An ice jam below the village of Chalkyitsik caused water to back up in the Black river and caused minor flooding in the village on May 6th. There were a total of 10 homes that had minor flooding, and many yards were submerged by the flood waters.
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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.
An ice jam below the village of Chalkyitsik caused water to back up in the Black river and caused minor flooding in the village on May 6th. There were a total of 10 homes that had minor flooding, and many yards were submerged by the flood waters.
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 May 5, 11:28 PM AKST, 12 hours 32 minutes earlier.
NORTHERN ALASKA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FAIRBANKS AK 1228 AM AKDT WED MAY 6 2009 .DISCUSSION... SHORT RANGE PROGS FROM ECMWF/GFS/NAM HAVE SIMILAR SOLUTIONS THROUGH 12Z FRI. GFS ENSEMBLE MEAN ALSO SHOWS A SIMILAR SOLUTION ALTHOUGH SOMEHWAT SMOOTHED OUT. UPPER TROUGH OVER THE WEST CENTRAL INTERIOR WILL WEAKEN THROUGH 12Z THU...WITH A LOW CENTER SPLITTING OFF AND MOVING TO EAST OF KODIAK ISLAND BY 12Z THU. BY 12Z FRI...RIDGING ALOFT BUILDING OVER THE SOUTHERN PARTS OF THE WEST COAST AND WESTERN INTERIOR...WITH A BAND OF WESTERLIES FARTHER TO THE NORTH. A SHORT WAVE IN THE WESTERLY FLOW MAY BRING SOME SNOW OR SNOW SHOWERS TO THE ARCTIC COAST LATE THU NIGHT THROUGH FRI AS IT MOVES EASTWARD. A WEAK SURFACE SYSTEM ASSOCIATED WITH THE SHORT WAVE WILL TRANSIT EASTWARD ACROSS THE BEAUFORT SEA. SURFACE WINDS ALONG THE ARCTIC COAST ARE NOT EXPECTED TO EXCEED 20 KT WITH THIS LOW. ECMWF/GFS APPEAR TO BE COMING MORE IN LINE IN THE EXTENDED PERIOD. THE MAJOR TREND IS THE BUILDING OF AN UPPER HIGH OVER THE EASTERN ALEUTIANS BY 12Z SUN...MOVING TO NEAR KODIAK ISLAND BY 12Z TUE. ANTICYCLONIC FLOW AND GENERALLY BUILDING HEIGHTS CAN BE EXPECTED OVER MOST OF THE FORECAST AREA. ONE DIFFERENCE...ECMWF MOVING A FEW FAST MOVING LOW AMPLITUDE SHORT WAVES ACROSS THE TOP OF THE RIDGE WHICH BRIEFLY SQUASH DOWN THE HEIGHTS OVER THE NORTHERN PARTS OF THE FORECAST AREA. GFS CARRYING MORE DOMINANT UPPER RIDGING AND ANTICYCLONIC FLOW OVER THE NORTHERN PARTS OF THE FORECAST AREA IN THE EXTENDED PERIOD. && .FIRE WEATHER... MIN RH IN INTERIOR REMAINING ABOVE 40% TODAY. SOME DRYING EXPECTED THU AND FRI WITH MIN RH 30-35% IN THE SOUTHERN INTERIOR. SURFACE WINDS REMAINING BELOW 15 MPH TODAY AND THU. && .HYDROLOGY... ICE JAM OR SNOWMELT FLOODING CONTINUES AT MULTIPLE LOCATIONS IN THE INTERIOR... FLOOD WATCH IN EFFECT FOR THE BUCKLAND RIVER AT BUCKLAND. FLOOD WATCH IN EFFECT FOR THE KOYUKUK RIVER AT HUGHES. FLOOD WATCH IN EFFECT FOR THE BLACK RIVER AT CHALKYITSIK. FLOOD WARNING IN EFFECT FOR THE KOBUK RIVER AT KOBUK. FLOOD WARNING IN EFFECT FOR THE YUKON RIVER FROM EAGLE TO CIRCLE. FLOOD WATCH IN EFFECT FOR THE YUKON RIVER FROM CIRCLE TO THE YUKON RIVER BRIDGE. . && .AFG WATCHES/WARNINGS/ADVISORIES... FLOOD WATCH FOR AKZ210-AKZ219-AKZ220. && RF MAY 09
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alaska in 2009Every state in 2009This day in weather historyWarnings in Alaska, May 2009
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: 168893.