Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 628
NWS STORM PREDICTION CENTER NORMAN OK
245 PM EDT MON JUL 27 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN AND NORTHERN MAINE
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 245 PM UNTIL 900
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 55
STATUTE MILES EITHER SIDE OF A LINE FROM 10 MILES EAST NORTHEAST
OF CARIBOU MAINE TO 30 MILES WEST NORTHWEST OF AUGUSTA MAINE.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).
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 627...
DISCUSSION...STRONGER FORCING ASSOCIATED WITH UPPER LOW IN QUEBEC
WILL SPREAD EWD ACROSS PORTIONS OF WRN AND NRN MAINE THROUGH THE
AFTERNOON HOURS. A WARMING AND DESTABILIZING BOUNDARY LAYER ALONG
WITH STRONG SPEED SHEAR SHOULD BE SUFFICIENT FOR A FEW SUPERCELLS
PRODUCING SEVERE HAIL AND DAMAGING WINDS.
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 450. MEAN STORM
MOTION VECTOR 22025.
...IMY
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 628 SEVERE TSTM ME 271845Z - 280100Z
AXIS..55 STATUTE MILES EITHER SIDE OF LINE..
10ENE CAR/CARIBOU ME/ - 30WNW AUG/AUGUSTA ME/
..AVIATION COORDS.. 50NM EITHER SIDE /14NE PQI - 64N ENE/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 22025.
LAT...LON 46346701 43906959 45067113 47506863
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 628 Status Report Messages:
STATUS REPORT #4 ON WW 628
VALID 272345Z - 280040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NE BGR TO
45 WNW BGR TO 70 NW BGR TO 40 ESE CAR.
..DIAL..07/27/09
ATTN...WFO...CAR...GYX...
&&
STATUS REPORT FOR WS 628
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC003-019-021-280040-
ME
. MAINE COUNTIES INCLUDED ARE
AROOSTOOK PENOBSCOT PISCATAQUIS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 628
VALID 272235Z - 272340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNE BML
TO 60 W HUL TO 25 ESE CAR.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1693
..DIAL..07/27/09
ATTN...WFO...CAR...GYX...
&&
STATUS REPORT FOR WS 628
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC003-007-017-019-021-025-272340-
ME
. MAINE COUNTIES INCLUDED ARE
AROOSTOOK FRANKLIN OXFORD
PENOBSCOT PISCATAQUIS SOMERSET
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 628
VALID 272145Z - 272240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..DIAL..07/27/09
ATTN...WFO...CAR...GYX...
&&
STATUS REPORT FOR WS 628
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC003-007-017-019-021-025-272240-
ME
. MAINE COUNTIES INCLUDED ARE
AROOSTOOK FRANKLIN OXFORD
PENOBSCOT PISCATAQUIS SOMERSET
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 628
VALID 272025Z - 272140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..IMY..07/27/09
ATTN...WFO...CAR...GYX...
&&
STATUS REPORT FOR WS 628
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MEC003-007-017-019-021-025-272140-
ME
. MAINE COUNTIES INCLUDED ARE
AROOSTOOK FRANKLIN OXFORD
PENOBSCOT PISCATAQUIS SOMERSET
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (10%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
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.