Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 356
NWS STORM PREDICTION CENTER NORMAN OK
1240 PM EDT SUN JUN 20 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
MUCH OF EASTERN MASSACHUSETTS
MUCH OF MAINE
MUCH OF NEW HAMPSHIRE
COASTAL WATERS
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1240 PM UNTIL
700 PM EDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH
SOUTHEAST OF HOULTON MAINE TO 45 MILES NORTH NORTHWEST OF
WORCESTER MASSACHUSETTS. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
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.
DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY
OVER THE MOUNTAINS OF NEW ENGLAND. WITH STRONG HEATING ACROSS LOWER
ELEVATIONS...MLCAPES ARE AOA 1000 J/KG. COUPLED WITH 30-35 KT OF
SHEAR...A FEW OF THE THUNDERSTORMS WILL BECOME SEVERE AS THEY
DEVELOP/MOVE EWD ACROSS THE WATCH.
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 27025.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 356 SEVERE TSTM MA ME NH CW 201640Z - 202300Z
AXIS..85 STATUTE MILES NORTH AND SOUTH OF LINE..
40SSE HUL/HOULTON ME/ - 45NNW ORH/WORCESTER MA/
..AVIATION COORDS.. 75NM N/S /31SSE HUL - 35SW CON/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27025.
LAT...LON 44346748 41637222 44097222 46816748
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 356 Status Report Messages:
STATUS REPORT #4 ON WW 356
VALID 202125Z - 202240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW GON
TO 20 NE PSM TO 25 SW EPM.
..KERR..06/20/10
ATTN...WFO...BOX...GYX...CAR...
&&
STATUS REPORT FOR WS 356
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MAC009-017-021-025-202240-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
ESSEX MIDDLESEX NORFOLK
SUFFOLK
$$
ANZ051-052-150-152-154-251-202240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME OUT 25 NM
COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT
25 NM
MASSACHUSETTS BAY AND IPSWICH BAY
$$
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.
$$
STATUS REPORT #3 ON WW 356
VALID 202035Z - 202140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 W ORH TO
25 SSE AUG TO 35 NW EPM.
..DIAL..06/20/10
ATTN...WFO...BOX...GYX...CAR...
&&
STATUS REPORT FOR WS 356
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC009-013-015-023-029-202140-
ME
. MAINE COUNTIES INCLUDED ARE
HANCOCK KNOX LINCOLN
SAGADAHOC WASHINGTON
$$
MAC009-017-021-025-027-202140-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
ESSEX MIDDLESEX NORFOLK
SUFFOLK WORCESTER
$$
ANZ050-051-052-150-151-153-154-251-202140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
CASCO BAY
COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT
25 NM
MASSACHUSETTS BAY AND IPSWICH BAY
$$
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.
$$
STATUS REPORT #2 ON WW 356
VALID 201955Z - 202040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NW ORH TO
10 N PWM TO 35 NW EPM.
..DIAL..06/20/10
ATTN...WFO...BOX...GYX...CAR...
&&
STATUS REPORT FOR WS 356
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC009-013-015-023-029-031-202040-
ME
. MAINE COUNTIES INCLUDED ARE
HANCOCK KNOX LINCOLN
SAGADAHOC WASHINGTON YORK
$$
MAC009-017-021-025-027-202040-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
ESSEX MIDDLESEX NORFOLK
SUFFOLK WORCESTER
$$
NHC015-202040-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
ROCKINGHAM
$$
ANZ050-051-052-150-151-152-153-154-251-202040-
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
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 356
VALID 201835Z - 201940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S EEN TO
20 NNE LCI TO 40 NW EPM.
..DIAL..06/20/10
ATTN...WFO...BOX...GYX...CAR...
&&
STATUS REPORT FOR WS 356
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC001-005-009-011-013-015-019-023-027-029-031-201940-
ME
. MAINE COUNTIES INCLUDED ARE
ANDROSCOGGIN CUMBERLAND HANCOCK
KENNEBEC KNOX LINCOLN
PENOBSCOT SAGADAHOC WALDO
WASHINGTON YORK
$$
MAC009-017-021-025-027-201940-
MA
. MASSACHUSETTS COUNTIES INCLUDED ARE
ESSEX MIDDLESEX NORFOLK
SUFFOLK WORCESTER
$$
NHC001-003-005-011-013-015-017-201940-
NH
. NEW HAMPSHIRE COUNTIES INCLUDED ARE
BELKNAP CARROLL CHESHIRE
HILLSBOROUGH MERRIMACK ROCKINGHAM
STRAFFORD
$$
ANZ050-051-052-150-151-152-153-154-251-201940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM
INTRA COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME
COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME OUT 25 NM
PENOBSCOT BAY
COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME OUT 25 NM
CASCO BAY
COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT
25 NM
MASSACHUSETTS BAY AND IPSWICH BAY
$$
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 (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
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% (F2-F5 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.