End of April Storm Update One

Coastal Hazard Message

National Weather Service Gray ME

331 PM EDT Thu Apr 29 2021

MEZ023-024-NHZ014-300600-

/O.NEW.KGYX.CF.Y.0006.210430T0400Z-210430T0600Z/

Coastal York-Coastal Cumberland-Coastal Rockingham-

331 PM EDT Thu Apr 29 2021

...COASTAL FLOOD ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 2 AM

EDT FRIDAY...

* WHAT...Minor flooding expected.

* WHERE...In New Hampshire, Coastal Rockingham County. In Maine,

  Coastal York and Coastal Cumberland Counties.

* WHEN...From midnight tonight to 2 AM EDT Friday.

* IMPACTS...Minor flooding of lots, parks, and roads with only

  isolated road closures possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be

closed. Do not drive around barricades or through water of

unknown depth. Take the necessary actions to protect flood-prone

property.

&&

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

Hampton Harbor NH

MLLW Categories - Minor 11.0 ft, Moderate 12.0 ft, Major 13.0 ft

MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 3.5 ft

             Total      Total    Departure

 Day/Time    Tide       Tide     from Norm   Waves    Flood

            ft MLLW    ft MHHW       ft       ft      Impact

 --------  ---------  ---------  ---------  -------  --------

 29/02 PM    10.1        0.6        0.6        1       None

 30/02 AM    11.5        2.0        1.0        2      Minor

 30/03 PM     9.9        0.4        0.8        2       None

 01/03 AM    10.6        1.1        0.5        2       None

 01/04 PM     9.1       -0.4        0.4       1-2      None

 02/04 AM    10.2        0.7        0.6       1-2      None

Seavey Island / Portsmouth NH

MLLW Categories - Minor 11.5 ft, Moderate 12.5 ft, Major 13.5 ft

MHHW Categories - Minor 2.7 ft, Moderate 3.7 ft, Major 4.7 ft

             Total      Total    Departure

 Day/Time    Tide       Tide     from Norm   Waves    Flood

            ft MLLW    ft MHHW       ft       ft      Impact

 --------  ---------  ---------  ---------  -------  --------

 29/02 PM     9.7        0.9        0.6        1       None

 30/02 AM    11.2        2.4        1.0        2       None

 30/03 PM     9.6        0.8        0.8        2       None

 01/03 AM    10.4        1.6        0.5        2       None

 01/04 PM     8.8       -0.0        0.4       1-2      None

 02/04 AM    10.2        1.4        0.7       1-2      None

Portland ME

MLLW Categories - Minor 12.0 ft, Moderate 13.0 ft, Major 14.0 ft

MHHW Categories - Minor 2.3 ft, Moderate 3.3 ft, Major 4.3 ft

             Total      Total    Departure

 Day/Time    Tide       Tide     from Norm   Waves    Flood

            ft MLLW    ft MHHW       ft       ft      Impact

 --------  ---------  ---------  ---------  -------  --------

 29/02 PM    11.0        1.3        0.6        2       None

 30/02 AM    12.2        2.5        0.6        2      Minor

 30/03 PM    10.6        0.9        0.6        2       None

 01/03 AM    11.7        2.0        0.6        3       None

 01/04 PM    10.0        0.3        0.4       1-2      None

 02/04 AM    11.4        1.7        0.8        2       None

&&

$$