Village officials reported two ice jams along the Inmachuk river near Deering Alaska. The combination of the ice jams along with warm temperatures and snow melt helped raise the river levels of the Inmachuk river.
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The episode as NWS AFG wrote it up.
Village officials reported two ice jams along the Inmachuk river near Deering Alaska. The combination of the ice jams along with warm temperatures and snow melt helped raise the river levels of the Inmachuk river. Water began to flood the road leading to the Deering Airport on May 11th. A spokesman with the state division of homeland security and emergency management said the waters over the road were 3 feet deep. This prompted a pair of disaster declarations from area authorities. The flood caused minor damage to the road.
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 11, 1:06 AM AKST, 13 hours 44 minutes earlier.
NORTHERN ALASKA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FAIRBANKS AK 206 AM AKDT WED MAY 11 2016 .DISCUSSION... MODELS...BIG PICTURE IS IN VERY GOOD AGREEMENT OUT TO AROUND 90 HOURS. GOOD INITIALIZATION AGAINST 06Z SURFACE ANALYSIS. DEEP FLOW OF MOISTURE CONTINUES TO STREAM NORTH OVER THE WEST COAST. RIDGE CONTINUES TO BUILD OVER THE EASTERN INTERIOR AND EASTERN BROOKS RANGE. JUST GOING TO NUDGE THE HIGH TEMPERATURES DOWN A DEGREE OR SO IN THE SHORT TERM AS THEY ARE A BIT HIGH. AGAIN TODAY WILL LEAN ON THE NAM BUT BLEND IN SOME GFS AND SREF FOR THE PRECIPITATION OVER THE WEST COAST. ALOFT...AT 500 HPA...RIDGE OVER THE EASTERN HALF OF THE STATE CONTINUES TO BUILD TODAY AS THE TROUGH OVER THE CENTRAL BERING SEA IS STALLED. HEIGHTS OVER THE ALCAN BORDER CLIMB TO AROUND 579 DAM BY FRIDAY MORNING AS A CLOSED HIGH DEVELOPS OVER THE UPPER TANANA AND UPPER YUKON VALLEYS. THE 530 DAM LOW OVER THE CENTRAL BERING SEA THIS MORNING WILL WEAKEN TO 545 DAM THURSDAY NIGHT THEN GETS ABSORBED INTO A LOW IN THE NORTH PACIFIC. A 522 DAM CLOSED LOW WILL MOVE EAST 75N 180 BY FRIDAY MORNING WITH A STRONG SHORTWAVE EXTENDING SOUTH OVER THE CHUKCHI SEA. THE LOW WILL MOVE RAPIDLY EAST TO BANKS ISLAND BY SATURDAY EVENING WITH THE SHORTWAVE SQUASHING THE RIDING OVER THE INTERIOR AS THE SHORTWAVE PUSHES EAST ACROSS THE AREA. AS THE RIDGE IS SQUASHED IT ELONGATES EAST TO WEST AND WILL LIE ACROSS THE CENTRAL INTERIOR TO THE SEWARD PENINSULA TO CHUKOTKA BY SATURDAY MORNING. AT 850 HPA...MUCH WARMER TEMPERATURES OVER THE EASTERN INTERIOR AS TEMPERATURES OVER FAIRBANKS WILL SURGE TO NEAR 10 CELSIUS BY LATE IN THE WEEK AND THE ZERO ISOTHERM PUSHED WEST TO LIE FROM BARROW TO KALTAG TO DILLINGHAM BY THURSDAY MORNING. EAST OF BARROW THE TEMPERATURES WILL RISE AS WELL AS THE ZERO ISOTHERM PUSHES NORTH OVER THE BEAUFORT SEA TONIGHT AND TEMPERATURES OVER BARTER ISLAND RISE TO AROUND 5 ABOVE CELSIUS. SURFACE...SOUTHERLY FLOW OVER THE WEST COAST CONTINUES WITH THE STACKED LOW STATIONARY IN THE CENTRAL BERING SEA. MOISTURE CONTINUES TO TRAIN NORTH FROM THE CENTRAL PACIFIC AND WILL SLOWLY FALL APART THROUGH FRIDAY MORNING. WEAK THERMAL TROUGH OVER THE INTERIOR LIES IN THE TANANA VALLEY. OFFSHORE FLOW OVER THE ARCTIC COAST WILL FALL APART BY THURSDAY AFTERNOON. ARCTIC COAST AND BROOKS RANGE...WARM IN THE EAST AND SLIGHTLY WARMER TO THE WEST OF BARROW. RIDGE CONTINUES TO BUILD OVER THE EASTERN BROOKS RANGE AND WITH A 850 HPA TEMPERATURES ON THE RISE SURFACE TEMPERATURES WILL BE WARMING SIGNIFICANTLY. GOOD SCENARIO FOR MELTING OF THE SNOWPACK IN THE BROOKS RANGE THE NEXT COUPLE DAYS AS HIGHS IN THE EASTERN BROOKS RANGE MAY BE NEAR 60 DEGREES IN SOME AREAS. STILL HAVE SOME PATCHY DENSE FOG HANGING AROUND BARTER ISLAND BUT THAT SHOULD BE KICKED OUT LATER THIS MORNING. STILL EXPECTING SOME SHOWERS IN THE PLAINS ALONG THE COAST FROM BARROW TO POINT LAY. WEST COAST AND WESTERN INTERIOR...DRYING IN THE BERING STRAIT COASTAL AREAS...OTHERWISE WET...WET...WET...TRAINING MOISTURE FROM THE CENTRAL PACIFIC WILL CONTINUE AS THE SYSTEM GRADUALLY SLIDES EAST IN THE THE WESTERN INTERIOR TODAY. RAIN TAPERING OFF ON THE SEWARD PENINSULA...BUT UPSLOPE AREAS IN THE BROOKS RANGE AND THE NORTHERN NULATO HILLS WILL BE THE AREAS WITH THE HEAVIEST RAINFALL TODAY AND TONIGHT. THERE IS A POSSIBILITY OF SNOW AND RAIN MIXED ON ST LAWRENCE ISLAND. FLOOD ADVISORY CONTINUES FOR ZONES 210 AND 211 AND FLOOD WATCHES CONTINUE FOR ZONE 208 AND 217 THROUGH THURSDAY MORNING. SOUTH WINDS WILL CONTINUE FOR THE NEXT FEW DAYS AT 10 TO 20 MPH FOR MOST AREAS. CENTRAL AND EASTERN INTERIOR...PRETTY QUIET HERE...SOME HIGH CLOUDS MOVING THROUGH THE AREA...BUT OVERALL PARTLY TO MOSTLY SUNNY. TEMPERATURES CONTINUE TO RISE TODAY ACROSS THE AREA. WINDS IN THE ALASKA RANGE WILL TAPER DOWN THIS MORNING...BUT WITH THE THERMAL TROUGH AROUND SOME LOCAL GUSTS TO 25 MPH CAN STILL BE EXPECTED IN THE AFTERNOON. && .FIRE WEATHER...EVEN DRIER AND WARMER THAN YESTERDAY IN THE INTERIOR AND THAT WILL BE THE TREND FOR THE NEXT COUPLE DAYS. WET OUT WEST OF TANANA AND CWR SHOULD BE FAIRLY HIGH FOR MOST AREAS SO NOT EXPECTING ANY ISSUES. ATMOSPHERE IS RELATIVELY STABLE SO NOT EXPECTING ANY THUNDERSTORMS UNTIL AT LEAST THE WEEKEND. && .HYDROLOGY...RAINS ARE TAPERING OFF ON THE COAST...BUT THE HEAVIER RAINS HAVE MOVED INTO THE MIDDLE YUKON VALLEY AND THEY WILL CONTINUE THROUGH THE DAY. SOME FLOODING HAS BEEN REPORTED AROUND THE DEERING AIRPORT THIS MORNING...BUT IT APPEARS TO ONLY BE AROUND THE AIRPORT ACCESS ROADS AT THIS TIME. FLOOD ADVISORIES CONTINUE FOR ZONES 210 AND 211...AND FLOOD WATCHES FOR ZONES 208 AND 217 REMAIN IN PLACE. && .AFG WATCHES/WARNINGS/ADVISORIES... FLOOD ADVISORIES FOR AKZ210-AKZ211. FLOOD WATCH FOR AKZ208-AKZ217. SMALL CRAFT ADVISORY FOR PKZ200-PKZ210. GALE WARNING FOR PKZ220-PKZ225-PKZ230-PKZ235. BRISK WIND ADVISORY FOR PKZ215. && SDB MAY 16
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
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Every storm in Alaska in 2016Every state in 2016This day in weather historyWarnings in Alaska, May 2016
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: 638653.