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CanisLupusArctos · 04-28-2008, 09:22 PM

An inch of rain has fallen at Black Cat Weather Station from this storm. Radar indicates several areas of heavy rain (yellow) forming over New York State, Connecticut, and Rhode Island. This activity is moving toward NH and Maine. Moderate rain will continue until the heavy stuff gets here late tonight.

As in wintertime, a secondary low pressure area is expected to develop off the mid-Atlantic coast and create (wet) Nor'easter conditions on Tuesday. The energy associated with this system may be sufficient for thunderstorms to spring up within the greater storm. If these form, they could drop an inch of rain on specific towns in an hour's time. This rain would be in addition to whatever the surrounding area gets from the general rainfall.

The National Weather Service in Gray Maine said in their latest forecast discussion that flood warnings could be issued as early as 11 pm. These would likely be for smaller rivers or streams over-full. On Tuesday any thunderstorms embedded within the greater storm may result in localized flash flooding, when water levels on roads or near homes rise to several inches (or feet) deep within minutes due to an all-out downpour. If this happens, the NWS issues a flash flood warning for the specific area where it's occurring.

Localized flooding may also occur in areas where the recently-melted colossal snowbanks have left heaps of dirt and debris on or near storm drains. Washouts may occur where localized flooding flows across roads already chewed up by the hard winter.

The following is the latest public update (not the forecast discussion) from the NWS.

FLOOD WATCH
NATIONAL WEATHER SERVICE GRAY ME
843 PM EDT MON APR 28 2008

...A HEAVY SOAKING RAIN WILL CONTINUE THROUGH TUESDAY...

.LOW PRESSURE OVER NORTHERN NEW JERSEY THIS EVENING WILL
TRACK NORTHEAST...CROSSING NORTHERN ENGLAND TUESDAY AFTERNOON
AND EVENING. AHEAD OF THE LOW...A DEVELOPING SOUTHEAST FLOW WILL
BRING AMPLE AMOUNTS OF MOISTURE IN FROM THE ATLANTIC...RESULTING
IN LOCALLY HEAVY RAINFALL.

RAIN HAD OVERSPREAD THE ENTIRE REGION BY THE EVENING HOURS...AND
THE RAIN WILL CONTINUE OVERNIGHT INTO TUESDAY. THE RAIN WILL FALL
HEAVILY AT TIMES...ESPECIALLY LATER TONIGHT AND TUESDAY MORNING.
SINCE RIVERS ARE STILL RUNNING HIGH FROM THE RAPID SNOWMELT OVER
THE PAST TEN DAYS...THE EXPECTED 2 TO 4 INCHES OF RAIN MAY RESULT
IN RIVERS RISING TO BANKFUL OR HIGHER LATER TONIGHT THROUGH
WEDNESDAY MORNING.

04-28-2008, 09:22 PM	#30
CanisLupusArctos Senior Member Join Date: Jan 2007 Location: Center Harbor Posts: 1,049 Thanks: 15 Thanked 472 Times in 107 Posts	An inch of rain has fallen An inch of rain has fallen at Black Cat Weather Station from this storm. Radar indicates several areas of heavy rain (yellow) forming over New York State, Connecticut, and Rhode Island. This activity is moving toward NH and Maine. Moderate rain will continue until the heavy stuff gets here late tonight. As in wintertime, a secondary low pressure area is expected to develop off the mid-Atlantic coast and create (wet) Nor'easter conditions on Tuesday. The energy associated with this system may be sufficient for thunderstorms to spring up within the greater storm. If these form, they could drop an inch of rain on specific towns in an hour's time. This rain would be in addition to whatever the surrounding area gets from the general rainfall. The National Weather Service in Gray Maine said in their latest forecast discussion that flood warnings could be issued as early as 11 pm. These would likely be for smaller rivers or streams over-full. On Tuesday any thunderstorms embedded within the greater storm may result in localized flash flooding, when water levels on roads or near homes rise to several inches (or feet) deep within minutes due to an all-out downpour. If this happens, the NWS issues a flash flood warning for the specific area where it's occurring. Localized flooding may also occur in areas where the recently-melted colossal snowbanks have left heaps of dirt and debris on or near storm drains. Washouts may occur where localized flooding flows across roads already chewed up by the hard winter. The following is the latest public update (not the forecast discussion) from the NWS. FLOOD WATCH NATIONAL WEATHER SERVICE GRAY ME 843 PM EDT MON APR 28 2008 ...A HEAVY SOAKING RAIN WILL CONTINUE THROUGH TUESDAY... .LOW PRESSURE OVER NORTHERN NEW JERSEY THIS EVENING WILL TRACK NORTHEAST...CROSSING NORTHERN ENGLAND TUESDAY AFTERNOON AND EVENING. AHEAD OF THE LOW...A DEVELOPING SOUTHEAST FLOW WILL BRING AMPLE AMOUNTS OF MOISTURE IN FROM THE ATLANTIC...RESULTING IN LOCALLY HEAVY RAINFALL. RAIN HAD OVERSPREAD THE ENTIRE REGION BY THE EVENING HOURS...AND THE RAIN WILL CONTINUE OVERNIGHT INTO TUESDAY. THE RAIN WILL FALL HEAVILY AT TIMES...ESPECIALLY LATER TONIGHT AND TUESDAY MORNING. SINCE RIVERS ARE STILL RUNNING HIGH FROM THE RAPID SNOWMELT OVER THE PAST TEN DAYS...THE EXPECTED 2 TO 4 INCHES OF RAIN MAY RESULT IN RIVERS RISING TO BANKFUL OR HIGHER LATER TONIGHT THROUGH WEDNESDAY MORNING.