Alert archive / Utah / Flash Flood Warnings in 2010
Flash Flood Warning 2, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood warning at Jul 21, 2010, 2:02 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
- Jul 21, 2010, 2:02 PM MDT (20:02 UTC)
- Expired
- Jul 21, 2010, 5:00 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 radar
The Grand Junction radar (KGJX), 212 km from the middle of the area, began a volume at 20:02 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.
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 21, 3:19 AM MDT, 10 hours 43 minutes earlier.
Area forecast discussion, Jul 21, 3:19 AM MDT, 10 hours 43 minutes before
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</html>Hazardous weather outlook, Jul 21, 6:00 AM MDT, 8 hours 2 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 600 AM MDT WED JUL 21 2010 COZ001>014-017>023-UTZ022>025-027>029-221138- ANIMAS RIVER BASIN-ARCHES/GRAND FLAT-CANYONLANDS/NATURAL BRIDGES- CENTRAL COLORADO RIVER BASIN- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- CENTRAL YAMPA RIVER BASIN-DEBEQUE TO SILT CORRIDOR- EASTERN UINTA BASIN-EASTERN UINTA MOUNTAINS- ELKHEAD AND PARK MOUNTAINS-FLAT TOPS- FOUR CORNERS/UPPER DOLORES RIVER- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAINS-GRAND AND BATTLEMENT MESAS- GRAND VALLEY-LA SAL AND ABAJO MOUNTAINS-LOWER YAMPA RIVER BASIN- NORTHWEST SAN JUAN MOUNTAINS-PARADOX VALLEY/LOWER DOLORES RIVER- ROAN AND TAVAPUTS PLATEAUS-SAN JUAN RIVER BASIN-SOUTHEAST UTAH- SOUTHWEST SAN JUAN MOUNTAINS-TAVAPUTS PLATEAU- UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-UPPER GUNNISON RIVER VALLEY- UPPER YAMPA RIVER BASIN-WEST ELK AND SAWATCH MOUNTAINS- 600 AM MDT WED JUL 21 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS AND SHOWERS ARE EXPECTED AGAIN TODAY AS DISTURBANCES CONTINUE TO MOVE OVER UTAH AND COLORADO. MAIN CONCERN WILL BE GUSTY WINDS AT THE SURFACE. ALL AREAS IN UTAH AND COLORADO HAVE A CHANCE TO SEE SOME PRECIPITATION TODAY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY MOISTURE WILL INCREASE OVER THE AREA WITH A SLIGHT CHANCE OF THUNDERSTORMS OVER LOWER ELEVATIONS AND A CHANCE OF THUNDERSTORMS OVER THE MOUNTAINS THURSDAY THROUGH THE WEEKEND THOUGH AREAS SOUTH OF INTERSTATE 70 WILL BE FAVORED. .SPOTTER INFORMATION STATEMENT SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.
In the hours before
Special weather statement, Jul 21, 1:30 PM MDT, 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 130 PM MDT WED JUL 21 2010 UTZ023-024-212015- EASTERN UINTA BASIN UT-EASTERN UINTA MOUNTAINS UT- 130 PM MDT WED JUL 21 2010 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN UINTAH COUNTY UNTIL 215 PM MDT... AT 125 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10 MILES SOUTHWEST OF WHITEROCKS...MOVING EAST AT 30 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... WHITEROCKS... MAESER... VERNAL... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. WHEN THUNDER ROARS...GO INDOORS. HEAVY RAINFALL...WHICH MAY RESULT IN MINOR FLOODING...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. PRINGLE
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 9:29 AM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Gunnison, Hinsdale, La Plata and 6 more | 12 hr |
| Jul 21, 2:58 PM MDT | Severe Thunderstorm Warning | GJT | Moffat | 47 min |
| Jul 21, 5:08 PM MDT | Flash Flood Warning | GJT | Dolores, Montrose, San Juan, San Miguel | 3 hr |
| Jul 21, 2:12 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 48 min |
| Jul 21, 2:47 PM MDT | Severe Thunderstorm Warning | GJT | San Juan | 43 min |
| Jul 21, 3:32 PM MDT | Severe Thunderstorm Warning | GJT | San Juan | 26 min |
Nearby
Flash Flood Warnings in Utah, 2010Every flash flood warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.