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Flash Flood Watch, Coastal Flood Advisory Issued

Narragansett – The National Weather Service (Taunton) issued several advisories on Tuesday in anticipation of heavy rains throughout the day on Wednesday.

(Map Courtesy National Weather Service Boston/Taunton, MA) Last Map Update: Tue, Aug. 12, 2014 at 4:00:08 pm EDT

(Map Courtesy National Weather Service Boston/Taunton, MA) Last Map Update: Tue, Aug. 12, 2014 at 4:00:08 pm EDT

COASTAL FLOOD ADVISORY

A COASTAL HAZARD message was issued by the National Weather Service (NWS) Boston/Taunton, MA on Wednesday afternoon.

“POCKETS OF SPLASH OVER AND MINOR COASTAL FLOODING POSSIBLE ACROSS PORTIONS OF THE EAST AND SOUTH COASTS DURING THE LATE WEDNESDAY MORNING TO MID AFTERNOON HIGH TIDE CYCLE” – NWS Boston/Taunton, MA

Areas expected to be impacted are the east and south coasts of Rhode Island and Massachusetts, including Nantucket Harbor.

Coastal flooding, pockets of splash over and minor coastal flooding are expected from late Wednesday morning into the mid-afternoon hours, according to NWS.

According to the advisory,

“POCKETS OF MINOR COASTAL FLOODING MAY RESULT IN SOME FLOODING OF THE MOST VULNERABLE SHORE ROADS DURING THE LATE WEDNESDAY MORNING INTO MID AFTERNOON HIGH TIDE CYCLE.

HEAVY RAIN COMBINED WITH ONSHORE FLOW MAY EXACERBATE THE PROBLEM… DELAYING DRAINAGE OF THE WATER OUT AFTER THE HIGH TIDE.”


sandy floods mat

Coastal flooding impacts summer residents in Matunuck. (Photo Tracey C. O’Neill 2012-2014)

FLASH FLOOD WATCH

“HEAVY RAIN WILL BRING THE POTENTIAL FOR URBAN AND LOCALIZED FLASH FLOODING ON WEDNESDAY” -National Weather Service, Boston/Taunton, MA

Issued at 3:46 PM, a Flash Flood Watch is in effect from 6:00 AM Wednesday morning until 8:00 PM Wednesday evening. 

The watch is in effect for all of Rhode Island and Massachusetts (except for Cape Cod and the Islands), Northern Connecticut and Southern New Hampshire.

Steady rain is expected in the region moving from west to east towards daybreak Wednesday, according to NWS.
Rain is expected to become heavy into Wednesday afternoon, before tapering off in the evening.

Thunderstorms and torrential rainfall may be seen with rainfall rates of up to 2 inches an hour. Potential exists for urban and localized flash flooding. The NWS Flash Flood Watch also warned of the possibility of small stream flooding.


Hurricane Irene pounds the pilings and lower deck at the Ocean Mist, Matunuck during Hurricane Irene October 2011. (Photos credit Tracey C. O'Neill)

NWS Hazardous Weather Outlook warns of possibility of high surf on Wednesday. Shown, Hurricane Irene pounds the pilings and lower deck at the Ocean Mist, Matunuck October 2011. (Photos credit Tracey C. O’Neill)


HAZARDOUS WEATHER OUTLOOK

FOR WASHINGTON AND NEWPORT COUNTIES IN RHODE ISLAND

In addition to the Coastal Flood Advisory and Flash Flood Watch, NWS issued a Hazardous Weather Outlook for Washington and Newport Counties in Rhode Island, to include the possibility of an isolated risk for severe weather on Wednesday

According to NWS,

“THE MAIN THREAT WOULD BE FOR ISOLATED STRONG WIND GUSTS…BUT THERE IS A LOW PROBABILITY FOR A BRIEF TORNADO. FINALLY…A HIGH SURF ADVISORY MAY BE NEEDED FOR OCEAN EXPOSED BEACHES ON WEDNESDAY.”

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