Severe Thunderstorm Warning 10, NWS Missoula, MT

709 
WWUS55 KMSO 090335
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
935 PM MDT WED JUN 8 2016

MTC023-039-077-093-090345-
/O.CON.KMSO.SV.W.0010.000000T0000Z-160609T0345Z/
DEER LODGE MT-GRANITE MT-POWELL MT-SILVER BOW MT-
935 PM MDT WED JUN 8 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM MDT
FOR NORTHEASTERN DEER LODGE...NORTHEASTERN GRANITE...SOUTHERN POWELL
AND NORTHEASTERN SILVER BOW COUNTIES...

AT 934 PM MDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM NEAR LINCOLN TO 10 MILES NORTH OF
GARRISON TO NEAR TOWNSEND...MOVING NORTHEAST AT 30 MPH.

REPORTS OF TREES KNOCKED OVER IN ANACONDA ALONG HIGHWAY 1 HAVE BEEN
REPORTED. 

LOCATIONS IMPACTED INCLUDE...
DEER LODGE...DRUMMOND...GARRISON...GOLDCREEK...BLOSSBURG...JENS...
HELMVILLE...HALL...BEARMOUTH...ELLISTON...NEW CHICAGO...
BROCK CREEK...AVON AND FINN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS
WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4642 11231 4639 11240 4633 11245 4634 11250
      4630 11257 4623 11260 4616 11251 4641 11290
      4668 11348 4671 11345 4693 11297 4696 11280
      4683 11279 4683 11254 4670 11253 4670 11241
      4666 11241 4665 11232 4660 11229 4657 11232
TIME...MOT...LOC 0334Z 228DEG 83KT 4690 11258 4668 11280 4640 11154 

$$

870 
WWUS55 KMSO 090343
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
943 PM MDT WED JUN 8 2016

MTC023-039-077-093-090353-
/O.EXP.KMSO.SV.W.0010.000000T0000Z-160609T0345Z/
DEER LODGE MT-GRANITE MT-POWELL MT-SILVER BOW MT-
943 PM MDT WED JUN 8 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DEER LODGE...
NORTHEASTERN GRANITE...SOUTHERN POWELL AND NORTHEASTERN SILVER BOW
COUNTIES WILL EXPIRE AT 945 PM MDT...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4642 11231 4639 11240 4633 11245 4634 11250
      4630 11257 4623 11260 4616 11251 4641 11290
      4668 11348 4671 11345 4693 11297 4696 11280
      4683 11279 4683 11254 4670 11253 4670 11241
      4666 11241 4665 11232 4660 11229 4657 11232
TIME...MOT...LOC 0336Z 244DEG 130KT 4690 11258 4668 11280 4640 11154 

$$

Area Forecast Discussion
National Weather Service Missoula MT
908 PM MDT WED JUN 8 2016

.DISCUSSION...The flash flood watch for the Municipal and Woodrat
burn scars in Clearwater and Idaho counties of Idaho has been
canceled. Further rain showers are possible this evening and
overnight, though not anticipating heavy rainfall occur. The
severe thunderstorm watch has also been canceled for portions
western Montana and and central Idaho.

&&

.AVIATION...Strong upper atmospheric forcing combined with an
unstable atmosphere will lead to scattered thunderstorms that have
potential for hail.

&&

.PREV DISCUSSION... /ISSUED 303 PM MDT WED JUN 8 2016/

UPDATE...Issued a flash flood watch for the camas prairie region
in west central Idaho for potential heavy rains with
thunderstorms.

AVIATION...Strong upper atmospheric forcing combined with an
unstable atmosphere will lead to scattered thunderstorms that have
potential for hail.

DISCUSSION...
l and damaging winds this afternoon and evening.
Current models give KMSO and KGPI the best chance of strong
storms, but KBTM could also see gusty winds as thunderstorms
develop after 08/2100z. Some towering cumulus are already visible
across the area, and this will likely become the first round of
storms. TAFs will continue to highlight the time frame of these
thunderstorms with VCTS and TS groups. Storms move from southwest
to northeast, and will bring gusty erratic winds when near
terminals. A cold front pushing through after 09/0200z will cause
a wind shift late this evening. By midnight, the most intense
storms are expected to have moved east of the Continental Divide.

PREV DISCUSSION... /ISSUED 225 PM MDT WED JUN 8 2016/

.Severe Thunderstorms Possible into tonight...

DISCUSSION...With current hot and relatively moist atmosphere
will come the chance for strong thunderstorms in southwest flow
ahead of low pressure which is currently spinning off the West
Coast. Current NWS Missoula social media posts (Facebook &
Twitter) highlight graphically the areas where the strongest
storms are expected, which is roughly along a line from Orofino,
ID to Glacier National Park, MT. But most of western Montana and
north central Idaho could see thunderstorms at some point into
tonight.

For those with outdoor plans into this evening, keep an eye on
the sky, and respect the intensity of these storms by finding a
safe location if storms approach. Not all locations will see
thunderstorms into tonight, but those that do may experience
strong to damaging winds, plenty of lightning, and even some large
hail directly under the storm cores. Stay weather aware while
outside.

&&

DISCUSSION...
A cold front is expected to shift across north central Idaho late
this afternoon and into western Montana during the evening. The
cold front will produce increasing winds, but also help enhance
some of the prior discussed thunderstorms.

A cooler air mass should cover the northern Rockies Thursday. The
atmosphere will remain moderately unstable from the Bitterroots
and Lemhi County eastward across southwest Montana.

As the main upper trough of low pressure over the Pacific
Northwest sharpens/strengthens on Friday, this should put west
central Montana, southwest Montana, and the Camas Prairie/Salmon
River Canyon eastward across the Clearwaters in a more favorable
area for a few afternoon thunderstorms. Isolated storms that
develop over southwest Montana could become strong.

Additional moisture&&

DISCUSSION...
 and showers are expected to stream northward
over north central Idaho and especially western Montana Saturday
and Saturday night as the main trough of low pressure shifts over
the area. A brief break in the showers may occur late Sunday into
Monday as weak high pressure returns.

Longer range guidance shows another relatively moist/unstable
period (in terms of shower/thunderstorm threat) next week.

AVIATION...Strong upper atmospheric forcing combined with an
unstable atmosphere will lead to scattered thunderstorms that have
potential for hail and damaging winds this afternoon and evening.
Current models give KMSO and KGPI the best chance of strong
storms, but KBTM could also see gusty winds as thunderstorms
develop after 08/2100z. Some towering cumulus are already visible
across the area, and this will likely become the first round of
storms. TAFs will continue to highlight the time frame of these
thunderstorms with VCTS and TS groups. Storms move from southwest
to northeast, and will bring gusty erratic winds when near
terminals. A cold front pushing through after 09/0200z will cause
a wind shift late this evening. By midnight, the most intense
storms are expected to have moved east of the Continental Divide.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
654 PM MDT WED JUN 8 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0556 PM     HAIL             2 WNW KALISPELL         48.21N 114.35W
06/08/2016  E1.00 INCH       FLATHEAD           MT   PUBLIC

            PHOTO WAS SENT TO US WITH COMPARISON TO A
            QUARTER. .

&&

NWS MISSOULA MT
IRIS SYSTEM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
708 PM MDT WED JUN 8 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 PM     HAIL             GREER                   46.39N 116.17W
06/08/2016  M2.00 INCH       CLEARWATER         ID   TRAINED SPOTTER

            VERY LARGE HAIL NEAR THE INTERSECTION OF US
            ROUTE 12 AND IDAHO HWY 11 IN GREER AROUND
            2:45 PM PDT THIS AFTERNOON.

&&

NWS MISSOULA MT
IRIS SYSTEM

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
712 PM MDT WED JUN 8 2016

MTZ002-090145-
WEST GLACIER REGION MT-
712 PM MDT WED JUN 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL FLATHEAD COUNTY
UNTIL 745 PM MDT...

AT 712 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 16
MILES NORTH OF WEST GLACIER...OR 37 MILES NORTH OF EVERGREEN...MOVING
NORTHEAST AT 35 MPH.

HALF INCH TO DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE
POSSIBLE WITH THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL
FLATHEAD COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT FOR
NORTHWESTERN MONTANA.

LAT...LON 4885 11399 4883 11400 4882 11396 4885 11391
      4884 11388 4886 11384 4884 11381 4884 11378
      4882 11376 4879 11377 4874 11371 4870 11371
      4863 11413 4877 11423 4889 11405
TIME...MOT...LOC 0112Z 229DEG 60KT 4874 11402

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
841 PM MDT WED JUN 8 2016

MTZ006-007-043-090345-
POTOMAC/SEELEY LAKE REGION MT-BITTERROOT/SAPPHIRE MOUNTAINS MT-
BUTTE/BLACKFOOT REGION MT-
841 PM MDT WED JUN 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DEER LODGE...
NORTHERN GRANITE...SOUTH CENTRAL POWELL AND SILVER BOW COUNTIES UNTIL
945 PM MDT...

AT 840 PM MDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM 15 MILES EAST OF STEVENSVILLE TO NEAR WEST
VALLEY TO NEAR DIVIDE. MOVEMENT WAS NORTHEAST AT 130 MPH.

WINDS IN EXCESS OF 40 MPH, FREQUENT LIGHTNING AND HEAVY RAIN WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
DEER LODGE...ANACONDA...BUTTE...SILVER BOW...PHILIPSBURG...
WALKERVILLE...GREGSON HOT SPRINGS...GALEN...WARM SPRINGS...
GARRISON...MAXVILLE...CRACKERVILLE...LOST CREEK...NISSLER...RAMSAY...
QUIGLEY...PRINCETON...OPPORTUNITY...JANNEY AND RACETRACK.

LAT...LON 4580 11231 4574 11244 4576 11250 4569 11256
      4623 11309 4656 11377 4669 11349 4658 11321
      4647 11268 4637 11241 4633 11245 4633 11254
      4624 11260 4618 11257 4618 11251 4613 11252
      4610 11247 4605 11248 4590 11241 4585 11243
TIME...MOT...LOC 0240Z 234DEG 111KT 4646 11378 4622 11299 4569 11270

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
843 PM MDT WED JUN 8 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0617 PM     HAIL             3 SSE COLUMBIA FALLS    48.34N 114.16W
06/08/2016  M1.00 INCH       FLATHEAD           MT   PUBLIC

            RECEIVED A REPORT OF 1 INCH OR LARGER HAIL
            FROM THE PUBLIC ON SOCIAL MEDIA.

&&

NWS MISSOULA MT
IRIS SYSTEM

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
905 PM MDT WED JUN 8 2016

IDZ006-MTZ005-006-090345-
SOUTHERN CLEARWATER MOUNTAINS ID-MISSOULA/BITTERROOT VALLEYS MT-
BITTERROOT/SAPPHIRE MOUNTAINS MT-
905 PM MDT WED JUN 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN IDAHO...NORTHWESTERN
RAVALLI AND WEST CENTRAL GRANITE COUNTIES UNTIL 945 PM MDT/845 PM
PDT/...

AT 903 PM MDT/803 PM PDT/...DOPPLER RADAR WAS TRACKING A STRONG
THUNDERSTORM 15 MILES SOUTHWEST OF HAMILTON...MOVING NORTH TO
NORTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH, LIGHTING AND BRIEF HEAVY RAIN WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HAMILTON...STEVENSVILLE...DARBY...WOODSIDE...FLORENCE...VICTOR...
PINESDALE...BELL CROSSING...CORVALLIS...CHARLOS HEIGHTS...
COMO AND GRANTSDALE.

LAT...LON 4581 11434 4604 11460 4665 11425 4665 11373
TIME...MOT...LOC 0303Z 229DEG 101KT 4635 11390