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Heavy rain 5 - 9 September OBS


NortheastPAWx

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I have been watching the hydro grids all day and each update has gone up some.. If you read the discussions, they talk about even raising the crests more depending on exact track and rainfall amts (of course).. does look to be a widespread very serious flooding situation developing.

I wonder how high Wilkes Barre will get to.

24hr total since 1600 on 9/5/11 = 2.00"

6" even from Sunday night until this hour.

Susquehanna at HBG now upped to 20.5 on Friday even (17'FS)

That's up 2" since this mornings forecast.

http://water.weather.gov/ahps2/hydrograph.php?wfo=ctp&gage=harp1&view=1,1,1,1,1,1,1,1"

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I have been watching the hydro grids all day and each update has gone up some.. If you read the discussions, they talk about even raising the crests more depending on exact track and rainfall amts (of course).. does look to be a widespread very serious flooding situation developing.

I wonder how high Wilkes Barre will get to.

It's been a while since I saw a 2" increase in that short of time span. And looking at the graphs - the trend is continuing upward even at their last prog.

21' isolates my road from everywhere. 23' and my work shuts down )we're right along the river in N Hbg. Beyond that, we're in historical catagories. (nothing yet - looking like any Agnes redux) but both stems taking on this much ain't gonna end pretty.

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Uncle already. I love rain for my landscaping but this is getting ridiculous. Although somebody in the MA thread was throwing out correlation potential b/w rainy Aug/Sept periods and good AN winters.

Look at that firehouse down the Delmarva making a beeline for ILG, PHL, and probably SJ.

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WOW - State College update at 3:57

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...

MESO ANAL SHOWS THE CIRCULATION ASSOCIATED WITH LEE OVER EASTERN

TN...WITH A WARM FRONT FROM SRN VA THRU THE CHESAPEAKE BAY TO JUST

SOUTH OF ACY. SATELLITE SHOWS A DEEP PLUME OF TROPICAL MOISTURE

FROM THE BAY OF CAMPECHE ALL THE WAY INTO THE NERN US. REGIONAL

RADAR MOSAICS CONTINUE TO SHOW PRECIPITATION SURGING NORTHWARD

RIGHT INTO THE FCST AREA. LOCALLY THE RAIN IS STRATIFORM IN

NATURE...HOWEVER INSTABILITY ISN`T THAT FAR OFF TO THE SOUTH WITH

DEEP CONVECTION EVIDENT FROM CENTRAL VA SOUTHWARD.

WE CONTINUE TO SEE THE SET UP OF AN ALMOST CLASSIC TROPICAL

SYSTEM-FRONTAL BAND INTERACTION HEAVY RAIN SCENARIO AS THE

MOISTURE AND REMNANTS OF LEE MOVE NORTH INTO A VERY STRONG JET

ENTRANCE REGION THAT HAS SET UP AHEAD OF THE DEEP TROF THAT MOVED

INTO THE GR LAKES. SITUATION IS RIGHT OUT OF JUNKER`S HEAVY RAIN

MANUAL AND IS PRIMED TO YIELD LOCALLY HEAVY TO EXCESSIVE RAIN

AMOUNTS OVER THE NEXT COUPLE OF DAYS.[/size]

AS IS GENERALLY THE CASE AT THIS RANGE...EXACTLY WHERE THE

HEAVIEST AMOUNTS END UP FALLING IS STILL NOT KNOWN. SREF ENSEMBLE

FOR 48 HR AMOUNTS OF 4 OR MORE INCHES STILL CENTERS OVER CENTRAL

PA. GEFS TARGETS MORE OF MY NWRN ZONES. NEW NAM PAINTS THE BULLS-

EYE PRETTY MUCH RIGHT OVERHEAD STATE COLLEGE.

12Z NAM REALLY INTENSIFIES THE DEEP LAYER FRONTOGENETIC FORCING

LATER TODAY THROUGH THE OVERNIGHT SUPPORTING THE IDEA THAT THE

RAIN REALLY BEGINS TO RAMP UP IN INTENSITY THE DEEPER INTO TODAY

AND TONIGHT WE GET.

IT SHOULD BE NOTED THAT HISTORICALLY OUR MOST SIGNIFICANT HVY

RAIN EVENTS COME BY WAY OF TC/FRONTAL BOUNDARY INTERACTIONS. NEW

HPC DAY 1-2 GUIDANCE PAINTS A NEARLY 11 INCH BULLS-EYE OVER CENTRAL

PA! FOR THE NEAR AND SHORT TERM STUCK VERY CLOSE TO THEIR

NUMBERS WHICH GIVES MUCH OF THE AREA 2-6 INCHES OF RAIN TONIGHT

AND TOMORROW.

COMBO OF NNELY SFC WNDS...OVC SKIES AND PERSISTENT RNFL WILL KEEP

OVERNIGHT MINS FROM DROPPING OFF SIGNIFICANTLY WITH DIURNAL

RANGES BASICALLY 5 DEGREES OR LESS.

&&

.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH 6 PM WEDNESDAY/...

ELEVATED INSTABILITY...DEEP TROPICAL MOISTURE AND AN ANOMALOUSLY

STRONG SSE FLOW ALL POINTING TO THE POTENTIAL FOR LOCALLY HEAVY

RAINS TO CONTINUE AS THE SLOW MOVING STORM SYSTEM MAINTAINS ITS

CONTROL OVER THE REGION.

THE POTENTIAL ALREADY EXISTS FOR WIDESPREAD FLOODING. IF WE SEE

MORE THAN A FEW ISOLATED SMALL AREAS WITH AMOUNTS OVER 10

INCHES...WE WILL BE LOOKING AT AN HISTORIC EVENT.

AS FOR NOW...WILL MAINTAIN THE CURRENT WATCHES AND WARNINGS

.

http://forecast.weather.gov/product.php?site=NWS&issuedby=CTP&product=AFD&format=CI&version=1&glossary=1&highlight=off

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Uncle already. I love rain for my landscaping but this is getting ridiculous. Although somebody in the MA thread was throwing out correlation potential b/w rainy Aug/Sept periods and good AN winters.

Look at that firehouse down the Delmarva making a beeline for ILG, PHL, and probably SJ.

fwiw, we are still in a drought watch

drought.gif

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Is that total on rainfall at MQS right (3.88 since yesterday)? Looks like the highest among the Philly area "official" sites.

MQS rainfall observation sometimes looks like there is a reset problem or double or triple registering. Don't know if this is the case today, but would see if Paul's amount corroborates it.

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MQS rainfall observation sometimes looks like there is a reset problem or double or triple registering. Don't know if this is the case today, but would see if Paul's amount corroborates it.

It looks like it's legit per wunderground (no 2x or 3x counting or reset issues that I can see).

Reading is around 3 and Pottstown is now over 2. It wouldn't surprise me if they're close to 4 but I know how many issues that ob has had various things so I was a bit suspect at first.

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It looks like it's legit per wunderground (no 2x or 3x counting or reset issues that I can see).

Reading is around 3 and Pottstown is now over 2. It wouldn't surprise me if they're close to 4 but I know how many issues that ob has had various things so I was a bit suspect at first.

It almost looks like a 50% underestimation in the STP.

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