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Great Diamond Island Severe Weather Warnings, Watches and Advisories

Select the Advisory Below for Details
Begins: 4:02 PM Sat, Sep 6, 2025
Expires: 4:45 PM Sat, Sep 6, 2025
Begins: 3:48 PM Sat, Sep 6, 2025
Expires: 4:30 PM Sat, Sep 6, 2025
Begins: 1:13 PM Sat, Sep 6, 2025
Expires: 8:00 PM Sat, Sep 6, 2025


SEVERE THUNDERSTORM WARNING
Begins: 4:02 PM Sat, Sep 6, 2025
Expires: 4:45 PM Sat, Sep 6, 2025
At 402 PM EDT, a severe thunderstorm was located near Cornish, or 12
miles south of Naples, moving northeast at 30 mph.

HAZARD...Golf ball size hail and 70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.

Locations impacted include...
Raymond, Windham, Sebago, Baldwin, Frye Island, Naples, Casco,
Standish, Gray, Limington, Hiram, Cumberland, Cornish, Gorham, and
Falmouth.

This also includes...
Sebago Lake and Douglas Mountain.

This includes Interstate 95 between mile markers 58 and 60.

SEVERE THUNDERSTORM WARNING
Begins: 3:48 PM Sat, Sep 6, 2025
Expires: 4:30 PM Sat, Sep 6, 2025
SVRGYX

The National Weather Service in Gray Maine has issued a

* Severe Thunderstorm Warning for...
Southeastern Oxford County in western Maine...
Central Androscoggin County in southwestern Maine...
Northwestern Cumberland County in southwestern Maine...

* Until 430 PM EDT.

* At 348 PM EDT, a severe thunderstorm was located near Bridgton,
moving northeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* Locations impacted include...
Buckfield, Bridgton, Auburn, Otisfield, Harrison, Hebron, Turner,
Naples, Poland, Mechanic Falls, Minot, Oxford, Paris, Greene,
Lewiston, Casco, Hartford, Norway, Wales, and Sabattus.

This also includes...
Long Lake, Crocker Hill, Streaked Mountain, and Singepole Ridge.

SEVERE THUNDERSTORM WATCH
Begins: 1:13 PM Sat, Sep 6, 2025
Expires: 8:00 PM Sat, Sep 6, 2025
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
607 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS

IN MAINE THIS WATCH INCLUDES 9 COUNTIES

IN SOUTH CENTRAL MAINE

KENNEBEC              SAGADAHOC             WALDO

IN SOUTHWEST MAINE

ANDROSCOGGIN          CUMBERLAND            YORK

IN WEST CENTRAL MAINE

SOMERSET

IN WESTERN MAINE

FRANKLIN              OXFORD

IN NEW HAMPSHIRE THIS WATCH INCLUDES 8 COUNTIES

IN CENTRAL NEW HAMPSHIRE

BELKNAP               MERRIMACK             STRAFFORD
SULLIVAN

IN NORTHERN NEW HAMPSHIRE

CARROLL

IN SOUTHERN NEW HAMPSHIRE

CHESHIRE              HILLSBOROUGH          ROCKINGHAM

THIS INCLUDES THE CITIES OF ALFRED, ANDOVER, ARROWSIC, ATHENS,
ATKINSON, AUBURN, AUGUSTA, AVON, BARRINGTON, BATH, BELFAST,
BETHEL, BIDDEFORD, BOSCAWEN, BOWDOIN, BOWDOINHAM, BRIDGEWATER,
BROOKFIELD, BROOKS, BRYANT POND, BYRON, CANTERBURY,
CAPE ELIZABETH, CHESTER, CHINA, CLAREMONT, COBURN GORE, CONCORD,
CORNISH, CORNVILLE, CROYDON, DAVIS, DERRY, DOVER, DUNBARTON,
DURHAM, EMBDEN, FARMINGTON, GILFORD, GILSUM, GOSHEN, GRANTHAM,
GREENE, HAMPSTEAD, HANOVER, HOLLIS, JACKSON, JACKSON, KEENE,
KINGFIELD, KNOX, LACONIA, LEBANON, LEMPSTER, LEWISTON, LIBERTY,
LOUDON, MADBURY, MANCHESTER, MARLOW, MINOT, MONTVILLE, MORRILL,
NASHUA, NEW GLOUCESTER, NEW PORTLAND, NEWTON, OLD ORCHARD BEACH,
OQUOSSOC, OSSIPEE, PALERMO, PALMYRA, PELHAM, PHIPPSBURG,
PITTSFIELD, PLAISTOW, PORTLAND, RANGELEY, ROCHESTER, ROLLINSFORD,
SABATTUS, SACO, SALEM, SANFORD, SIDNEY, SKOWHEGAN, SOMERSWORTH,
SOUTH PORTLAND, SULLIVAN, SURRY, TOPSHAM, TUFTONBORO, TURNER,
UNITY, UPTON, VASSALBORO, WAKEFIELD, WALES, WATERVILLE,
WESTBROOK, WILSONS MILLS, WINDSOR, AND WOLFEBORO.

What is the difference between a weather warning, watch and advisory?

The National Weather Service issues alerts in different categories to indicate the severity of storms and if the public should take immediate action to prevent the loss of life or property or be aware of the potential of the same.

Weather Warning

A weather warning is issued when severe weather conditions are occuring or imminent and there is danger to life and/or property. The warning will include what action should be taken including evacuation or shelter in place and should be heeded immediately. Warnings are usually issued for a small, specific area and for a definite period of time.

Weather Watch

A weather watch is an alert issued by the National Weather Service when conditions are favorable for the development of severe weather. A weather watch means that severe weather is possible in the area, so it is important to stay tuned to the latest forecasts and be prepared for potential storms.

The purpose of a weather watch is to provide advance warning to people in the affected area so that they can take necessary precautions. It is important to remember that a weather watch does not mean that severe weather will definitely occur, but simply that there is a higher chance of it happening.

If you live in an area where severe weather is common, it may be wise to have a plan in place for what you will do if a storm hits. Make sure you have plenty of food and water stored, as well as flashlights, batteries, and other supplies. You may also want to consider evacuating if necessary.

Weather Advisory

An advisory means the conditions are likely to occur. These are typically used for less severe weather events like frost or winds but can be used for other types of severe weather.

What is a Red Flag Warning?

A red flag warning is issued by the National Weather Service to inform the public, firefighters, and land management agencies that conditions are ideal for wildland fires and any fire which does start could spread rapidly. These are often issued after drought conditions, when humidity is very low and especially when there are high or erratic winds. The possibility of lightning is also a determining factor. Fire fighting agencies often will increase their staffing and equipment resources due to the forecast risk. For the public, a Red Flag Warning often means high fire danger leading to restrictions or bans on outdoor burning including burn piles, burn barrels and campfires. Use of anything which may produce sparks, including outdoor lawn equipment, chainsaws and welding, may be restricted or prohibited.

The weather criteria for fire weather watches and red flag warnings vary with each Weather Service office’s warning area based on the local vegetation type, topography, and distance from major water sources. They usually include the daily vegetation moisture content calculations, expected afternoon high temperature, afternoon minimum relative humidity and daytime wind speed.

An enhanced version of the warning, called extreme red flag warning, may be issued. This means that conditions for fire growth and behavior are extremely dangerous due to a combination of strong winds, very low humidity, long duration, and very dry fuels.

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