Alert archive / Utah / Flash Flood Warnings in 2014
Flash Flood Warning 11, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Jul 29, 2014, 4:40 PM MDT for Grand County, Utah. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 29, 2014, 4:40 PM MDT (22:40 UTC)
- Expired
- Jul 29, 2014, 7:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Grand Junction, CO
- Area
- Storm-based polygon
- Flood severity
- None
County Grand County, UT
The radar
The Grand Junction radar (KGJX), 118 km from the middle of the area, began a volume at 22:41 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 10.7 hours before the alert went out and 94 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Jul 29, 2:26 PM MDT, 2 hours 14 minutes earlier.
Area forecast discussion, Jul 29, 2:26 PM MDT, 2 hours 14 minutes before
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</html>Hazardous weather outlook, Jul 29, 5:57 AM MDT, 10 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 557 AM MDT TUE JUL 29 2014 COZ001>014-017>023-UTZ022>025-027>029-301200- 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- 557 AM MDT TUE JUL 29 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS OVER WEST-CENTRAL COLORADO WILL INCREASE IN COVERAGE AND INTENSITY FROM LATE MORNING THROUGH THE AFTERNOON. AS TEMPERATURES WARM THUNDERSTORMS WILL DEVELOP AND MOST WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN IN A SHORT PERIOD OF TIME. DANGEROUS LIGHTNING AND OUTFLOW WINDS FROM 30 TO 40 MPH WILL ACCOMPANY THESE STORMS. LOCALIZED MUD...DEBRIS FLOWS...OR FALLING ROCKS WILL BE POSSIBLE IN THOSE AREAS PRONE TO SUCH OCCURRENCES ...LIKE STEEP TERRAIN. SHOWERS AND THUNDERSTORMS WILL PERSIST OVERNIGHT...MAINLY ACROSS THE NORTH. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WEDNESDAY-SATURDAY...SHOWERS AND THUNDERSTORMS WILL REMAIN QUITE ACTIVE THROUGH WEDNESDAY AFTERNOON...WITH LOCALLY HEAVY RAIN POSSIBLE. A SLOW DRYING TREND WILL BEGIN WEDNESDAY NIGHT. THEREFORE...AFTER A LULL WEDNESDAY NIGHT AND EARLY THURSDAY THE SHOWERS AND THUNDERSTORMS THAT DEVELOP EACH AFTERNOON AND EVENING WILL STAY MAINLY OVER HIGHER TERRAIN. SUNDAY-MONDAY...THERE IS THE POTENTIAL FOR ANOTHER MONSOONAL SURGE LATE THIS WEEKEND AND EARLY NEXT WEEK. AS A RESULT...SHOWERS AND THUNDERSTORMS WILL BECOME MORE WIDESPREAD WITH CELLS PRODUCING HEAVY RAIN MORE PREVALENT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT...HOWEVER SPOTTERS ARE ENCOURAGED TO RELAY RAINFALL AMOUNTS OR ANY OBSERVED FLOODING TO THE GRAND JUNCTION FORECAST OFFICE. EH/NL
In the hours before
Local storm report, Jul 29, 1:21 PM MDT, 3 hours 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
121 PM MDT TUE JUL 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN 2 ESE REDLANDS 39.08N 108.62W
07/29/2014 M1.01 INCH MESA CO COCORAHS
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1401326
MALEKSALocal storm report, Jul 29, 1:22 PM MDT, 3 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
122 PM MDT TUE JUL 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN 5 WSW DURANGO 37.25N 107.95W
07/29/2014 M0.98 INCH LA PLATA CO COCORAHS
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1401327
MALEKSALocal storm report, Jul 29, 1:23 PM MDT, 3 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
123 PM MDT TUE JUL 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 AM HEAVY RAIN 6 W ASPEN 39.19N 106.94W
07/29/2014 M0.96 INCH PITKIN CO COCORAHS
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1401328
MALEKSALocal storm report, Jul 29, 2:07 PM MDT, 2 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
207 PM MDT TUE JUL 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0205 PM HAIL 1 SW MONTICELLO 37.86N 109.35W
07/29/2014 E0.50 INCH SAN JUAN UT TRAINED SPOTTER
0.25 TO 0.5 INCH DIAMETER HAIL AND HEAVY RAIN.
&&
EVENT NUMBER GJT1401329
MALEKSALocal storm report, Jul 29, 3:43 PM MDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
343 PM MDT TUE JUL 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM HAIL 9 NE CANYONLANDS NP 38.48N 109.74W
07/29/2014 E0.50 INCH SAN JUAN UT PARK/FOREST SRVC
PEA TO DIME SIZE HAIL AND VERY HEAVY RAIN AT DEAD HORSE
POINT STATE PARK
&&
EVENT NUMBER GJT1401330
MALEKSASpecial weather statement, Jul 29, 4:32 PM MDT, 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 432 PM MDT TUE JUL 29 2014 COZ001-UTZ024-025-292315- LOWER YAMPA RIVER BASIN CO-TAVAPUTS PLATEAU UT- EASTERN UINTA BASIN UT- 432 PM MDT TUE JUL 29 2014 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL RIO BLANCO AND EAST CENTRAL UINTAH COUNTIES UNTIL 515 PM MDT... AT 432 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 26 MILES SOUTHWEST OF DINOSAUR...OR 31 MILES SOUTHEAST OF FORT DUCHESNE...MOVING EAST AT 20 MPH. HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF WEST CENTRAL RIO BLANCO AND EAST CENTRAL UINTAH COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3987 10952 4008 10952 4018 10902 3992 10896 TIME...MOT...LOC 2232Z 260DEG 18KT 4000 10940 TGR
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 8:55 PM MDT | Areal Flood Advisory | GJT | Ouray, San Miguel | 3 hr |
| Jul 28, 9:02 PM MDT | Areal Flood Advisory | GJT | Montrose | 3 hr |
| Jul 29, 2:34 AM MDT | Areal Flood Advisory | GJT | Mesa | 3 hr |
| Jul 29, 12:49 PM MDT | Areal Flood Advisory | GJT | Montrose | 3 hr |
| Jul 29, 1:12 PM MDT | Special Weather Statement | GJT | San Miguel | 48 min |
| Jul 29, 1:23 PM MDT | Flash Flood Warning | GJT | Montrose | 3 hr |
| Jul 29, 2:38 PM MDT | Areal Flood Advisory | GJT | San Miguel | 4 hr |
| Jul 29, 5:31 PM MDT | Areal Flood Advisory | GJT | Mesa | 3 hr |
| Jul 29, 5:38 PM MDT | Special Weather Statement | GJT | Moffat | 52 min |
| Jul 29, 5:53 PM MDT | Flash Flood Warning | GJT | Mesa | 3 hr |
| Jul 29, 1:39 PM MDT | Flash Flood Warning | GJT | San Juan | 3 hr |
| Jul 29, 3:15 PM MDT | Areal Flood Advisory | GJT | San Juan | 4 hr |
| Jul 29, 3:44 PM MDT | Areal Flood Advisory | GJT | Grand, San Juan | 3 hr |
| Jul 29, 4:07 PM MDT | Areal Flood Advisory | GJT | Uintah | 3 hr |
| Jul 29, 4:32 PM MDT | Special Weather Statement | GJT | Uintah | 43 min |
| Jul 29, 5:09 PM MDT | Areal Flood Advisory | GJT | Grand | 3 hr |
Nearby
Flash Flood Warnings in Utah, 2014Every flash flood warning in 2014
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.