Alert archive / Utah / Flash Flood Warnings in 2013
Flash Flood Warning 40, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Sep 13, 2013, 3:25 PM MDT for San Juan 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
- Sep 13, 2013, 3:25 PM MDT (21:25 UTC)
- Expired
- Sep 13, 2013, 6:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Grand Junction, CO
- Area
- Storm-based polygon
- Flood severity
- None
County San Juan County, UT
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 9.4 hours before the alert went out and 202 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
- 3 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 1229 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 94 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 Sep 13, 11:34 AM MDT, 3 hours 51 minutes earlier.
Area forecast discussion, Sep 13, 11:34 AM MDT, 3 hours 51 minutes before
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</html>Hazardous weather outlook, Sep 13, 6:46 AM MDT, 8 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO ISSUED BY NATIONAL WEATHER SERVICE SALT LAKE CITY UT 646 AM MDT FRI SEP 13 2013 COZ001>014-017>023-UTZ022>025-027>029-141300- 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- 646 AM MDT FRI SEP 13 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED TO NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS WILL REDEVELOP THIS AFTERNOON AND EVENING...FAVORING HIGHER TERRAIN. SOME STORMS WILL PRODUCE BRIEF HEAVY RAIN AND A THREAT OF ISOLATED FLASH FLOODING...BUT THIS WILL BE MORE LOCALIZED THAT IN RECENT DAYS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY EXPECT A SLOW DECREASE IN AREAL COVERAGE OF SHOWERS AND THUNDERSTORMS THROUGH THE WEEKEND. GENERALLY...SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED WITH PRECIPITATION FAVORING HIGHER TERRAIN. THE THREAT OF BRIEF HEAVY RAIN WILL CONTINUE WITH STORMS BUT THIS WILL BECOME MORE ISOLATED. MONDAY THROUGH WEDNESDAY...MUCH DRIER AIR WILL MOVE INTO THE AREA WITH ONLY A SLIGHT CHANCE OF AFTERNOON AND EARLY EVENING SHOWERS AND THUNDERSTORMS...MAINLY OVER THE MOUNTAINS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 7:34 PM MDT | Flash Flood Warning | GJT | San Miguel | 3 hr |
| Sep 12, 11:55 PM MDT | Areal Flood Advisory | GJT | Garfield | 3 hr |
| Sep 13, 12:49 AM MDT | Areal Flood Advisory | GJT | San Miguel | 3 hr |
| Sep 13, 4:19 PM MDT | Special Weather Statement | GJT | Grand | 26 min |
| Sep 13, 4:52 PM MDT | Special Weather Statement | GJT | Grand | 38 min |
| Sep 13, 5:24 PM MDT | Flash Flood Warning | GJT | Grand | 3 hr |
Nearby
Flash Flood Warnings in Utah, 2013Every flash flood warning in 2013
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.