000
AGUS71 KRHA 211401
HMDRHA
HYDROMETEOROLOGICAL DISCUSSION
MIDDLE ATLANTIC RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1001 AM EDT TUE MAY 21 2013
SCATTERED SHOWERS AND THUNDERSTORMS FELL MONDAY MAINLY ACROSS PORTIONS
OF VIRGINIA AND WEST VIRGINIA. MOST OBSERVED RAINFALL AMOUNTS WERE
LESS THAN THREE QUARTERS OF AN INCH.
Value County St Location
1.70 Augusta VA Stuarts Draft F/P Pr
0.82 Augusta VA Craigsville 2s
0.69 Pocahontas WV Bartow
0.65 Botetourt VA Troutville 4.3WNW CO
0.60 Nelson VA Montebello Fish Nurs
0.56 Botetourt VA Glade Creek IFLOWS
0.47 Sussex VA Wakefield ASOS
0.41 Roanoke VA Roanoke AP
0.40 Craig VA Paint Bank 3E IFLOWS
0.36 Botetourt VA Carvin Creek IFLOWS
0.36 James City VA Williamsburg VA 3.2W
0.35 Shenandoah VA Edinburg
0.35 Hardy WV Lost River
0.32 Accomack VA Chincoteague
0.31 Alleghany VA Lake Moomaw
HIGH PRESSURE CENTERED OFF THE CAROLINA COAST WILL PROVIDE A
SOUTHWESTERLY FLOW OF VERY WARM AND HUMID AIR THROUGH THURSDAY. A
BACKDOOR COLD FRONT ACROSS NEW YORK STATE WILL DROP SOUTH BRINGING THE
BEST CHANCE OF SHOWERS AND THUNDERSTORMS TODAY TO THE UPPER
SUSQUEHANNA AND UPPER DELAWARE BASINS. RAINFALL AMOUNTS OF ONE QUARTER
TO ONE HALF INCH ARE EXPECTED ACROSS THE NORTHERN BASINS THROUGH
TONIGHT.
AS THE UPPER TROUGH APPROACHES FROM THE WEST LATE WEDNESDAY, SHOWERS
AND THUNDERSTORMS WILL BECOME MORE NUMEROUS ACROSS THE WESTERN
BASINS. RAINFALL AMOUNTS FOR WEDNESDAY ARE EXPECTED TO BE ONE QUARTER
TO ONE HALF INCH.
THE UPPER LOW AND ASSOCIATED COLD FRONT WILL MOVE INTO THE BASINS
THURSDAY AND CONTINUE TOWARDS THE COAST THURSDAY NIGHT. HIGHEST
RAINFALL AMOUNTS OF ONE HALF TO ONE INCH ARE EXPECTED ACROSS EASTERN
PENNSYLVANIA, SOUTHEAST NEW YORK AND NEW JERSEY. POINT AMOUNTS IN
EXCESS OF TWO INCHES ARE POSSIBLE.
DRIER COOLER AIR WILL ARRIVE FRIDAY IN TIME FOR THE HOLIDAY WEEKEND.
ON AREA RIVERS AND CREEKS, GENERALLY MINOR CHANGES ARE EXPECTED
THROUGH WEDNESDAY. MINOR RISES ARE EXPECTED AT MANY LOCATIONS THURSDAY
AND FRIDAY THROUGHOUT THE MID-ATLANTIC REGION. LOCALLY SHARP RISES ARE
POSSIBLE ON SMALLER CREEKS AND STREAMS IN THE VICINITY OF STRONGER
THUNDERSTORMS.
ALL DAILY HYDRO FORECASTS HAVE BEEN ISSUED.
TJR
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000
AGUS71 KRHA 201337
HMDRHA
HYDROMETEOROLOGICAL DISCUSSION
MIDDLE ATLANTIC RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE STATE COLLEGE PA
936 AM EDT MON MAY 20 2013
SCATTERED SHOWERS WERE MOST NUMEROUS ACROSS THE SOUTHERN AND EASTERN
BASINS SUNDAY WITH MOST OBSERVED RAINFALL AMOUNTS LESS THAN THREE
QUARTERS OF AN INCH.
Value County St Location
1.15 Appomattox VA Appomattox
0.90 Orange VA Orange F/P
0.84 Botetourt VA Apple Orchard Mt IFL
0.77 Campbell VA Lynchburg AP
0.67 Pittsylvania VA Danville
0.64 Botetourt VA Buchanan
0.63 Monmouth NJ Manasquan
0.60 Morris NJ Boonton F&P
0.60 Botetourt VA Lithia IFLOWS
0.60 Essex NJ Maplewood USGS
0.57 Passaic NJ Pompton Lakes Above
0.57 James City VA Williamsburg 4.1WNW
0.56 Botetourt VA Glade Creek IFLOWS
0.54 independent city VA Poquoson 5.8W COCO
0.53 Morris NJ Boonton Twp 1.6SSE C
AN UPPER LOW OVER THE CAROLINAS WILL PROVIDE SCATTERED SHOWERS AND
THUNDERSTORMS TO THE VIRGINIA BASINS TODAY. HIGHEST RAINFALL AMOUNTS
OF ONE QUARTER TO ONE HALF INCH ARE EXPECTED THROUGH TONIGHT IN
EASTERN VIRGINIA. POINT AMOUNTS COULD EXCEED ONE INCH. A COLD FRONT
DROPPING SOUTH THROUGH NEW ENGLAND MAY BRING SOME LATE DAY SHOWERS TO
THE UPPER SUSQUEHANNA BASIN. ANY AMOUNTS WILL BE LIGHT.
FOR TUESDAY, LINGERING SHOWERS ARE POSSIBLE IN SOUTHEAST VIRGINIA WITH
AMOUNTS LESS THAN ONE QUARTER INCH. SHOWERS AND SCATTERED
THUNDERSTORMS WILL AFFECT THE UPPER SUSQUEHANNA AND UPPER DELAWARE
BASINS WITH RAINFALL AMOUNTS UP TO THREE QUARTERS OF AN INCH
EXPECTED.
SHOWERS AND THUNDERSTORMS WILL BECOME MORE NUMEROUS WEDNESDAY AS A
COLD FRONT APPROACHES FROM THE WEST LATE. WIDESPREAD AMOUNTS OF ONE
QUARTER TO ONE HALF ARE EXPECTED.
ON AREA RIVERS AND CREEKS, MOSTLY MINOR CHANGES ARE EXPECTED THROUGH
WEDNESDAY. SOME RISES ARE EXPECTED ON SMALLER RIVERS AND CREEKS DUE TO
SHOWERS. LOCALLY SHARP RISES ARE POSSIBLE ON A FEW SMALLER CREEKS AND
TRIBUTARIES IN THE VICINITY OF STRONGER SHOWERS AND THUNDERSTORMS.
ALL DAILY HYDRO FORECASTS WILL BE AVAILABLE SHORTLY.
TJR
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000
AGUS71 KRHA 191418
HMDRHA
HYDROMETEOROLOGICAL DISCUSSION
MIDDLE ATLANTIC RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1018 AM EDT SUN MAY 19 2013
NUMEROUS SHOWERS AND THUNDERSTORMS FELL ACROSS OUR EASTERN AND
SOUTHERN BASINS DURING THE PAST 24 HOURS. THE HIGHEST AMOUNTS
FROM 12Z SATURDAY TO 12Z SUNDAY:
Value County St Location
1.83 Worcester MD Ocean City
1.58 CITY OF PETERSBURG VA Petersburg
1.23 Northampton VA Cape Charles 5ENE CR
1.13 Montgomery VA Blacksburg 0.4N COCO
1.12 Wicomico MD Powellville 3WNW DCP
1.04 Sussex DE Selbyville
1.01 James City VA Newport News 1.7SE C
0.96 Craig VA Simmonsville IFLOWS
0.93 Worcester MD Assateague
0.89 Wicomico MD Salisbury AP
0.87 Sussex DE Bethany Beach DEOS
0.86 Prince George VA Prince George 3NE
0.73 Sussex DE Bethany Beach Boardw
0.70 Bath VA Hot Springs 4ESE RAW
0.70 Cape May NJ Middle Twp 4.4SW COC
A WEAK FRONT OVER NORTH CAROLINA THIS MORNING IS EXPECTED TO LIFT
NORTH TODAY INTO MONDAY. A PROLONGED STRETCH OF UNSETTLED WEATHER
IS IN STORE OVER THE NEXT SEVERAL DAYS AS A STORM SYSTEM CURRENTLY
OVER THE CENTRAL PLAINS MOVES SLOWLY EASTWARD.
DAY ONE QPF IS A TENTH OR LESS IN NORTHERN BASINS INCREASING TO HALF
AN INCH IN THE JAMES BASIN. DAY TWO IS A TENTH OR LESS IN WESTERN
BASINS WITH UP TO A THIRD IN THE LOWER JAMES BASIN. DAY THREE IS TWO
TENTH OR LESS IN SOUTHERN BASINS WITH TWO TO SIX TENTHS ACROSS THE
NORTHERN BASINS.
MINOR RISES ARE FORECAST FOR THE JAMES BASINS OVER THE NEXT FEW DAYS.
NNNN
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