New Daily Maximum Temperature Records Set In NB & NS - 03/15/2025 - Saint Patrick's Day Rainstorm

Weather summary

for New Brunswick

issued by Environment Canada

at 6:34 a.m. ADT Sunday 16 March 2025.

Discussion.

The following areas set a daily maximum temperature record on March 

15, 2025 (temperature values given in degrees Celsius): 

DOAKTOWN AREA (Doaktown Auto RCS) 

New record of 13.7 

Old record of 9.5 set in 1989 

Records in this area have been kept since 1952 

EDMUNDSTON AREA (Edmundston) 

New record of 14.2 

Old record of 13.0 set in 2010 

Records in this area have been kept since 1918 

FREDERICTON AREA (Fredericton CDA CS) 

New record of 13.9 

Old record of 13.3 set in 1945 

Records in this area have been kept since 1871 

ST. STEPHEN AREA (St. Stephen) 

New record of 13.9 

Old record of 11.5 set in 2010 

Records in this area have been kept since 1951 

WOODSTOCK AREA (Woodstock Newbridge) 

New record of 12.9 

Old record of 11.5 set in 2010 

Records in this area have been kept since 1886 

Note: the temperature records reported here have been derived from a 

selection of historical stations in each geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

Weather summary

for Nova Scotia

issued by Environment Canada

at 6:37 a.m. ADT Sunday 16 March 2025.

Discussion.

The following areas set a daily maximum temperature record on March 

15, 2025 (temperature values given in degrees Celsius): 

ANTIGONISH AREA (Tracadie) 

New record of 10.8 

Old record of 10.6 set in 1913 

Records in this area have been kept since 1910 

HALIFAX AREA (Halifax Stanfield Int'l A) 

New record of 12.6 

Old record of 12.4 set in 2010 

Records in this area have been kept since 1953 

TRURO AREA (Debert) 

New record of 13.5 

Old record of 12.5 set in 2000 

Records in this area have been kept since 1873 

Note: the temperature records reported here have been derived from a 

selection of historical stations in each geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

Flood Watch

National Weather Service Gray ME

1020 PM EDT Sun Mar 16 2025

MEZ012>014-018>022-033-NHZ002>010-171430-

/O.NEW.KGYX.FA.A.0001.250317T0800Z-250318T0400Z/

/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Southern Oxford-Southern Franklin-Southern Somerset-Interior York-

Central Interior Cumberland-Androscoggin-Kennebec-Interior Waldo-

Interior Cumberland Highlands-Southern Coos-Northern Grafton-

Northern Carroll-Southern Grafton-Southern Carroll-Sullivan-

Merrimack-Belknap-Strafford-

Including the cities of Bethel, Ossipee, Hollis, Bridgewater,

Berlin, Chesterville, Plymouth, Cornville, Rochester, Limington,

New Vineyard, Rumford, Buxton, Lincoln, Chatham, Thornton,

Albany, Auburn, Vassalboro, Bethlehem, Bryant Pond, Gilford, New

Sharon, Brooks, Lempster, Lebanon, Waterville Valley, Liberty,

Croydon, Embden, Lancaster, Montville, Sidney, Alfred, Dunbarton,

Naples, Skowhegan, Jackson, Oxford, Grantham, Norway, North

Windham, Palermo, Littleton, Woodstock, Unity, Goshen, Wilton,

Sugar Hill, Hooksett, Holderness, Greene, Gorham, Locke Mills,

Somersworth, Tuftonboro, Harrison, Milton, Wolfeboro, Palmyra,

Boscawen, Temple, Wakefield, Dummer, Hanover, New Gloucester,

Sabattus, Ashland, Laconia, Dover, Durham, Sanford, Morrill,

Goodwins Mills, Athens, Pittsfield, Cornish, Turner, Winterport,

Conway, China, Windsor, Waterville, Lewiston, North Conway,

Augusta, Jay, York Pond, Gray, Barrington, Madbury, Lyme,

Berwick, Newport, Rumney, Moultonborough, Fryeburg, Ellsworth,

Canterbury, Livermore Falls, Meredith, Newry, Concord, Crawford

Notch, Rollinsford, Knox, Brookfield, Waldo, Charlestown,

Bridgton, Farmington, Wales, Loudon, Minot, Madison, Claremont,

and Milan

1020 PM EDT Sun Mar 16 2025

...FLOOD WATCH IN EFFECT FROM 4 AM EDT MONDAY THROUGH MONDAY

EVENING...

* WHAT...Flooding caused by rain and snowmelt is possible as well as

  localized flooding from ice jams.

* WHERE...Portions of Maine, including the following areas,

  Androscoggin, Central Interior Cumberland, Interior Cumberland

  Highlands, Interior Waldo, Interior York, Kennebec, Southern

  Franklin, Southern Oxford and Southern Somerset and New Hampshire,

  including the following areas, Belknap, Merrimack, Northern

  Carroll, Northern Grafton, Southern Carroll, Southern Coos,

  Southern Grafton, Strafford and Sullivan.

* WHEN...From 4 AM EDT Monday through Monday evening.

* IMPACTS...Excessive rainfall runoff late tonight through Monday,

  as well as snowmelt may result in flooding of rivers, creeks,

  streams, and other low-lying and flood-prone locations. Creeks and

  streams may rise out of their banks. One to two inches of rain is

  expected through Monday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor the latest forecast and be alert for possible

Flood Warnings. Those living in areas prone to flooding should be

prepared to take action should flooding develop.

&&

$$

mle

430

FXUS61 KCAR 170123

AFDCAR

Area Forecast Discussion

National Weather Service Caribou ME

923 PM EDT Sun Mar 16 2025

.SYNOPSIS...

A slow moving front remains north of Maine through tonight. A

cold front then slowly crosses the region Monday into Monday

night. A wave of low pressure rides along the front Monday night

into Tuesday. High pressure builds in Wednesday. A low pressure

system approaches Thursday and moves through the area Friday.

&&

.NEAR TERM /THROUGH MONDAY/...

9:20 PM Update...Low stratus has now returned to the whole area

with temperatures across the region in the low 50s including

both hills and valleys. Made minor adjustments for current

conditions. Otherwise, forecast remains on track.

Previous discussion...

Very mild tonight ahead of the approaching cold front, with lows

mainly in the upper 40s to lower 50s. Stronger winds aloft move

in tonight, but don`t expect the strongest winds to mix to the

surface. Still, looking for gusts to around 40 mph along the

coast, and 30 mph inland. Look for intermittent light rain and

drizzle in the evening, but a steadier more moderate rain moving

in from west to east later in the night. Still will be some

fog, but think the stronger south breeze will keep the fog from

being too dense at most places except on hilltops, so don`t

think we will need a dense fog advisory. Expect the low clouds

which had vacated Central/Northern Aroostook Sunday afternoon to

move back in early this evening.

Monday...

Light to moderate rain continues through Monday. Have raised

rain totals, but still don`t expect enough rain for flooding.

Could be some localized minor issues in areas with poor drainage

though. Cold front moves through from west to east through the

day, with the south breeze switching to the west. Looking for

rain to change to snow over far northern areas like the St John

Valley around 5-6pm, and perhaps down to Caribou by about 8pm,

as rain lingers behind the surface cold front, thanks to moist

southerly flow aloft and perhaps a weak surface low developing

on the front along or just off our coastline. Some uncertainty,

however, in timing of the rain to snow changeover. Any snow

accumulations by 8pm should be less than inch over the far. Will

have to watch for roads freezing over in the north Monday

evening as well as temps drop below freezing without having a

chance to dry out.

&&

.SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/...

Synoptic setup: As the upper level trough begins to turn

neutrally tilted Monday night into Tuesday, eastward progression

of the cold front will slow and precip will linger across the

state longer, through the night. The southern end of this trough

will then begin to cutoff later on Tuesday, allowing for precip

to exit the area and high pressure to return. Behind this

trough, pressure thicknesses suggest a more mild air mass behind

the cold front, so temperatures will not plummet as quickly as

usually seen behind a strong winter cold front.

Monday night: Rain will continue across the forecast area,

which will continue to melt any remaining snow pack. Since the

ground remains frozen across the forecast area, localized

ponding and minor flooding remains possible due to rainfall

runoff. As the front continues to push through the region,

temperatures will fall, though not rapidly due to a more gradual

temperature gradient. With temperatures falling below freezing,

areas which remain wet after the rain could freeze, causing

slick conditions. Additionally, precip may switch to snow for a

few hours behind the front, resulting in minor snowfall up to an

inch possible across the north.

Tuesday: The front will continue to slowly push through the are

and exit to the east, with lingering rain across the Downeast

region on Tuesday. Temperatures will be cooler behind the front,

but highs will likely remain in the 40s once more throughout the

CWA.

Tuesday night - Wednesday: High pressure continues to build in

Tuesday night into Wednesday, with decreasing winds and clearing

skies. Temperatures will remain above normal for this time of

the year, with lows in the mid 20s to around 30 Tuesday night

and high temperatures, with the addition of return flow on the

backside of the ridge, could return to the low 50s on Wednesday.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...

Above normal temperatures will continue through the end of the

week as the next storm system approaches from the west. A low

pressure system may move through the area on Friday, with a

center of low pressure passing just south of the state of Maine.

There remains some inconsistency across various models,

especially with respect to precipitation intensity. Warm air

ahead of the system will mean it will likely begin as rain, but

a transition to snow is quite possible as cold air moves in on

the back side of an occlusion. There is some chance that snow

behind the low could accumulate several inches at least, such as

in the CMC deterministic, but some lighter solutions, such as

the GFS, bring much less accumulating precip behind the low.

This storm will continue to be closely monitored through the

week. High pressure then returns behind the storm through the

weekend.

&&

.AVIATION /01Z MONDAY THROUGH FRIDAY/...

NEAR TERM:

Northern Areas This Afternoon/Tonight...Generally VFR for the

rest of the day for FVE/CAR/PQI, as low clouds have broken out.

HUL however remains socked in with IFR or low MVFR. High

confidence in IFR/LIFR tonight with rain developing along with

fog. This includes FVE/CAR/PQI, where expect the low clouds to

surge back in around 0z. South wind 10-15 kts with gusts to 25

kts through tonight. LLWS.

Downeast Areas This Afternoon/Tonight...High confidence in

IFR/LIFR through tonight with some fog. Rain develops tonight

also. South winds 10 to 20 knots with gusts 25 to 35 knots

tonight. Southwesterly LLWS through tonight.

Monday...Mainly IFR or lower in rain. LLWS likely Monday AM.

S-SW winds 5-15 kts, becoming W-NW late. Gusts 25-30 kts

possible Downeast early AM, and up to 20 kts inland.

SHORT TERM:

Mon night: MVFR/IFR across all terminals, with potential for

LIFR at Downeast terminals, in rain. Switch to snow at northern

terminals. Winds N to NW 5 to 10 kts with gusts to 20 kts.

Tues: Improving to VFR across all terminals. M to NW winds

decreasing towards 5 kts in the afternoon.

Tues night - Wed: VFR. Winds light and variable.

Wed night - Thurs: Cigs decreasing towards MVFR/IFR. Winds

shift SE increasing to 10 to 15 kts.

Thurs night - Fri: MVFR/IFR as rain moves in from the west. SE

winds rapidly shift NW behind passing low pressure on Fri at 10

to 15 kts, gusts increasing to 20 to 25 kts.

&&

.MARINE...

NEAR TERM: Gale warning for southerly winds still looks on

track for tonight into early afternoon Monday. Seas will be

building to as high as about 10 feet on Monday. Fog over the

waters.

SHORT TERM: Winds gusting to 25 kts are likely Monday night

through Tuesday on the coastal waters, while the intra-coastals

quickly fall below Small Craft Advisory criteria Monday night.

Seas 5 to 9 ft will continue to decrease through this time as

well, becoming 3 to 6 ft by Wednesday. Sub-SCA conditions likely

through mid-week, though seas may remain near 5 to 6 ft on the

coastal waters at times.

&&

.HYDROLOGY...

A significant but controlled snow melt is expected through

Monday. Much of the snowpack is gone across Downeast areas but

significant snowpack remains in portions of the Central

Highlands and Northern Maine. That snowpack is currently "ripe"

and melting fast.

Temperatures will remain mainly in the upper 40s and 50s with

dew points in the mid 40s to low 50s, which is allowing

significant snowpack melt.

Through Monday, expecting 1 to 3+ inches of snow water

equivalent to melt across the area thanks to warm temperatures

and southerly winds. The higher numbers would mostly from high

terrain in Piscataquis and northern Penobscot County.

Thankfully, the natural flow under river ice is below normal and

rises will remain gradual. River ice will undergo weakening

through thermal rot, particularly in the Central Highlands and

remaining iced in Downeast rivers, but thermal rot is expected

areawide.

A storm system tonight into Monday night will spread rainfall

over the region, resulting in more rapid snowmelt late Sunday

into Monday. There remains uncertainty in terms of rainfall

totals for the area, with 1.25-2 inches of rain from Downeast

Maine to southern portions of the Central Highlands and SE

Aroostook, with around 0.75-1.25 inch elsewhere. Highest totals

likely over Downeast Maine.

The combination of rain, snowmelt and weakened river ice due to

thermal rot, will cause river rises sufficient to break-up and

move river ice in many locations, leading to an elevated risk

for ice jam flooding Monday and well into this week.

Our combined T/Td thawing degree hours suggest likely ice break

up early to mid this week for rivers south of Houlton,

Millinocket and Greenville. The Piscataquis would be more likely

by later Monday. The index suggests that the Aroostook and St

John Rivers could have some ice movement by the end of this week.

&&

.CLIMATE...

A record high temperature of 58 was set in Houlton today,

breaking the old record of 56 set in 2010.

A record high temperature of 57 in Caribou today tied the old

record of 57 set in 2010.

Record warm low temperatures are possible on Monday, March 17th,

depending on if a cold front passes through before midnight or

not.

March 17th Record Warm Low Temperature Records (Forecast):

Caribou (31F)         35F in 1990

Bangor (40F)          39F in 1935

Millinocket (37F)     34F in 2022

Houlton (33F)         36F in 2022

&&

.CAR WATCHES/WARNINGS/ADVISORIES...

ME...None.

MARINE...Gale Warning until 2 PM EDT Monday for ANZ050>052.

&&

$$

Near Term...Foisy/Bloomer

Short Term...AStrauser

Long Term...AStrauser

Aviation...Foisy/AStrauser

Marine...Foisy/AStrauser/Bloomer

Hydrology...Sinko/Foisy

Climate...Clark/Foisy/Bloomer

Hazardous Weather Outlook

National Weather Service Caribou ME

550 AM EDT Sun Mar 16 2025

MEZ001>006-010-011-015>017-029>032-171200-

Northwest Aroostook-Northeast Aroostook-Northern Somerset-

Northern Piscataquis-Northern Penobscot-Southeast Aroostook-

Central Piscataquis-Central Penobscot-Southern Penobscot-

Interior Hancock-Central Washington-Coastal Hancock-

Coastal Washington-Southern Piscataquis-Northern Washington-

550 AM EDT Sun Mar 16 2025

This Hazardous Weather Outlook is for Central Highlands Maine,

Coastal DownEast Maine, Far Eastern Maine, Far Northern Maine,

Interior DownEast Maine, North Woods Maine and Penobscot Valley

Maine.

.DAY ONE...Today and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Rain which develops Sunday night will persist Monday, before

ending Monday night. The combination of persistent warm temperatures

and rainfall, will lead to snowmelt and raise rivers levels. Rising

water levels will lead to the break-up of thinning river ice. This

will increase the risk for ice jam flooding going into next week.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather

conditions according to Standard Operating Procedures.

$$

10:10 PM ADT Sunday 16 March 2025

Special Weather Statement in effect for:

Queens County P.E.I.

Significant freezing rain is possible on Tuesday. 

Location: Prince Edward Island.

Freezing rain duration: In excess of 4 hours possible. 

Time span: beginning Tuesday morning, possibly continuing through Tuesday night. 

Remarks: A prolonged period of freezing rain may result in significant ice accretion on untreated surfaces and utility lines. Warnings may be required as this event draws nearer.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to PEstorm@ec.gc.ca or post reports on X using #PEStorm.

10:07 PM ADT Sunday 16 March 2025

Special Weather Statement in effect for:

Cumberland County North and Cobequid Pass

Significant freezing rain is possible Tuesday.

Location: Cumberland County North and Cobequid Pass.

Freezing rain duration: In excess of 4 hours possible. 

Time span: Beginning Tuesday afternoon, possibly intensifying Tuesday night. 

Remarks: A prolonged period of freezing rain may result in significant ice accretion on untreated surfaces and utility lines. Warnings may be required as this event draws nearer.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NSstorm@ec.gc.ca or post reports on X using #NSStorm.

10:02 PM ADT Sunday 16 March 2025

Special Weather Statement in effect for:

Moncton and Southeast New Brunswick

Significant freezing rain is possible Tuesday.

Location: Southeastern New Brunswick.

Freezing rain duration: In excess of 4 hours possible. 

Time span: Beginning Tuesday afternoon, possibly intensifying Tuesday evening. 

Remarks: A prolonged period of freezing rain may result in significant ice accretion on untreated surfaces and utility lines. Warnings may be required as this event draws nearer.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NBstorm@ec.gc.ca or post reports on X using #NBStorm.

9:56 PM ADT Sunday 16 March 2025

Rainfall Warning in effect for:

Fredericton and Southern York County

Rain, heavy at times is expected.

Total rainfall amount: 40 to 60 mm. Higher amounts possible locally.

Locations: Southwestern and south-central New Brunswick.

Time span: Monday and into Monday night.

Remarks: Rain, heavy at times, is expected to move into western New Brunswick Monday morning and move slowly eastward through the day. At this time, the heavy rain is expected to move into south-central New Brunswick on Monday evening, and then stall. By the time the precipitation ends, the heaviest amounts are expected to be along the Fundy Coast.

Heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible.

Rainfall warnings are issued when significant rainfall is expected.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NBstorm@ec.gc.ca or post reports on X using #NBStorm.