TROPICAL DEPRESSION ISAAC ADVISORY NUMBER 43
NWS HYDROMETEOROLOGICAL PREDICTION CENTER COLLEGE PARK MD AL092012
400 PM CDT FRI AUG 31 2012
...TROPICAL DEPRESSION ISAAC BRINGING HEAVY RAINFALL AND THE
THREAT OF FLASH FLOODING TO THE MIDDLE MISSISSIPPI RIVER VALLEY...
SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
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LOCATION...37.3N 93.8W
ABOUT 40 MILES...65 KM...E OF JOPLIN REGIONAL MISSOURI.
ABOUT 145 MILES...235 KM...SSE OF KANSAS CITY MISSOURI.
MAXIMUM SUSTAINED WINDS...25 MPH...40 KM/H
PRESENT MOVEMENT...NNE OR 32 DEGREES AT 15 MPH...24 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES
WATCHES AND WARNINGS
--------------------
A TORNADO WATCH IS IN EFFECT FOR PORTIONS OF NORTHEASTERN
ARKANSAS...EASTERN MISSOURI...SOUTHWESTERN ILLINOIS...AND EXTREME
WESTERN KENTUCKY AND TENNESSEE.
FLOOD AND FLASH FLOOD WATCHES AND WARNINGS ARE IN EFFECT FOR THE
AREAS OF ARKANSAS...SOUTHERN MISSISSIPPI...AND SOUTHEASTERN
LOUISIANA.
COASTAL FLOOD WARNINGS ARE IN EFFECT FOR PORTIONS OF THE LOUISIANA
AND MISSISSIPPI COASTLINES.
FOR INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE WATCHES
AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE AT WWW.WEATHER.GOV.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 400 PM CDT...2100 UTC...THE CENTER OF ISAAC WAS LOCATED NEAR
LATITUDE 37.3 NORTH...AND LONGITUDE 93.8 WEST. THE SYSTEM IS
EXPECTED TO CONTINUE MOVING NORTHWARD INTO THE MIDDLE MISSISSIPPI
RIVER VALLEY TONIGHT AND SATURDAY BEFORE TURNING NORTHEASTWARD
INTO THE OHIO RIVER VALLEY BY SATURDAY NIGHT.
MAXIMUM SUSTAINED WINDS ARE NEAR 25 MPH...40 KM/H...WITH HIGHER
GUSTS.
MINIMUM CENTRAL PRESSURE IS 1004 MB...29.65 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 1 PM CDT
...ALABAMA...
DEES 3 N 14.53
WILMER 7.9 SE 11.96
GRAND BAY 0.6 NW 11.07
MOBILE/BATES FIELD 9.85
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...
PINE BLUFF 8.50
KINGSLAND 6.95
FORDYCE 6.10
STAR CITY 5.39
EGYPT 5.25
STEPROCK 5.15
MONTICELLO 1.6 WNW 5.09
WHITE HALL 4.1 NNW 5.08
ARKANSAS CITY 5.00
MONTICELLO 4.38
STUTTGART MUNI ARPT 4.08
SEARCY MUNI ARPT 3.52
EL DORADO/GOODWIN FIELD 3.24
LITTLE ROCK 2.2 N 3.13
...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
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
ALEXANDRIA/ESLER 7.00
BATON ROUGE/RYAN MUNI ARPT 5.02
BOOTHVILLE 4.20
MONROE RGNL ARPT 2.47
PATTERSON MEMORIAL ARPT 2.02
LAFAYETTE RGNL ARPT 1.55
...MISSOURI...
WEST PLAINS 2.29
AVA 0.8 NNW 1.92
COLUMBIA RGNL ARPT 1.76
JOPLIN RGNL ARPT 1.61
...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 11.02
GULFPORT-BILOXI 10.85
PASCAGOULA 10.73
KEESLER AFB/BILOXI 10.17
HATTIESBURG/CHAIN MUNI ARPT 9.44
JACKSON 4.76
GREENVILLE 4.39
MERIDIAN/KEY FIELD 4.00
...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
NEXT ADVISORY
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NEXT ADVISORY ISSUED AT 1000 PM CDT. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR FURTHER INFORMATION ON THIS
STORM.
FORECASTER RYAN
FORECAST POSITIONS
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INITIAL 31/2100Z 37.3N 93.8W
12HR VT 01/0600Z 38.3N 93.6W
24HR VT 01/1800Z 38.9N 92.5W...
36HR VT 02/0600Z 39.4N 91.1W...
48HR VT 02/1800Z 39.7N 89.6W...POST-TROP/EXTRATROP
72HR VT 03/1800Z 39.8N 87.3W...POST-TROP/EXTRATROP
96HR VT 04/1800Z 41.0N 82.5W...POST-TROP/EXTRATROP
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