Information on Isaac, from the Hydrometeorological Prediction Center

TROPICAL DEPRESSION ISAAC ADVISORY NUMBER 42
NWS HYDROMETEOROLOGICAL PREDICTION CENTER COLLEGE PARK MD

DISCUSSION AND 48-HOUR OUTLOOK
——————————
AT 1000 AM CDT…1500 UTC…THE CENTER OF ISAAC WAS LOCATED NEAR
LATITUDE 35.6 NORTH…AND LONGITUDE 94.1 WEST. THE SYSTEM IS
EXPECTED TO CONTINUE MOVING NORTHWARD INTO THE MIDDLE MISSISSIPPI
RIVER VALLEY TODAY BEFORE TURNING NORTHEASTWARD INTO THE OHIO
RIVER VALLEY ON SATURDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 25 MPH…40 KM/H…WITH HIGHER
GUSTS.

MINIMUM CENTRAL PRESSURE IS 1003 MB…29.62 INCHES.

HAZARDS
——-
RAINFALL…AN ADDITIONAL 3 TO 5 INCHES OF RAIN…WITH LOCALIZED
AMOUNTS AS HIGH AS 8 INCHES…WILL BE POSSIBLE FOR MUCH OF THE
MIDDLE MISSISSIPPI RIVER VALLEY THROUGH LATE SATURDAY. THESE HEAVY
RAINFALL AMOUNTS WILL SPREAD INTO THE OHIO RIVER VALLEY ON SUNDAY.
BY SUNDAY NIGHT INTO MONDAY AND TUESDAY…HEAVY RAINS WILL REACH
THE CENTRAL APPALACHIANS. WHILE THE ONGOING DROUGHT WILL TEND TO
KEEP THE THREAT FOR FLASH FLOODING DOWN INITIALLY…VERY HEAVY
RAINFALL OVER THE SAME AREAS WILL LEAD TO AN INCREASING FLASH
FLOOD THREAT OVER TIME.

RAINFALL TOTALS
—————
SELECTED STORM TOTAL RAINFALL IN INCHES THROUGH 7 AM CDT

…ALABAMA…
WILMER 7.9 SE                       11.96                    
GRAND BAY 0.6 NW                    11.07                    
MOBILE/BATES FIELD                   9.67                    
FAIRHOPE 2.3 N                       6.42                    
DAPHNE 1.8 ESE                       5.87                    
THEODORE 8.0 SSE                     5.12                    
POINT CLEAR 1.6 SSW                  5.04                    
SILVERHILL 0.9 SSE                   4.34                    
FOLEY 2.0 SSW                        3.71                    

…ARKANSAS…
MONTICELLO 1.6 WNW                   5.09                    
WHITE HALL 4.1 NNW                   5.08                    
HAMPTON 6.8 SE                       4.12                    
BRYANT 1.3 NW                        4.03                    
LITTLE ROCK 2.2 N                    3.13                    
PINE BLUFF/GRIDER FIELD              2.63                    
EL DORADO/GOODWIN FIELD              1.71                    

…FLORIDA…
VERO BEACH 5.2 S                    16.60                    
ROYAL PALM BEACH 5.0 W              16.29                    
BOYNTON BEACH 1.9 NNW               14.41                    
PORT ST LUCIE 1.5 NE                13.04                    
ABERDEEN 4.2 NNW                    12.41                    
PALM CITY 4.0 SW                    11.69                    
HOMESTEAD AFB                        9.37                    
FORT PIERCE/ST LUCIE                 9.18                    
WEST PALM BEACH INTL ARPT            8.64                    
VERO BEACH MUNI ARPT                 7.66                    
FORT LAUDERDALE EXECUTIVE APT        7.02                    
MIAMI/OPA LOCKA                      6.64                    
POMPANO BEACH AIRPARK                5.33                    
WINTER HAVEN GILBERT ARPT            5.19                    
HOLLYWOOD/NORTH PERRY ARPT           5.12                    

…GEORGIA…
GUYTON 1.9 S                         5.60                    
BROOKLET 13.1 SE                     4.60                    
RINCON 1.2 NNW                       4.03                    
MONROE 5.6 NNE                       3.11                    
JESUP 7.1 N                          3.04                    
AUGUSTA/BUSH FIELD                   2.53                    
ALMA/BACON CO. ARPT                  2.49                    
SAVANNAH MUNI ARPT                   2.47                    
FORT STEWART/WRIGHT AAF              2.06                    
AUGUSTA/DANIEL FIELD                 1.95                    
MOODY AFB/VALDOSTA                   1.50                    

…LOUISIANA…
NEW ORLEANS                         20.08                    
RESERVE 0.5 SSE                     13.46                    
LIVINGSTON                          13.16                    
ABITA SPRINGS 1.9 NE                12.36                    
HAMMOND 2.3 WSW                     11.93                    
TERRYTOWN 3.3 S                     10.56                    
SLIDELL                             10.40                    
BATON ROUGE/RYAN MUNI ARPT           4.57                    
BOOTHVILLE                           4.20                    
MONROE RGNL ARPT                     2.37                    
PATTERSON MEMORIAL ARPT              2.00                    
LAFAYETTE RGNL ARPT                  1.55                    
ALEXANDRIA/ESLER                     1.50                    

…MISSOURI…
WEST PLAINS 1 W                      2.08                    

…MISSISSIPPI…
KILN 3.3 N                          17.04                    
MARION RAWS/COLUMBIA                15.02                    
SAUCIER 1.7 NNE                     12.78                    
PICAYUNE 5.6 ENE                    12.17                    
DIAMONDHEAD 1.5 NE                  12.04                    
LONG BEACH 0.7 S                    11.95                    
MCCOMB/LEWIS FIELD                  10.93                    
GULFPORT-BILOXI                     10.85                    
PASCAGOULA                          10.67                    
KEESLER AFB/BILOXI                  10.17                    
HATTIESBURG/CHAIN MUNI ARPT          9.44                    
HATTIESBURG/LAUREL                   7.93                    
JACKSON/HAWKINS FIELD                4.03                    
MERIDIAN/KEY FIELD                   4.00                    
JACKSON WFO                          3.93                    
MERIDIAN NAS/MCCAIN                  1.72                    

…NORTH CAROLINA…
WILMINGTON/NEW HANOVER CO. ARPT      4.07                    
JACKSONVILLE/ELLIS AIRPORT           1.50                    

…SOUTH CAROLINA…
MOUNT PLEASANT 5.5 NNE               9.08                    
PAWLEYS ISLAND 5.6 NNE               8.36                    
CHARLESTON 2.8 NE                    7.36                    
JOHNS ISLAND 9.0 SE                  6.44                    
MEGGETT 1.8 W                        4.85                    
BEAUFORT MCAS                        3.59                    
ROCK HILL-YORK CO. ARPT              2.89                    
DARLINGTON                           1.75

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