The Southwest monsoon continued to direct moisture into the Great Basin and central Rockies through September. 50 inches compared to normal.
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.
The Southwest monsoon continued to direct moisture into the Great Basin and central Rockies through September. Climate stations across eastern Utah showed an excess of precipitation of 0.75 to 1.50 inches compared to normal. However only slight improvement of the areal extent of the drought was achieved in the Four Corners area where severe drought conditions persisted.
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 Aug 31, 9:59 PM MST, 2 hours 1 minute earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1059 PM MDT SUN AUG 31 2014 .SHORT TERM...(TONIGHT THROUGH MONDAY NIGHT) ISSUED AT 224 PM MDT SUN AUG 31 2014 UPPER LEVEL TROUGH AXIS IS CROSSING THE DIVIDE EARLY THIS AFTERNOON...PUTTING THE BULK OF THE SYNOPTIC SCALE LIFT NOW OUT OVER THE FRONT RANGE. HOWEVER...A FEW LINES OF CONVERGENCE SET UP BY FLOW INTERACTING WITH TERRAIN FEATURES...UINTAH MTNS...FLAT TOPS AND GRAND MESA...AIDED BY WEAK MUCAPE OF 500-1000 J/KG WILL MAINTAIN SHOWERS AND THUNDERSTORMS IN THESE AREAS...AND ISOLATED CONVECTION ELSEWHERE OVER THE HIGH TERRAIN OF CENTRAL AND NRN MTNS THROUGH LATE AFTERNOON. OTHERWISE...DRIER AIR AND SUBSIDENCE MOVING ACROSS THE AREA WILL PUT A QUICK END TO PRECIP THIS EVENING. DEWPOINTS DROPPING INTO THE UPPER 20S AND 30S WILL PROVIDE ROOM FOR COOLER TEMPERATURES TONIGHT...NEAR TO SLIGHTLY BELOW NORMAL. SHOULD HAVE WIDESPREAD 30S IN THE MOUNTAINS ABOVE 9000 FT TONIGHT AND MONDAY NIGHT. MONDAY WILL BE DRY EVERYWHERE WITH HIGHS SLIGHTLY BELOW NORMAL. .LONG TERM...(TUESDAY THROUGH SUNDAY) ISSUED AT 224 PM MDT SUN AUG 31 2014 THE PERIOD BEGINS WITH WARM CONDITIONS UNDER MOSTLY CLEAR SKIES AS HIGH PRESSURE EXPANDS TO OUR SOUTH...AND THE STRONGER WESTERLIES STRETCH OVER THE NORTHERN TIER STATES. THE GRADIENT WILL TIGHTEN A LITTLE ON WED AS THE FLOW BEGINS TO SHIFT FROM WEST TO SOUTHWEST AS A LOW PRESSURE TROUGH DEVELOPS ALONG THE WEST COAST. THEREFORE THE AREA CAN EXPECT SOME BREEZES DURING THE AFTERNOON. THE WESTERN TROUGH WILL PUSH THE SUBTROPICAL RIDGE EASTWARD...AND WILL RESULT IN A SOUTHWEST TO SOUTH FLOW OVER THE REGION...THU THROUGH THE WEEKEND. AS A RESULT MOISTURE WILL BEGIN TO WORK ITS WAY INTO THE AREA...WITH AN INCREASED CHANCE OF SHOWERS AND THUNDERSTORMS. THERE IS STILL SOME UNCERTAINTY AS TO JUST HOW DEEP AND EXTENSIVE THIS MOISTURE SURGE WILL BE. BUT THERE IS THE POTENTIAL FOR A WET FEW DAYS...FROM LATE IN THE WORK WEEK THROUGH THE WEEKEND. AFTER ABOVE NORMAL TEMPERATURES THROUGH MIDWEEK...TEMPERATURES WILL DROP TO BELOW NORMAL VALUES BY THE WEEKEND DUE TO INCREASED CLOUDS AND PRECIPITATION. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z MONDAY NIGHT) ISSUED AT 1059 PM MDT SUN AUG 31 2014 VFR CONDITIONS WILL EXPECTED ACROSS THE REGION OVER THE NEXT 24 HOURS AS DRIER AIR FILTERS IN FROM THE WEST. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && SHORT TERM...BEN LONG TERM...EH AVIATION...NL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 436 AM MDT SUN AUG 31 2014 COZ001>014-017>023-UTZ022>025-027>029-011045- 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- 436 AM MDT SUN AUG 31 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS...MAINLY OVER THE MOUNTAINS NORTH OF INTERSTATE 70...ARE EXPECTED THIS MORNING...DECREASING THIS AFTERNOON. ERRATIC WINDS AND OCCASIONAL LIGHTNING WILL ACCOMPANY THESE STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY AFTER A DRY MONDAY THROUGH WEDNESDAY...THERE IS A CHANCE OF SHOWERS AND THUNDERSTORMS AGAIN THURSDAY THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. CC
The national radar mosaic for the moment the first event began.
1 drought. Local standard time, as filed.
Severe drought conditions remained mainly unchanged across far southeast Utah even though precipitation totals were above normal for September.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2014Every state in 2014This day in weather historyWarnings in Utah, September 2014
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: 550763.