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
220 PM MDT Fri Jun 14 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
central Montana
* Effective this Friday afternoon and evening from 220 PM until
800 PM MDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...An isolated supercell thunderstorm appears likely to
maintain strength several more hours, and may impact the Great Falls
area between 3 PM and 5 PM MDT, with a continuing risk for severe
hail and strong surface gusts.
The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 35 miles north of Great
Falls MT to 20 miles south southwest of Lewistown MT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
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 355...
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 450. Mean storm motion vector
31030.
...Kerr
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 356
NWS Storm Prediction Center Norman OK
220 PM MDT Fri Jun 14 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
central Montana
* Effective this Friday afternoon and evening from 220 PM until
800 PM MDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...An isolated supercell thunderstorm appears likely to
maintain strength several more hours, and may impact the Great Falls
area between 3 PM and 5 PM MDT, with a continuing risk for severe
hail and strong surface gusts.
The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 35 miles north of Great
Falls MT to 20 miles south southwest of Lewistown MT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
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 355...
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 450. Mean storm motion vector
31030.
...Kerr
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 MT 142020Z - 150200Z
AXIS..55 STATUTE MILES EAST AND WEST OF LINE..
35N GTF/GREAT FALLS MT/ - 20SSW LWT/LEWISTOWN MT/
..AVIATION COORDS.. 50NM E/W /32N GTF - 16S LWT/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 31030.
LAT...LON 47971018 46770847 46771079 47971255
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 #3 ON WW 356
VALID 142335Z - 150040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1063
..ELLIOTT..06/14/19
ATTN...WFO...TFX...
&&
STATUS REPORT FOR WS 356
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC015-027-045-150040-
MT
. MONTANA COUNTIES INCLUDED ARE
CHOUTEAU FERGUS JUDITH BASIN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 356
VALID 142245Z - 142340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 WNW 3HT
TO 40 E GTF TO 15 WSW HVR.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1063
..ELLIOTT..06/14/19
ATTN...WFO...TFX...
&&
STATUS REPORT FOR WS 356
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC015-027-045-142340-
MT
. MONTANA COUNTIES INCLUDED ARE
CHOUTEAU FERGUS JUDITH BASIN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 356
VALID 142135Z - 142240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..ELLIOTT..06/14/19
ATTN...WFO...TFX...
&&
STATUS REPORT FOR WS 356
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC013-015-027-045-099-142240-
MT
. MONTANA COUNTIES INCLUDED ARE
CASCADE CHOUTEAU FERGUS
JUDITH BASIN TETON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (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 (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (50%)
|
Probability of 1 or more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
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.
weather.gov 
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