... Flood Watch remains in effect through Monday morning...
The Flood Watch continues for
* northern Connecticut... Rhode Island... Massachusetts east of the
Berkshires and southwest New Hampshire.
* Through Monday morning
* even though the heaviest rain fell last night... occasionally heavy
rain today into Monday will continue to send runoff into rivers and
streams. Rainfall totals of 3 to 6 inches are expected by Monday
morning.
* In addition to significant urban and poor drainage flooding... small
streams may rise out of their banks today. Some larger rivers...
which normally take longer to respond to heavy rain... may rise out
of their banks late today or tonight. Some of the more vulnerable
locations include rivers in the Merrimack basin of northeast
Massachusetts... as well as the Blackstone... Charles and Neponset
basins.
Precautionary/preparedness actions...
A Flood Watch means there is a potential for flooding based on
current forecasts.
You should monitor later forecasts and be alert for possible
flood warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.
514 am EDT sun Mar 14 2010
... Coastal Flood Warning remains in effect from 10 am this
morning to 3 PM EDT this afternoon...
... Coastal Flood Watch remains in effect from this evening
through late tonight...
A coastal Flood Warning remains in effect from 10 am this morning
to 3 PM EDT this afternoon. A coastal Flood Watch remains in effect
from this evening through late tonight. This watch may need to extend
to the midday Monday high tide cycle in our daytime issuance.
A powerful noreaster will bring widespread minor coastal flooding
along with pockets of moderate coastal flooding during todays late
morning and early afternoon high tide cycle. This will result in
vulnerable Road closures an hour on either side of high tide.
Despite low astronomical tides... a storm surge of nearly 2.5 feet is
expected for todays and possibly mondays high tide cycles. This combined
with waves of 20 to 25 feet pounding the eastern Massachusetts coast
may result in pockets of moderate flooding.
The North Shore of Boston from Boston Winthrop and Revere northward
to Plum Island and Newburyport will have the complicating factor of
nearly constant onshore gale force northeast gusts limiting river
and stream drain into the ocean. This could force heavy urban rainfall
runoff to possibly back up onto a few city streets.
Another round of widespread minor along with pockets of moderate
coastal flooding is expected during the high tide cycle late Sunday
night. Additional minor to moderate coastal flooding will also likely
occur during the two high tide cycles on Monday so more headlines may
be issued later today.
Pockets of substantial beach erosion are expected to occur through
Monday.
Finally... there is a very low probability of major coastal flooding
at Scituate during the midday Monday high tide. This will be
reevaluated later today.
Precautionary/preparedness actions...
A coastal Flood Watch means that the potential exists for
moderate or major coastal flooding. Moderate coastal flooding
produces widespread flooding of vulnerable shore roads and/or
basements due to the height of storm tide and/or wave action.
Numerous Road closures are needed. Lives may be at risk for
people who put themselves in harms way. Isolated structural
damage may be observed.
Major coastal flooding is considered severe enough to cause at
least scattered structural damage along with widespread flooding
of vulnerable shore roads and/or basements. Some vulnerable
homes will be severely damaged or destroyed. Numerous roads are
impassable... some with washouts severe enough to be life
threatening if one attempted to cross on foot or by vehicle. Some
neighborhoods will be isolated. Evacuation of some neighborhoods
is necessary.
All tide heights are relative to mean lower low water.
Time of high total tides are approximate to the nearest hour.
Scituate
total astro
tide day/time tide surge waves flood
/ft/ /ft/ /ft/ /ft/ category
------- ---------- ------- ------- ------- ----------
11.3 14/11 am 9.1 2.2 13-16 moderate
11.3 15/12 am 8.9 2.4 12-14 minor
12.1 15/12 PM 9.3 2.8 22 major
10.8 16/12 am 9.1 1.7 14-16 minor
10.3 16/01 PM 9.2 1.1 8-10 none
9.4 17/01 am 9.4 0.0 7-8 none
Boston Harbor
total astro
tide day/time tide surge waves flood
/ft/ /ft/ /ft/ /ft/ category
------- ---------- ------- ------- ------- ----------
12.0 14/11 am 9.6 2.4 4-5 moderate
11.9 15/12 am 9.4 2.5 4 minor
12.7 15/12 PM 9.8 2.9 3 minor
11.4 16/12 am 9.6 1.8 3 none
10.9 16/01 PM 9.7 1.2 1-2 none
9.9 17/01 am 9.9 0.0 1 none
Newburyport
total astro
tide day/time tide surge waves flood
/ft/ /ft/ /ft/ /ft/ category
------- ---------- ------- ------- ------- ----------
10.2 14/12 PM 8.0 2.2 16-17 none
10.1 15/12 am 7.8 2.3 13-14 none
10.6 15/12 PM 8.0 2.6 18-19 moderate
9.5 16/01 am 7.9 1.6 12-13 none
9.1 16/01 PM 8.0 1.1 8-9 none
8.3 17/01 am 8.1 0.2 7-8 none
Gloucester Harbor
total astro
tide day/time tide surge waves flood
/ft/ /ft/ /ft/ /ft/ category
------- ---------- ------- ------- ------- ----------
10.9 14/11 am 8.8 2.1 17-20 moderate
10.9 15/12 am 8.6 2.3 16-17 moderate
11.6 15/12 PM 9.0 2.6 20-22 moderate
10.5 16/12 am 8.9 1.6 16 minor
10.0 16/12 PM 8.8 1.2 12-14 none
9.1 17/01 am 9.1 0.0 8-9 none
Revere
total astro
tide day/time tide surge waves flood
/ft/ /ft/ /ft/ /ft/ category
------- ---------- ------- ------- ------- ----------
11.6 14/11 am 9.2 2.4 11-13 minor
11.4 15/12 am 8.9 2.5 11-12 minor
12.2 15/12 PM 9.3 2.9 14-16 moderate
11.0 16/12 am 9.2 1.8 10-11 none
10.5 16/01 PM 9.3 1.2 8-9 none
9.4 17/01 am 9.4 0.0 7-8 none
