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Severe Weather

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Massachusetts, Nantucket

High Surf Advisory, Coastal Flood Statement

Statement as of 4:14 AM EDT on June 24, 2017

Expires 1:00 AM EDT on June 25, 2017


... High surf advisory in effect until 8 PM EDT this evening...

... Splashover on the most vulnerable shoreline roads between 10 PM and 1 am
tonight...

* location... Nantucket

* timing... high surf today. Tidal impacts around the time of high tide near
midnight.

* Surf and rip current risk... seas up to 7 feet just offshore will result in
high surf and an increased risk for dangerous rip currents.

* Tidal departure... less than one half foot.

* Coastal flood impacts... very minor inundation of the typical most vulnerable
shoreline roads.

Precautionary/preparedness actions...

A rip current... sometimes mistakenly called an undertow... is a strong but
narrow current of water flowing from the beach to the surf zone. It can rapidly
carry a swimmer into deeper water... and exhaust an individual trying to swim
against it.

If you are a poor swimmer and are caught in a rip current... swim parallel to
the beach until out of its pull... then swim back to shore. Another means of
escape for good swimmers is to ride the current out until it dissipates... then
swim back to shore outside of the rip current.

Do not attempt to swim directly into the rip current... it can exhaust and drown
even the strongest swimmer.

Heed the advice of the beach patrol and swim only at guarded beaches. Be
especially cautious near piers and jetties... where rip currents can be
enhanced.

In addition... viewers of large surf should stay in safe areas well away from
possible splashover. Individual waves may be more than twice the average wave
height... which can sweep a person into the water from what may seem to be a
safe viewing area. Falling into turbulent and sometimes Rocky Waters can result
in injury that reduces the chance of survival.



Time of high total tides are approximate to the nearest hour.

Nantucket Harbor
MLLW categories - minor 5.0 ft, moderate 6.5 ft, major 8.0 ft
mhhw categories - minor 1.4 ft, moderate 2.9 ft, major 4.4 ft

             total total departure
day/time tide tide from norm waves flood
            ft MLLW ft mhhw ft ft impact
-------- --------- --------- --------- ------- --------
24/12 am 4.2/ 4.7 0.6/ 1.1 0.1/ 0.6 3 none
24/01 PM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.2 3 none
25/01 am 3.9/ 4.4 0.2/ 0.8 -0.2/ 0.2 3 none
25/02 PM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.2 2-4 none
26/02 am 3.9/ 4.4 0.2/ 0.8 -0.2/ 0.2 1 none

Nantucket East Coast - erosion impacts

             total total departure
day/time tide tide from norm waves flood
            ft MLLW ft mhhw ft ft impact
-------- --------- --------- --------- ------- --------
24/12 am 4.5/ 5.0 0.4/ 0.9 0.0/ 0.5 3-4 none
24/01 PM 3.4/ 3.9 -0.8/-0.2 -0.2/ 0.2 4 none
25/01 am 4.4/ 4.9 0.2/ 0.8 -0.2/ 0.2 4 none
25/02 PM 3.4/ 3.9 -0.8/-0.2 -0.2/ 0.2 4 none
26/02 am 4.2/ 4.7 0.2/ 0.7 -0.2/ 0.2 2 none

Nantucket - Madaket area erosion impacts

             total total departure
day/time tide tide from norm waves flood
            ft MLLW ft mhhw ft ft impact
-------- --------- --------- --------- ------- --------
24/12 am 3.2/ 3.7 1.8/ 2.2 0.2/ 0.7 3-4 none
24/01 PM 2.2/ 2.7 0.8/ 1.3 -0.2/ 0.2 5-6 none
25/01 am 2.7/ 3.2 1.4/ 1.9 -0.2/ 0.2 6-7 none
25/02 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 5-6 none
26/02 am 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 4 none
26/02 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 none





Special Statement

Statement as of 3:49 AM EDT on June 24, 2017

Expires 12:00 PM EDT on June 24, 2017


... Potential flooding and severe weather threats over southeast
New England...

Moderate to heavy rain forecast across southeast New England this
morning with rainfall of 1 to 2 inches possible yields the potential
for urban and poor drainage flood issues. Greater concern for
coastal communities as rainfall will be coincident with high tide,
yet a lower high tide as compared to recent astronomical high tides.

In addition, embedded thunderstorms within the moderate to heavy
rain are forecast. These storms may become strong to severe with
the main threats being gusty winds and possibly a brief tornado or
waterspout.

Bulk of the flooding and severe weather threats are expected to
occur through roughly noon, clearing out and concluding thereafter.


Sipprell


349 am EDT Sat Jun 24 2017

... Potential flooding and severe weather threats over southeast
New England...

Moderate to heavy rain forecast across southeast New England this
morning with rainfall of 1 to 2 inches possible yields the potential
for urban and poor drainage flood issues. Greater concern for
coastal communities as rainfall will be coincident with high tide,
yet a lower high tide as compared to recent astronomical high tides.

In addition, embedded thunderstorms within the moderate to heavy
rain are forecast. These storms may become strong to severe with
the main threats being gusty winds and possibly a brief tornado or
waterspout.

Bulk of the flooding and severe weather threats are expected to
occur through roughly noon, clearing out and concluding thereafter.


Sipprell

High Surf Advisory, Coastal Flood Statement

Statement as of 4:14 AM EDT on June 24, 2017

Expires 1:00 AM EDT on June 25, 2017


... High surf advisory in effect until 8 PM EDT this evening...

... Splashover on the most vulnerable shoreline roads between 10 PM and 1 am
tonight...

* location... Nantucket

* timing... high surf today. Tidal impacts around the time of high tide near
midnight.

* Surf and rip current risk... seas up to 7 feet just offshore will result in
high surf and an increased risk for dangerous rip currents.

* Tidal departure... less than one half foot.

* Coastal flood impacts... very minor inundation of the typical most vulnerable
shoreline roads.

Precautionary/preparedness actions...

A rip current... sometimes mistakenly called an undertow... is a strong but
narrow current of water flowing from the beach to the surf zone. It can rapidly
carry a swimmer into deeper water... and exhaust an individual trying to swim
against it.

If you are a poor swimmer and are caught in a rip current... swim parallel to
the beach until out of its pull... then swim back to shore. Another means of
escape for good swimmers is to ride the current out until it dissipates... then
swim back to shore outside of the rip current.

Do not attempt to swim directly into the rip current... it can exhaust and drown
even the strongest swimmer.

Heed the advice of the beach patrol and swim only at guarded beaches. Be
especially cautious near piers and jetties... where rip currents can be
enhanced.

In addition... viewers of large surf should stay in safe areas well away from
possible splashover. Individual waves may be more than twice the average wave
height... which can sweep a person into the water from what may seem to be a
safe viewing area. Falling into turbulent and sometimes Rocky Waters can result
in injury that reduces the chance of survival.



Time of high total tides are approximate to the nearest hour.

Nantucket Harbor
MLLW categories - minor 5.0 ft, moderate 6.5 ft, major 8.0 ft
mhhw categories - minor 1.4 ft, moderate 2.9 ft, major 4.4 ft

             total total departure
day/time tide tide from norm waves flood
            ft MLLW ft mhhw ft ft impact
-------- --------- --------- --------- ------- --------
24/12 am 4.2/ 4.7 0.6/ 1.1 0.1/ 0.6 3 none
24/01 PM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.2 3 none
25/01 am 3.9/ 4.4 0.2/ 0.8 -0.2/ 0.2 3 none
25/02 PM 2.8/ 3.4 -0.8/-0.2 -0.2/ 0.2 2-4 none
26/02 am 3.9/ 4.4 0.2/ 0.8 -0.2/ 0.2 1 none

Nantucket East Coast - erosion impacts

             total total departure
day/time tide tide from norm waves flood
            ft MLLW ft mhhw ft ft impact
-------- --------- --------- --------- ------- --------
24/12 am 4.5/ 5.0 0.4/ 0.9 0.0/ 0.5 3-4 none
24/01 PM 3.4/ 3.9 -0.8/-0.2 -0.2/ 0.2 4 none
25/01 am 4.4/ 4.9 0.2/ 0.8 -0.2/ 0.2 4 none
25/02 PM 3.4/ 3.9 -0.8/-0.2 -0.2/ 0.2 4 none
26/02 am 4.2/ 4.7 0.2/ 0.7 -0.2/ 0.2 2 none

Nantucket - Madaket area erosion impacts

             total total departure
day/time tide tide from norm waves flood
            ft MLLW ft mhhw ft ft impact
-------- --------- --------- --------- ------- --------
24/12 am 3.2/ 3.7 1.8/ 2.2 0.2/ 0.7 3-4 none
24/01 PM 2.2/ 2.7 0.8/ 1.3 -0.2/ 0.2 5-6 none
25/01 am 2.7/ 3.2 1.4/ 1.9 -0.2/ 0.2 6-7 none
25/02 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 5-6 none
26/02 am 2.7/ 3.2 1.3/ 1.8 -0.2/ 0.2 4 none
26/02 PM 2.2/ 2.7 0.9/ 1.4 -0.2/ 0.2 4 none





Weather Severe Map
Alabama - Flood Warning , Flash Flood Watch , Coastal Hazard Statement, Flash Flood Watch , Areal Flood Advisory, Flash Flood Watch , Areal Flood Advisory, Coastal Hazard Statement, Flash Flood Watch , Public Information Statement , Public Information Statement
Alaska - High Wind Warning , Special Statement
Arizona - Excessive Heat Warning , Heat Advisory , Record Report
Arkansas - Flood Warning , Record Report
California - Areal Flood Warning , Flood Warning, Areal Flood Warning , Areal Flood Advisory , Excessive Heat Warning , Heat Advisory , Excessive Heat Warning, Heat Advisory , Fire Weather Watch , Beach Hazard Statement , Record Report
Colorado - Public Information Statement , Public Information Statement
Connecticut - Areal Flood Advisory
Florida - Flood Warning , Coastal Hazard Statement , Coastal Hazard Statement, Flash Flood Watch , Flash Flood Watch , Record Report
Georgia - Flash Flood Watch
Hawaii - Special Statement
Idaho - Areal Flood Warning , Flood Warning , Flood Warning, Areal Flood Warning , Flood Advisory
Illinois - Flood Warning
Indiana - Flood Warning , Beach Hazard Statement , Record Report
Iowa - Record Report
Kansas - Public Information Statement , Public Information Statement
Kentucky - Flood Warning , Areal Flood Warning , Areal Flood Warning , Areal Flood Advisory , Record Report
Louisiana - Flood Warning , Flash Flood Watch
Maine - Special Statement , Public Information Statement
Maryland - Coastal Flood Advisory , Public Information Statement
Massachusetts - Areal Flood Advisory , Coastal Flood Statement , Areal Flood Advisory, High Surf Advisory , High Surf Advisory, Coastal Flood Statement , High Surf Advisory , Special Statement
Michigan - Flood Warning , Beach Hazard Statement
Minnesota - Record Report
Mississippi - Flood Warning , Areal Flood Advisory, Flash Flood Watch , Flash Flood Watch
Missouri - Areal Flood Advisory
Nevada - Areal Flood Advisory , Excessive Heat Warning , Fire Weather Watch
New Jersey - Flash Flood Warning , Areal Flood Advisory
New Mexico - Record Report
New York - Areal Flood Advisory , Public Information Statement
North Carolina - Beach Hazard Statement , Record Report
North Dakota - Flood Warning
Ohio - Areal Flood Warning , Flood Warning
Oregon - Heat Advisory , Excessive Heat Warning, Heat Advisory , Excessive Heat Warning , Fire Weather Watch
Pennsylvania - Flash Flood Warning , Areal Flood Advisory , Flood Advisory
Puerto Rico -
Rhode Island - Areal Flood Advisory, High Surf Advisory , Areal Flood Advisory , Special Statement
South Carolina - Coastal Hazard Statement , Beach Hazard Statement
Tennessee - Public Information Statement
Texas - Flood Warning , Flash Flood Warning , Areal Flood Advisory , Coastal Flood Advisory, Coastal Hazard Statement , Coastal Hazard Statement , Special Statement , Beach Hazard Statement , Record Report , Public Information Statement , Public Information Statement
Utah - Excessive Heat Warning
Washington - Heat Advisory , Excessive Heat Warning , Record Report
West Virginia - Areal Flood Warning
Wisconsin - Flood Warning
Wyoming - Areal Flood Warning
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