A strong storm system moved across western Colorado and produced heavy snow across the upper Yampa River Basin. Spotters reported widespread snowfall amounts from 6 to 12 inches with locally higher accumulations up to 20 inches.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS GJT wrote it up.
A strong storm system moved across western Colorado and produced heavy snow across the upper Yampa River Basin. Spotters reported widespread snowfall amounts from 6 to 12 inches with locally higher accumulations up to 20 inches. The heavy snow brought down many trees and power lines in the area. Two snowmobiles were damaged when struck by falling trees.
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 Grand Junction, CO wrote its last area forecast discussion before the first event at Apr 23, 7:55 AM MST, 1 hour 5 minutes earlier.
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</html>COZ001>014-017>023-UTZ022>025-027>029-241100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 457 AM MDT WED APR 23 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN COLORADO AND FOR EASTERN UTAH .DAY ONE...TODAY AND TONIGHT... ISOLATED THUNDERSTORMS ARE EXPECTED TODAY AS A STORM MOVES ACROSS THE AREA. SNOW SHOWERS AND WEST WINDS 20 TO 35 MPH MAY CREATE HAZARDOUS DRIVING CONDITIONS ACROSS THE MOUNTAINS TODAY AND TONIGHT. SNOWFALL OF 3 TO 7 INCHES IS EXPECTED THROUGH TONIGHT IN THE MOUNTAINS OF WESTERN COLORADO. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... THERE IS A CHANCE OF THUNDERSTORMS ACROSS NORTHEAST UTAH AND NORTHWEST COLORADO MONDAY AND TUESDAY AS A SERIES OF DISTURBANCES PASS BY TO THE NORTH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. JAD
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2003Every state in 2003This day in weather historyWarnings in Colorado, April 2003
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 2026-10-01. Each event’s entry at NCEI: 5355539.