Heavy Rain, Denali
- When
- June 1, 6:00 PM AKST to June 2, 8:00 AM AKST
- Where
- Denali County, 3.56 mi SSE of Healy to 1.9 mi NNE of Denali N.P.
- Reported by
- Department of Highways
- Coordinates
- 63.801, -148.932
Heavy rain fell from the early evening of the 1st into the morning hours on the 2nd. 5 along the Parks Highway that sent debris onto the Parks Highway just north of Denali National Park.
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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 AFG wrote it up.
Heavy rain fell from the early evening of the 1st into the morning hours on the 2nd. The heavy rain caused a rock slide in the Nenana River Canyon at MP 239.5 along the Parks Highway that sent debris onto the Parks Highway just north of Denali National Park. Rainfall amounts ranged from 1.53 inches at Denali Park Headquarters to 1.66 inches at the Healy River Airport.
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 Fairbanks, AK wrote its last area forecast discussion before the first event at Jun 1, 2:26 PM AKST, 3 hours 34 minutes earlier.
NORTHERN ALASKA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FAIRBANKS AK 326 PM AKDT FRI JUN 1 2012 .DISCUSSION... WEAK UPPER RIDGE ORIENTED SW-NE ACROSS THE ALASKA INTERIOR WILL PERSIST THROUGH SAT. THIS WILL THEN BE FOLLOWED BY HIGH PRESSURE BUILDING AND EXPANDING OVER NORTHERN ALASKA THROUGH NEXT WEEK. A SURFACE THERMAL TROUGH EXTENDING FROM THE UPPER YUKON VALLEY SOUTHWESTWARD IS EXPECTED TO WEAKEN SLOWLY THROUGH SUN. THE MOST ACTIVE AREAS OF CONVECTION TODAY AND SAT ARE EXPECTED TO BE IN THE CENTRAL AND NORTHERN INTERIOR WITH THE SURFACE THERMAL TROUGH PROVIDING GENERAL LOW LEVEL CONVERGENCE AND THE WEAK SHORT WAVE ALOFT ADDING SOME UPPER LEVEL DYNAMICS. ISOLATED SHOWERS AND THUNDERSTORM ACTIVITY CAN BE EXPECTED OVER MUCH OF THE WESTERN INTERIOR THIS AFTERNOON AND EVENING WITH THE THERMAL TROUGH BEING THE MAIN FOCUS. STRATUS AND DIURNAL FOG WILL CONTINUE TO BE A PROBLEM ALONG THE CENTRAL AND EASTERN ARCTIC COAST WITH EAST TO NORTHEAST SURFACE WINDS BEING PREDOMINANT.STRATUS FOG CAN BE EXPECTED DURING THE NIGHT AND EARLY MORNING ALONG THE KOTZEBUE SOUND COAST. LATE EVENING GOES VIS LOOP SHOWS EXTENSIVE STRATUS OVER OUTER KOTZEBUE SOUND...EXPANDING SOUTHEASTWARD. FIRE WEATHER... AFTERNOON HUMIDITIES IN THE INTERIOR ARE EXPECTED TO BE MAINLY IN THE 20-30 PERCENT RANGE...A FEW SITES MAY GO DOWN INTO THE UPPER TEENS. GENERAL SURFACE WINDS IN THE INTERIOR WILL BE MAINLY 10 MPH OR LESS. HYDROLOGY... NO PROBLEM AREAS. && .AFG WATCHES/WARNINGS/ADVISORIES... NONE. && JUN 12
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alaska in 2012Every state in 2012This day in weather historyWarnings in Alaska, June 2012
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: 374490.