Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 302
NWS Storm Prediction Center Norman OK
505 PM MDT Wed Jun 24 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest to north-central Montana
* Effective this Wednesday afternoon and evening from 505 PM
until 1100 PM MDT.
* Primary threats include...
Isolated damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Severe thunderstorms should move into the western part of
the watch from the Rockies, with potential for upscale clustering
and cold-pool generation, as well as potentially intensifying from a
band of convection astride the international border between Cut Bank
and Havre. Severe gusts will be the main concern, though isolated
large hail is possible.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 45 miles west southwest
of Cut Bank MT to 45 miles east southeast of Havre MT. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU2).
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 300...WW 301...
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
27035.
...Edwards
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 302
NWS Storm Prediction Center Norman OK
505 PM MDT Wed Jun 24 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest to north-central Montana
* Effective this Wednesday afternoon and evening from 505 PM
until 1100 PM MDT.
* Primary threats include...
Isolated damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Severe thunderstorms should move into the western part of
the watch from the Rockies, with potential for upscale clustering
and cold-pool generation, as well as potentially intensifying from a
band of convection astride the international border between Cut Bank
and Havre. Severe gusts will be the main concern, though isolated
large hail is possible.
The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 45 miles west southwest
of Cut Bank MT to 45 miles east southeast of Havre MT. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU2).
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 300...WW 301...
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
27035.
...Edwards
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2
WW 302 SEVERE TSTM MT 242305Z - 250500Z
AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
45WSW CTB/CUT BANK MT/ - 45ESE HVR/HAVRE MT/
..AVIATION COORDS.. 45NM N/S /37ENE FCA - 39ESE HVR/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
LAT...LON 49091329 49020887 47570887 47641329
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 302 Status Report Messages:
STATUS REPORT #4 ON WW 302
VALID 250405Z - 250500Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 N LWT TO
40 NNE HVR.
WW 302 WILL BE ALLOWED TO EXPIRE NO LATER THAN 250500Z
BUT MAY BE CANCELLED EARLIER AT THE DISCRETION
OF THE NWS GREAT FALLS FORECAST OFFICE. STORMS HAVE
WEAKENED CONSIDERABLY IN THE PAST 30-60 MINUTES
WITH A LESSENING SEVERE RISK.
..SMITH..06/25/20
ATTN...WFO...TFX...
&&
STATUS REPORT FOR WS 302
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC005-250500-
MT
. MONTANA COUNTIES INCLUDED ARE
BLAINE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 302
VALID 250315Z - 250400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NW LWT TO
35 WSW HVR TO 40 NNW HVR.
..SMITH..06/25/20
ATTN...WFO...TFX...
&&
STATUS REPORT FOR WS 302
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC005-015-041-250400-
MT
. MONTANA COUNTIES INCLUDED ARE
BLAINE CHOUTEAU HILL
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 302
VALID 250220Z - 250330Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
AROUND 0330Z, THE INITIAL CLEARANCE OF COUNTIES FROM THE WATCH
MAY BEGIN TO OCCUR DEPENDENT ON THE CONVECTIVE TRENDS AND
THE AMOUNT OF CONVECTIVE OVERTURNING BY THEN.
..SMITH..06/25/20
ATTN...WFO...TFX...
&&
STATUS REPORT FOR WS 302
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC005-015-035-041-051-073-099-101-250330-
MT
. MONTANA COUNTIES INCLUDED ARE
BLAINE CHOUTEAU GLACIER
HILL LIBERTY PONDERA
TETON TOOLE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 302
VALID 250040Z - 250130Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SMITH..06/25/20
ATTN...WFO...TFX...
&&
STATUS REPORT FOR WS 302
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MTC005-015-035-041-051-073-099-101-250130-
MT
. MONTANA COUNTIES INCLUDED ARE
BLAINE CHOUTEAU GLACIER
HILL LIBERTY PONDERA
TETON TOOLE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
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
|
Low (20%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
Mod (50%)
|
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.
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