Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 269
NWS Storm Prediction Center Norman OK
215 PM MDT Tue Jul 10 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central into northeastern Montana
* Effective this Tuesday afternoon and evening from 215 PM until
900 PM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2.5
inches in diameter likely
A tornado or two possible
SUMMARY...Thunderstorms are developing near and just northeast of
the higher terrain in south central Montana, and other storm
development is expected the next couple of hours into north central
Montana. The storm environment will favor supercells initially with
the potential to produce isolated very large hail and damaging
winds. Some clustering of convection is probable by this evening,
with an increasing threat for damaging winds. An isolated tornado
cannot be ruled out due to storm interactions with a lingering
boundary across northeastern Montana this evening.
The severe thunderstorm watch area is approximately along and 95
statute miles north and south of a line from 65 miles west northwest
of Lewistown MT to 10 miles east southeast of Sidney MT. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
26030.
...Thompson
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 269
NWS Storm Prediction Center Norman OK
215 PM MDT Tue Jul 10 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central into northeastern Montana
* Effective this Tuesday afternoon and evening from 215 PM until
900 PM MDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2.5
inches in diameter likely
A tornado or two possible
SUMMARY...Thunderstorms are developing near and just northeast of
the higher terrain in south central Montana, and other storm
development is expected the next couple of hours into north central
Montana. The storm environment will favor supercells initially with
the potential to produce isolated very large hail and damaging
winds. Some clustering of convection is probable by this evening,
with an increasing threat for damaging winds. An isolated tornado
cannot be ruled out due to storm interactions with a lingering
boundary across northeastern Montana this evening.
The severe thunderstorm watch area is approximately along and 95
statute miles north and south of a line from 65 miles west northwest
of Lewistown MT to 10 miles east southeast of Sidney MT. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
26030.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 269 SEVERE TSTM MT 102015Z - 110300Z
AXIS..95 STATUTE MILES NORTH AND SOUTH OF LINE..
65WNW LWT/LEWISTOWN MT/ - 10ESE SDY/SIDNEY MT/
..AVIATION COORDS.. 85NM N/S /27E GTF - 35SSW ISN/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26030.
LAT...LON 48771075 49020400 46270400 46021075
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 269 Status Report Messages:
STATUS REPORT #5 ON WW 269
VALID 110235Z - 110340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SSW MLS
TO 30 S OLF TO 70 NNE OLF.
..BROYLES..07/11/18
ATTN...WFO...TFX...GGW...BYZ...
&&
STATUS REPORT FOR WS 269
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC083-085-091-110340-
MT
. MONTANA COUNTIES INCLUDED ARE
RICHLAND ROOSEVELT SHERIDAN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 269
VALID 110155Z - 110240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 65 WSW MLS
TO 50 S GGW TO 65 NNE GGW.
..BROYLES..07/11/18
ATTN...WFO...TFX...GGW...BYZ...
&&
STATUS REPORT FOR WS 269
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-055-083-085-087-091-110240-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS MCCONE RICHLAND
ROOSEVELT ROSEBUD SHERIDAN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 269
VALID 110040Z - 110140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NW BIL TO
65 SW GGW TO 75 NNW GGW.
..BROYLES..07/11/18
ATTN...WFO...TFX...GGW...BYZ...
&&
STATUS REPORT FOR WS 269
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC019-033-055-065-083-085-087-091-103-105-111-110140-
MT
. MONTANA COUNTIES INCLUDED ARE
DANIELS GARFIELD MCCONE
MUSSELSHELL RICHLAND ROOSEVELT
ROSEBUD SHERIDAN TREASURE
VALLEY YELLOWSTONE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 269
VALID 102245Z - 102340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NW LVM TO
55 NNE LWT TO 50 NE HVR.
..BROYLES..07/10/18
ATTN...WFO...TFX...GGW...BYZ...
&&
STATUS REPORT FOR WS 269
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC005-019-027-033-037-055-065-067-069-071-083-085-087-091-095-
097-103-105-107-111-102340-
MT
. MONTANA COUNTIES INCLUDED ARE
BLAINE DANIELS FERGUS
GARFIELD GOLDEN VALLEY MCCONE
MUSSELSHELL PARK PETROLEUM
PHILLIPS RICHLAND ROOSEVELT
ROSEBUD SHERIDAN STILLWATER
SWEET GRASS TREASURE VALLEY
WHEATLAND YELLOWSTONE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 269
VALID 102130Z - 102240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..07/10/18
ATTN...WFO...TFX...GGW...BYZ...
&&
STATUS REPORT FOR WS 269
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC005-007-013-015-019-027-031-033-037-041-045-055-059-065-067-
069-071-083-085-087-091-095-097-103-105-107-111-102240-
MT
. MONTANA COUNTIES INCLUDED ARE
BLAINE BROADWATER CASCADE
CHOUTEAU DANIELS FERGUS
GALLATIN GARFIELD GOLDEN VALLEY
HILL JUDITH BASIN MCCONE
MEAGHER MUSSELSHELL PARK
PETROLEUM PHILLIPS RICHLAND
ROOSEVELT ROSEBUD SHERIDAN
STILLWATER SWEET GRASS TREASURE
VALLEY WHEATLAND YELLOWSTONE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (60%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (60%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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.
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