Tropical Storm Bonnie Forms, Makes Landfall, and Brings Heavy Rainfall During Memorial Day Weekend 2016

On May 28, 2016, the second Atlantic tropical cyclone of 2016 became Tropical Storm Bonnie in the Atlantic Ocean, and the system made landfall as a tropical depression on May 29, 8:30 a.m., on the South Carolina coast.  As of May 31, the storm had generated 7 to 10+ inches of rain to parts of coastal Georgia, South Carolina, and North Carolina, with 1 to 3+ inches having fallen by that time in parts of Virginia and several other Atlantic Coast states.  Below is an excerpt from the National Weather Service’s 11 a.m. EDT public advisory on Bonnie, including a list of estimated storm rainfall totals as of that time.  This public advisory and other information from the National Hurricane Center on Bonnie and the season’s other tropical systems are available online at http://www.nhc.noaa.gov/.  For more information on Bonnie’s Memorial Day weekend impacts, see The Weather Channel, “Tropical Storm Bonnie Recap: Flooding Rain Swamps Parts of South Carolina on Memorial Day Weekend 2016,” 5/30/16, online at https://weather.com/storms/hurricane/news/tropical-storm-depression-bonnie-atlantic-2016.

Bonnie

National Hurricane Center (NHC) forecast track for Bonnie as of 5/30/16, 5 a.m. EDT; accessed at http://www.nhc.noaa.gov/archive/2016/graphics/al02/loop_5W.shtml, 5/31/16, 11:45 a.m. EDT.

May 31, 2016, 11 a.m. Public Advisory Excerpt

POST-TROPICAL CYCLONE BONNIE ADVISORY NUMBER 16
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD AL022016
1100 AM EDT TUE MAY 31 2016

...CENTER OF POST-TROPICAL CYCLONE BONNIE MOVING BACK INTO THE
CAROLINA COASTAL WATERS...HEAVY RAIN THREAT EXPECTED TO CONTINUE
IN EASTERN NORTH CAROLINA...


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 1100 AM EDT...1500 UTC...THE CENTER OF BONNIE WAS LOCATED NEAR
LATITUDE 33.2 NORTH...AND LONGITUDE 77.8 WEST. THE CENTER OF
POST-TROPICAL CYCLONE BONNIE HAS DRIFTED BACK INTO THE COASTAL
WATERS SOUTH OF WILMINGTON...NORTH CAROLINA.  SATELLITE IMAGERY
INDICATES THAT SOME CONVECTION HAS REDEVELOPED AND HAS BEEN
PERSISTING IN THE SOUTHERN QUADRANT OF THE CIRCULATION. 
HOWEVER...TO THE NORTH OF THE CIRCULATION CENTER...ONLY SCATTERED
SHOWERS ARE PRESENT ACROSS THE COASTAL SECTION OF NORTH CAROLINA
WITH A SOME THUNDERSTORMS JUST OFF THE COAST.  THE REMNANT
CIRCULATION OF BONNIE IS EXPECTED TO CONTINUE MOVING VERY SLOWLY
EAST-NORTHEASTWARD NEAR THE NORTH CAROLINA COAST FOR THE NEXT
COUPLE OF DAYS BEFORE MOVING OFF INTO THE ATLANTIC LATER THIS
WEEK.  THE MAIN THREAT WITH THIS STORM WILL CONTINUE TO BE
MODERATE TO HEAVY RAIN OVER THE EASTERN PART OF NORTH CAROLINA FOR
THE NEXT COUPLE OF DAYS.

MAXIMUM SUSTAINED WINDS ARE NEAR 15 MPH...25 KM/H...WITH HIGHER
GUSTS.

MINIMUM CENTRAL PRESSURE IS 1011 MB...29.86 INCHES.

HAZARDS
-------
RAINFALL...POST-TROPICAL CYCLONE BONNIE IS EXPECTED TO PRODUCE
ADDITIONAL RAINFALL TOTALS OF 1 TO 2 INCHES WITH ISOLATED AMOUNTS
OF 3 INCHES POSSIBLE ACROSS NORTHEAST SOUTH CAROLINA...EASTERN
NORTH CAROLINA...AND FAR SOUTHEAST VIRGINIA THROUGH THURSDAY. 
THESE RAINS WILL CONTINUE TO ENHANCE THE THREAT FOR FLASH
FLOODING...PARTICULARLY IN REGIONS WHICH ARE ALREADY SATURATED
FROM PREVIOUS HEAVY RAINFALL.

RAINFALL TOTALS
---------------
SELECTED STORM TOTAL RAINFALL IN INCHES THROUGH 8 AM EDT [on May 31, 2016]

...DELAWARE...
WILMINGTON 2 NW                      2.23                     
GLASGOW                              2.01                     
NEW CASTLE                           1.94                     
TOWNSEND                             1.86                     
KITTS HUMMOCK                        1.82                     
PORT PENN                            1.64                     
WOODSIDE                             1.57                     
PRICES CORNER                        1.57                     
DOVER AFB                            1.50                     
GEORGETOWN/SUSSEX CO ARPT            1.43                     

...GEORGIA...
BURTONS FERRY LANDING                8.85                     
OLIVER 2 SW                          7.74                     
MARLOW                               7.46                     
NEWINGTON 1 S                        4.92                     
BLICHTON 1 ESE                       4.62                     
ROCKY FORD 1 SSW                     4.07                     
AUGUSTA/BUSH FIELD                   2.69                     
SAVANNAH MUNI ARPT                   1.57                     

...MASSACHUSETTS...
PLYMOUTH MUNI ARPT                   2.31                     
NEW BEDFORD MUNI ARPT                1.59                     
BOSTON/LOGAN                         1.13                     

...MARYLAND...
GALENA                               3.51                     
CARVILLE 3 W                         3.35                     
OCEAN CITY MUNI ARPT                 2.77                     
SALISBURY RGNL ARPT                  1.38                     
ANDREWS AFB/CAMP SPRINGS             1.20                     

...NORTH CAROLINA...
HATTERAS/BILLY MITCHELL AP           7.94                     
FAYETTEVILLE 1.6 WSW                 3.29                     
ERWIN/HARNETT COUNTY ARPT            2.50                     
RALEIGH/DURHAM INTL ARPT             2.45                     
LAURINBURG-MAXTON ARPT               2.07                     
FORT BRAGG/FAYETTEVILLE              1.47                     
CHAPEL HILL/WILLIAMS ARPT            1.26                     
WILMINGTON/NEW HANOVER CO ARPT       1.04                     

...NEW JERSEY...
HAMILTON TOWNSHIP                    4.52                     
EAST WINDSOR TWP                     3.91                     
WESTAMPTON TWP                       3.50                     
TRENTON 5 ESE                        3.16                     
SPRINGDALE 3 W                       3.14                     
MOUNT HOLLY WFO                      3.08                     
SEWELL                               2.93                     
TURNERSVILLE 2 S                     2.76                     
MATAWAN 1 WSW                        2.76                     
TOTTENVILLE 8 S                      2.52                     
ATLANTIC CITY INTL AIRPORT           1.81                     
NEWARK INTL ARPT                     1.60                     

...NEW YORK...
NEW YORK CITY                        1.65                     
NEW YORK/LA GUARDIA                  1.53                     

...PENNSYLVANIA...
JONAS                                3.49                     
POHOPOCO CREEK                       3.09                     
KRESGEVILLE                          3.08                     
PALMERTON 6 ENE                      3.00                     
WALNUTPORT                           2.70                     
DREXEL HILL                          2.51                     
PHILADELPHIA/NE PHIL. ARPT           2.35                     
PITTSBURGH/ALLEGHENY CO. ARPT        2.32                     
NORTHEAST PHILADELPHIA               2.30                     
PHILADELPHIA INTL ARPT               1.51                     

...RHODE ISLAND...
PROVIDENCE/PO WARWICK                1.50                     
WESTERLY STATE ARPT                  1.34                     

...SOUTH CAROLINA...
RIDGELAND 5.8 ESE                   10.43                     
OLD HOUSE 1 SSE                     10.36                     
VARNVILLE 6.7 SW                     9.03                     
LENA 4 ENE                           9.03                     
NORTH CHARLESTON 2.6 NW              8.61                     
ARCHDALE 2 NE                        8.61                     
BRUNSON 1.6 SSW                      6.45                     
FOLLY BEACH 2.5 SW                   6.44                     
FOLLY BEACH 2 WSW                    6.28                     
JOHNS ISLAND 4 SE                    6.24                     
ALLENDALE 1 S                        6.14                     
HENDERSONVILLE 6.11                  6.11                     
CALAWASSIE ISLAND                    6.05                     
CHARLESTON AIRPORT                   4.98                     
BEAUFORT 2 N                         4.60                     

...VIRGINIA...
WAKEFIELD MUNI ARPT                  2.56                     
RICHMOND                             2.35                     
WALLOPS ISLAND                       2.02                     
NORFOLK NAS                          1.87                     
TINKER CREEK                         1.39                     
LANGLEY AFB/HAMPTON                  1.24                     
PETERSBURG                           1.21                     
BUCHANAN 1 WNW                       1.02                     

 

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