Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 490
NWS Storm Prediction Center Norman OK
1250 PM EDT Sun Jun 30 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Maine
New Hampshire
Eastern Vermont
Coastal Waters
* Effective this Sunday afternoon and evening from 1250 PM until
800 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...Thunderstorms are expected to intensify this afternoon
while moving quickly eastward. Scattered severe/damaging winds up to
60-70 mph should be the main threat, but isolated hail around 1-1.5
inches in diameter may occur with any supercell. A brief tornado
also appears possible.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 25 miles north northwest
of Caribou ME to 20 miles southwest of Portsmouth NH. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 489...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27040.
...Gleason
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 490
NWS Storm Prediction Center Norman OK
1250 PM EDT Sun Jun 30 2024
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Maine
New Hampshire
Eastern Vermont
Coastal Waters
* Effective this Sunday afternoon and evening from 1250 PM until
800 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...Thunderstorms are expected to intensify this afternoon
while moving quickly eastward. Scattered severe/damaging winds up to
60-70 mph should be the main threat, but isolated hail around 1-1.5
inches in diameter may occur with any supercell. A brief tornado
also appears possible.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 25 miles north northwest
of Caribou ME to 20 miles southwest of Portsmouth NH. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 489...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27040.
...Gleason
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 490 SEVERE TSTM ME NH VT CW 301650Z - 010000Z
AXIS..60 STATUTE MILES EAST AND WEST OF LINE..
25NNW CAR/CARIBOU ME/ - 20SW PSM/PORTSMOUTH NH/
..AVIATION COORDS.. 50NM E/W /27NNW PQI - 30SE CON/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27040.
LAT...LON 47206694 42876990 42877226 47206950
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 490 Status Report Messages:
STATUS REPORT #5 ON WW 490
VALID 302150Z - 302240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW EEN
TO 10 ESE AUG TO 50 S HUL.
..WEINMAN..06/30/24
ATTN...WFO...GYX...CAR...BTV...
&&
STATUS REPORT FOR WS 490
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC001-005-009-013-015-023-027-029-031-302240-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN CUMBERLAND HANCOCK
KNOX LINCOLN SAGADAHOC
WALDO WASHINGTON YORK
$$
NHC001-005-011-013-015-017-019-302240-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
BELKNAP CHESHIRE HILLSBOROUGH
MERRIMACK ROCKINGHAM STRAFFORD
SULLIVAN
$$
ANZ050-051-052-150-151-152-153-154-302240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
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
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 490
VALID 302025Z - 302140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 WNW EEN
TO 30 E BML TO 30 SE HUL.
..LEITMAN..06/30/24
ATTN...WFO...GYX...CAR...BTV...
&&
STATUS REPORT FOR WS 490
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC001-005-009-011-013-015-019-023-027-029-031-302140-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN CUMBERLAND HANCOCK
KENNEBEC KNOX LINCOLN
PENOBSCOT SAGADAHOC WALDO
WASHINGTON YORK
$$
NHC001-003-005-011-013-015-017-019-302140-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
BELKNAP CARROLL CHESHIRE
HILLSBOROUGH MERRIMACK ROCKINGHAM
STRAFFORD SULLIVAN
$$
ANZ050-051-052-150-151-152-153-154-302140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
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
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 490
VALID 301940Z - 302040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 WSW MPV
TO 10 NE BML TO 75 NNE BML.
..LEITMAN..06/30/24
ATTN...WFO...GYX...CAR...BTV...
&&
STATUS REPORT FOR WS 490
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-
031-302040-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN AROOSTOOK CUMBERLAND
FRANKLIN HANCOCK KENNEBEC
KNOX LINCOLN OXFORD
PENOBSCOT PISCATAQUIS SAGADAHOC
SOMERSET WALDO WASHINGTON
YORK
$$
NHC001-003-005-007-009-011-013-015-017-019-302040-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
BELKNAP CARROLL CHESHIRE
COOS GRAFTON HILLSBOROUGH
MERRIMACK ROCKINGHAM STRAFFORD
SULLIVAN
$$
VTC017-027-302040-
VT
. VERMONT COUNTIES INCLUDED ARE
ORANGE WINDSOR
$$
ANZ050-051-052-150-151-152-153-154-302040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME OUT 25 NM
CASCO BAY
COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT
25 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 490
VALID 301835Z - 301940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEITMAN..06/30/24
ATTN...WFO...GYX...CAR...BTV...
&&
STATUS REPORT FOR WS 490
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-
031-301940-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN AROOSTOOK CUMBERLAND
FRANKLIN HANCOCK KENNEBEC
KNOX LINCOLN OXFORD
PENOBSCOT PISCATAQUIS SAGADAHOC
SOMERSET WALDO WASHINGTON
YORK
$$
NHC001-003-005-007-009-011-013-015-017-019-301940-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
BELKNAP CARROLL CHESHIRE
COOS GRAFTON HILLSBOROUGH
MERRIMACK ROCKINGHAM STRAFFORD
SULLIVAN
$$
VTC005-009-017-027-301940-
VT
. VERMONT COUNTIES INCLUDED ARE
CALEDONIA ESSEX ORANGE
WINDSOR
$$
ANZ050-051-052-150-151-152-153-154-301940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
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
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 490
VALID 301745Z - 301840Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEITMAN..06/30/24
ATTN...WFO...GYX...CAR...BTV...
&&
STATUS REPORT FOR WS 490
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC001-003-005-007-009-011-013-015-017-019-021-023-025-027-029-
031-301840-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN AROOSTOOK CUMBERLAND
FRANKLIN HANCOCK KENNEBEC
KNOX LINCOLN OXFORD
PENOBSCOT PISCATAQUIS SAGADAHOC
SOMERSET WALDO WASHINGTON
YORK
$$
NHC001-003-005-007-009-011-013-015-017-019-301840-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
BELKNAP CARROLL CHESHIRE
COOS GRAFTON HILLSBOROUGH
MERRIMACK ROCKINGHAM STRAFFORD
SULLIVAN
$$
VTC005-009-017-027-301840-
VT
. VERMONT COUNTIES INCLUDED ARE
CALEDONIA ESSEX ORANGE
WINDSOR
$$
ANZ050-051-052-150-151-152-153-154-301840-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME OUT 25 NM
CASCO BAY
COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT
25 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.