIVER VALLEYS...WITH HIGHER AMOUNTS...APPROACHING 8
INCHES...LIKELY OVER EASTERN ARKANSAS AND WESTERN TENNESSEE. 
GIVEN THE ALREADY SATURATED GROUND AND SWOLLEN RIVERS...ANY
ADDITIONAL RAIN WILL ONLY EXACERBATE ONGOING FLOODING ISSUES.

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

GERHARDT