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.
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 544
NWS STORM PREDICTION CENTER NORMAN OK
430 PM MDT FRI JUL 3 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHEAST MONTANA
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 430 PM UNTIL
1100 PM MDT.
HAIL TO 2 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 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST
SOUTHWEST OF GLASGOW MONTANA TO 55 MILES NORTH OF SIDNEY MONTANA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU4).
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 540...WW 541...WW
542...WW 543...
DISCUSSION...SEVERE STORMS IN SRN SASK WILL CONTINUE DROPPING SEWD
INTO NERN MT ALONG WEAK SURFACE COLD FRONT THIS EVENING WITH RISK OF
LARGE HAIL AND ISOLATED DAMAGING WINDS. ISOLATED STRONG TO SEVERE
STORMS ARE ALSO POSSIBLE WITH DEVELOPMENT ALONG RESIDUAL SURFACE
BOUNDARIES ACROSS NERN MT.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 29015.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 544 SEVERE TSTM MT 032230Z - 040500Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
85WSW GGW/GLASGOW MT/ - 55N SDY/SIDNEY MT/
..AVIATION COORDS.. 50NM N/S /67NE LWT - 30NW ISN/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 29015.
LAT...LON 48610830 49360419 47630419 46860830
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 544 Status Report Messages:
STATUS REPORT #5 ON WW 544
VALID 040330Z - 040440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 NNW MLS
TO 45 SSE GGW TO 35 E OLF TO 25 W ISN.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1424.
..PETERS..07/04/09
ATTN...WFO...GGW...
&&
STATUS REPORT FOR WS 544
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC055-083-085-040440-
MT
. MONTANA COUNTIES INCLUDED ARE
MCCONE RICHLAND ROOSEVELT
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 544
VALID 040230Z - 040340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..07/04/09
ATTN...WFO...GGW...
&&
STATUS REPORT FOR WS 544
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-033-055-069-071-083-085-091-105-040340-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS GARFIELD MCCONE
PETROLEUM PHILLIPS RICHLAND
ROOSEVELT SHERIDAN VALLEY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 544
VALID 040135Z - 040240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..07/04/09
ATTN...WFO...GGW...
&&
STATUS REPORT FOR WS 544
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-033-055-069-071-083-085-091-105-040240-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS GARFIELD MCCONE
PETROLEUM PHILLIPS RICHLAND
ROOSEVELT SHERIDAN VALLEY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 544
VALID 040035Z - 040140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..07/04/09
ATTN...WFO...GGW...
&&
STATUS REPORT FOR WS 544
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-033-055-069-071-083-085-091-105-040140-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS GARFIELD MCCONE
PETROLEUM PHILLIPS RICHLAND
ROOSEVELT SHERIDAN VALLEY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 544
VALID 032335Z - 040040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..PETERS..07/03/09
ATTN...WFO...GGW...
&&
STATUS REPORT FOR WS 544
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-033-055-069-071-083-085-091-105-040040-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS GARFIELD MCCONE
PETROLEUM PHILLIPS RICHLAND
ROOSEVELT SHERIDAN VALLEY
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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
|
Low (10%)
|
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.
weather.gov 
