Severe Thunderstorm Warning 52, NWS Gray, ME

Area Forecast Discussion
National Weather Service Gray ME
308 PM EDT Mon Aug 19 2019

.SYNOPSIS...
A cold front will trigger showers and thunderstorms over
southern areas through this evening. High pressure will crest
over the region on Tuesday before shifting offshore to the
southeast. A low pressure will slowly move northeast through
southern Quebec on Wednesday. A secondary trough of low pressure
will drop southeast through the region Thursday night and
Friday. High pressure will gradually build in from the west over
the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
A short wave trough will move across the region this evening,
and will be associated with scattered showers and thunderstorms.
Given the amount of moisture and CAPE along with steep low
level lapse rates, a few storms may be severe. Damaging winds
and torrential downpours will be the main threat. The threat for
storms ends by 00z as a short wave trough quickly moves
offshore. Clearing is expected tonight in the wake of the front.
Valley fog, some dense, is expected overnight. Some dense fog
will also be possible on the Midcoast as well.

&&

.SHORT TERM /TUESDAY THROUGH TUESDAY NIGHT/...
Fair weather expected Tuesday with short wave ridging in place.
Highs will be well into the 80s, but with far less humidity.
The next short wave trough and attendant warm front approaches
late Tuesday night, with an increasing chances for showers and
a few thunderstorms across southern zones late.

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
Unsettled weather through Friday and drier air will move in for the
weekend.

A frontal system to the south of the forecast area will move back
north with increasing chance of showers and thunderstorms through
Wednesday night. Dewpoint temperatures will climb back to near
70 on Wednesday afternoon. Wednesday will start out with chance
showers and thunderstorms with the warm front passage. The cold
front will pass through later in the day giving likely showers
and thunderstorms in the afternoon and evening.

Thursday will still be a warm day but dewpoint temperatures will be
a bit more comfortable. The cooler and drier air sets in for Friday
with dewpoints in the mid 50s or less. Showers possible in the
mountains Friday afternoon.

High pressure from the west will dominate the weekend with
cooler and drier air. High temperatures over the weekend and
Monday are forecast to be in the 70s with low humidity.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
Short Term...Sct thunderstorms through 00z this evening with
locally gusty SFC winds. Otherwise, LIFR conditions in fog and
low clouds tonight on the Midcoast of ME, as well as interior
river valleys. VFR on Tuesday.

Long Term...Expect occasional MVFR/IFR in showers and
thunderstorms on Wednesday and Thursday. Friday possible MVFR
in afternoon showers at HIE but VFR expected elsewhere.

&&

.MARINE...
Short Term...Locally strong wind gusts in thunderstorms are
possible on the waters through 8 PM tonight. Otherwise
conditions are expected to remain below SCA thresholds through
Tuesday night. Marine fog is likely off the Midcoast of ME
tonight.

Long Term...SCA possible Wednesday and Thursday mainly due to
seas.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...None.
NH...None.
MARINE...None.

&&

NEAR TERM...Ekster
SHORT TERM...Ekster
LONG TERM...Becker

Hazardous Weather Outlook
National Weather Service Gray ME
257 PM EDT Mon Aug 19 2019

MEZ018-019-023>025-NHZ004-006-008>015-201900-
Interior York-Interior Cumberland-Coastal York-Coastal Cumberland-
Sagadahoc-Northern Carroll-Southern Carroll-Merrimack-Belknap-
Strafford-Cheshire-Eastern Hillsborough-Interior Rockingham-
Coastal Rockingham-Western And Central Hillsborough-
257 PM EDT Mon Aug 19 2019

...SEVERE THUNDERSTORM WATCH 600 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for Maine, south central Maine,
southwest Maine, New Hampshire, central New Hampshire, northern New
Hampshire and southern New Hampshire.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Another round of showers and thunderstorms are expected Wednesday.
Some thunderstorms may approach severe limits in southern New
Hampshire and southwest Maine.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

NHZ005-007-201900-
Southern Grafton-Sullivan-
257 PM EDT Mon Aug 19 2019

This Hazardous Weather Outlook is for central New Hampshire and
northern New Hampshire.

.DAY ONE...This Afternoon and Tonight.

Scattered showers and thunderstorms are also expected this afternoon
and evening. A few thunderstorms may reach severe limits with
damaging winds, heavy rain and hail.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Another round of showers and thunderstorms are expected Wednesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ANZ152>154-201900-
Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM-
Casco Bay-
Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out
25 NM-
257 PM EDT Mon Aug 19 2019

...SEVERE THUNDERSTORM WATCH 600 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

Areas of Fog overnight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
 conditions according to Standard Operating Procedures.

ANZ150-151-201900-
Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM-
Penobscot Bay-
257 PM EDT Mon Aug 19 2019

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...This Afternoon and Tonight.

Isolated showers and thunderstorms are also expected this afternoon
and evening. A few thunderstorms may reach severe limits with
damaging winds, heavy rain and hail. Areas of Fog overnight.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MEZ007>009-012>014-020>022-026>028-NHZ001>003-201900-
Northern Oxford-Northern Franklin-Central Somerset-Southern Oxford-
Southern Franklin-Southern Somerset-Androscoggin-Kennebec-
Interior Waldo-Lincoln-Knox-Coastal Waldo-Northern Coos-
Southern Coos-Northern Grafton-
257 PM EDT Mon Aug 19 2019

This Hazardous Weather Outlook is for south central Maine,
southwest Maine, west central Maine, western Maine and northern New
Hampshire.

.DAY ONE...This Afternoon and Tonight.

Scattered showers and thunderstorms are also expected this afternoon
and evening. A few thunderstorms may reach severe limits with
damaging winds, heavy rain and hail.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Another round of showers and thunderstorms are expected Wednesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

Special Weather Statement
National Weather Service Gray ME
254 PM EDT Mon Aug 19 2019

NHZ006-008>010-013-191945-
Merrimack-Belknap-Strafford-Southern Carroll-Interior Rockingham-
254 PM EDT Mon Aug 19 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN ROCKINGHAM...
STRAFFORD...SOUTHEASTERN BELKNAP AND SOUTHEASTERN MERRIMACK
COUNTIES...

At 254 PM EDT, a strong thunderstorm was located over Epsom, or 9
miles west of Northwood, moving northeast at 25 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Concord, Rochester, Northwood, Dover, Hooksett, Somersworth,
Barrington, Farmington, Lebanon, Loudon, Alton, Barnstead, Epsom,
Allenstown, Deerfield, Candia, Madbury, Chichester, Brookfield and
Middleton.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4323 7152 4355 7107 4342 7098 4342 7099
      4339 7099 4335 7097 4334 7096 4334 7093
      4332 7092 4330 7090 4329 7091 4326 7086
      4321 7082 4308 7138
TIME...MOT...LOC 1854Z 240DEG 23KT 4321 7133

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