Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 261
NWS Storm Prediction Center Norman OK
1225 PM EDT Sat Jun 6 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
North central and northeast Connecticut
Much of Massachusetts
Southern Maine
New Hampshire
Northern Rhode Island
Coastal Waters
* Effective this Saturday afternoon and evening from 1225 PM
until 800 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Scattered severe storms are expected this afternoon along
and in advance of a cold front/surface trough across New England.
The storm environment will support a threat for supercells and short
line segments capable of producing damaging winds and isolated large
hail.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 20 miles north of Augusta
ME to 30 miles east southeast of Windsor Locks CT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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 260...
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
27035.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 261 SEVERE TSTM CT MA ME NH RI CW 061625Z - 070000Z
AXIS..60 STATUTE MILES EAST AND WEST OF LINE..
20N AUG/AUGUSTA ME/ - 30ESE BDL/WINDSOR LOCKS CT/
..AVIATION COORDS.. 50NM E/W /42WSW BGR - 29ESE BDL/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
LAT...LON 44606858 41767093 41767326 44607101
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 261 Status Report Messages:
STATUS REPORT #3 ON WW 261
VALID 062040Z - 062140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 W PVD TO
5 E BOS TO 45 SE PSM.
..MOSIER..06/06/20
ATTN...WFO...BOX...GYX...
&&
STATUS REPORT FOR WS 261
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MAC005-021-023-062140-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BRISTOL NORFOLK PLYMOUTH
$$
RIC003-062140-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
KENT
$$
ANZ230-251-062140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
BOSTON HARBOR
MASSACHUSETTS BAY AND IPSWICH BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 261
VALID 061930Z - 062040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 W BAF TO
5 SSE CON TO 20 ESE MWN TO 25 E BML.
..MOSIER..06/06/20
ATTN...WFO...BOX...GYX...
&&
STATUS REPORT FOR WS 261
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC003-013-015-062040-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
HARTFORD TOLLAND WINDHAM
$$
MEC001-005-011-013-015-017-023-031-062040-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN CUMBERLAND KENNEBEC
KNOX LINCOLN OXFORD
SAGADAHOC YORK
$$
MAC005-009-013-015-017-021-023-025-027-062040-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BRISTOL ESSEX HAMPDEN
HAMPSHIRE MIDDLESEX NORFOLK
PLYMOUTH SUFFOLK WORCESTER
$$
NHC015-017-062040-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
ROCKINGHAM STRAFFORD
$$
RIC003-007-062040-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
KENT PROVIDENCE
$$
ANZ150-151-152-153-154-230-251-062040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME OUT 25 NM
CASCO BAY
COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT
25 NM
BOSTON HARBOR
MASSACHUSETTS BAY AND IPSWICH BAY
$$
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.
$$
STATUS REPORT #1 ON WW 261
VALID 061830Z - 061940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 853
..MOSIER..06/06/20
ATTN...WFO...BOX...GYX...
&&
STATUS REPORT FOR WS 261
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
CTC003-013-015-061940-
CT
. CONNECTICUT COUNTIES INCLUDED ARE
HARTFORD TOLLAND WINDHAM
$$
MEC001-005-011-013-015-017-023-031-061940-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN CUMBERLAND KENNEBEC
KNOX LINCOLN OXFORD
SAGADAHOC YORK
$$
MAC005-009-011-013-015-017-021-023-025-027-061940-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
BRISTOL ESSEX FRANKLIN
HAMPDEN HAMPSHIRE MIDDLESEX
NORFOLK PLYMOUTH SUFFOLK
WORCESTER
$$
NHC001-003-005-007-009-011-013-015-017-019-061940-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
BELKNAP CARROLL CHESHIRE
COOS GRAFTON HILLSBOROUGH
MERRIMACK ROCKINGHAM STRAFFORD
SULLIVAN
$$
RIC003-007-061940-
RI
. RHODE ISLAND COUNTIES INCLUDED ARE
KENT PROVIDENCE
$$
ANZ150-151-152-153-154-230-251-061940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
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
BOSTON HARBOR
MASSACHUSETTS BAY AND IPSWICH BAY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
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
|
Mod (60%)
|
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.