Montana, 2002

Hail in Montana, August 10, 2002

August 10, 2002 · NWS TFX · 1 event in 1 county or zone

1 hail, as filed by the National Weather Service.

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
1

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 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 Aug 10, 2:00 PM MST, 5 hours 15 minutes earlier.

Area forecast discussion, Aug 10, 2:00 PM MST, 5 hours 15 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
300 PM MDT SAT AUG 10 2002

.SHORT TERM...A WEAK DISTURBANCE IS MOVING ACROSS NORTH AND CENTRAL
MT. THE BEST CHANCE FOR PRECIP FROM THIS DISTURBANCE WILL REMAIN
NORTH OF THE BORDER. THE ONLY AREA OF INSTABILITY IN THE CWA IS OVER
THE NORTHERN ZONES ALONG THE CANADIAN BORDER. CURRENT SATELLITE
INDICES STILL SHOW THE AREAS TO BE STABLE TO NEUTRAL BUT WILL KEEP
MENTION OF EVENING THUNDERSTORMS IN THE NORTHERN ZONES AS THEY SHOULD
BECOME SLIGHTLY MORE UNSTABLE. THE NEXT SYSTEM DUE ON SUNDAY IS
STRONGER. 3H JET COMES DOWN INTO CENTRAL MT BY 18Z SUN. LOTS OF
DIFLUENCE ALOFT OVER SRN SASK AND THAT AREA WILL HAVE MOST OF THE
ACTION. IN OUR CWA...THE VORT MAX MOVES DOWN THRU CENTRAL MT BUT
STAYS NORTH OF SW MT. THE INITIAL PUSH OF THE COLD FRONT WILL BRING
GUSTY NORTH WINDS AND A CHANCE OF PRECIP. HOWEVER...THE SURFACE HIGH
MOVES INTO THE AREA FROM THE NORTHWEST AND DOES NOT LOOK PARTICULARLY
STRONG OR COLD. THE SYSTEM SHOULD QUICKLY MOVE EAST AND NOT CREATE
ANY LINGERING EAST/UPSLOPE FLOW. ANOTHER WEAK SHORTWAVE MOVES THRU
THE AREA ON MONDAY AND SHOULD KEEP SKIES MOSTLY CLOUDY...BUT NO
PRECIP. DRY AND WARMER THRU TUESDAY. ZELZER

.EXTENDED...DRY NW FLOW ALOFT THROUGH PERIOD WITH A SHORT WAVE/COLD
FRONT TO MOVE THROUGH ON WEDNESDAY. WILL MENTION A SLIGHT CHANCE OF
SHOWERS FOR WEDNESDAY. TEMPERATURES SHOULD STAY COOLER THAN NORMAL.
FLOW BEGINS TO BECOME SW AND PICKING UP SOME MOISTURE BY NEXT
WEEKEND.  CAMP

.CCF NUMBERS
GTF EE 052/068 045/074 048 13121
    BEBBB 080/048 078/050 078/048 075/048 075 11112111111
CTB CE 049/065 043/070 046 13331
    BBBBB 076/048 076/045 078/048 074/048 074 11112111111
HLN EB 050/072 046/078 050 13121
    BBBBB 082/048 083/051 081/050 078/050 078 11112111111
BZN EB 044/074 040/076 040 13011
    BBBBB 078/046 080/047 078/045 079/047 076 11111111111
WEY EB 035/065 033/070 035 13011
    BBBBB 072/043 075/045 075/045 072/045 072 11111111111
DLN EB 047/074 042/073 042 13011
    BBBBB 075/048 080/050 080/047 078/047 078 11111111111
HVR WB 054/068 045/075 050 13331
    BBBBB 082/048 078/050 080/048 077/047 076 11112111111
LWT WB 047/067 042/070 045 13121
    BBBBB 075/046 077/048 078/050 075/047 073 11112111111

.TFX...NONE.

The radar

The Great Falls radar (KTFX), 184 km away, was scanning. The volume nearest the first event began at 02:14 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Hill

When
August 10, 7:15 PM MST
Where
Hill County, Simpson
Measured
1.25 in hail
Reported by
TRAINED SPOTTER
Coordinates
48.900, -110.167

A severe thunderstorm produced 1.25 inch hail at Simpson 6NE.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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

The same day elsewhere

More

Every storm in Montana in 2002Every state in 2002This day in weather historyWarnings in Montana, August 2002

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: 5317582.