Heavy Snow in Idaho, April 2 to 3, 2010

Name: Heavy Snow in Idaho, April 2 to 3, 2010
Start: 2010-04-02T16:00
End: 2010-04-03T13:00
Location: Idaho

April 2 to 3, 2010 · NWS PIH · 1 event in 1 county or zone

Less than warning criteria snowfall occurred in the Upper Snake River Highlands causing road closures on Saturday morning April 3rd. 5 inches fell in Island Park.

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 happened

The episode as NWS PIH wrote it up.

Less than warning criteria snowfall occurred in the Upper Snake River Highlands causing road closures on Saturday morning April 3rd. 8 inches of snow fell in Ashton and 8.5 inches fell in Island Park. State Highway 33 was closed from Newdale to Tetonia from milepost 107 to milepost 131, and State Highway 32 was closed from milepost 0 to milepost 28 due to reduced visibility.

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 Pocatello, ID wrote its last area forecast discussion before the first event at Apr 2, 1:00 PM MST, 3 hours earlier.

Area forecast discussion, Apr 2, 1:00 PM MST, 3 hours before

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Hazardous weather outlook, Apr 2, 3:05 AM MST, 12 hours 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
405 AM MDT FRI APR 2 2010

IDZ017>025-031-032-031015-
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
405 AM MDT FRI APR 2 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES ARE IN EFFECT
FOR PORTIONS OF THE CENTRAL IDAHO MOUNTAINS AND THE EASTERN
HIGHLANDS STARTING THIS AFTERNOON. CHECK THE LATEST URGENT WINTER
WEATHER MESSAGE FOR DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES CONTINUE INTO
SATURDAY MORNING FOR PORTIONS OF THE FORECAST AREA. ANOTHER STRONG
SPRING SNOW STORM IS EXPECTED ON MONDAY.

.SPOTTER INFORMATION STATEMENT...

WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT
WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY
INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL...
EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE
FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS
CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE
OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR
208-233-0834.

MESSICK

Event by event

1 heavy snow. Local standard time, as filed.

Heavy Snow, Upper Snake Highlands

When: April 2, 4:00 PM MST to April 3, 1:00 PM MST
Where: Upper Snake Highlands forecast zone
Reported by: Department of Highways

Less than warning criteria snowfall amounts occurred in the Upper Snake River Highlands causing road closures on Saturday morning April 3rd. 8 inches of snow fell in Ashton and 8.5 inches fell in Island Park. State Highway 33 was closed from Newdale to Tetonia from milepost 107 to milepost 131, and State Highway 32 was closed from milepost 0 to milepost 28 due to reduced visibility.

What these are

Heavy Snow: Snowfall reaching the local warning threshold without the other hazards of a winter storm.

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

The same day elsewhere

Every storm in Idaho in 2010 Every state in 2010 This day in weather history Warnings in Idaho, April 2010

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 2026-09-30. Each event’s entry at NCEI: 225262.