1 dense fog, as filed by the National Weather Service.
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 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 Boise, ID wrote its last area forecast discussion before the first event at Jan 3, 12:45 PM PST, 6 hours 45 minutes earlier.
SOUTHWEST IDAHO/SOUTHEAST OREGON AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE IDAHO 145 PM MST THU JAN 3 2002 A SHORTWAVE TROUGH WILL EXIT TO THE EAST THIS EVENING. PRECIP WILL END AND SKIES WILL CLEAR IN THE MID AND HIGH LEVELS BUT NOT THE LOW LEVELS. A RIDGE OF HIGH PRESSURE ALOFT AND AT THE SURFACE WILL TAKE OVER LATER TONIGHT AND CONTINUE THROUGH FRIDAY NIGHT. THIS COUPLET WILL FAVOR VALLEY INVERSIONS WITH LOW CLOUDS AND FOG. DURING THE DAY SATURDAY, A SHORTWAVE TROUGH WILL FLATTEN THE UPPER RIDGE AND BRING A SLIGHT CHANCE OF SNOW TO THE NORTHERN ZONES INTO SUNDAY. TEMPERATURES WILL BE A LITTLE ABOVE NORMAL IN THE MOUNTAINS AND BELOW NORMAL FOR THE VALLEYS THROUGH SUNDAY. IN THE EXTENDED PERIOD (MON-THU)...MODELS AGREE ON HAVING AN UPPER RIDGE OVER THE WESTERN STATES MON-THU OF NEXT WEEK. 500 MB HEIGHTS WILL AVERAGE 200 METERS ABOVE NORMAL. SHORTWAVE TROUGH ACTIVITY ON MON/TUE WILL BRING A SMALL CHANCE OF SNOW TO THE NORTHERN ZONES OTHERWISE DRY THROUGH THE PERIOD WITH THE TYPICAL VALLEY INVERSIONS AND FOG. TEMPERATURES SHOULD BE NEAR NORMAL FOR THE VALLEYS AND A LITTLE ABOVE NORMAL FOR THE MOUNTAINS. .BOI...NONE. EGGER
The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Dense fog developed in Baker County on the evening of January 3rd. Visibility was reduced to a quarter mile throughout the night. Morning traffic on Interstate 84 was slowed by limited visibility and slick roadways. Visibility began to improve by 1000 am.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2002Every state in 2002This day in weather historyWarnings in Oregon, January 2002
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: 5280068.