Idaho, 2004

Heavy Rain in Idaho, June 29, 2004

June 29, 2004 · NWS MSO · 2 events in 2 counties and zones

Landslides reported near Panther and Cove Creeks on the main river road in northern Lemhi County due to heavy rain from a thunderstorm. People were left stranded because the road was impassable.

Where it happened

Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
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  • Cold
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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

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 MSO wrote it up.

Landslides reported near Panther and Cove Creeks on the main river road in northern Lemhi County due to heavy rain from a thunderstorm. People were left stranded because the road was impassable. Heavy rain from a thunderstorm caused a mudslide and flooding over Highway 95 north of Riggins, ID, with many culverts reported flooded.

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 Missoula, MT wrote its last area forecast discussion before the first event at Jun 29, 1:21 PM MST, 1 hour 59 minutes earlier.

Area forecast discussion, Jun 29, 1:21 PM MST, 1 hour 59 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
221 PM MDT TUE JUN 29 2004

.SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT...THE UPPER LEVEL
PATTERN CONTINUES. SOUTHWEST FLOW WILL CONTINUE TO ADVECT MOIST
MONSOONAL AIR INTO THE NORTHERN ROCKIES. WEAK DISTURBANCE WILL PUSH
THROUGH THE PATTERN WITH THE BEST POTENTIAL FOR SHOWERS AND
THUNDERSTORMS FALLING IN THE AFTERNOON AND EVENING WHEN THE
ATMOSPHERE DESTABILIZES. ANY STORMS THAT DO DEVELOP DURING THIS TIME
HAVE THE POTENTIAL TO BE HEAVY RAINERS AS THE ATMOSPHERE IS VERY
MOIST WITH WEAK STEERING WINDS...THUS WILL TO MONITOR THE 2003
SEVERELY BURNED AREAS FOR FLASH FLOODING ESPECIALLY CLOSE THIS
EVENING AND WEDNESDAY AFTERNOON AND EVENING. ALSO CAN NOT RULE OUT
NOCTURNAL SHOWER AND THUNDERSTORM ACTIVITY DURING THE NIGHTTIME
HOURS...AS THE MODELS CONTINUE TO STRUGGLE WITH THE LOCATION AND
TIMING OF WEAK EMBEDDED FEATURES THAT COULD TRIGGER SUCH STORMS.
TEMPERATURES WILL REMAIN ON THE WARM SIDE UNDER THIS FLOW PATTERN

.LONG TERM...WEDNESDAY THROUGH MONDAY...THE RIDGE REMAINS IN
PLACE THROUGH FRIDAY...WILL HOLD ON TO SLIGHT CHANCE TO LOW CHANCE
POPS FOR SHOWERS/TSTMS FROM THE DAY TIME HEATING. BY THE WEEKEND
MODELS ARE MOVING AN UPPER LEVEL TROUGH INTO THE PACIFIC NORTHWEST...
WILL CONTINUE THE TREND FROM THE EARLIER SHIFT AND KEEP CHANCE POPS
MOST AREAS WITH SLIGHTLY COOLER TEMPERATURES. ON MONDAY THE TROUGH
MOVES OFF TO THE EAST WITH DRIER AND COOLER CONDITIONS.
&&

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

SHORT TERM/GILCHRIST
LONG TERM/KOLATA
Hazardous weather outlook, Jun 29, 10:27 AM MST, 4 hours 53 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
1127 AM MDT (1027 AM PDT) TUE JUN 29 2004

MTZ002-004>006-043-300407-
WEST GLACIER REGION-LOWER CLARK FORK REGION-
MISSOULA/BITTERROOT VALLEYS-BITTERROOT/SAPPHIRE MOUNTAINS-
BLACKFOOT REGION-
1127 AM MDT TUE JUN 29 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MONTANA

.DAY ONE... TODAY

SLOW MOVING AFTERNOON AND EVENING THUNDERSTORMS WILL PRODUCE LOCALLY
HEAVY RAINFALL. FLASH FLOODING IS POSSIBLE IN AND NEAR THE 2003 BURN
AREAS.

.DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY

AFTERNOON AND EVENING THUNDERSTORMS ARE POSSIBLE THROUGH
MONDAY. SOME LOCALLY HEAVY RAINFALL MAY ACCOMPANY THESE
STORMS. CONTINUE TO BE AWARE OF POSSIBLE FLASH FLOODING IN AND
NEAR THE 2003 BURN AREAS.

.SPOTTER INFORMATION STATEMENT...

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

IDZ005>008-300407-
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER-
1027 AM PDT TUE JUN 29 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL IDAHO

.DAY ONE... TODAY

SLOW MOVING AFTERNOON AND EVENING THUNDERSTORMS WILL PRODUCE
LOCALLY HEAVY RAINFALL. LOCAL PONDING OF WATER AND RISING STREAMS
WHERE THUNDERSTORMS DEVELOP ARE POSSIBLE THIS AFTERNOON AND
EVENING. THERE ALSO IS A SLIGHT RISK OF STORMS WITH LARGE HAIL.

.DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY

AFTERNOON AND EVENING THUNDERSTORMS ARE POSSIBLE THROUGH
MONDAY. SOME LOCALLY HEAVY RAINFALL MAY ACCOMPANY THESE
STORMS. THERE WILL CONTINUE TO BE THE RISK OF LOCAL FLOODING
AND HAIL WITH THUNDERSTORMS DURING THE AFTERNOON AND EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

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

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 heavy rain. Local standard time, as filed.

Heavy Rain, Lemhi

When
June 29, 3:20 PM MST
Where
Lemhi County, 14 mi W of Shoup
Reported by
TRAINED SPOTTER
Coordinates
44.943, -113.933 (the zone’s center; the record gives no point)

Heavy Rain, Idaho

When
June 29, 6:20 PM PST
Where
Idaho County, 2 mi N of Riggins
Reported by
LAW ENFORCEMENT
Coordinates
45.844, -115.467 (the zone’s center; the record gives no point)

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

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

The same day elsewhere

More

Every storm in Idaho in 2004Every state in 2004This day in weather historyWarnings in Idaho, June 2004

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: 5404258, 5404257.