Moisture remained trapped under an inversion which allowed dense fog to form across portions of southeast Utah.
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.
Moisture remained trapped under an inversion which allowed dense fog to form across portions of southeast Utah.
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 Nov 29, 9:57 PM MST, 2 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 957 PM MST FRI NOV 29 2013 .SHORT TERM...(TONIGHT THROUGH SATURDAY NIGHT) ISSUED AT 325 PM MST FRI NOV 29 2013 THE BIGGEST CHALLENGE IN THE SHORT TERM WILL BE PREDICTING WHEN AND WHERE THE FOG RETURNS TONIGHT. THE CLOSED LOW JUST OFF OF THE COAST OF SOUTHERN CA IS IN THE PROCESS OF WEAKENING IN PLACE. A BROAD AND WEAK DEFORMATION ZONE CONTINUES TO HANG OVERHEAD OF THE REGION SIGNIFYING FRONTOLYSIS ASSOCIATED WTH THE WEAKENING LOW. CONDITIONS ARE NOT EXPECTED TO CHANGE MUCH IN THE NEAR TERM UNTIL SATURDAY EVENING WHEN A WEAK TROUGH SWINGS DOWN INTO NW CO. CLOUDS AND A NORTHWESTERLY WIND WILL BEGIN TO INCREASE SAT NIGHT...PARTICULARLY OVER NW CO. .LONG TERM...(SUNDAY THROUGH FRIDAY) ISSUED AT 325 PM MST FRI NOV 29 2013 THE GRADIENT TIGHTENS ON SUN AS THE SOUTHERN CUT OFF LOW RETREATS SOUTHWESTWARD TO A POSITION WELL WEST OF THE BAJA PENINSULA...AND A SHORTWAVE IN THE NORTH-WESTERLIES DROPS INTO THE CENTRAL PLAINS. OUR AREA WILL SEE SOME COLD ADVECTION AT 700 MB THROUGH SUN UNDER A STRENGTHENING NORTHWEST FLOW...MAINLY OVER THE NORTHERN EDGE. THEREFORE THE FIRST FORECAST QUESTION THAT ARISES...IS WHETHER THIS WILL BE ENOUGH COOLING ABOVE THE SURFACE LAYER TO DISRUPT THE STRONG INVERSIONS...AND THUS INHIBIT THE VALLEY FOG THAT HAS PLAGUED MUCH OF THE LOWER ELEVATIONS THIS PAST WEEK. WILL GO AHEAD AND KEEP MENTION OF SOME PATCHY FOG IN THE FAR SOUTHWEST/WEST VALLEYS ON SUN...BUT REDUCE COVERAGE ESPECIALLY ACROSS THE WESTERN CO VALLEYS. AS THE ABOVE MENTIONED NORTHWEST FLOW GETS ESTABLISHED... OROGRAPHIC SNOW WILL DEVELOP ON SUN OVER THE NORTHERN MOUNTAINS... ESPECIALLY THE PARK AND ELKHEAD RANGES...AND LESS SO THE FLATTOPS AND GORE MTNS...AND TO THE ASPEN AREA. THIS SNOW WILL CONTINUE THROUGH MON. BY LATE MON THE GRADIENT WILL RELAX A LITTLE AS A SHORTWAVE RIDGE PASS OVERHEAD FOR A DECREASE IN SNOW. ALL TOLD A FEW INCHES AT BEST MAY ACCUMULATE ACROSS THE FAVORED NORTHWEST SLOPES. THIS IS ALL AHEAD OF A MORE UNSETTLED PERIOD THAT BEGINS TO SET UP LATE TUE AND WILL POSSIBLY LAST THROUGH THE END OF THE WORK WEEK. THE MIDRANGE MODELS SHOW A STRONG AND COLD LOW PRESSURE SYSTEM DROPPING INTO THE PACIFIC NORTHWEST ON MON. THERE IS STILL SOME UNCERTAINTY IN THE TRACK AND TIMING AS THIS INITIAL LOW MOVES EAST. MODELS DO KEEP ITS TRACK TO OUR NORTH. BUT THEY ALSO SHOW AN ASSOCIATED COLD FRONT IN THE LOWER LEVELS...AND AN UPPER LEVEL JET CORE MOVING OVER THE NORTHWEST CORNER OF THE FORECAST AREA AS EARLY AS TUE AFTERNOON. THE FRONT THEN PROCEEDS TO THE SOUTH/SOUTHEAST OVERNIGHT AND ON WED FOR MUCH COLDER TEMPERATURES AT THE SURFACE. THE ONLY EXCEPTION MAY BE THOSE VALLEYS THAT HAVE BEEN LOCKED UNDER STRONG INVERSIONS...THEY MAY ACTUALLY SEE AFTERNOON HIGHS RISE A FEW DEGREES COMPARED TO TUE. PRECIPITATION WILL BEGIN TO SPREAD IN FROM THE NORTH AS THE FRONT APPROACHES LATE TUE...THEN INCREASE TUE NIGHT AS THE FRONT PASSES AND THE UPPER JET SPREADS ACROSS THE FORECAST AREA. PRECIPITATION WILL BECOME LIKELY BY WED...ESPECIALLY MOUNTAINS. ONLY A FEW OF THE LOWEST VALLEYS WILL SEE RAIN OR MIXED PHASE ON WED BEHIND THE FRONT. THEN OVER THE NEXT COUPLE OF DAYS...ADDITIONAL REINFORCING SHORTWAVES WILL CARVE OUT A LONG WAVE TROUGH OVER THE WESTERN CONUS. THERE CONTINUES TO BE DISCREPANCIES IN HOW THIS LARGE SCALE AND COMPLICATED PATTERN WILL UNFOLD...BUT IT DOES LOOK LIKE THE REGION WILL SEE SIGNIFICANT SNOWFALL THROUGH THE END OF THE WEEK. THE COLD NATURE OF THIS STORM SYSTEM...TEMPS BELOW -30C/500 MB AND -12C/700 BY FRI...WILL BRING SNOW INTO THE LOWEST VALLEYS. AND...AT TIMES STRONG SOUTHWEST WINDS MAY RESULT IN BLOWING AND DRIFTING SNOW. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z SATURDAY NIGHT) ISSUED AT 956 PM MST FRI NOV 29 2013 LITTLE CHANGE IS EXPECTED OVER THE NEXT 24 HRS WITH LOW BKN-OVC STRATUS CLOUDS PERSISTING IN MANY VALLEYS IN EASTERN UTAH AND FAR WESTERN COLORADO. THE TAF SITES OF KASE...KTEX...KDRO AND POSSIBLY KEGE SHOULD HAVE VFR CONDITIONS THROUGH SATURDAY EVENING. THE AIRFIELDS OF KVEL...KCNY...KGJT...KMTJ...KRIL CONTINUE STRUGGLING WITH MVFR/IFR CIGS AND/OR VISIBILITY MUCH IF NOT ALL OF THIS PERIOD. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && SHORT TERM...JAM LONG TERM...EH AVIATION...JAD
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 544 AM MST FRI NOV 29 2013 COZ001>014-017>023-UTZ022>025-027>029-301300- LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN- ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS- UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR- CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS- UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE- NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS- PARADOX VALLEY/LOWER DOLORES RIVER- FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN- SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS- EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT- LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES- 544 AM MST FRI NOV 29 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT LOW CLOUDS AND AREAS OF FOG WILL PERSIST ACROSS MUCH OF EASTERN UTAH...AS WELL IN MANY VALLEYS OF WESTERN COLORADO WEST OF OF CRAIG TO DURANGO LINE THIS MORNING. VISIBILITY MAY DROP AS LOW AS 1/2 MILE IN THE FOG AND CAUSE SOME LOCALIZED TRAVEL SLOWDOWNS. SIMILAR CONDITIONS ARE EXPECTED AGAIN TONIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SOME SNOW POSSIBLE FOR THE NORTHERN MOUNTAINS SUNDAY THROUGH MONDAY BUT LITTLE IN THE WAY OF ACCUMULATION EXPECTED. A STRONG COLD FRONT WILL MOVE THROUGH THE AREA TUESDAY INTO WEDNESDAY BRINGING RAIN AND SNOW TO THE AREA ALONG WITH SOME GUSTY SURFACE WINDS. ONCE THE FRONT MOVES THROUGH...VERY COLD AIR IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Dense fog occurred in the town of Blanding as visibilities dropped down to a quarter mile or less The fog satellite product also showed widespread fog in the Blanding area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2013Every state in 2013This day in weather historyWarnings in Utah, November 2013
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: 517177.