Potentially Historic June Heatwave On The Way

301

FXUS61 KCAR 011640

AFDCAR

Area Forecast Discussion

National Weather Service Caribou ME

1240 PM EDT Tue Jun 1 2021

.SYNOPSIS...

An upper level trough will cross the region from the west this

afternoon. High pressure then slowly builds across the area

from the west tonight through Wednesday. Another low pressure

from the west will cross the area later Thursday and move east

across the Maritimes on Friday. A cold front will approach from

the northwest late Saturday.

&&

......LONG TERM /FRIDAY THROUGH MONDAY/...

Fri AM starts mild in the mid to upper 50s, cloudy with showers

slowly departing to the east with some patchy fog. Another

shortwave will approach from the west and we do expect some

breaks in the clouds to provide some daytime heating. Afternoon

showers & storms will be possible with best chance of storms

across the Bangor region to interior Washington county. Timing

of the storms & coverage is hard to determine at this point but

do expect some convection to be around. Highs will climb into

the upper 70s to low 80s with a cool sea breeze at the shore.

That clears the coast Fri night and with light flow and wet

grounds expect patchy fog to form with lows Sat AM in the mid to

upper 50s. A cold front will approach from the NW by Sat PM

likely sparking off more showers and storms. The best chance of

convection this time will be across the north into the Central

Highlands but once again will be dependent on daytime heating.

The partly sunny skies will likely result in warmer highs with

temperatures climbing into the low to mid 80s but once again

cooler at the coast with a sea breeze. Sun expect that front to

stall to our south with a dry warm west flow setting up given

the 500mb ridging taking over to our SW. Highs will climb into

the low to mid 80s north, mid to upper 80s across the Highlands

into Bangor area. Along the immediate coast expect a sea breeze

to form as the flow will be weak and winds shift SW in the

afternoon with the large temperature imbalance. Sun night into

Monday the stalled boundary will lift back NE with a SW flow

developing again. 594dam 500mb ridge setting up over the Mid

Atlantic coast will begin to pump much warmer air into the

region. This will pump +20C to +22C 925mb temps into the region

resulting in highs in the upper 80s to low 90s from northern to

southern zones. This would break daily records for Monday at

CAR, HUL, MLT, BGR. This heat looks to last into mid next week

with potential for more record breaking days.

&&.....