Alert archive / Utah / Flash Flood Warnings in 2005
Flash Flood Warning 21, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Sep 3, 2005, 1:45 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 3, 2005, 1:45 PM MDT (19:45 UTC)
- Expired
- Sep 3, 2005, 4:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Grand Junction, CO
- Area
- Whole counties
County San Juan County, UT
The radar
The Grand Junction radar (KGJX), 212 km from the middle of the area, began a volume at 19:47 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, 7.8 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
- 5 J/kg
- Mixed-layer CIN
- -326 J/kg
- Mixed-layer LCL
- 2496 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KGJT 031948 FFWGJT UTC037-032245- /O.NEW.KGJT..W.0001.050903T1945Z-050903T2245Z/ BULLETIN - NATIONAL WEATHER SERVICE GRAND JUNCTION CO 145 PM MDT SAT SEP 3 2005 THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A * FOR... NORTH CENTRAL SAN JUAN COUNTY IN SOUTHEAST UTAH * UNTIL 445 PM MDT. * AT 143 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATED THAT OVER AN INCH OF RAIN HAS FALLEN IN AREAS OF CANYONLANDS NATIONAL PARK WEST IN THE NORTHWEST CORNER OF SAN JUAN COUNTY * SLOW MOVING THUNDERSTORMS ARE PRODUCING HEAVY RAINFALL IN THE WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR IN SOME LOCATIONS...ESPECIALLY IN STEEP RAVINES AND GORGES. FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS. $$ BA
2 follow-up statements
000 WGUS75 KGJT 032021 FFSGJT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 219 PM MDT SAT SEP 3 2005 UTC037-032245- SAN JUAN UT- 219 PM MDT SAT SEP 3 2005 ...FLASH FLOOD WARNING CONTINUES FOR SAN JUAN COUNTY UNTIL 4:45 PM MDT... AT 217 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATED THAT OVER AN INCH OF RAIN HAS FALLEN THIS AFTERNOON ACROSS PORTIONS OF CANYONLANDS NATIONAL PARK. SLOW MOVING THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL IN THE WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR...ESPECIALLY IN STEEP CANYONS AND RAVINES. THE HEAVIEST RAIN SO FAR HAS FALLEN ACROSS THE WESTERN PORTIONS OF CANYONLANDS...NEAR THE COLORADO RIVER. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS... OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS. $$ BA
000 WGUS75 KGJT 032246 FFSGJT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 445 PM MDT SAT SEP 3 2005 UTC037-032315- SAN JUAN UT- 445 PM MDT SAT SEP 3 2005 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SAN JUAN COUNTY HAS BEEN ALLOWED TO EXPIRE... THE POTENTIAL FOR EXCESSIVE RUNOFF FROM HEAVY RAINFALL HAS SIGNIFICANTLY DECREASED. IF FLOODING WAS OBSERVED EARLIER IN THE AFTERNOON...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY AND ASK THEM TO CONTACT THE NATIONAL WEATHER SERVICE OFFICE IN GRAND JUNCTION. $$
Nearby
Flash Flood Warnings in Utah, 2005Every flash flood warning in 2005
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.