Hail and Damaging Winds in Montana, June 25, 2007

Name: Hail and Damaging Winds in Montana, June 25, 2007
Start: 2007-06-25T07:24
End: 2007-06-25T15:35
Location: Montana

June 25, 2007 · NWS TFX · 7 events in 5 counties and zones

Severe thunderstorms developed along the Hi-Line on the 25th. Hail as large as ping pong balls was reported as well as wind gusts in excess of 60 mph.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 7

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS TFX wrote it up.

Severe thunderstorms developed along the Hi-Line on the 25th. Hail as large as ping pong balls was reported as well as wind gusts in excess of 60 mph.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Great Falls, MT wrote its last area forecast discussion before the first event at Jun 25, 4:35 AM MST, 2 hours 49 minutes earlier.

Area forecast discussion, Jun 25, 4:35 AM MST, 2 hours 49 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
535 AM MDT MON JUN 25 2007

.DISCUSSION...

TODAY THROUGH WEDNESDAY...THE UPPER LEVEL TROUGH OVER THE PACIFIC
NORTHWEST WILL CONTINUE THE SLIGHTLY UNSTABLE SOUTHWEST FLOW ALOFT
OVER SOUTHWEST AND NORTH CENTRAL MONTANA THIS MORNING. THIS WILL
BRING NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS TO NORTH CENTRAL
MONTANA DURING THE MORNING. SOUTHWEST MONTANA WILL BE ON THE
PERIPHERY OF THIS TROUGH AND WILL ONLY HAVE SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. THE TROUGH WILL LIFT NORTH THROUGH
NORTHWEST AND NORTH CENTRAL MONTANA INTO SOUTHERN CANADA DURING
THE AFTERNOON...PROVIDING A STRONG WESTERLY DOWNSLOPE FLOW TO THE
AREA. THIS WILL BRING STRONG WESTERLY DOWNSLOPE WINDS TO THE AREA
DURING THE AFTERNOON AND EVENING...AS WELL AS DECREASING SHOWERS
AND THUNDERSTORMS. TEMPERATURES WILL BE 5 TO 10 DEGREES COOLER
THAN YESTERDAY DUE TO THE TROUGH PASSAGE. AN UPPER LEVEL RIDGE
WILL MOVE INTO THE AREA FOR TONIGHT THROUGH WEDNESDAY...WHICH WILL
BRING MUCH DRIER CONDITIONS AND LIGHTER WINDS TO THE AREA.
TEMPERATURES WILL WARM TO ABOVE NORMAL LEVELS BY WEDNESDAY. THE
AIRMASS WILL BECOME SLIGHTLY UNSTABLE AGAIN ON WEDNESDAY WITH THE
WARMING TEMPERATURES...WHICH WILL CAUSE A SLIGHT CHANCE OF
THUNDERSTORMS OVER THE AREA DURING THE AFTERNOON.  COULSTON

WEDNESDAY NIGHT THROUGH SATURDAY NIGHT...MODELS CONTINUE TO IN
GOOD AGREEMENT KEEPING AN UPPER LEVEL RIDGE OVER EASTERN MONTANA
THROUGH THE ENTIRE MID RANGE PERIOD. AN UPPER LEVEL TROUGH
DEEPENS OVER THE EASTERN PACIFIC AND ATTEMPTS TO MOVE INLAND BY
SATURDAY...BUT WILL MAKE LITTLE HEADWAY AS THE UPPER RIDGE STANDS
FIRM. SCENARIO KEEPS MY ENTIRE FORECAST AREA UNDER AN UNSTABLE
SOUTHWEST FLOW ALOFT FOR A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS WITH TEMPERATURES REMAINING WELL ABOVE SEASONAL
NORMALS. GOING FORECAST CONTINUES TO LOOK REASONABLE SO HAVE MADE
ONLY MINOR TWEAKS ALONG BORDERS TO MATCH UP WITH NEIGHBORING
OFFICES. MPJ

SUNDAY AND MONDAY...LATEST MODELS IN GOOD AGREEMENT THROUGH THE
EXTENDED. A SLOW MOVING LOW PRESSURE TROUGH IS POISED TO MOVE
INTO THE PACIFIC NORTHWEST OVER THE WEEKEND. PACIFIC MOISTURE IN
THE SOUTHWEST FLOW WILL PROVIDE A CHANCE FOR SHOWERS AND
THUNDERSTORMS FOR THE CWA. TEMPERATURES WILL BE SLIGHTLY ABOVE
NORMAL. SAUCIER

&&

.AVIATION...
UPDATED 1135Z.
AN UPPER LEVEL TROUGH MOVES EAST-NORTHEAST OVER THE NORTHERN HALF OF
MONTANA TODAY AND TONIGHT. SCATTERED TO NUMEROUS SHOWERS AND
THUNDERSTORMS WILL MOVE ACROSS NORTH CENTRAL MONTANA THROUGH 18Z.
VFR CONDITIONS WILL PREVAIL...WITH AREAS MVFR AND LOCAL IFR
CONDITIONS DUE TO LOW CLOUDS. A SURFACE COLD FRONT WILL MOVE EAST
ACROSS THE FORECAST AREA DURING THE DAY WITH GUSTY WEST WINDS
EXPECTED BEHIND THE FRONT. WINDS DIMINISH OVERNIGHT WITH VFR
CONDITIONS PREVAILING IN MOSTLY CLEAR SKIES. MPJ

&&

.PRELIMINARY POINT TEMPS/POPS...
GTF  67  41  76  48 /  60  10   0   0
CTB  64  40  74  45 /  70  10   0   0
HLN  72  39  80  50 /  50  10   0   0
BZN  76  37  80  45 /  10  10   0   0
WEY  70  33  73  40 /   0   0   0   0
DLN  74  36  79  44 /  20   0  10  10
HVR  67  44  73  49 /  60  20   0   0
LWT  68  41  74  46 /  20  10   0   0

&&

.TFX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...COULSTON
LONG TERM...MPJ/SAUCIER
AVIATION...BRUSDA

WEATHER.GOV/GREATFALLS

Hazardous weather outlook, Jun 25, 4:51 AM MST, 2 hours 33 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE GREAT FALLS MT
551 AM MDT MON JUN 25 2007

MTZ009-010-044>046-048-049-261300-
NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-TOOLE-LIBERTY-
EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-
551 AM MDT MON JUN 25 2007

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

.DAY ONE...TODAY AND TONIGHT

STRONG WESTERLY DOWNSLOPE WINDS OF 25 TO 35 MPH WITH GUSTS UP TO
50 MPH WILL DEVELOP ALONG THE ROCKY MOUNTAIN FRONT AND ADJACENT
PLAINS THIS AFTERNOON. THESE WINDS WILL THEN DECREASE THIS
EVENING AND OVERNIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER TUESDAY THROUGH
SUNDAY IS LOW.

.SPOTTER INFORMATION STATEMENT...

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

MTZ008-011>015-047-050>055-261300-
BEAVERHEAD-HILL-CASCADE-CHOUTEAU-
CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-BLAINE-JUDITH BASIN-
FERGUS-JEFFERSON-BROADWATER-MEAGHER-GALLATIN-
551 AM MDT MON JUN 25 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, Jun 25, 5:51 AM MST, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
651 AM MDT MON JUN 25 2007

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

0645 AM     HAIL             SUN PRAIRIE             47.54N 111.48W
06/25/2007  M0.25 INCH       CASCADE            MT   TRAINED SPOTTER

&&

SAUCIER

Local storm report, Jun 25, 6:02 AM MST, 1 hour 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
702 AM MDT MON JUN 25 2007

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

0650 AM     HAIL             2 W VAUGHN              47.56N 111.59W
06/25/2007  E0.50 INCH       CASCADE            MT   TRAINED SPOTTER

&&

SAUCIER

The radar

The Great Falls radar (KTFX), 119 km away, was scanning. The volume nearest the first event began at 14:24 UTC.

Open the radar archive at this moment

Event by event

5 hail, 2 thunderstorm wind. Local standard time, as filed.

Hail, Chouteau

When: June 25, 7:24 AM MST
Where: Chouteau County, 4 mi W of Big Sandy
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 48.180, -110.207

A severe thunderstorm dropped 1 inch diameter hail at Big Sandy 4W.

Hail, Hill

When: June 25, 7:35 AM MST
Where: Hill County, 5 mi ENE of Oscar
Measured: 1.5 in hail
Reported by: Trained Spotter
Coordinates: 48.478, -109.519

A severe thunderstorm dropped 1.5 inch diameter hail at Rocky Boy 5ENE.

Hail, Blaine

When: June 25, 7:50 AM MST
Where: Blaine County, 0.83 mi NNE of Lloyd
Measured: 0.88 in hail
Reported by: Law Enforcement
Coordinates: 48.290, -109.360

A severe thunderstorm dropped .88 inch diameter hail at Lloyd.

Hail, Blaine

When: June 25, 8:38 AM MST
Where: Blaine County, 11 mi NNE of Harlem
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 48.677, -108.688

A severe thunderstorm dropped .75 icnh diameter hail at Harlem 11NNE.

Hail, Blaine

When: June 25, 8:40 AM MST
Where: Blaine County, 4 mi W of Harlem
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 48.530, -108.867

A severe thunderstorm dropped 1.75 inch diameter hail at Harlem 4W.

Thunderstorm Wind, Glacier

When: June 25, 12:03 PM MST
Where: Glacier County, 3 mi SW of Cutbank
Measured: 53 kt (61 mph) measured gust
Reported by: Official NWS Observations
Coordinates: 48.599, -112.366

A severe thunderstorm produced a wind gust to 61 mph at the Cut Bank ASOS site.

Thunderstorm Wind, Teton

When: June 25, 3:35 PM MST
Where: Teton County, 1 mi N of Choteau
Measured: 62 kt (71 mph) measured gust
Reported by: Trained Spotter
Coordinates: 47.834, -112.180

A severe thunderstorm produced a wind gust to 71 mph at the Choteau airport.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Montana in 2007 Every state in 2007 This day in weather history Warnings in Montana, June 2007

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 31679, 31680, 31681, 31682, 31683, 31684, 31685.