A brief period of heavy rain caused a flash flood at Capitol Reef National Park.
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The episode as NWS SLC wrote it up.
A brief period of heavy rain caused a flash flood at Capitol Reef National Park.
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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Jun 1, 9:29 AM MST, 4 hours 1 minute earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1029 AM MDT MON JUN 1 2009 .SYNOPSIS...A RIDGE ACROSS THE REGION WILL GRADUALLY SHIFT EAST BY MIDWEEK AND A SOUTHWESTERLY FLOW WILL DEVELOP. DRIER AIR WILL SLOWLY SPREAD INTO THE REGION ON THIS FLOW. && .DISCUSSION...THE UPPER LOW THAT MOVED THROUGH SOUTHERN UTAH YESTERDAY AND OVERNIGHT IS JUST EAST OF THE FOUR CORNERS THIS MORNING...LEAVING MUCH OF THE FORECAST AREA UNDER WEAK HIGH PRESSURE AND LIGHT FLOW ALOFT. MOISTURE CONTINUES TO LINGER ACROSS THE AREA...AND ANOTHER ROUND OF AFTERNOON SHOWERS AND THUNDERSTORMS IS EXPECTED TODAY. ONLY CURRENT ACTIVITY OF NOTE IS A SMALL LINE OF THUNDERSTORMS MOVING THROUGH SOUTHERN NEVADA AS OF 1545Z...AND THE BULK OF THE ACTIVITY SHOULD HOLD OFF UNTIL AFTER 18Z. WITH RELATIVELY LITTLE SHEAR ACROSS THE AREA...ORGANIZED CONVECTION IS NOT CONSIDERED A MAJOR THREAT TODAY...THOUGH ISOLATED CASES OF SEVERE HAIL AND WIND GUSTS ARE NOT OUT OF THE QUESTION. MAIN CONCERN FOR TODAY IS THE POSSIBILITY OF FLASH FLOODING...AS STORM MOTION WILL BE VERY SLOW. HOWEVER...DESPITE THE FACT THAT NORTHERN UTAH HAS PW VALUES NEAR 0.8 INCHES...THE MORE FLASH FLOOD PRONE AREAS IN THE SOUTHERN HALF OF THE CWA ONLY HAVE PW VALUES OF 0.6 INCHES AS INDICATED BY SATELLITE AND MODEL DATA. AS SUCH...HAVE DECIDED TO KEEP THE FLASH FLOOD POTENTIAL AT LOW ACROSS THE AREA AS ISSUED BY THE OVERNIGHT SHIFT. THE CURRENT FORECAST LOOKS TO BE ON TRACK AND NO UPDATES ARE ANTICIPATED THIS MORNING. && .AVIATION...VFR CONDITIONS WITH CEILINGS ABOVE 7000 FT WILL PREVAIL AT THE SLC TERMINAL THROUGHOUT THE DAY. SOUTHEASTERLY WINDS ARE EXPECTED TO SHIFT TO THE NORTHWEST BETWEEN 19Z AND 21Z. THERE IS A 60 PERCENT CHANCE THAT OUTFLOW FROM THUNDERSTORMS DEVELOPING OVER THE HIGHER TERRAIN LATER TODAY WILL BRING A PERIOD OF ERRATIC WINDS TO THE TERMINAL...AND THERE IS A 20 PERCENT CHANCE THAT A THUNDERSTORMS WILL DIRECTLY IMPACT THE TERMINAL. THE MOST LIKELY TIME THAT THIS WOULD OCCUR IS BETWEEN 22Z AND 02Z. && .FIRE WEATHER...HIGH PRESSURE OVERHEAD IS BEGINNING TO WEAKEN....AND IS EXPECTED TO MOVE EAST OVERNIGHT. MOISTURE IS STILL IN PLACE UNDER THE RIDGE...AND AFTERNOON CONVECTION IS EXPECTED TO DEVELOP YET AGAIN TODAY. SHOWERS AND THUNDERSTORMS WILL INITIALLY DEVELOP OVER THE HIGHER TERRAIN...AND MOVE OVER ADJACENT AREAS. STORMS WILL MOVE SLOWLY DUE TO LIGHT WINDS...INCREASING THE CHANCE OF WETTING RAIN OVER THOSE AREAS THAT SEE CONVECTIVE DEVELOPMENT. CONVECTIVE DEVELOPMENT IS EXPECTED STATEWIDE. HOWEVER...STORM WILL DEVELOP EARLIER AND COVERAGE SHOULD BE MORE WIDESPREAD IN THE NORTHERN PART OF THE STATE WHERE BETTER MOISTURE IS IN PLACE. A LOW PRESSURE SYSTEM IS BEGINNING TO MOVE ONTO THE CALIFORNIA COAST. THIS WILL AFFECT US BEGINNING TUESDAY AFTERNOON AS A DRY SOUTHWEST FLOW DEVELOPS. THIS SOUTHWESTERLY FLOW WILL BRING STRONG WINDS AND A RAPID DRYING TREND THAT APPEARS TO REMAIN IN PLACE THROUGH AT LEAST THURSDAY. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...NONE. WY...NONE. && PUBLIC...SCHOENING FIRE WEATHER...HOSENFELD AVIATION...HOSENFELD FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1046 AM MDT MON JUN 1 2009 UTZ001>016-019>021-517-518-WYZ021-021200- CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT- SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT- GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS- WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80- WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS- WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL- SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH- UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH- GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS- SOUTHERN MOUNTAINS-SOUTHWEST WYOMING- 1046 AM MDT MON JUN 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS THE OUTLOOK AREA ONCE AGAIN TODAY...WITH THE GREATEST COVERAGE DURING THE AFTERNOON AND EVENING HOURS. A FEW OF THESE STORMS WILL PRODUCE LOCALLY HEAVY RAIN...BRINGING A THREAT OF ISOLATED FLASH FLOODING TO SLOT CANYONS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A DRYING TREND WILL BEGIN FROM THE SOUTHWEST ON TUESDAY WHILE THE NORTH AND EAST REMAINS MOIST. THIS DRYING WILL SPREAD ACROSS MORE OF THE OUTLOOK AREA WEDNESDAY THROUGH THURSDAY. GUSTY SOUTHWEST WINDS WILL ACCOMPANY THIS DRIER AIR. ISOLATED HIGH BASED THUNDERSTORMS COULD STILL OCCUR THROUGH THE END OF THE WEEK AND INTO THE WEEKEND...WITH GUSTY WINDS POSSIBLE. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
The Cedar City radar (KICX), 160 km away, was scanning. The volume nearest the first event began at 20:29 UTC.
1 flash flood. Local standard time, as filed.
A visitor to Capitol Reef National Park reported a flash flood in the Cathedral Valley area of the park after a brief period of heavy rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2009Every state in 2009This day in weather historyWarnings in Utah, June 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: 179372.