Alert archive / Montana / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 10, NWS Missoula, MT

July 6, 2009Granite County, Powell County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jul 6, 2009, 2:29 PM MDT for Granite County, Powell County, Montana. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 6, 2009, 2:29 PM MDT (20:29 UTC)
Expired: Jul 6, 2009, 3:15 PM MDT
In force: 46 min
Issued by: NWS Missoula, MT
Area: Storm-based polygon

Counties Granite County, MT, Powell County, MT

The radar

The Missoula radar (KMSX), 91 km from the middle of the area, began a volume at 20:33 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 6, 1:33 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 8.5 hours before the alert went out and 212 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 33 J/kg
Mixed-layer CIN: -256 J/kg
Mixed-layer LCL: 1575 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS55 KMSO 062029
SVRMSO
MTC039-077-062130-
/O.NEW.KMSO.SV.W.0010.090706T2029Z-090706T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
229 PM MDT MON JUL 6 2009

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN GRANITE COUNTY IN WEST CENTRAL MONTANA...
  SOUTHERN POWELL COUNTY IN WEST CENTRAL MONTANA...

* UNTIL 330 PM MDT.

* AT 228 PM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE. 
  THIS STORM WAS LOCATED NEAR PHILIPSBURG...OR ABOUT 21 MILES
  NORTHWEST OF ANACONDA...AND WAS MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...BROCK CREEK...GARRISON...GOLDCREEK...
  HALL...JENS...MAXVILLE...NEW CHICAGO...PHILIPSBURG AND PRINCETON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL IS LIKELY WITH THIS SEVERE THUNDERSTORM. DAMAGING WINDS
ARE POSSIBLE...ALONG WITH FREQUENT LIGHTNING AND HEAVY RAIN. FOR YOUR
PROTECTION...GO INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE CAUGHT
OUTSIDE...MOVE TO A WELL PROTECTED AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT MONDAY
EVENING FOR EAST CENTRAL IDAHO AND WEST CENTRAL MONTANA.

&&

LAT...LON 4679 11296 4651 11256 4622 11329 4637 11344
TIME...MOT...LOC 2029Z 235DEG 29KT 4635 11324

$$

ZUMPFE

2 follow-up statements

000 
WWUS55 KMSO 062048
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
248 PM MDT MON JUL 6 2009

MTC039-077-062130-
/O.CON.KMSO.SV.W.0010.000000T0000Z-090706T2130Z/
GRANITE MT-POWELL MT-
248 PM MDT MON JUL 6 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM MDT
FOR SOUTHERN POWELL AND EASTERN GRANITE COUNTIES...

* AT 242 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE         
  THUNDERSTORM PRODUCING HAIL UP TO ONE INCH IN DIAMETER NEAR        
  GEORGETOWN LAKE. THIS STORM WAS LOCATED NEAR PRINCETON...OR ABOUT  
  18 MILES WEST OF DEER LODGE...AND WAS MOVING NORTHEAST AT 35 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT MONDAY
EVENING FOR EAST CENTRAL IDAHO AND WEST CENTRAL MONTANA.

&&

LAT...LON 4679 11296 4651 11256 4622 11329 4637 11344
TIME...MOT...LOC 2046Z 235DEG 29KT 4642 11306

$$

ZUMPFE

000 
WWUS55 KMSO 062115
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
315 PM MDT MON JUL 6 2009

MTC039-077-062125-
/O.CAN.KMSO.SV.W.0010.000000T0000Z-090706T2130Z/
GRANITE MT-POWELL MT-
315 PM MDT MON JUL 6 2009

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN POWELL AND EASTERN
GRANITE COUNTIES IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT MONDAY
EVENING FOR EAST CENTRAL IDAHO AND WEST CENTRAL MONTANA.

LAT...LON 4679 11296 4651 11256 4622 11329 4637 11344
TIME...MOT...LOC 2115Z 235DEG 29KT 4655 11279

$$

ZUMPFE

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 6, 2:26 PM MDT, 3 minutes earlier.

Area forecast discussion, Jul 6, 2:26 PM MDT, 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
226 PM MDT MON JUL 6 2009

.DISCUSSION...AN UPPER LEVEL TROUGH WILL BE THE MAIN WEATHER
FEATURE OVER THE INTERMOUNTAIN REGION FOR MUCH OF THE WEEK. REST
OF THIS AFTERNOON INTO EARLY EVENING...SCATTERED TO NUMEROUS
THUNDERSTORMS...SOME SEVERE WILL CONTINUE TO IMPACT LEMHI COUNTY
IDAHO...AND SOUTHWEST MONTANA THROUGH 03Z. THE ATMOSPHERE WILL
STABILIZE BEHIND THE COLD FRONT ASSOCIATED WITH THIS UPPER TROUGH
OVERNIGHT. UPPER LEVEL SOUTHWEST FLOW WILL DOMINATE THE REGION
AGAIN TUESDAY FOR ANOTHER ROUND OF AFTERNOON AND EVENING SHOWERS
AND THUNDERSTORMS. HOWEVER... WITH A COOLER AIRMASS IN PLACE AND
ABSENCE OF SURFACE FRONT AND UPPER JET...ONLY ISOLATED TO
SCATTERED THUNDERSTORMS ARE EXPECTED.

WEDNESDAY THE UPPER TROUGH WILL BE OVER THE REGION FOR ANOTHER
ROUND OF WIDESPREAD SHOWERS. AT THIS TIME...CENTRAL CLEARWATER
MOUNTAINS OF IDAHO...CENTRAL AND NORTHWEST MONTANA LOOK TO
RECEIVED THE MOST PRECIPITATION AS THIS TROUGH REMAINS ALONG THE
MONTANA IDAHO BORDER. WEDNESDAY IS ALSO EXPECTED TO BE THE COOLEST
DAY FROM THIS SAME TROUGH.

BEYOND THURSDAY...THE MODELS ARE STRUGGLING WITH SOUTHWEST FLOW OR
A WEAK TROUGH TO END THE WEEK INTO THE WEEKEND. HAVE MADE LITTLE
CHANGES TO GOING FORECAST WHICH TREND TOWARD CLIMATOLOGICAL
CHANCES OF PRECIPITATION AND NEAR NORMAL TEMPERATES.

&&

.AVIATION...SCATTERED TO NUMEROUS THUNDERSTORMS WITH THE POTENTIAL
FOR LARGE HAIL AND HEAVY RAIN WILL IMPACT OUR SOUTHERN AIRFIELDS
THROUGH EARLY EVENING. LOWERED VISIBILITY FROM HEAVY RAIN WITH
PONDING OF WATER ON RUNWAYS IS EXPECTED AT KSMN AND KBTM THROUGH
00Z. FURTHER NORTH...SCATTERED THUNDERSTORMS WITH MODERATE RAIN
AND SMALL HAIL WITH BRIEF WIND GUSTS WILL IMPACT CENTRAL AND
NORTHERN MONTANA AIRFIELDS THROUGH 00Z. IMPROVING CONDITIONS ARE
EXPECTED AFTER 03Z WITH PARTIAL CLEARING AND DECREASING WINDS
THROUGH 18Z TUESDAY.

&&

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

DISCUSSION/AVIATION...MEAD

Hazardous weather outlook, Jul 6, 4:51 AM MDT, 9 hours 38 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
451 AM MDT MON JUL 6 2009

MTZ001>007-043-070000-
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
FLATHEAD/MISSION VALLEYS-LOWER CLARK FORK REGION-
MISSOULA/BITTERROOT VALLEYS-BITTERROOT/SAPPHIRE MOUNTAINS-
BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION-
451 AM MDT MON JUL 6 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
MONTANA AND WEST CENTRAL MONTANA.

.DAY ONE...TODAY AND TONIGHT

ATMOSPHERIC CONDITIONS WILL BE FAVORABLE EARLY THIS AFTERNOON FOR
THE DEVELOPMENT OF SEVERE THUNDERSTORMS OVER THE AREA. THE BIGGEST
THREATS FROM THESE STORMS WILL BE DAMAGING WIND GUSTS IN EXCESS OF
60 MPH AND HAIL GREATER THAN 1 INCH IN DIAMETER. THE TIME FRAME OF
GREATEST THREAT WILL BE BETWEEN NOON AND 4 PM THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW AT THIS
TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE STRONGLY ENCOURAGED TO REPORT SIGNIFICANT
WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

IDZ005>010-070000-
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION-
WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-
451 AM MDT MON JUL 6 2009 /351 AM PDT MON JUL 6 2009/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IDAHO.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS HAVE ALREADY BEGUN THIS MORNING AND WILL
CONTINUE THROUGH THE EARLY AFTERNOON HOURS AS A COLD FRONT
APPROACHES THE REGION. THE ATMOSPHERE WILL BECOME INCREASINGLY
UNSTABLE AND SUPPORTIVE OF STRONG THUNDERSTORMS UNTIL AFTER THE
FRONT PASSES. ALTHOUGH MOST CONVECTION WILL BE CAPABLE OF
PRODUCING WIND GUSTS TO 50 MPH AND HAIL UP TO THREE QUARTERS OF AN
INCH IN DIAMETER...ISOLATED SEVERE THUNDERSTORMS CANNOT BE RULED
OUT...CAPABLE OF PRODUCING WIND GUSTS IN EXCESS OF 60 MPH AND HAIL
LARGER THAN ONE INCH.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW AT THIS
TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jul 6, 1:11 PM MDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
111 PM MDT MON JUL 06 2009

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

1256 PM     HAIL             SALMON                  45.18N 113.89W
07/06/2009  E0.50 INCH       LEMHI              ID   TRAINED SPOTTER

            SEVERAL WEATHER SPOTTERS REPORTED 1/2 TO 3/4 INCH
            DIAMETER HAIL IN THE SALMON AREA.

&&

FELSCH

Special weather statement, Jul 6, 1:24 PM MDT, 1 hour 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
124 PM MDT MON JUL 6 2009

MTZ007-062000-
BUTTE/BLACKFOOT REGION-
124 PM MDT MON JUL 6 2009

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN POWELL COUNTY UNTIL
200 PM MDT...

AT 123 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR GARRISON...OR 5 MILES NORTH OF DEER LODGE...
MOVING NORTHEAST AT 25 MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...GARRISON AND AVON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY
AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL
PROTECTED AREA.

IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR
LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

&&

LAT...LON 4635 11274 4647 11293 4677 11260 4673 11252
      4670 11252 4670 11247 4663 11235
TIME...MOT...LOC 1924Z 220DEG 22KT 4648 11275

ZUMPFE

Special weather statement, Jul 6, 1:27 PM MDT, 1 hour 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
127 PM MDT MON JUL 6 2009

IDZ009-010-062000-
EASTERN LEMHI COUNTY-WESTERN LEMHI COUNTY-
127 PM MDT MON JUL 6 2009

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LEMHI COUNTY UNTIL 200 PM
MDT...

AT 126 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES SOUTH OF SALMON...MOVING NORTHEAST AT 25
MPH.

HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...SALMON...BAKER AND
CARMEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF THREATENING WEATHER APPROACHES YOUR AREA...GO INDOORS AND STAY
AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL
PROTECTED AREA.

IN ADDITION...THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR
LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

&&

LAT...LON 4498 11385 4508 11406 4541 11377 4539 11373
      4532 11373 4529 11368 4524 11366 4519 11360
TIME...MOT...LOC 1927Z 217DEG 22KT 4510 11387

ZUMPFE

Local storm report, Jul 6, 1:31 PM MDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
131 PM MDT MON JUL 06 2009

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

1256 PM     HAIL             SALMON                  45.18N 113.89W
07/06/2009  E0.50 INCH       LEMHI              ID   TRAINED SPOTTER

            SEVERAL WEATHER SPOTTERS REPORTED 1/2 TO 3/4 INCH
            DIAMETER HAIL IN THE SALMON AREA.

0100 PM     HAIL             1 SW DARBY              46.01N 114.19W
07/06/2009  E0.25 INCH       RAVALLI            MT   PARK/FOREST SRVC

            WEST FORK/DARBY RANGER STATION REPORTED PEA SIZE HAIL ONE
            INCH DEEP.

0100 PM     HAIL             CONNER                  45.93N 114.12W
07/06/2009  M1.00 INCH       RAVALLI            MT   TRAINED SPOTTER

0100 PM     HAIL             6 SW CONNER             45.87N 114.21W
07/06/2009  M1.75 INCH       RAVALLI            MT   STORM CHASER

            GOLF BALL SIZED HAIL ACCUMULATED TO 1.5 INCH DEPTH ON
            GROUND.

&&

FELSCH

Local storm report, Jul 6, 2:02 PM MDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
202 PM MDT MON JUL 06 2009

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

1256 PM     HAIL             SALMON                  45.18N 113.89W
07/06/2009  E0.50 INCH       LEMHI              ID   TRAINED SPOTTER

            SEVERAL WEATHER SPOTTERS REPORTED 1/2 TO 3/4 INCH
            DIAMETER HAIL IN THE SALMON AREA.

0100 PM     HAIL             1 SW DARBY              46.01N 114.19W
07/06/2009  E0.25 INCH       RAVALLI            MT   PARK/FOREST SRVC

            WEST FORK/DARBY RANGER STATION REPORTED PEA SIZE HAIL ONE
            INCH DEEP.

0100 PM     HAIL             CONNER                  45.93N 114.12W
07/06/2009  M1.00 INCH       RAVALLI            MT   TRAINED SPOTTER

0100 PM     HAIL             6 SW CONNER             45.87N 114.21W
07/06/2009  M1.75 INCH       RAVALLI            MT   STORM CHASER

            GOLF BALL SIZED HAIL ACCUMULATED TO 1.5 INCH DEPTH ON
            GROUND.

0200 PM     HAIL             PHILIPSBURG             46.33N 113.29W
07/06/2009  E0.75 INCH       GRANITE            MT   TRAINED SPOTTER

            REPORT OF DIME SIZE HAIL IN PHILIPSBURG

&&

FELSCH

Local storm report, Jul 6, 2:25 PM MDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
225 PM MDT MON JUL 06 2009

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

1256 PM     HAIL             SALMON                  45.18N 113.89W
07/06/2009  E0.50 INCH       LEMHI              ID   TRAINED SPOTTER

            SEVERAL WEATHER SPOTTERS REPORTED 1/2 TO 3/4 INCH
            DIAMETER HAIL IN THE SALMON AREA.

0100 PM     HAIL             1 SW DARBY              46.01N 114.19W
07/06/2009  E0.25 INCH       RAVALLI            MT   PARK/FOREST SRVC

            WEST FORK/DARBY RANGER STATION REPORTED PEA SIZE HAIL ONE
            INCH DEEP.

0100 PM     HAIL             CONNER                  45.93N 114.12W
07/06/2009  M1.00 INCH       RAVALLI            MT   TRAINED SPOTTER

0100 PM     HAIL             6 SW CONNER             45.87N 114.21W
07/06/2009  M1.75 INCH       RAVALLI            MT   STORM CHASER

            GOLF BALL SIZED HAIL ACCUMULATED TO 1.5 INCH DEPTH ON
            GROUND.

0200 PM     HAIL             PHILIPSBURG             46.33N 113.29W
07/06/2009  E0.75 INCH       GRANITE            MT   TRAINED SPOTTER

            REPORT OF DIME SIZE HAIL IN PHILIPSBURG

0222 PM     HAIL             PHILIPSBURG             46.33N 113.29W
07/06/2009  M1.00 INCH       GRANITE            MT   TRAINED SPOTTER

            WEATHER SPOTTER REPORTED QUARTER SIZE HAIL IN
            PHILIPSBURG. 8 MILES NORTHWEST OF PHILIPSBURG,CAMPER
            REPORTED 1/2 INCH DIAMETER HAIL AT 5500 FEET.

&&

FELSCH

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 6, 12:56 PM MDT	Severe Thunderstorm Warning	MSO	Ravalli	49 min
Jul 6, 1:08 PM MDT	Special Weather Statement	MSO	Silver Bow	37 min
Jul 6, 1:24 PM MDT	Special Weather Statement	MSO	Powell	36 min
Jul 6, 1:37 PM MDT	Severe Thunderstorm Warning	MSO	Powell	23 min
Jul 6, 1:45 PM MDT	Severe Thunderstorm Warning	MSO	Deer Lodge, Granite, Powell, Ravalli	45 min
Jul 6, 2:07 PM MDT	Severe Thunderstorm Warning	MSO	Powell	38 min
Jul 6, 3:03 PM MDT	Severe Thunderstorm Warning	MSO	Powell	27 min

Nearby

Severe Thunderstorm Warnings in Montana, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.